CN113996776B - Device and method for non-solid die forging grinding ball - Google Patents
Device and method for non-solid die forging grinding ball Download PDFInfo
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- CN113996776B CN113996776B CN202111526355.0A CN202111526355A CN113996776B CN 113996776 B CN113996776 B CN 113996776B CN 202111526355 A CN202111526355 A CN 202111526355A CN 113996776 B CN113996776 B CN 113996776B
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- 238000000227 grinding Methods 0.000 title claims abstract description 75
- 239000007787 solid Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005242 forging Methods 0.000 title claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 229910001018 Cast iron Inorganic materials 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010909 process residue Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910001037 White iron Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a device and a method for non-solid die forging grinding balls, comprising the following steps: the rack comprises a main body and a movable cross beam, and the movable cross beam is movably arranged on the main body; the oil cylinder assembly comprises a main cylinder and a lower cylinder which are sequentially arranged on the main body from top to bottom, the main cylinder is connected with the top end of the movable cross beam, and the bottom end of the movable cross beam is provided with an extrusion cylinder; the die assembly comprises an upper half die and a lower half die arranged at the bottom of the upper half die, a charging barrel is arranged at the center of the upper half die, a lower pressing head is arranged in the charging barrel, a lower cylinder penetrates through the center of the lower half die and is connected with the lower pressing head, an upper pressing head is connected with the extrusion cylinder, the upper half die is provided with a plurality of upper hemispherical pits circumferentially distributed around the center of the upper half die, and the lower half die is provided with a plurality of lower hemispherical pits circumferentially distributed around the center of the lower half die. The grinding ball prepared by the invention has compact internal structure, no shrinkage cavity and shrinkage porosity, high hardness and high toughness, low abrasion and breaking rate and strong wear resistance.
Description
Technical Field
The invention relates to the technical field of preparing zero-defect grinding balls by using a non-solid die forging technology, in particular to a device and a method for non-solid die forging grinding balls.
Background
The grinding ball is an indispensable grinding body in the ball mill and the semi-autogenous mill, the crushing and grinding of the materials are realized by mechanical impact and friction between the grinding ball and the materials, and the working condition is extremely severe, so that the high hardness and the high impact fatigue failure resistance are required. In the prior art, a charging barrel of a horizontal liquid forging machine is positioned below a die, a hammer head ejects a metal melt in the charging barrel upwards and enters a die cavity, so that gas and slag are very easy to roll, the zero defect grinding ball cannot be produced, the preparation method of the grinding ball mainly comprises three main types of liquid casting, solid forging and solid rolling, the materials comprise alloy white iron, austempered ductile iron and high carbon steel, the alloy white iron grinding ball and the austempered ductile iron grinding ball have high hardness and high wear resistance, abnormal crushing occurs in use due to casting defects or coarse grains in the alloy white iron grinding ball and the austempered ductile iron grinding ball, the crushing rate is up to more than 10%, the grinding efficiency is seriously influenced, and the solid forging or rolling steel ball has low crushing rate, insufficient wear resistance, high ball consumption and serious material waste.
Disclosure of Invention
The invention aims to provide a device and a method for non-solid die forging grinding balls, which are used for solving the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: an apparatus for non-solid swaged grinding balls comprising:
The rack comprises a main body and a movable cross beam, wherein the movable cross beam is movably arranged on the main body and can slide along the vertical direction;
the oil cylinder assembly comprises a main cylinder and a lower cylinder which are sequentially arranged on the main body from top to bottom, the movable cross beam is positioned between the main cylinder and the lower cylinder, the main cylinder is connected with the top end of the movable cross beam, and the bottom end of the movable cross beam is provided with an extrusion cylinder;
The die assembly comprises an upper half die and a lower half die arranged at the bottom of the upper half die, the top surface of the upper half die is connected with the bottom end of the movable cross beam, the lower cylinder is arranged at the bottom of the lower half die, a charging barrel is arranged at the center of the upper half die, a lower pressing head is arranged in the charging barrel, the lower cylinder penetrates through the center of the lower half die and is connected with the lower pressing head, the extrusion cylinder is connected with an upper pressing head, the upper pressing head and the charging barrel are arranged up and down correspondingly, the upper pressing head can extend into along the top opening of the charging barrel, the bottom surface of the charging barrel is positioned at the center of the parting surface of the upper half die and the center of the lower half die, the top surface of the charging barrel is flush with the top surface of the upper half die, the upper half die is provided with a plurality of upper hemispherical pits circumferentially distributed around the center of the upper half die, the lower half die is provided with a plurality of lower hemispherical pits circumferentially distributed around the center of the lower half die, the upper hemispherical pits and the lower hemispherical pits are clamped to form a spherical cavity, and a runner is arranged between the spherical cavity and the side surface of the charging barrel.
Preferably, the main body comprises a top beam and a bottom beam, a plurality of stand columns are connected between the corners of the top beam and the bottom beam, and the stand columns penetrate through the corners of the movable cross beam.
Preferably, the main cylinder is mounted on the top beam, a piston rod of the main cylinder is fixedly connected with the top end of the movable cross beam, corners of the bottom end of the movable cross beam are fixedly connected with the top surface of the upper half die through a plurality of pull rods, the lower cylinder is mounted on the bottom beam, a piston rod of the lower cylinder penetrates through the lower half die and is fixed with the lower pressing head, and a piston rod of the extrusion cylinder is fixed with the upper pressing head.
Preferably, the rated thrust of the main cylinder is 5000-10000 kN, the rated thrust of the extrusion cylinder is 600-2000 kN, and the rated thrust of the lower cylinder is 50-200 kN.
Preferably, the upper half mold and the lower half mold are both made of heat-resistant cast iron, the number of the upper hemispherical pits and the number of the lower hemispherical pits are 2-12, the distance between every two adjacent upper hemispherical pits is 15-30 mm, the distance between every two adjacent lower hemispherical pits is 15-30 mm, an exhaust plug is arranged at the top of each upper hemispherical pit, a plurality of exhaust holes are formed in the periphery of each exhaust plug, and the exhaust holes are in any one of a semicircular shape, a triangular shape and a trapezoid shape.
Preferably, the cross-sectional area of the flow passage is 1/6-1/2 of the cross-sectional area of the spherical cavity.
Preferably, the charging barrel is made of die steel, heat-resistant cast iron or refractory material, the charging barrel is of a cylindrical structure with the inner diameter of 80-300 mm, and the wall thickness of the charging barrel is 15-50 mm.
Preferably, the upper pressure head is a stud-type cylindrical pressure head, the diameter of the upper pressure head is 0.15-2 mm smaller than the inner diameter of the charging barrel, and the length of the upper pressure head working section is 0.8-1.5 times of the diameter of the upper pressure head.
Preferably, the lower pressure head is a screw hole type cylindrical pressure head, the diameter of the lower pressure head is 0.10-1.5 mm smaller than the inner diameter of the charging barrel, and the length of the working section of the lower pressure head is 0.5-1.0 times of the diameter of the lower pressure head.
A method of non-solid swaged grinding balls by the steps of:
S1, closing the mold, and simultaneously closing the flow passage between the spherical cavity and the charging barrel;
s2, pouring the qualified molten metal into the charging barrel, and standing until the gas and the inclusion float up to the surface;
S3, compacting the die and keeping the pressure for time delay;
S4, pressurizing the metal melt during the rolling guarantee period, and opening the flow passage between the spherical cavity and the charging barrel to enable the metal melt to enter the spherical cavity through the flow passage and to be full;
S5, increasing the pressure on the metal melt to shrink the supplement body until the metal melt is completely solidified to form a grinding ball;
S6, opening the die and ejecting out the grinding balls, cooling the grinding balls after the die is opened, and removing the process residues for heat treatment.
The invention discloses the following technical effects:
(1) The metal melt is kept stand in the charging barrel before entering the die cavity, so that gas and inclusion can float upwards;
(2) The runner is arranged below the charging barrel, so that the metal melt entering the die cavity is ensured to be clean;
(3) The pressing head can solidify the metal melt under the action of pressure, and the feeding is sufficient, so that the grinding ball has smooth appearance, fine internal structure, high strength and toughness and good wear resistance;
(4) The lower pressure head seals the flow passage, so that gravity lower filling can be prevented, and a cold barrier is formed;
(5) The grinding ball prepared by the invention has compact internal structure, no shrinkage cavity and shrinkage porosity, high hardness and high toughness, low abrasion and breaking rate and strong wear resistance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the apparatus for non-solid swaged grinding balls of the present invention;
FIG. 2 is a schematic view of the spherical cavity of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1A;
wherein 1 is a hydraulic system, 2 is a top beam, 3 is a stand column, 4 is a movable cross beam, 5 is a pull rod, 6 is an upper half mold, 7 is an exhaust plug, 8 is an upper half sphere pit, 9 is a lower half sphere pit, 10 is a lower half mold, 11 is a bottom beam, 12 is a runner, 13 is a lower cylinder, 14 is a lower pressure head, 15 is a charging barrel, 16 is an upper pressure head, 17 is an extrusion cylinder, and 18 is a master cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-3, the present embodiment provides a device for non-solid forging grinding balls, which consists of a frame, an oil cylinder assembly, a hydraulic system 1 and a die assembly.
The frame consists of a top beam 2, a movable cross beam 4, a bottom beam 11 and four upright posts 3 which connect the top beam 2, the movable cross beam 4 and the bottom beam 11 together; a pull rod 5 with the length of 200-600mm is arranged on the lower plane of the movable cross beam 4;
The oil cylinder assembly comprises a main cylinder 18, an extrusion cylinder 17 and a lower cylinder 13; the main cylinder 18 is arranged on the top beam 2, a piston rod of the main cylinder is connected with the movable cross beam 4 to drive the movable cross beam 4 to move up and down, so that the opening and closing, locking and pressure maintaining of the die are realized, and the rated thrust is 5000-10000 kN; the extrusion cylinder 17 is arranged in the movable cross beam 4, a piston rod of the extrusion cylinder passes through the movable cross beam 4, an upper pressure head 16 is arranged at the end of the piston rod of the extrusion cylinder, and the extrusion cylinder can independently move up and down while moving along with the movable cross beam 4 to drive the upper pressure head 16 to extrude and feed a metal solution, the speed of the extrusion cylinder can be set to be adjustable, cooling water is filled in the piston rod, and the rated thrust is 600-2000 kN; the lower cylinder 13 is arranged on the bottom beam 11, a piston rod of the lower cylinder is provided with a lower pressure head 14 which can independently move up and down, the piston rod of the lower cylinder passes through the bottom beam 11 to drive the lower pressure head 14 to vertically move up and down, and when the extrusion cylinder 17 is pressurized, the lower cylinder can passively or actively retract for a set distance, and the rated thrust is 50-200 kN.
The hydraulic system 1 comprises hydraulic components such as an oil tank, an oil pump, a motor, a valve group and the like, is positioned above the top beam 2, can realize continuous adjustment of the pressure of each oil cylinder and the displacement of a piston rod, and can combine an electric system to process the pressure, the displacement and various alarm signals through various sensors and a PLC programmable control system to complete the control of the whole machine; the control system comprises a control cabinet, an operation table, a touch screen and the like, and is positioned on the ground.
The mold assembly includes an upper mold half 6, a lower mold half 10, a barrel 15, an upper ram 16, and a lower ram 14.
The upper half mould 6 is made of heat-resistant cast iron, 2-12 upper hemispherical pits 8 are formed on the upper half mould, the upper hemispherical pits 8 are uniformly arranged for 1-3 circles around a charging barrel 15, the clear distance between adjacent upper hemispherical pits 8 is 15-30 mm, the top of each upper hemispherical pit 8 is provided with a push rod or a vent plug 7 with the diameter of 1/15-1/8 of the upper hemispherical pit 8, and the periphery of the push rod or the vent plug 7 is provided with 10-30 semicircular vent holes with the radius of 0.2-0.5 mm or triangular vent holes with the depth of 0.2-0.5 mm or rectangular vent holes with the depth of 0.2-0.5 mm or trapezoidal vent holes with the depth of 0.2-0.5 mm;
The lower half mould 10 is made of heat-resistant cast iron, 2-12 lower hemispherical pits 9 which are equal to the upper half mould 6 in number and corresponding in position are formed, and when the upper half mould 6 and the lower half mould 10 are closed, the upper hemispherical pits 8 and the lower hemispherical pits 9 are combined to form a complete spherical cavity; a flow passage 12 is arranged between the spherical cavity and the side surface of the charging barrel 15, and the sectional area of the flow passage 12 is 1/6-1/2 of the sectional area of the spherical cavity;
The charging barrel 15 is made of die steel, heat-resistant cast iron or refractory material, is cylindrical with the inner diameter of 80-300 mm and the wall thickness of 15-50 mm; the bottom surface of the mold is positioned in the center of the parting surfaces of the upper mold half 6 and the lower mold half 10 and is perpendicular to the parting surfaces; the upper end surface of the upper semi-spherical pit is level with the upper plane of the upper semi-spherical pit 6, the side surface of the lower end of the upper semi-spherical pit is provided with runner ports which are equal to the upper semi-spherical pit 8 in number and are positioned on the same radial line, the runner ports are communicated with the runner 12, and the runner ports are semicircular or trapezoidal in shape;
The upper pressure head 16 is a stud type cylindrical pressure head and is made of ductile iron or H13 steel, the diameter of the upper pressure head is 0.15-2 mm smaller than the inner diameter of the charging barrel 15, and the length of the working section is 0.8-1.5 times of the diameter of the working section; the lower pressure head 14 is a screw hole type cylindrical pressure head, is made of ductile iron or H13 steel, has a diameter which is 0.10-1.5 mm smaller than the inner diameter of the charging barrel 15, and has a working section length which is 0.5-1.0 times the diameter.
A method for non-solid forging grinding ball includes such steps as non-solid forging the molten grinding ball which is poured in the cavity of mould, which is the solid-liquid mixture whose temp is higher than solidus temp of grinding ball, and the material of said molten grinding ball is alloy white iron or austempered ductile iron; the size of solid particles in the solid-liquid mixture is 10 mu m-2 mm, and the volume fraction is 0-70%;
The mold cavity is made of cast iron or cast steel and comprises a charging barrel 15, a grinding ball cavity and a ingate cavity; the number of the charging barrels 15 is 1, and the charging barrels are positioned in the center of the die; 4-10 grinding ball cavities are uniformly distributed around the circumference of the charging barrel 15, and the clear distance between adjacent grinding ball cavities is 15-25 mm; the quantity of the ingate cavities is the same as that of the grinding ball cavities, the charging barrel 15 is communicated with the grinding ball cavities, and the cross section area of the charging barrel is 1/5-1/2 of the cross section area of the largest diameter surface of the grinding ball;
the non-solid forging is to apply 5-150 MPa pressure to the non-solid grinding ball metal melt to make it rheologically fill, solidify and densify, which includes the following inseparable steps:
s1: pushing the lower pressure head 14 into the charging barrel 15, and closing an inlet of a ingate cavity at the lower end of the charging barrel 15; the lower pressure head 14 is cylindrical, and the length is +20-50 mm of the inlet height of the ingate cavity; the inlet of the ingate cavity is circular or double-trapezoid;
S2: casting the qualified grinding ball metal melt into a charging barrel 15; the inner diameter of the upper opening of the charging barrel 15 is 0.5-5 mm smaller than the inner diameter of the barrel body, the lower end is positioned on the parting plane, and the side surface of the lower end is provided with an ingate cavity;
s3: pressurizing the grinding ball metal melt in the charging barrel 15 by using the upper pressure head 16, backing the lower pressure head 14 at the bottom of the charging barrel 15, opening the ingate cavity on the side wall of the charging barrel 15, and enabling the grinding ball metal melt to enter the grinding ball cavity through the ingate cavity so as to fill the grinding ball cavity; the top surface of the grinding ball cavity of the upper half part is provided with an exhaust plug 7 with the diameter of 10-20 mm;
S4: increasing the pressure of the upper pressure head 16, continuing to push the metal melt in the charging barrel 15 to flow into the grinding ball cavity, and supplementing the body shrinkage of the grinding ball in the solidification process until the metal melt of the grinding ball is completely solidified;
s5: the upper pressure head 16 is pulled out, the die is opened, grinding balls and process residues are ejected out, and the process residues comprise residues in the ingate cavity and the charging barrel 15;
S6: cooling the grinding balls and the process residues after the mold stripping to 30-80 ℃ in air, removing the process residues, putting the grinding balls into a tempering furnace for tempering treatment at 120-180 ℃ and keeping the temperature for 6-12 h;
S7: and (5) taking the grinding ball out of a tempering furnace, and air-cooling to room temperature to obtain the zero-defect grinding ball of the embodiment.
If the device for non-solid forging the grinding balls in the embodiment is combined with the method and the PLC program control, the implementation process is realized through the following sequential actions:
S1: the movable cross beam 4 descends to enable the upper half mould 6 and the lower half mould 10 to be closed; simultaneously, the lower cylinder 13 pushes the lower pressure head 14 into the charging barrel 15 to seal the flow passage 12 at the bottom of the charging barrel 15;
s2: pouring the molten qualified grinding ball metal melt into a charging barrel 15, standing for 1-5 seconds, and floating the gas and the inclusion therein to the surface;
S3: the movable cross beam 4 descends again, and the upper half die 6 and the lower half die 10 are pressed and kept pressure for time delay;
S4: during the pressure maintaining and time delay period of the movable cross beam 4, the upper pressure head 16 is driven by the extrusion cylinder 17 to pressurize the metal melt in the charging barrel 15, the lower pressure head 14 at the bottom of the charging barrel 15 is driven by the lower cylinder 13 to retract, the runner 12 on the side wall of the charging barrel 15 is opened, and the grinding ball metal melt enters the spherical cavity through the runner 12 and is filled;
s5: increasing the pressure of the extrusion cylinder 17, and continuously pushing the metal melt in the charging barrel 15 to flow into the spherical cavity through the upper pressure head 16, and contracting the supplement body until the metal of the grinding ball is completely solidified;
S6: the main cylinder 18 releases pressure and returns, the pull rod 5 pulls the upper half mould 6, the mould is opened, the grinding ball is ejected, the grinding ball after the mould is ejected is cooled to 30-80 ℃, the process remainder is removed, and the zero defect grinding ball is obtained by carrying out necessary heat treatment.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. A method of non-solid swaged grinding balls comprising:
S1: the movable cross beam 4 descends to enable the upper half mould 6 and the lower half mould 10 to be closed; simultaneously, the lower cylinder 13 pushes the lower pressure head 14 into the charging barrel 15 to seal the flow passage 12 at the bottom of the charging barrel 15;
s2: pouring the molten qualified grinding ball metal melt into a charging barrel 15, standing for 1-5 seconds, and floating the gas and the inclusion therein to the surface;
S3: the movable cross beam 4 descends again, and the upper half die 6 and the lower half die 10 are pressed and kept pressure for time delay;
S4: during the pressure maintaining and time delay period of the movable cross beam 4, the upper pressure head 16 is driven by the extrusion cylinder 17 to pressurize the metal melt in the charging barrel 15, the lower pressure head 14 at the bottom of the charging barrel 15 is driven by the lower cylinder 13 to retract, the runner 12 on the side wall of the charging barrel 15 is opened, and the grinding ball metal melt enters the spherical cavity through the runner 12 and is filled;
s5: increasing the pressure of the extrusion cylinder 17, and continuously pushing the metal melt in the charging barrel 15 to flow into the spherical cavity through the upper pressure head 16, and contracting the supplement body until the metal of the grinding ball is completely solidified;
s6: the main cylinder 18 releases pressure and returns, the pull rod 5 pulls the upper half mould 6, the mould is opened, the grinding ball is ejected, the grinding ball after the mould is ejected is cooled to 30-80 ℃, the process residue is removed, and the necessary heat treatment is carried out, so as to obtain the zero defect grinding ball;
The device applied to the non-solid die forging grinding ball method comprises a frame, wherein the frame comprises a main body and a movable cross beam (4), the movable cross beam (4) is movably arranged on the main body, and the movable cross beam (4) can slide along the vertical direction;
The oil cylinder assembly comprises a main cylinder (18) and a lower cylinder (13) which are sequentially arranged on the main body from top to bottom, the movable cross beam (4) is positioned between the main cylinder (18) and the lower cylinder (13), the main cylinder (18) is connected with the top end of the movable cross beam (4), and the bottom end of the movable cross beam (4) is provided with an extrusion cylinder (17);
The mould assembly comprises an upper half mould (6) and a lower half mould (10) arranged at the bottom of the upper half mould (6), the top surface of the upper half mould (6) is connected with the bottom end of the movable cross beam (4), the lower cylinder (13) is positioned at the bottom of the lower half mould (10), a feed cylinder (15) is arranged at the center of the upper half mould (6), a lower pressure head (14) is arranged in the feed cylinder (15), the lower cylinder (13) penetrates through the center of the lower half mould (10) and is connected with the lower pressure head (14), an upper pressure head (16) is connected with the feed cylinder (15) in a vertically corresponding mode, the upper pressure head (16) can extend into the top opening of the feed cylinder (15), the bottom surface of the feed cylinder (15) is positioned at the center of the parting surface of the upper half mould (6) and the lower half mould (10), the top surface of the feed cylinder (15) and the upper half mould (6) penetrate through the center of the lower half mould and are connected with the lower pressure head (14), the upper half mould (17) is circumferentially distributed around the hemispherical cavity (8) of the lower half mould (10), a plurality of hemispherical pits (8) are circumferentially distributed around the hemispherical cavity (10), a flow passage (12) is arranged between the spherical cavity and the side surface of the charging barrel (15).
2. The method of non-solid swaged grinding balls according to claim 1, wherein: the main body comprises a top beam (2) and a bottom beam (11), a plurality of stand columns (3) are connected between the corners of the top beam (2) and the bottom beam (11), and the stand columns (3) penetrate through the corners of the movable cross beam (4).
3. The method of non-solid swaged grinding balls of claim 2, wherein: the master cylinder (18) is installed on the top beam (2), a piston rod of the master cylinder (18) is fixedly connected with the top end of the movable cross beam (4), corners of the bottom end of the movable cross beam (4) are fixed with the top surface of the upper half die (6) through a plurality of pull rods (5), the lower cylinder (13) is installed on the bottom beam (11), a piston rod of the lower cylinder (13) penetrates through the lower half die (10) and is fixedly connected with the lower pressing head (14), and a piston rod of the extrusion cylinder (17) is fixed with the upper pressing head (16).
4. The method of non-solid swaged grinding balls according to claim 1, wherein: the rated thrust of the main cylinder (18) is 5000-10000 kN, the rated thrust of the extrusion cylinder (17) is 600-2000 kN, and the rated thrust of the lower cylinder (13) is 50-200 kN.
5. The method of non-solid swaged grinding balls according to claim 1, wherein: the upper half mold (6) and the lower half mold (10) are made of heat-resistant cast iron, the number of the upper hemispherical pits (8) and the number of the lower hemispherical pits (9) are 2-12, the distance between every two adjacent upper hemispherical pits (8) is 15-30 mm, the distance between every two adjacent lower hemispherical pits (9) is 15-30 mm, an exhaust plug (7) is arranged at the top of each upper hemispherical pit (8), a plurality of exhaust holes are formed in the periphery of each exhaust plug (7), and the shape of each exhaust hole is any one of a semicircle, a triangle and a trapezoid.
6. The method of non-solid swaged grinding balls according to claim 1, wherein: the cross section area of the flow passage (12) is 1/6-1/2 of the cross section area of the spherical cavity.
7. The method of non-solid swaged grinding balls according to claim 1, wherein: the charging barrel (15) is made of die steel, heat-resistant cast iron or refractory materials, the charging barrel (15) is of a cylindrical structure with the inner diameter of 80-300 mm, and the wall thickness of the charging barrel (15) is 15-50 mm.
8. The method of non-solid swaged grinding balls according to claim 1, wherein: the upper pressure head (16) is a stud-type cylindrical pressure head, the diameter of the upper pressure head (16) is 0.15-2 mm smaller than the inner diameter of the charging barrel (15), and the length of the working section of the upper pressure head (16) is 0.8-1.5 times of the diameter of the upper pressure head (16).
9. The method of non-solid swaged grinding balls according to claim 1, wherein: the lower pressure head (14) is a screw hole type cylindrical pressure head, the diameter of the lower pressure head (14) is 0.10-1.5 mm smaller than the inner diameter of the charging barrel (15), and the length of the working section of the lower pressure head (14) is 0.5-1.0 times of the diameter of the lower pressure head (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111526355.0A CN113996776B (en) | 2021-12-14 | 2021-12-14 | Device and method for non-solid die forging grinding ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111526355.0A CN113996776B (en) | 2021-12-14 | 2021-12-14 | Device and method for non-solid die forging grinding ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113996776A CN113996776A (en) | 2022-02-01 |
| CN113996776B true CN113996776B (en) | 2024-05-03 |
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| CN202111526355.0A Active CN113996776B (en) | 2021-12-14 | 2021-12-14 | Device and method for non-solid die forging grinding ball |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799534A (en) * | 1986-03-03 | 1989-01-24 | Ube Industries, Ltd. | Vertical die casting machine |
| CN1073620A (en) * | 1992-12-24 | 1993-06-30 | 张瑞龙 | Multi-purpose equipment for casting and forging such as riser-free abrading-ball, bent axle, liner plate, gear |
| CN1171311A (en) * | 1997-06-06 | 1998-01-28 | 江西省进贤轻工机械有限公司 | Pressure casting technology for producing high-Cr grinding balls |
| CN110142392A (en) * | 2019-05-24 | 2019-08-20 | 陈铁石 | A kind of TUBE BY LIQUID EXTRUSION manufacturing process of steel ball |
| CN111069563A (en) * | 2020-01-09 | 2020-04-28 | 河北中泊防爆工具集团股份有限公司 | Metal casting mold and method for manufacturing aluminum bronze explosion-proof hammer |
| CN113182501A (en) * | 2021-03-31 | 2021-07-30 | 浙江省机电设计研究院有限公司 | Mold device for horizontal rotation centrifugal casting of grinding ball and grinding ball forming method |
| CN216370114U (en) * | 2021-12-14 | 2022-04-26 | 邢书明 | Device for non-solid die forging grinding ball |
-
2021
- 2021-12-14 CN CN202111526355.0A patent/CN113996776B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799534A (en) * | 1986-03-03 | 1989-01-24 | Ube Industries, Ltd. | Vertical die casting machine |
| CN1073620A (en) * | 1992-12-24 | 1993-06-30 | 张瑞龙 | Multi-purpose equipment for casting and forging such as riser-free abrading-ball, bent axle, liner plate, gear |
| CN1171311A (en) * | 1997-06-06 | 1998-01-28 | 江西省进贤轻工机械有限公司 | Pressure casting technology for producing high-Cr grinding balls |
| CN110142392A (en) * | 2019-05-24 | 2019-08-20 | 陈铁石 | A kind of TUBE BY LIQUID EXTRUSION manufacturing process of steel ball |
| CN111069563A (en) * | 2020-01-09 | 2020-04-28 | 河北中泊防爆工具集团股份有限公司 | Metal casting mold and method for manufacturing aluminum bronze explosion-proof hammer |
| CN113182501A (en) * | 2021-03-31 | 2021-07-30 | 浙江省机电设计研究院有限公司 | Mold device for horizontal rotation centrifugal casting of grinding ball and grinding ball forming method |
| CN216370114U (en) * | 2021-12-14 | 2022-04-26 | 邢书明 | Device for non-solid die forging grinding ball |
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| CN113996776A (en) | 2022-02-01 |
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