CN202501147U - High polymer and bainite composite bent pipe for pump truck - Google Patents
High polymer and bainite composite bent pipe for pump truck Download PDFInfo
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- CN202501147U CN202501147U CN2012201099947U CN201220109994U CN202501147U CN 202501147 U CN202501147 U CN 202501147U CN 2012201099947 U CN2012201099947 U CN 2012201099947U CN 201220109994 U CN201220109994 U CN 201220109994U CN 202501147 U CN202501147 U CN 202501147U
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- bainite
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- bent pipe
- pump truck
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Abstract
The utility model discloses a high polymer and bainite composite bent pipe for a pump truck, belonging to the field of pipes. The composite bent pipe comprises a bainite bent pipe and a high polymer layer fastened and coated on the outer peripheral surface of the bainite bent pipe through thermal contraction. According to the high polymer and bainite composite bent pipe for the pump truck, potential safety hazards caused by insufficient toughness of a single bainite bent pipe are overcome, and the bainite bent pipe can be more safely used under a working condition requiring higher toughness and high impact.
Description
Technical field
The utility model belongs to the tubing field, relates in particular to a kind of bend pipe that is exclusively used in pump truck.
Background technique
Concrete mixer is the special device of delivering concrete in the process of construction of urban skyscraper, and major component is made up of car body, pump and pipeline etc., and pipe section has straight tube and bend pipe.From failure mode, bend pipe is the part that lost efficacy the most easily, and the life-span is the shortest, and the replacement cycle is short, has the call, and is the easily worn part of pump truck.Will change one time bend pipe in the shortest about 3 days.
Traditional bend pipe mainly contains two kinds: high manganese steel and low-alloy pipe.High manganese steel is present topmost bend pipe material, and it is organized as austenite, and this toughness of organizing is high; Hardness is low; Mainly be applicable to the working condition of high impact loads, high impact can make the austenite of workpiece surface produce work-hardening, thereby improves the wear resistance of workpiece surface; And heart portion still keeps soft austenite structure, and the toughness of whole work-piece is unaffected like this.Its last production technology needs high temperature solid solution to handle (shrend), makes the whole solid solutions of carbon in austenite, improves its wear resistance.
The low-alloy bend pipe is that to lean on the martensitic structure of the high hardness that bend pipe itself has wear-resistant, needs to add the alloying element that improves hardenability, and like Cr, noble elements such as Mo, price is high.Be characterized in that hardness is high, toughness is low, is suitable for using under the little working condition of impulsive load, and this steel need pass through and quench and tempering heat treatment, and the manufacture cycle is long.
Thin crystal bainite bend pipe is that on common low-alloy bend pipe basis, grow up a kind of has low cost, the low-alloy bend pipe of good combination property.It is organized, and not only crystal grain is tiny, hardness is high, and toughness is also high, and good combination property not only is suitable under the high abrasion condition, and can be used for having the operating mode of certain impact.It is organized as lower bainite.In addition; Cost is low, is embodied in two aspects: the one, need not add valuable alloying element (Cr and Mo etc.), the common alloying element Si of adding and Mn content not high (being lower than 5%); And the Mn that high manganese steel adds is up to 13%, so cost is far below high manganese steel and low alloy steel.Traditional Bainitic Steel all will add valuable alloying element such as Mo in order to obtain bainite.The 2nd, production technology is short, adopts austempering, and heat treatment temperature is low, does not need water or oil to cool off, so environmental protection more in the production process.
Be used for seeing that from making of pump truck bend pipe high manganese steel occupies major part, because its cost is low than the ordinary low-alloy steel bend pipe, in addition, and its good toughness, widely applicable.And common low-alloy bend pipe price is high, only uses in the high occasion of delivering concrete wear resistance.The thin crystal bainite bend pipe cost performance height that this patent is related, under the actual conditions service condition, wear resistance is respectively 2 times of high manganese steel, low-alloyed 0.9 times.And cost both had been lower than high manganese steel, the more remarkable common low-alloy bend pipe that is lower than.On market, embodied stronger competitive advantage.
Also have a kind of bend pipe made from chromium cast iron contained in addition, though hardness is high, wear resistance is good, because this cast iron toughness is very low, use occasion is restricted.
Although the bainite bend pipe of single material is compared good combination property with the bend pipe of other materials; Cost performance is also high, but under ask for something high abrasion high tenacity working condition, toughness can not meet the demands fully; Tube breaking phenomenon can occur once in a while, bring certain potential safety hazard.
The model utility content
The purpose of the utility model is: propose a kind of macromolecule and the thin compound bend pipe of crystal bainite; Overcome single bainite bend pipe because the safety problem that the deficiency of toughness is brought, this composite-curve be used for requirement more the high tenacity HI high impact working condition down the assurance bend pipe safety problem can not appear because of breaking.
The utility model purpose realizes through following technical proposals:
A kind of pump truck comprises the bainite bend pipe with macromolecule and bainite composite-curve, also comprises the fastening one deck macromolecule layer that is coated on said bainite bend pipe outer circumferential face of thermal shrinkage.
As optimal way, said macromolecule layer is made up of the complete macromolecule thermal shrinkable sleeve that thermal shrinkage is anchored on said bainite bend pipe outer circumferential face.
As optimal way, said macromolecule layer is made up of the banded thing of macromolecule that winding is anchored on said bainite bend pipe outer circumferential face.
As optimal way, said macromolecule layer covers the one coated by high-molecular film that is anchored on said bainite bend pipe outer circumferential face by injection moulding and constitutes.As optimal way, said coated by high-molecular film is fiber glass reinforced polypropylene or glass fiber enhanced nylon.
Said bainite bend pipe can be the Bainitic Steel bend pipe, also can be bainite iron bend pipe.
The beneficial effect of the utility model:, overcome the potential safety hazard that single Bainitic Steel (iron) toughness deficiency under than the HI high impact working condition is brought, thereby limited its use under higher impact condition in order to improve the whole toughness of composite-curve.The utility model is coated on the bend pipe periphery with macromolecular material; Macromolecule is outer combines closely into an organic whole with the internal layer bend pipe; Form whole higher toughness, kept the high wear resistance of bainite bend pipe simultaneously again, therefore; This composite-curve is whole when keeping high wear resistance, can be applicable under the working condition that requires more high tenacity and more HI high impact.
In addition; The composite-curve of the utility model has kept the high wear resistance of bainite bend pipe; Utilize high molecular high-plasticity again, in case under the fortuitous event that the bainite bend pipe breaks, the steel disc that the macromolecule skin is avoided breaking scatters; Effectively ensure the safety in the bend pipe using process, thus the Security that improves bend pipe.
Description of drawings
Fig. 1 is that macromolecule layer is the structural representation of macromolecule thermal shrinkable sleeve or the banded thing of macromolecule among the utility model embodiment;
Fig. 2 is the sectional view of Fig. 1;
Wherein 1 is that bend pipe, 2 is macromolecule thermal shrinkable sleeve or the banded thing of macromolecule;
Fig. 3 is that macromolecule layer is the sectional view of coated by high-molecular film among the utility model embodiment;
Fig. 4 is the sectional view of Fig. 3;
Wherein 1 is that bend pipe, 3 is coated by high-molecular film.
Embodiment
Following non-limiting examples is used to explain the utility model.
The bend pipe of the utility model can use disclosed Bainitic Steel making in the patent application before the applicant: the Chinese invention patent application, and number of patent application: 201010204483.9, publication number: among the CN 101892426A.In addition, under the working condition for satisfied more high wear resistance, can also use the iron bend pipe of doing of high abrasion bainite.
Pump truck comprises the bainite bend pipe with macromolecule and bainite composite-curve, also comprises the fastening one deck macromolecule layer that is coated on said bainite bend pipe outer circumferential face of thermal shrinkage.Composite pipe has three kinds, three kinds of composite pipes and preparation method thereof as follows:
(1) macromolecule layer is made up of the complete macromolecule thermal shrinkable sleeve that thermal shrinkage is anchored on bainite bend pipe outer circumferential face.The macromolecule thermal shrinkable sleeve is preferably polyethylene and processes, like Fig. 1, shown in 2:
A, the tubing high-molecular polythene prepared through extruder is through behind the crosslinking with radiation, and becoming diameter through expander is the 110%-130% of the width after the bend pipe bending, and thickness is the above thermal shrinkable sleeve of 0.5mm.
B, adopt the method for sandblast or shot-peening to remove bainite bend pipe outer surface rusty stain and spot.The bainite bend pipe (can be 275,190.5 and 180 bend pipes; Wherein the distance of bend pipe one port central shaft to the another port end face represented of 275 models is 275mm; 190.5 with 180 same), can be that Bainitic Steel also can be iron (down with) that is equipped with of bainite.
C, the polyethylene thermal shrinkable sleeve through crosslinking with radiation that size is suitable are inserted in bend pipe, its thermal shrinkable sleeve size of the bend pipe of different size and bend pipe specification coupling.
D, apply a torch and make thermal shrinkable sleeve tightly be coated on outer surface of steel tube after the thermal shrinkable sleeve heat shrink then.Shrinking back pyrocondensation tape thickness reaches more than the 0.6mm.
(2) macromolecule layer is made up of the banded thing of macromolecule that winding is anchored on bainite bend pipe outer circumferential face.The banded thing preferably polyethylene of macromolecule is processed, like Fig. 1, shown in 2:
A, adopt the method for sandblast or shot-peening to remove bainite bend pipe outer surface rusty stain and spot.The bend pipe specification can be 275,190.5 and 180 bend pipes.
B, through extruder high-molecular polythene to be prepared width suitable, the polyethylene band that thickness 0.5mm is above.
C, the polyethylene band that extruder is extruded are wrapped in the bend pipe outer surface immediately.
(3) macromolecule layer is made up of the one coated by high-molecular film that the injection moulding covering is anchored on bainite bend pipe outer circumferential face.Coated by high-molecular film is preferably fiber glass reinforced polypropylene or glass fiber enhanced nylon.The glass mass content is preferably 20-40%, like Fig. 3, shown in 4.
A, preparation Bainitic Steel/iron bend pipe.
B, adopt the method for sandblast or shot-peening to remove bainite bend pipe outer surface rusty stain and spot.
C, the bend pipe after the derusting by sandblasting (can be 275,190.5 and 180 bend pipes) is put in the mould of injection machine, injection temperature is 140-220 ℃, on the bend pipe outer surface, covers the high tenacity macromolecule of a layer thickness greater than 2mm.The high tenacity macromolecular material is fiber glass reinforced polypropylene or glass fiber enhanced nylon, and the glass ratio is 20-40%.The outer intensity of macromolecule after compound like this can reach more than the 100MPa specific elongation 10%.
Bainite bend pipe two ends are provided with flange in the aforementioned composite pipe (1) (2), and flange end is not covered by macromolecule layer, become the weak spot of overall security; And in composite pipe (3), form flange by the macromolecule of injection moulding, and thus, coated by high-molecular film can cover the whole surface of bainite bend pipe, has not had weak spot, and the general safety performance further is improved; Simultaneously, because the Placement of injection moulding, combining of macromolecule layer and bainite bend pipe is more effective, and the performance method (1) (2) of integral body has also had further raising.
Embodiment 1:
A kind of high-molecular polythene and bainite composite-curve, the bainite bend pipe of its 275 model is made up of the alloying element of following mass percent:
C 0.24%；
Si 0.22%；
Mn 2.21%；
Cr 0.4%；
All the other are iron and impurity element.
Its preparation method may further comprise the steps:
The raw material of A, proportionally configuration adopts conventional method melting in intermediate frequency furnace or electric arc furnaces, adds Al and CaSi and carries out deoxidation;
Raw material after B, the melting carries out external refining, produces the blank product through sand casting process or full form casting process;
C, blank are warming up to 400～700 ℃, are incubated 30～210 minutes, are warming up to 800～1300 ℃,
Be incubated 30～180 minutes, the cooling 5～30 minutes of coming out of the stove is cooled to 400～100 ℃, and tempering is incubated 1～5 hour;
D, air cooling are to room temperature.
As preferably, the Al that in said steps A, adds accounts for 0.1%～0.2% of steel quality, and CaSi accounts for 0.1%～0.2% of steel quality.
The bainite bend pipe of E, 275 models is through after the derusting by sandblasting, with diameter 190mm (be after the bend pipe bending width 130%), long 500mm, thickness 1.0mm high-molecular polythene thermal shrinkable sleeve are enclosed within outside the bend pipe; Apply a torch and circumferentially come the reuse flame heating along thermal shrinkable sleeve, at first begin heating in the central position of thermal shrinkable sleeve length, during heating, the thermal shrinkable sleeve at heating position can shrink and be close to the bainite bend pipe; Flame moves outward and continues along circumferentially heating back and forth then, shrinks up to a side to finish, and polyethylene tightly is coated on above the bainite bend pipe.
Performance parameter is seen table 1.
Embodiment 2:
Preparation method steps A-the D of bainite bend pipe is identical with embodiment 1.Step e is: put into injection machine to the mould that 275 bainite bend pipes are housed, after then the heating of high tenacity macromolecule fully being mixed, be injected in the mould at 160 ℃, coat a layer thickness has flanged joint for the 3.2mm two ends macromolecule layer in bainite bend pipe outside.The high tenacity macromolecule is the nylon that contains glass 25%.
Embodiment 3:
A kind of high-molecular polythene and bainite composite-curve, the bainite bend pipe of its 275 model is made up of the alloying element of following mass percent:
C 0.35%；
Si 1.63%；
Mn 2.10%；
Cr 1.34%；
All the other are iron and impurity element.Performance parameter is seen table 1.
Its preparation method is with embodiment 1.But the high-molecular polythene thermal shrinkable sleeve that adopts be of a size of diameter 169mm (for the width after the bend pipe bending 115%), long 500mm, thickness 1.2mm.
Embodiment 4:
A kind of high-molecular polythene and bainite composite-curve, the bainite bend pipe of its 275 model is made up of the alloying element of following mass percent:
C 0.52%；
Si 2.20%；
Mn 3.56%；
Cr 2.26%；
All the other are iron and impurity element.Performance parameter is seen table 1.
Its preparation methods steps A-D is identical with embodiment 1.Step e is: adopting extruder to extrude width is the black high-molecular polythene band of 0.8mm for 35mm thickness, and is wrapped in 275 bend pipes outside.
Embodiment 5:
The bainite bend pipe outside that embodiment's 1 same batch is produced does not coat thermal shrinkable sleeve, the pressure of directly fetching water.
Embodiment 6:
Pyrocondensation belt is not twined, the pressure of directly fetching water in the bainite bend pipe outside that embodiment's 4 same batch are produced.
Table 1 the utility model mechanical property table
The mechanical property test experience method of the utility model is pressed the related request of GB/T230.1-2004, GB/T229-1994 and GB/T11352-2009 and is carried out.Can be known that by last table behind the increase macromolecule layer, it is not enough that macromolecule layer has remedied internal layer Bainitic Steel (iron) toughness, forms whole higher toughness, the whole mechanical property of this composite structure, Security are compared the bainite naked pipe and are able to effective raising.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. a pump truck comprises the bainite bend pipe with macromolecule and bainite composite-curve, it is characterized in that: also comprise the fastening one deck macromolecule layer that is coated on said bainite bend pipe outer circumferential face of thermal shrinkage.
2. pump truck as claimed in claim 1 is characterized in that with macromolecule and bainite composite-curve: said macromolecule layer is made up of the complete macromolecule thermal shrinkable sleeve that thermal shrinkage is anchored on said bainite bend pipe outer circumferential face.
3. pump truck as claimed in claim 1 is characterized in that with macromolecule and bainite composite-curve: said macromolecule layer is made up of the banded thing of macromolecule that winding is anchored on said bainite bend pipe outer circumferential face.
4. pump truck as claimed in claim 1 is characterized in that with macromolecule and bainite composite-curve: said macromolecule layer covers the one coated by high-molecular film that is anchored on said bainite bend pipe outer circumferential face by injection moulding and constitutes.
5. pump truck as claimed in claim 4 is characterized in that with macromolecule and bainite composite-curve: said coated by high-molecular film is fiber glass reinforced polypropylene or glass fiber enhanced nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201099947U CN202501147U (en) | 2012-03-22 | 2012-03-22 | High polymer and bainite composite bent pipe for pump truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201099947U CN202501147U (en) | 2012-03-22 | 2012-03-22 | High polymer and bainite composite bent pipe for pump truck |
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| CN202501147U true CN202501147U (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201099947U Expired - Fee Related CN202501147U (en) | 2012-03-22 | 2012-03-22 | High polymer and bainite composite bent pipe for pump truck |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561698A (en) * | 2012-03-22 | 2012-07-11 | 江油贝得力金属新材料有限公司 | High polymer and bainite composite elbow pipe for pump truck |
-
2012
- 2012-03-22 CN CN2012201099947U patent/CN202501147U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561698A (en) * | 2012-03-22 | 2012-07-11 | 江油贝得力金属新材料有限公司 | High polymer and bainite composite elbow pipe for pump truck |
| CN102561698B (en) * | 2012-03-22 | 2015-01-07 | 四川贝氏新材料有限公司 | High polymer and bainite composite elbow pipe for pump truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN BAINITE NEW MATERIAL CO., LTD. Free format text: FORMER NAME: JIANGYOU BEIDELI NEW METAL MATERIAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 621701 Henan Industrial Park, Jiangyou, Sichuan, Mianyang Patentee after: SICHUAN BAYESIAN NEW MATERIALS CO., LTD. Address before: 621701 Henan Industrial Park, Jiangyou, Sichuan, Mianyang Patentee before: Jiangyou Beideli Metal New Material Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20170322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |