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CN111434405B - Preparation method and device of hot stamping part - Google Patents

Preparation method and device of hot stamping part Download PDF

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Publication number
CN111434405B
CN111434405B CN201910505279.1A CN201910505279A CN111434405B CN 111434405 B CN111434405 B CN 111434405B CN 201910505279 A CN201910505279 A CN 201910505279A CN 111434405 B CN111434405 B CN 111434405B
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blank
hot
spraying
powder
coating
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CN111434405A (en
Inventor
安健
陈汉杰
王波
李�浩
张凤操
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Suzhou Prysler Technology Co ltd
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Suzhou Pressler Advanced Forming Technologies Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B05D3/0236—Pretreatment, e.g. heating the substrate with ovens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0486—Operating the coating or treatment in a controlled atmosphere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a method and a device for preparing a hot stamping part. The preparation method of the hot stamping part comprises the following steps: blanking the bare steel plate into blanks; placing the blank into an oxygen-free heating furnace to be heated to 880-950 ℃; performing powder spraying on the heated blank in an oxygen-free heating furnace to form a blank with a coating on the surface; and putting the blank with the coating on the surface into a die for hot stamping forming to form a hot stamping part. The hot stamping part prepared by the method has good oxidation resistance and corrosion resistance, and the method can improve the heating rate of the blank and reduce the risk of erosion of the heating furnace roller.

Description

Preparation method and device of hot stamping part
Technical Field
The invention relates to the technical field of hot stamping forming, in particular to a method and a device for preparing a hot stamping part.
Background
The traditional hot stamping parts are prepared from bare steel plates (steel plates without coatings and plating layers on the surfaces), are easy to generate oxide skins in the using process, and have no anti-corrosion capability. In order to improve the oxidation resistance and corrosion resistance of hot stamping parts, aluminum-silicon plating plates, zinc-based plating plates and the like which are widely applied are developed on the market at present.
However, when applied to a hot stamping process, aluminum-silicon-plated sheets and zinc-based-plated sheets also have some problems. Specifically, when the aluminum-silicon coated plate is heated to a temperature at which the matrix becomes austenitized, the coating becomes an sendust intermetallic compound, and the coating does not have a cathodic protection function, so that the corrosion resistance of the final part is poor. The zinc or zinc-iron alloy coating in the zinc-based plating plate can be changed into a zinc-iron intermetallic compound in the austenitizing heating process of a matrix, and in the process, if the heating and heat-preserving time of the zinc-iron alloy coating plate is short (the time for enabling the matrix of the blank to reach the austenitizing temperature is too short), the coating compound contains a large amount of delta Zn-Fe and gamma 1Zn-Fe with low melting points, and because the austenitizing temperature generally exceeds the melting points of the phases during the hot forming of the blank, the coating on the surface of the blank can generate LMIE (liquid metal crack fracture); and if the blank is heated and kept for too long time, the content of the gamma Zn-Fe in the coating compound is reduced, and the alpha Fe-Zn is increased, so that the coating does not have the cathode protection function.
In conclusion, for the zinc-based plating plate, only when the Zn-Fe compound of the coating has a large amount of the f Zn-Fe and no longer contains f 1 and delta phases, the LMIE of the coating can be avoided and the coating has the cathode protection function.
When the existing pure zinc coating plate or the zinc-iron alloy coating plate with the iron content of 1 wt.% is applied to a hot stamping process, when the blank is subjected to austenitizing heating and heat preservation, the mutual diffusion of the coating of the blank and a matrix can form a zinc-iron compound coating with multiple phases (alpha, delta, gamma 1 and gamma). It is therefore difficult to obtain the absolute preponderance of the r Zn-Fe coating on hot stamped parts. Moreover, most coatings of the coated plates are coated on the steel plate in a hot dip coating mode, so that the coatings can generate liquefaction phenomena in the heating process of the coated plates, and the liquefied coatings can corrode a ceramic furnace roller in a heating furnace and easily cause furnace roller breakage.
Disclosure of Invention
In order to overcome the defects in the prior art, embodiments of the present invention provide a method and an apparatus for manufacturing a hot stamped part, which are used to solve at least one of the above problems.
The embodiment of the application discloses: a preparation method of a hot stamping part comprises the following steps:
blanking the bare steel plate into blanks;
placing the blank into an oxygen-free heating furnace to be heated to 880-950 ℃;
performing powder spraying on the heated blank in an oxygen-free heating furnace to form a blank with a coating on the surface;
and putting the blank with the coating on the surface into a die for hot stamping forming to form a hot stamping part.
Specifically, the powder spraying comprises thermal spraying, cold spraying and electrostatic spraying.
Specifically, the gas used for powder spraying is an inert gas.
Specifically, in the step of performing powder spraying on the heated blank in an oxygen-free heating furnace to form the blank with the coating on the surface, the powder for spraying the blank comprises one or more of pure aluminum powder, aluminum-silicon alloy powder and zinc-iron alloy powder.
Specifically, in the step of performing powder spraying on the heated blank in an oxygen-free heating furnace to form the blank with the coating on the surface, the surface of the blank forms a single-layer or multi-layer coating.
Specifically, the anaerobic heating furnace comprises a hot area for heating the blank and a cold area for spraying the blank, the hot area is provided with a ceramic furnace roller for rolling and heating the blank, and the cold area is provided with a metal furnace roller for supporting the blank; the step of performing powder spraying on the heated blank in an oxygen-free heating furnace to form the blank with the coating on the surface further comprises the following steps of: after the billet was heated to 880-950 ℃ in the hot zone, the billet was transferred from the hot zone to the cold zone and the billet was sprayed.
In particular, the total thickness of the coating is between 1 and 40 μm.
Specifically, in the step of powder spraying the heated blank in an oxygen-free heating furnace to form the blank with a coating on the surface, the particle size of the powder for spraying the blank is between 1 and 20 mu m.
Specifically, in the step of placing the blank with the coating on the surface into a die for hot stamping forming so as to form a hot stamping part, the temperature of the blank formed in the die is between 650 ℃ and 800 ℃.
This embodiment still provides a hot stamping workpiece's preparation facilities, including doffer, heating device, spraying device and forming device, wherein:
the blanking device is used for blanking the bare steel plate into blanks;
the heating device is used for heating the blank to ensure that the temperature of the blank reaches between 880 and 950 ℃;
the spraying device is used for performing powder spraying on the heated blank to enable the surface of the blank to have a coating;
the forming mechanism is used for forming the blank with the coating so as to form a stamping part.
The invention has the following beneficial effects:
1. blanks formed by blanking the bare steel plate are placed in the same oxygen-free heating furnace to finish austenitizing heating and powder spraying in sequence, and because the coating liquefaction phenomenon does not exist in the temperature rising process of the bare steel plate blanks, the bare steel plate blanks can be rapidly heated, so that the production efficiency is improved; and the blank reaching the austenitizing temperature is subjected to powder spraying, and the blank utilizes a large amount of heat of the blank to enable the powder to be melted and attached to the surface of the blank so as to form a coating with an oxidation-resistant or corrosion-resistant function.
2. The bare steel plate blank does not have the phenomenon of metal liquefaction in the heating process, so the ceramic furnace roller cannot be corroded.
3. In the process of discharging the blank to transfer the blank into the die, the surface of the blank is not oxidized by oxygen in the air due to the protective coating, so that the surface quality of the hot stamping part is improved.
4. When the coating on the surface of the blank prepared by the method of the embodiment is adopted, the heat of the blank is consumed in the process of melting and attaching the powder, so that when the coating is formed, the temperature of the blank is reduced to a certain extent, the temperature of the blank is lower than the liquefaction temperature of the coating, namely the coating is not liquefied, and the cathode protection function of the coating is well maintained.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of a method of manufacturing a hot stamped part according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the method for manufacturing a hot stamping part according to the embodiment includes the following steps:
first, a bare steel plate (also called a non-coated plate, a non-coated plate) is blanked according to the size and shape requirements of a part to obtain a blank. Specifically, in this step, the blanking manner may be cold stamping blanking or laser cutting blanking, so as to adapt to steel plates with different materials and thicknesses. The bare steel plate comprises the following components in percentage by mass: c: 0.1% -0.3%, Si: 0.05% -1.0%, Mn: 0.5% -2.0%, Cr: 0.02 to 1.0 percent of the total weight of the alloy, less than 0.01 percent of B, less than or equal to 0.5 percent of Mo, less than or equal to 0.2 percent of Nb, less than or equal to 0.2 percent of V, less than or equal to 0.2 percent of Ti, and the balance of Fe and other inevitable impurities.
Then, the blank is placed into an oxygen-free heating furnace to be heated to 880-950 ℃. Specifically, the blank is placed into a vacuum heating furnace or an inert atmosphere heating furnace to be heated for 1-10min, so that the temperature of the blank reaches 880-950 ℃, and the blank is subjected to heat preservation for about 180s at the temperature, so that the blank is fully austenitized. The blank with the coating layer is heated by an oxygen-free heating furnace, so that the blank and metal powder on the surface of the blank can be prevented from being oxidized in a high-temperature environment.
Then, the heated billet is subjected to powder spraying in an oxygen-free heating furnace to form a billet with a coating layer on the surface. In this step, the powder is sprayed on the surface of the blank with the temperature between 880-900 ℃, and the high heat of the blank can cause the powder to be melted and firmly adhered on the surface of the blank, so that the surface of the blank forms a coating with protective performance on the base body of the blank. Specifically, in this embodiment, the front and back surfaces of the blank are sprayed by means of thermal spraying, cold spraying, electrostatic spraying, or the like, and an inert gas is used as a carrier gas during the spraying (gas is used as a carrier in the spraying), and a preferable carrier gas is nitrogen. The powder for spraying the blank comprises one or more of pure aluminum powder, aluminum-silicon alloy powder and zinc-iron alloy powder, and the particle size of the powder is 1-20 mu m, so that the powder can form a uniform and compact coating on the surface of the blank. Further, the number of layers formed on the same surface of the blank may be a single layer or may be multiple layers, that is, the coating may be sprayed one or more times on the same surface of the blank so that the total thickness of the coating on the same surface of the blank is between 1 and 40 μm, preferably between 1 and 30 μm.
And then, putting the blank with the coating on the surface into a die for hot stamping forming to form a hot stamping part. Preferably, the temperature of the blank taken out of the oxygen-free heating furnace and entering the mold for molding is between 650-800 ℃ so as to ensure that the blank has good molding performance.
Specifically, the anaerobic heating furnace comprises a hot area for heating the blank and a cold area for spraying the blank, the hot area is communicated with the cold area and is in an anaerobic environment, and the blank is directly conveyed to the cold area for spraying after being heated in the hot area. It should be noted that the cold zone is not provided with a heating device in the cold zone relative to the hot zone, but the temperature of the cold zone is usually kept between 650 and 800 ℃ to ensure that the blank can have a tapping temperature between 650 and 800 ℃ after the spraying is completed. Furthermore, the ceramic furnace roller for rolling and heating the blank is arranged in the hot zone, and the ceramic furnace roller has excellent high-temperature resistance, so that the ceramic furnace roller is adopted to roll and heat the blank in the hot zone, and the stability of a heating process can be ensured; the cold area is provided with a metal furnace roller for supporting the blank to perform powder spraying, and the metal furnace roller can be used for supporting the blank because the cold area is not provided with a heating device, the temperature of the metal furnace roller is reduced relative to the temperature of the hot area, and the high temperature resistance of the furnace roller is reduced. By adopting the scheme, the coating formed on the surface of the blank can not corrode the ceramic furnace roller in the hot zone.
By means of the scheme, the preparation method of the hot stamping part has the following advantages:
1. blanks formed by blanking the bare steel plate are placed in the same oxygen-free heating furnace to finish austenitizing heating and powder spraying in sequence, and because the coating liquefaction phenomenon does not exist in the temperature rising process of the bare steel plate blanks, the bare steel plate blanks can be rapidly heated, so that the production efficiency is improved; and the blank reaching the austenitizing temperature is subjected to powder spraying, and the blank utilizes a large amount of heat of the blank to enable the powder to be melted and attached to the surface of the blank so as to form a coating with an oxidation-resistant or corrosion-resistant function.
2. The bare steel plate blank does not have the phenomenon of metal liquefaction in the heating process, so the ceramic furnace roller cannot be corroded.
3. In the process of discharging the blank to transfer the blank into the die, the surface of the blank is not oxidized by oxygen in the air due to the protective coating, so that the surface quality of the hot stamping part is improved.
4. When the coating on the surface of the blank prepared by the method of the embodiment is adopted, the heat of the blank is consumed in the process of melting and attaching the powder, so that when the coating is formed, the temperature of the blank is reduced to a certain extent, the temperature of the blank is lower than the liquefaction temperature of the coating, namely the coating is not liquefied, and the cathode protection function of the coating is well maintained.
The following four cases are used to illustrate the present embodiment:
case 1
Firstly, a blanking method of laser cutting is adopted to blank a 1.5mm thick 22MnB5 bare steel plate, and a blank of a B column of a vehicle body is obtained.
Next, the B-pillar preform was placed in a vacuum heating furnace and heated to 930 ℃ and the temperature was maintained at this temperature for 180 seconds.
Then, powder spraying was performed on both surfaces of the heated blank using pure aluminum powder in a vacuum heating furnace to form pure aluminum coatings with a thickness of 20 μm on the surfaces of the blank, respectively.
And then, discharging the blank out of the furnace, and placing the blank into a die for forming to obtain the B-pillar hot stamping part.
Case 2
Firstly, a blanking method of laser cutting is adopted to blank a 1.6mm thick 22MnB5 bare steel plate, and a blank of a B column of a vehicle body is obtained.
Next, the B-pillar preform was placed in a vacuum heating furnace and heated to 930 ℃ and the temperature was maintained at this temperature for 180 seconds.
Then, in a vacuum heating furnace, firstly, pure aluminum powder with the powder particle size of 1-10 mu m is adopted to perform powder spraying on the reverse side (namely the inner surface of the B column) of the heated blank, so that a pure aluminum coating with the thickness of 10-20 mu m is formed on the reverse side of the blank; then, spraying a layer of pure aluminum powder with the thickness of 10-20 μm on the front surface of the blank (namely the outer surface of the B column), and spraying a layer of zinc-iron binary alloy powder on the pure aluminum powder layer, wherein the iron content (by mass) in the zinc-iron binary alloy powder is 3-25%, and the total thickness of the coating on the front surface of the blank is 10-20 μm.
And then, discharging the blank out of the furnace, and placing the blank into a die for forming to obtain the B-pillar hot stamping part.
Case 3
Firstly, a blanking method of laser cutting is adopted to blank a 1.6mm thick 22MnB5 bare steel plate, and a blank of a B column of a vehicle body is obtained.
Next, the B-pillar preform was placed in a vacuum heating furnace and heated to 930 ℃ and the temperature was maintained at this temperature for 180 seconds.
Secondly, spraying aluminum-silicon alloy powder on the front surface and the back surface of the heated blank in a vacuum heating furnace to form an aluminum-silicon coating on the surface of the blank; then spraying a layer of zinc-iron binary alloy powder on each aluminum-silicon coating, wherein the iron content (by mass) in the zinc-iron binary alloy powder is 3-25%; the total thickness of the coatings on the front and back surfaces of the blank is between 10 and 20 mu m.
And then, discharging the blank out of the furnace, and placing the blank into a die for forming to obtain the B-pillar hot stamping part.
Case 4
Firstly, a blanking method of laser cutting is adopted to blank a 1.5mm thick 22MnB5 bare steel plate, and a blank of a B column of a vehicle body is obtained.
Next, the B-pillar preform was placed in a vacuum heating furnace and heated to 930 ℃ and the temperature was maintained at this temperature for 180 seconds.
And then, performing powder spraying on two surfaces of the heated blank in a vacuum heating furnace by using zinc-iron binary alloy powder to form a zinc-iron alloy coating with the thickness of 20 mu m on each surface of the blank, wherein the iron content (by mass) in the zinc-iron binary alloy powder is between 20 and 25 percent.
And then, discharging the blank out of the furnace, and placing the blank into a die for forming to obtain the B-pillar hot stamping part.
This embodiment preparation facilities of hot stamping workpiece, including doffer, heating device, spraying device and forming device, wherein:
the blanking device is used for blanking the bare steel plate into blanks.
The heating device is used for heating the blank to ensure that the temperature of the blank reaches between 880 and 950 ℃; preferably, the heating device comprises a hot zone for heating the blank and a cold zone for spraying the blank, the hot zone is provided with a ceramic furnace roller for rolling and heating the blank, and the cold zone is provided with a metal furnace roller for supporting the blank; the blank was heated to 880-950 ℃ in the hot zone and transferred to the cold zone for spraying.
The spraying device is used for performing powder spraying on the heated blank to enable the surface of the blank to have a coating.
The forming mechanism is used for forming the blank with the coating so as to form a stamping part.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (9)

1. The preparation method of the hot stamping part is characterized by comprising the following steps:
blanking the bare steel plate into blanks;
placing the blank into an oxygen-free heating furnace to be heated to 880-950 ℃;
performing powder spraying on the heated blank in an oxygen-free heating furnace to form a blank with a coating on the surface;
and putting the blank with the coating on the surface into a die for hot stamping forming to form a hot stamping part.
2. A method of manufacturing a hot stamped part as claimed in claim 1 wherein the powder spraying comprises thermal spraying, cold spraying, electrostatic spraying.
3. A method of manufacturing a hot stamped part according to claim 1 wherein the gas used for powder spraying is an inert gas.
4. The method for producing a hot-stamped part according to claim 1, wherein in the step of powder-spraying the heated blank in an oxygen-free heating furnace to form a blank having a coating layer on the surface thereof, the powder used for the powder-spraying of the blank comprises one or more of pure aluminum powder, aluminum-silicon alloy powder, and zinc-iron alloy powder.
5. A method of manufacturing a hot stamped part according to claim 1, wherein in the step of powder spraying the heated blank in an oxygen-free heating furnace to form a blank having a coating on the surface, the surface of the blank forms a single-layer or multi-layer coating.
6. A method of manufacturing a hot stamped part according to claim 1 wherein the oxygen-free heating furnace comprises a hot zone for heating the billet and a cold zone for spraying the billet, the hot zone being provided with ceramic furnace rollers for rolling heating the billet and the cold zone being provided with metal furnace rollers for supporting the billet; the step of performing powder spraying on the heated blank in an oxygen-free heating furnace to form the blank with the coating on the surface further comprises the following steps of: after the billet was heated to 880-950 ℃ in the hot zone, the billet was transferred from the hot zone to the cold zone and the billet was sprayed.
7. Method for the production of a hot stamping according to claim 1, characterized in that the total thickness of the coating is between 1 and 40 μm.
8. A method of manufacturing a hot-stamped part according to claim 1, wherein in the step of powder-spraying the heated blank in an oxygen-free heating furnace to form a blank having a coating layer on the surface, the powder used for the powder-spraying of the blank has a particle size of 1 to 20 μm.
9. The method for producing a hot-stamped part according to claim 1, wherein in the step of "placing the blank having the coating layer on the surface thereof in a die for hot-stamping to form a hot-stamped part", the temperature at which the blank is formed in the die is between 650 ℃ and 800 ℃.
CN201910505279.1A 2019-06-12 2019-06-12 Preparation method and device of hot stamping part Active CN111434405B (en)

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DE10333166A1 (en) * 2003-07-22 2005-02-10 Daimlerchrysler Ag Press-hardened component and method for producing a press-hardened component
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CN101724737B (en) * 2009-12-25 2011-12-21 机械科学研究总院先进制造技术研究中心 Steel plate hot forming method based on anti-oxidation coating and production line for implementing same
DE102012024626A1 (en) * 2012-12-17 2014-06-18 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Vehicle body and method of manufacturing a molded article therefor
KR101500184B1 (en) * 2013-10-31 2015-03-18 주식회사 포스코 Hot press formed product having excellent resistance to corrosion and mathod for producing thereof
JP6043272B2 (en) * 2013-12-16 2016-12-14 株式会社神戸製鋼所 Manufacturing method of press-molded products
CN107127238B (en) * 2016-02-26 2019-12-27 宝山钢铁股份有限公司 Hot stamping forming method for zinc-based plated steel plate or steel strip
CN106466697B (en) * 2016-08-12 2020-01-31 宝山钢铁股份有限公司 Hot stamped Steel products with an aluminum or aluminum alloy coating and method for the production thereof
CN206838950U (en) * 2017-05-03 2018-01-05 苏州普热斯勒先进成型技术有限公司 A kind of heat stamping and shaping production line with pre-cooler
CN109013105B (en) * 2018-08-31 2023-04-21 苏州普热斯勒先进成型技术有限公司 Automatic spraying line and thermoforming production line
CN109434384B (en) * 2018-11-16 2021-06-22 苏州普热斯勒先进成型技术有限公司 Preparation method and device of coated steel plate and hot stamping method

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