CN109434384B - Preparation method and device of coated steel plate and hot stamping method - Google Patents
Preparation method and device of coated steel plate and hot stamping method Download PDFInfo
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- CN109434384B CN109434384B CN201811364328.6A CN201811364328A CN109434384B CN 109434384 B CN109434384 B CN 109434384B CN 201811364328 A CN201811364328 A CN 201811364328A CN 109434384 B CN109434384 B CN 109434384B
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- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a preparation method and a device of a coated steel plate and a hot stamping method. The preparation method of the coated steel plate comprises the following steps: blanking a bare steel plate to be processed according to requirements; and carrying out double-sided thermal spraying on the blanked bare steel plate by adopting a high-temperature anti-oxidation material to form a coated steel plate. The hot stamping method comprises the following steps: blanking a bare steel plate to be processed according to the molding requirement; carrying out surface treatment on the blanked bare steel plate to form a coated steel plate; heating the coated steel plate after the surface treatment is finished; and stamping the heated coated steel plate. The invention adds the surface treatment steps of double-sided thermal spraying and the like on the bare steel plate by adopting high-temperature anti-oxidation materials between the two steps of blanking and heating the bare steel plate to form the coated steel plate, and the protective coated steel plate can avoid oxidation reaction when being heated and has the advantages of improving the product quality, saving production resources and the like.
Description
Technical Field
The invention relates to the technical field of hot forming, in particular to a preparation method and a device of a coated steel plate and a hot stamping method.
Background
At present, in the high-temperature hot forming process, a steel plate needs to be heated to a temperature above austenitizing temperature (generally about 900 ℃) and then formed in a corresponding die. However, the high temperature forming process generally tends to generate oxides on the surface of the steel sheet, which affect the mechanical properties and surface treatment properties of the steel sheet and need to be removed in a subsequent process.
In order to solve the problem that the steel plate is oxidized in the high-temperature forming process and improve the corrosion resistance of the steel plate, the coating process is increasingly applied to the steel plate for hot forming. At present, a steel plate with an Al-Si coating on the surface, which is produced by a hot dip coating process, is often used as a hot formed blank, the steel plate with the Al-Si coating is usually delivered from a coil stock, a dense aluminum oxide film is easily formed on the surface, and the corrosion resistance is excellent, but the following problems also exist:
firstly, when a steel plate with an Al-Si coating is adopted for hot forming, the steel plate with the Al-Si coating needs to be heated in a heating furnace for a certain heating time, specifically, the heating rate is generally less than 7 ℃/s, so that Fe element in the steel plate with the Al-Si coating has enough time to diffuse into an aluminum coating to form a high-melting-point Fe-Al-Si phase, and the melting of the aluminum coating at high temperature is avoided, and the heating rate can cause low production efficiency. In addition, in the process of actually heating the traditional steel plate with the Al-Si coating to 930 ℃, Al in the Al-Si coating is often melted to cause adhesion to the furnace roller, so that on one hand, surface nodulation of the furnace roller is caused, and the service life of the furnace roller is greatly reduced; on the other hand, the Al-Si coating is adhered to a furnace roller, so that the material sheet deviates in movement, and is positioned wrongly when being fed into a mold, parts are scrapped if the parts are light, and the mold is damaged if the parts are heavy.
Secondly, the existing steel plate with the Al-Si coating needs to be subjected to laser tailor-welding sometimes before hot forming, in order to avoid that the weld seam is positioned on the surface of the coating to influence the weld seam strength, or the Al-Si coating is dissolved in the weld seam to influence the weld seam strength, so that the quality of a hot forming product is influenced, the Al-Si coating needs to be removed and then the laser tailor-welding is carried out on the steel plate, and the working procedure can cause the increase of production working hours and cost.
Furthermore, the conventional steel sheet having an Al-Si coating layer may be rolled to form a variable cross-section steel sheet before hot forming, that is, different regions of the steel sheet have different thicknesses, and the rolling reduction of the steel sheet having an Al-Si coating layer is different in different regions, so that the Al-Si coating layer has different deformation degrees, that is, the Al-Si coating layer, particularly the rolling reduction, of the different regions of the steel sheet increases after rolling, and if the rolling reduction is 30% or less, the transition layer in the Al-Si coating layer is very cracked, which affects the corrosion resistance and oxidation resistance.
Thirdly, because the steel plate with the Al-Si coating produced by the hot dipping process is generally coil material when leaving a factory, the plate material needs to be punched and blanked in the actual hot forming production, the surface of the waste material after punching and blanking also has the coating, and the waste material with the coating is difficult to be added and recycled.
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 coated steel sheet, and a hot stamping method, which are used to solve at least one of the above problems.
The embodiment of the application discloses: a preparation method of a coated steel plate comprises the following steps:
blanking a bare steel plate to be processed according to requirements;
and carrying out thermal spraying on the blanked bare steel plate by adopting a spraying material to form a coated steel plate.
Specifically, in the step of blanking the bare steel plate to be processed according to the requirement, the blanking method comprises cold stamping or laser cutting.
Specifically, in step "treat the naked steel sheet of processing and carry out the blanking according to the requirement" and step "adopt spray material to carry out hot spraying to the naked steel sheet after the blanking is accomplished, form and still include between the coating steel sheet": and carrying out intermediate treatment on the blanked bare steel plate.
Specifically, the intermediate processing step includes performing laser tailor welding on the plurality of blanked bare steel plates, or performing rolling on the blanked bare steel plates.
Specifically, in the step of performing thermal spraying on the blanked bare steel plate by using a spraying material to form a coated steel plate, the method further comprises the following steps before performing thermal spraying on the bare steel plate:
deoiling the surface of the bare steel plate;
cleaning the deoiled bare steel plate;
drying the cleaned bare steel plate;
and (4) carrying out sand blasting on the dried bare steel plate.
Specifically, the spraying material comprises aluminum-silicon alloy, ferrochrome alloy or stainless steel.
Specifically, after step "adopt spray material to carry out hot spraying to the naked steel sheet after the blanking is accomplished, form the coating steel sheet", still include: and remelting the coated steel plate after the thermal spraying is finished.
The embodiment of the application also discloses: a hot stamping method comprising the steps of:
the preparation method of the coated steel plate provided by the embodiment of the invention;
heating the coated steel plate to 930-980 ℃;
and stamping the heated coated steel plate.
In the step "heating the coated steel plate to between 930 and 980 ℃, when the coating material of the coated steel plate is ferrochrome or stainless steel, the heating rate of the coated steel plate is between 45 and 55 ℃/s.
The embodiment of the invention also discloses a preparation device of the coated steel plate, which comprises a blanking mechanism used for blanking the bare steel plate and a thermal spraying mechanism used for thermally spraying the blanked bare steel plate to form the coated steel plate.
The invention has the following beneficial effects:
1. between the two steps of blanking and heating the bare steel plate, the surface treatment steps of carrying out double-sided thermal spraying and the like on the bare steel plate by adopting a high-temperature anti-oxidation material are added to form a coated steel plate, and even if a layer of high-temperature anti-oxidation protective film is formed on the surface of the bare steel plate, the protective film can prevent the steel plate from generating oxidation reaction when being heated;
2. the bare steel plate is thermally sprayed after being blanked, so that the waste materials generated during blanking of the bare steel plate fed by the coiled material are not coated, the bare steel plate is convenient to recycle, and resources are saved;
3. in the laser tailor-welding process, the process of removing the coating of the steel plate with the Al-Si coating to expose the bare steel plate can be saved, and the working time and resources are saved;
4. in the rolling process, the surface of the bare steel plate is not coated, so that the problem of coating cracking caused by different rolling reduction rates is solved, the bare steel plate is subjected to spraying treatment after being rolled, the coated steel plate with uniform coating thickness can be obtained, and the application range of the coated steel plate is enlarged;
5. compared with the traditional Al-Si coating, the high-temperature anti-oxidation material coating does not need to wait for Fe element to diffuse into the coating in the heating process, so that the high-temperature anti-oxidation material coating steel plate can be heated at the heating rate of 45-55 ℃/s, and the production efficiency is greatly improved;
6. the high-temperature anti-oxidation material coating cannot be melted in the heating process of the steel plate, and cannot be adhered to a rolling rod to cause the rolling rod to be nodulated, so that the service life of the rolling rod is prolonged.
In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The preparation method of the coated steel plate comprises the following steps:
blanking a bare steel plate to be processed according to the requirements of the shape, the size and the like of a product, wherein the specific blanking method can be cold stamping blanking or laser cutting blanking so as to adapt to bare steel plates of different materials and thicknesses;
and carrying out double-sided thermal spraying on the blanked bare steel plate by adopting a spraying material to form a coated steel plate. Specifically, the thermal spraying method can be electric arc thermal spraying or flame spraying, and preferably, the thickness of the coating layer of the coated steel plate is 20-50 μm; the spraying material is a high-temperature anti-oxidation material, the melting point of the spraying material is above 900 ℃, the spraying material can be in a powder shape or a strand shape, and the spraying material comprises aluminum-silicon alloy, ferrochrome alloy or 410 stainless steel.
Specifically, in step "treat the naked steel sheet of processing and carry out the blanking" and step "adopt spray material to carry out hot spraying to the naked steel sheet after the blanking is accomplished, form and still include between the coating steel sheet": and carrying out intermediate treatment on the blanked bare steel plate. Sometimes, in order to meet the requirement that different parts of a product have different thicknesses, a plurality of blanked steel plates need to be subjected to laser tailor welding, or a blanked steel plate needs to be rolled, so that different parts of the steel plate have different thicknesses. Therefore, after the bare steel plate to be processed is blanked according to requirements, a plurality of bare steel plates are subjected to laser tailor-welding, or a bare steel plate is rolled firstly, and then the laser tailor-welding or rolled bare steel plate is subjected to double-sided thermal spraying. The laser tailor welding is firstly carried out on the bare steel plate, and then the thermal spraying is carried out, so that the welding seam can be ensured to be formed on the bare steel plate and has enough strength; the bare steel plate is rolled and then thermally sprayed, so that the thickness of the coating on the rolled steel plate is uniform, and the application range of the coated steel plate is expanded.
Specifically, before carrying out double-sided thermal spraying on a bare steel plate after blanking, after laser tailor-welding or after rolling, firstly carrying out the following steps of: deoiling the surface of the bare steel plate; cleaning the deoiled bare steel plate; drying the cleaned bare steel plate; carrying out sand blasting on the dried bare steel plate; and thermally spraying the steel plate, and remelting the coated steel plate by adopting a laser remelting or flame remelting method after the thermal spraying is finished. By carrying out the surface treatment before and after the spraying of the bare steel plate, the quality of the coating, such as uniformity and the like, can be ensured, the porosity of the coating is reduced, and the oxidation resistance and the corrosion resistance of the coating are improved. Furthermore, inert gas is adopted for protection when the bare steel plate is subjected to thermal spraying and the coated steel plate is subjected to remelting.
The preparation method of the coated steel plate has the following advantages:
1. the surface of the steel plate is provided with a high-temperature anti-oxidation coating, so that the steel plate has the capability of preventing oxidation in the heating process of hot stamping.
2. The bare steel plate is thermally sprayed after blanking, so that the waste material produced by the bare steel plate fed by the coiled material during blanking has no coating, thereby being convenient for recycling and saving resources.
3. The laser tailor welding is firstly carried out on the bare steel plate, and then the thermal spraying is carried out, so that the welding seam can be ensured to be formed on the bare steel plate and has enough strength; the bare steel plate is rolled and then thermally sprayed, so that the thickness of the coating on the rolled steel plate is uniform, and the application range of the coated steel plate is expanded.
The hot stamping method in the embodiment of the invention comprises the following steps:
blanking a bare steel plate to be processed according to the requirements of the shape, the size and the like of a formed product, wherein the specific blanking method can be cold stamping blanking or laser cutting blanking so as to adapt to bare steel plates with different materials and thicknesses;
carrying out surface treatment on the blanked bare steel plate to form a coated steel plate, wherein the thickness of the coating of the coated steel plate is preferably 20-50 μm; the surface treatment specifically comprises: deoiling the surface of the blanked bare steel plate; cleaning the deoiled bare steel plate; drying the cleaned bare steel plate; carrying out sand blasting on the dried bare steel plate; performing double-sided thermal spraying on the blasted bare steel plate by adopting a coating material to form a coated steel plate, wherein the specific thermal spraying method can be arc thermal spraying or flame spraying, and the specific coating material is a high-temperature anti-oxidation material, preferably an aluminum-silicon alloy, a ferrochrome alloy or stainless steel;
heating the coated steel plate after the surface treatment is finished, specifically, heating the coated steel plate to 930-980 ℃ by adopting an electromagnetic induction heating mode;
and stamping the heated coated steel plate.
By adopting the scheme, compared with the prior art, the hot stamping method has the following advantages:
1. between the two steps of blanking and heating the bare steel plate, the surface treatment steps of carrying out double-sided thermal spraying and the like on the bare steel plate by adopting a high-temperature anti-oxidation material are added to form a coated steel plate, and even if a layer of high-temperature anti-oxidation protective film is formed on the surface of the bare steel plate, the protective film can prevent the steel plate from generating oxidation reaction when being heated.
2. The bare steel plate is thermally sprayed after blanking, so that the waste material produced by the bare steel plate fed by the coiled material during blanking has no coating, thereby being convenient for recycling and saving resources.
Specifically, after the bare steel plate to be processed is blanked according to the forming requirement, a plurality of bare steel plates are subjected to laser tailor-welding, or a bare steel plate is rolled, and then the surface of the bare steel plate subjected to laser tailor-welding or rolling is treated. Sometimes, in order to meet the requirement that different parts of a hot stamping product have different thicknesses, a plurality of blanked steel plates need to be subjected to laser tailor-welding, or one blanked steel plate needs to be rolled, so that different parts of the steel plate have different thicknesses. Therefore, compared with the prior art that the steel plate with the Al-Si coating is adopted for hot stamping, the scheme has the following advantages:
1. in the laser tailor-welding process, the process of removing the coating of the steel plate with the Al-Si coating to expose the bare steel plate can be saved, and the working time and resources are saved;
2. in the rolling process, the surface of the bare steel plate is not coated, so that the problem of coating cracking caused by different rolling reduction rates is solved, the bare steel plate is subjected to spraying treatment after being rolled, the coated steel plate with uniform coating thickness can be obtained, and the application range of the coated steel plate is enlarged.
Specifically, when the bare steel plate after sand blasting is subjected to double-sided thermal spraying by adopting a high-temperature anti-oxidation material to form a coated steel plate, the adopted high-temperature anti-oxidation material is preferably ferrochromium or 410 stainless steel with the melting point of more than 1100 ℃, and the adopted high-temperature anti-oxidation material can be in a powder shape or a strip shape. By adopting the scheme, when the coated steel plate after surface treatment is heated, the high-temperature anti-oxidation material coating on the surface of the coated steel plate can protect the bare steel plate inside the coated steel plate from being oxidized; meanwhile, because the melting point of the high-temperature anti-oxidation material is more than 1100 ℃, the melting of the high-temperature anti-oxidation material coating is not needed to be worried about in the heating process of the traditional hot stamping steel plate, so compared with the traditional Al-Si coating, the high-temperature anti-oxidation material coating of the embodiment does not need to wait for the diffusion of Fe element into the high-temperature anti-oxidation material coating in the heating process, therefore, the high-temperature anti-oxidation material coated steel plate can be heated at the heating rate of 45-55 ℃/s, and the production efficiency is greatly improved; furthermore, the high-temperature anti-oxidation material coating cannot be melted in the heating process of the steel plate, and cannot be adhered to a rolling rod to cause the rolling rod to be nodulated, so that the service life of the rolling rod is prolonged.
Specifically, after the bare steel plate subjected to sand blasting is subjected to double-sided thermal spraying by adopting a high-temperature anti-oxidation material to form a coated steel plate, the coated steel plate subjected to thermal spraying is firstly remelted, and then the coated steel plate subjected to laser remelting is heated. The coating porosity of the remelted coating steel plate is greatly reduced, the oxidation resistance and the corrosion resistance of the coating can be improved, and the remelting method can be flame remelting or laser remelting. Furthermore, inert gas is adopted for protection when the bare steel plate is subjected to thermal spraying and the coated steel plate is subjected to remelting.
The preparation device of the coated steel plate comprises a blanking mechanism used for blanking the bare steel plate and a thermal spraying mechanism used for thermally spraying the blanked bare steel plate to form the coated steel plate. Preferably, the preparation device of the coated steel plate further comprises a laser tailor-welding mechanism for performing laser tailor-welding on the plurality of blanked bare steel plates; the rolling mechanism is used for rolling the blanked bare steel plate; an oil removing mechanism and a cleaning mechanism for cleaning the surface of the bare steel plate; the drying mechanism is used for drying the cleaned bare steel plate; a sand blasting mechanism for sand blasting the dried bare steel plate; and the remelting mechanism is used for remelting the hot-sprayed coated steel plate.
Example 1
Blanking a 22MnB5 bare steel plate with the thickness of 1.2mm by adopting a laser cutting blanking method to obtain the bare steel plate required by a hot stamping part;
sequentially carrying out oil removal, cleaning, drying and sand blasting treatment on the blanked 22MnB5 bare steel plate, and then carrying out double-sided thermal spraying on the 22MnB5 bare steel plate by adopting an electric arc thermal spraying method and a 410 stainless steel wire with the diameter of 2mm to form a 410 stainless steel coated steel plate; the technological parameters of the electric arc thermal spraying are as follows: the voltage is 36V, the working current is 260A, the moving speed is 10cm/s, the spraying angle is 60 degrees, the spraying distance is 350mm, and the air pressure is 7kg/cm2The thickness of the coating is 30-40 mu m; and carrying out laser remelting on the coated steel plate after the spraying is finished, wherein the laser remelting process parameters are as follows: the diameter of the circular light spot is 6mm, the focal length is 135mm, the defocusing amount is 20mm, the lap joint rate is 30%, the laser power is 1000W, and the scanning speed is 80 mm/s;
heating the 410 stainless steel coated steel plate to between 930 and 980 ℃ at the speed of 48 ℃/s;
the heated 410 stainless steel coated steel plate was pressed.
Example 2
Respectively blanking a 1.4mm 22MnB5 bare steel plate and a 1.2mm Q345 bare steel plate by adopting a laser cutting blanking method;
performing laser tailor-welding on the blanked 22MnB5 bare steel plate and the Q345 bare steel plate to obtain the bare steel plate required by the hot stamping part;
sequentially carrying out oil removal, cleaning, drying and sand blasting treatment on the laser tailor-welded bare steel plate, and then carrying out double-sided thermal spraying on the bare steel plate by adopting a flame spraying method and ferrochrome powder with the powder particle size of 10-20 mu m to form a ferrochrome coated steel plate; the flame spraying process parameters are as follows: the acetylene pressure of flame spraying is 0.1Mpa, the oxygen pressure is 0.4Mpa, the spraying distance is 300mm, the spraying angle is 18 degrees, the powder feeding amount is 80g/min, the moving speed is 15cm/s, the spraying is carried out twice, and the thickness of the coating is 15-25um each time; and carrying out laser remelting on the coated steel plate after the spraying is finished, wherein the laser remelting process parameters are as follows: the diameter of the circular light spot is 6mm, the focal length is 135mm, the defocusing amount is 20mm, the lap joint rate is 30%, the laser power is 1000W, and the scanning speed is 80 mm/s;
heating the ferrochrome coating steel plate to between 930 and 980 ℃ at the speed of 50 ℃/s;
and stamping the heated ferrochrome coated steel plate.
Example 3
Blanking the 22MnB5 bare steel plate by adopting a cold stamping blanking method;
rolling the blanked 22MnB5 bare steel plate to obtain a bare steel plate required by a hot stamping part;
sequentially carrying out oil removal, cleaning, drying and sand blasting treatment on the rolled 22MnB5 bare steel plate, and then carrying out double-sided thermal spraying on the 22MnB5 bare steel plate by adopting an electric arc thermal spraying method and an aluminum-silicon wire with the diameter of 2mm to form an aluminum-silicon coating steel plate; the technological parameters of the electric arc thermal spraying are as follows: the voltage is 36V, the working current is 255A, the moving speed is 12cm/s, the spraying angle is 60 degrees, the spraying distance is 300mm, and the air pressure is 6kg/cm2The thickness of the coating is 28-40 mu m; and carrying out laser remelting on the coated steel plate after the spraying is finished, wherein the laser remelting process parameters are as follows: the diameter of the circular light spot is 6mm, the focal length is 135mm, and the distance isThe coke amount is 20mm, the lap joint rate is 30%, the laser power is 1000W, and the scanning speed is 80 mm/s;
heating the aluminum-silicon coating steel plate to 930-980 ℃ at the speed of 7 ℃/s;
and stamping the heated ferrochrome coated steel plate.
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 (4)
1. A preparation method of a coated steel plate used for a hot stamping process is characterized by comprising the following steps:
blanking a bare steel plate to be processed according to requirements;
performing intermediate processing on the blanked bare steel plates, wherein the intermediate processing comprises performing laser tailor-welding on a plurality of blanked bare steel plates, or rolling the blanked bare steel plates so that different parts of the bare steel plates can have different thicknesses;
and thermally spraying the blanked bare steel plate by adopting a spraying material to form a coated steel plate, wherein the spraying material comprises ferrochrome alloy or stainless steel so that the coated steel plate can be heated to 930-980 ℃ at a heating rate of 45-55 ℃/s, remelting the thermally sprayed coated steel plate, and protecting by adopting inert gas when thermally spraying the bare steel plate and remelting the coated steel plate.
2. The method for producing a coated steel sheet according to claim 1, wherein in the step of blanking the bare steel sheet to be processed as required, the method of blanking includes cold stamping or laser cutting.
3. The method for manufacturing a coated steel sheet according to claim 1, wherein in the step of thermally spraying the blanked bare steel sheet with the spray material to form the coated steel sheet, before the step of thermally spraying the bare steel sheet, the method further comprises the steps of:
deoiling the surface of the bare steel plate;
cleaning the deoiled bare steel plate;
drying the cleaned bare steel plate;
and (4) carrying out sand blasting on the dried bare steel plate.
4. A hot stamping method, comprising the steps of:
the method of producing a coated steel sheet as claimed in any one of claims 1 to 3, wherein the coating material of the coated steel sheet is ferrochrome or stainless steel;
heating the coated steel plate to 930-980 ℃, wherein the heating rate of the coated steel plate is 45-55 ℃/s;
and stamping the heated coated steel plate.
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| CN111434404B (en) * | 2019-05-27 | 2022-03-25 | 苏州普热斯勒先进成型技术有限公司 | Method and device for manufacturing corrosion-resistant hot stamping part |
| CN111434405B (en) * | 2019-06-12 | 2021-10-15 | 苏州普热斯勒先进成型技术有限公司 | Preparation method and device of hot stamping part |
| CN111434443B (en) * | 2019-07-03 | 2022-02-22 | 苏州普热斯勒先进成型技术有限公司 | Method and device for manufacturing automobile structural part |
| CN111360156A (en) * | 2020-02-25 | 2020-07-03 | 东风天汽模（武汉）金属材料成型有限公司 | Laser tailor-welded blank, laser tailor-welded blank thermoformed part and preparation method thereof |
| CN111975293A (en) * | 2020-07-25 | 2020-11-24 | 上海爱焙乐铝箔包装有限公司 | Environment-friendly energy-saving high-temperature-resistant aluminum foil and preparation process thereof |
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| CN101619383B (en) * | 2009-08-05 | 2011-06-29 | 吉林诺亚机电科技有限公司 | Novel thermal forming method of high-strength steel plate stamping part |
| KR101448473B1 (en) * | 2012-12-03 | 2014-10-10 | 현대하이스코 주식회사 | Tailor welded blnk and hot stamping parts using the same |
| CN103212950A (en) * | 2013-04-24 | 2013-07-24 | 大连理工大学 | Technique of improving toughening and formability of automotive AHSS hot-stamping structural component |
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| KR101881893B1 (en) * | 2016-12-09 | 2018-07-26 | 주식회사 엠에스 오토텍 | Mefhod for manufacturing hot formed parts |
| CN206838845U (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 high-strength steel sheet heat stamping and shaping production line |
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