CN111451397A - Machining method and preparation method of automobile stamping part die - Google Patents
Machining method and preparation method of automobile stamping part die Download PDFInfo
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- CN111451397A CN111451397A CN202010133835.XA CN202010133835A CN111451397A CN 111451397 A CN111451397 A CN 111451397A CN 202010133835 A CN202010133835 A CN 202010133835A CN 111451397 A CN111451397 A CN 111451397A
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/01—Selection of materials
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- 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
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- 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
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- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Abstract
The invention belongs to the relevant field of automobile stamping part dies, and particularly discloses a processing method of an automobile stamping part die, which comprises the following steps: smelting an electrode blank; removing impurities; manufacturing a model embryo; reprocessing the model embryo; manufacturing a mould; and (5) reprocessing the mould. The invention adopts double cooling technology to carry out annealing treatment, avoids the structure damage caused by excessive cooling at one time, increases the durability of the stamping die, introduces microelements such as Se, Zn, Co, W and the like into the original stamping die, and leads the die to have extremely high purity and density, extremely fine and uniform tissue, high hardness, excellent thermal wear resistance, thermal shock resistance, thermal crack resistance and thermal stability by relatively optimizing the alloy proportion, thereby meeting the requirements of large-batch high-performance automobile stamping parts with complex shape and structure and high surface quality requirements, and having wide market prospect.
Description
Technical Field
The invention relates to the related field of automobile stamping part dies, in particular to a processing method and a preparation method of an automobile stamping part die.
Background
The die is basic process equipment for mass production of industrial products, 70% of rough machining and 5% of finish machining of mechanical manufacturing industrial parts are completed by the die. The plastic die steel is an important die material and is widely applied to various industries such as household appliances, electronic and communication equipment, plastic products, automobiles, motorcycles and the like.
One first presents the body of a car in front of a car. That is to say the body is the identifying assembly of the car. The body represents the visual characteristic of that type of automobile. The automobile die is a generic term of dies for punching all stampings on an automobile body in a narrow sense. Namely an automobile body stamping die. Such as roof flanging dies, beam stiffener compression dies, and the like. The most important component of the automobile mould is a covering part mould. Such molds are mainly cold stamping dies. The term "automobile mold" in the broad sense is a generic term for molds used to manufacture all parts of automobiles. For example, a press mold, an injection mold, a forging mold, a casting wax mold, a glass mold, and the like. Stampings on automobile bodies are largely divided into panels, beam members and general stampings. The stamping capable of obviously representing the characteristics of the automobile image is an automobile covering part. Therefore, the more specific automobile mold can be called as an automobile panel stamping mold. The stamping die for the automobile covering parts is shortened. For example, a front door outer panel trim die, a front door inner panel punching die, and the like.
The quality of the automobile stamping parts is directly related to the level of a die, the level of the die is required to be improved, the material of the die is a key, the die fails too early due to improper material selection and use, and the die accounts for more than 45 percent of the failed die, most of the automobile stamping part dies sold and circulated in the market at present have the factors of insufficient optimization of alloy component proportion, insufficient fineness of smelting, low purity, no fine and micro treatment of structures and the like, so that the performances of high-temperature resistance, wear resistance, hot cracking resistance, plastic deformation resistance, integral cracking resistance and the like of the hot automobile stamping parts are poor, the final service life of the die is short and unstable, and the requirements of high-performance automobile stamping parts with large batch of products, complex shape structure and high surface quality requirements can not be met more and more.
The above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.
Disclosure of Invention
The invention aims to provide a processing method and a preparation method of an automobile stamping part die, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a processing method of an automobile stamping part die comprises the following processing methods:
smelting an electrode blank: smelting iron ore into pig iron in an iron-making furnace, adding a certain raw material proportion into the pig iron to cast into a steel ingot or a continuous casting blank, cooling the steel ingot or the continuous casting blank, and then annealing and stress relieving at 855-880 ℃ and 800-815 ℃ respectively to obtain an electrode blank by smelting;
removing impurities: placing the smelted electrode blank in an electroslag remelting furnace, casting or forging the electrode blank into an electrode, remelting the electrode blank for the second time through resistance heat of slag to obtain an electroslag ingot, and annealing the electroslag ingot at 855-880 ℃ and 800-815 ℃ respectively;
making a model embryo: placing the annealed electroslag ingot into a high-frequency induction smelting furnace, heating to 1450-;
reprocessing of model embryos: placing the model embryo into a vacuum furnace, heating to 1450-;
manufacturing a mould: carrying out oxidation treatment on the model embryo subjected to spheroidizing annealing treatment, and processing to obtain an automobile stamping part die;
and (3) reprocessing the mould: quenching the processed automobile stamping part die, treating the surface of the die by using mixed alkali liquor prepared from sodium carbonate, trisodium phosphate and water, cleaning the surface of the die by using soap water, washing the surface of the die for 4-7 times by using clean water, cooling, and drying in an oven at 55-65 ℃ to obtain a finished product.
Preferably, the iron ore is reduced and melted in a blast furnace to pig iron.
Preferably, the raw materials comprise the following raw materials in percentage by weight: c: 0.22-0.32%; si: 0.55-0.75%; mn: 0.58-0.68%; mo: 0.55-0.75%; v: 0.65-0.75%; 0.15 to 0.25 percent of Se; zn: 0.05-0.15%; co: 0.30-0.40%; w: 0.01-0.04%; sr: 0.10-0.20%; the balance being Fe.
Preferably, the raw materials comprise the following raw materials in percentage by weight: c: 0.27 percent; si: 0.65 percent; mn: 0.63%; mo: 0.65 percent; v: 0.70 percent; 0.20 percent of Se; zn: 0.10 percent; co: 0.35 percent; w: 0.025 percent; sr: 0.15 percent; the balance being Fe.
Preferably, in the steps of smelting the electrode blank, removing impurities and manufacturing the model embryo, annealing treatment is carried out at 867 ℃ and 807 ℃.
Preferably, in the step of mold reprocessing, the offline mold is heated by acetylene-oxygen flame, the surface temperature of the mold reaches the quenching temperature, surface quenching treatment is performed for 3 times, the first treatment time is 5-7 seconds, the surface temperature of the mold is rapidly reduced by 360-.
Preferably, in the step of mold reprocessing, the mold is cooled by a circulating spray method, the treatment time is 6-8 minutes, the treatment temperature is 60-70 ℃, and the circulating treatment is carried out twice.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts double cooling technology to carry out annealing treatment, avoids the structure damage caused by excessive cooling at one time, increases the durability of the stamping die, introduces microelements such as Se, Zn, Co, W and the like into the original stamping die, and leads the die to have extremely high purity and density, extremely fine and uniform tissue, high hardness, excellent thermal wear resistance, thermal shock resistance, thermal crack resistance and thermal stability by relatively optimizing the alloy proportion, thereby meeting the requirements of large-batch high-performance automobile stamping parts with complex shape and structure and high surface quality requirements, and having wide market prospect.
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.
Example one
The invention provides a technical scheme that: a processing method of an automobile stamping part die comprises the following processing methods:
smelting an electrode blank: smelting iron ore into pig iron in an iron-making furnace, adding a certain raw material proportion into the pig iron to cast into a steel ingot or a continuous casting blank, cooling the steel ingot or the continuous casting blank, and then annealing and stress relieving at 855-880 ℃ and 800-815 ℃ respectively to obtain an electrode blank by smelting;
removing impurities: placing the smelted electrode blank in an electroslag remelting furnace, casting or forging the electrode blank into an electrode, remelting the electrode blank for the second time through resistance heat of slag to obtain an electroslag ingot, and annealing the electroslag ingot at 855-880 ℃ and 800-815 ℃ respectively;
making a model embryo: placing the annealed electroslag ingot into a high-frequency induction smelting furnace, heating to 1450-;
reprocessing of model embryos: placing the model embryo into a vacuum furnace, heating to 1450-;
manufacturing a mould: carrying out oxidation treatment on the model embryo subjected to spheroidizing annealing treatment, and processing to obtain an automobile stamping part die;
and (3) reprocessing the mould: quenching the processed automobile stamping part die, treating the surface of the die by using mixed alkali liquor prepared from sodium carbonate, trisodium phosphate and water, cleaning the surface of the die by using soap water, washing the surface of the die for 4-7 times by using clean water, cooling, and drying in an oven at 55-65 ℃ to obtain a finished product.
Further, the iron ore is reduced and melted in a blast furnace to be pig iron.
Further, the raw materials comprise the following raw materials in percentage by weight: c: 0.22-0.32%; si: 0.55-0.75%; mn: 0.58-0.68%; mo: 0.55-0.75%; v: 0.65-0.75%; 0.15 to 0.25 percent of Se; zn: 0.05-0.15%; co: 0.30-0.40%; w: 0.01-0.04%; sr: 0.10-0.20%; the balance being Fe.
Further, the raw materials comprise the following raw materials in percentage by weight: c: 0.22 percent; si: 0.55 percent; mn: 0.58 percent; mo: 0.55 percent; v: 0.65 percent; 0.15 percent of Se; zn: 0.05 percent; co: 0.30 percent; w: 0.01 percent; sr: 0.10 percent; the balance being Fe.
Further, in the steps of smelting an electrode blank, removing impurities and manufacturing a model embryo, annealing treatment is carried out at 867 ℃ and 807 ℃.
Further, in the step of mold reprocessing, the off-line mold is heated by acetylene-oxygen flame, the surface temperature of the mold reaches the quenching temperature, surface quenching treatment is carried out for 3 times, the first treatment time is 5-7 seconds, the surface temperature of the mold is rapidly reduced by 360-fold glass-cement temperature, the temperature is maintained in a box-type heating furnace, the temperature in the box is set to be 560-fold glass-cement temperature 600 ℃, the temperature maintaining time is 20-28 minutes, and the mold is taken out and sprayed with water to be cooled to the room temperature.
Further, in the step of mold reprocessing, a circulating spray method is adopted for cooling, the processing time is 6-8 minutes, the processing temperature is 60-70 ℃, and the circulating processing is carried out twice.
Example two
The invention provides a technical scheme that: a processing method of an automobile stamping part die comprises the following processing methods:
smelting an electrode blank: smelting iron ore into pig iron in an iron-making furnace, adding a certain raw material proportion into the pig iron to cast into a steel ingot or a continuous casting blank, cooling the steel ingot or the continuous casting blank, and then annealing and stress relieving at 855-880 ℃ and 800-815 ℃ respectively to obtain an electrode blank by smelting;
removing impurities: placing the smelted electrode blank in an electroslag remelting furnace, casting or forging the electrode blank into an electrode, remelting the electrode blank for the second time through resistance heat of slag to obtain an electroslag ingot, and annealing the electroslag ingot at 855-880 ℃ and 800-815 ℃ respectively;
making a model embryo: placing the annealed electroslag ingot into a high-frequency induction smelting furnace, heating to 1450-;
reprocessing of model embryos: placing the model embryo into a vacuum furnace, heating to 1450-;
manufacturing a mould: carrying out oxidation treatment on the model embryo subjected to spheroidizing annealing treatment, and processing to obtain an automobile stamping part die;
and (3) reprocessing the mould: quenching the processed automobile stamping part die, treating the surface of the die by using mixed alkali liquor prepared from sodium carbonate, trisodium phosphate and water, cleaning the surface of the die by using soap water, washing the surface of the die for 4-7 times by using clean water, cooling, and drying in an oven at 55-65 ℃ to obtain a finished product.
Further, the iron ore is reduced and melted in a blast furnace to be pig iron.
Further, the raw materials comprise the following raw materials in percentage by weight: c: 0.22-0.32%; si: 0.55-0.75%; mn: 0.58-0.68%; mo: 0.55-0.75%; v: 0.65-0.75%; 0.15 to 0.25 percent of Se; zn: 0.05-0.15%; co: 0.30-0.40%; w: 0.01-0.04%; sr: 0.10-0.20%; the balance being Fe.
Further, the raw materials comprise the following raw materials in percentage by weight: c: 0.32 percent; si: 0.75 percent; mn: 0.68 percent; mo: 0.75 percent; v: 0.75 percent; 0.25 percent of Se; zn: 0.15 percent; co: 0.40 percent; w: 0.04 percent; sr: 0.20 percent; the balance being Fe.
Further, in the steps of smelting an electrode blank, removing impurities and manufacturing a model embryo, annealing treatment is carried out at 867 ℃ and 807 ℃.
Further, in the step of mold reprocessing, the off-line mold is heated by acetylene-oxygen flame, the surface temperature of the mold reaches the quenching temperature, surface quenching treatment is carried out for 3 times, the first treatment time is 5-7 seconds, the surface temperature of the mold is rapidly reduced by 360-fold glass-cement temperature, the temperature is maintained in a box-type heating furnace, the temperature in the box is set to be 560-fold glass-cement temperature 600 ℃, the temperature maintaining time is 20-28 minutes, and the mold is taken out and sprayed with water to be cooled to the room temperature.
Further, in the step of mold reprocessing, a circulating spray method is adopted for cooling, the processing time is 6-8 minutes, the processing temperature is 60-70 ℃, and the circulating processing is carried out twice.
EXAMPLE III
The invention provides a technical scheme that: a processing method of an automobile stamping part die comprises the following processing methods:
smelting an electrode blank: smelting iron ore into pig iron in an iron-making furnace, adding a certain raw material proportion into the pig iron to cast into a steel ingot or a continuous casting blank, cooling the steel ingot or the continuous casting blank, and then annealing and stress relieving at 855-880 ℃ and 800-815 ℃ respectively to obtain an electrode blank by smelting;
removing impurities: placing the smelted electrode blank in an electroslag remelting furnace, casting or forging the electrode blank into an electrode, remelting the electrode blank for the second time through resistance heat of slag to obtain an electroslag ingot, and annealing the electroslag ingot at 855-880 ℃ and 800-815 ℃ respectively;
making a model embryo: placing the annealed electroslag ingot into a high-frequency induction smelting furnace, heating to 1450-;
reprocessing of model embryos: placing the model embryo into a vacuum furnace, heating to 1450-;
manufacturing a mould: carrying out oxidation treatment on the model embryo subjected to spheroidizing annealing treatment, and processing to obtain an automobile stamping part die;
and (3) reprocessing the mould: quenching the processed automobile stamping part die, treating the surface of the die by using mixed alkali liquor prepared from sodium carbonate, trisodium phosphate and water, cleaning the surface of the die by using soap water, washing the surface of the die for 4-7 times by using clean water, cooling, and drying in an oven at 55-65 ℃ to obtain a finished product.
Further, the iron ore is reduced and melted in a blast furnace to be pig iron.
Further, the raw materials comprise the following raw materials in percentage by weight: c: 0.22-0.32%; si: 0.55-0.75%; mn: 0.58-0.68%; mo: 0.55-0.75%; v: 0.65-0.75%; 0.15 to 0.25 percent of Se; zn: 0.05-0.15%; co: 0.30-0.40%; w: 0.01-0.04%; sr: 0.10-0.20%; the balance being Fe.
Further, the raw materials comprise the following raw materials in percentage by weight: c: 0.27 percent; si: 0.65 percent; mn: 0.63%; mo: 0.65 percent; v: 0.70 percent; 0.20 percent of Se; zn: 0.10 percent; co: 0.35 percent; w: 0.025 percent; sr: 0.15 percent; the balance being Fe.
Further, in the steps of smelting an electrode blank, removing impurities and manufacturing a model embryo, annealing treatment is carried out at 867 ℃ and 807 ℃.
Further, in the step of mold reprocessing, the off-line mold is heated by acetylene-oxygen flame, the surface temperature of the mold reaches the quenching temperature, surface quenching treatment is carried out for 3 times, the first treatment time is 5-7 seconds, the surface temperature of the mold is rapidly reduced by 360-fold glass-cement temperature, the temperature is maintained in a box-type heating furnace, the temperature in the box is set to be 560-fold glass-cement temperature 600 ℃, the temperature maintaining time is 20-28 minutes, and the mold is taken out and sprayed with water to be cooled to the room temperature.
Further, in the step of mold reprocessing, a circulating spray method is adopted for cooling, the processing time is 6-8 minutes, the processing temperature is 60-70 ℃, and the circulating processing is carried out twice.
The invention adopts double cooling technology to carry out annealing treatment, avoids the structure damage caused by excessive cooling at one time, increases the durability of the stamping die, introduces microelements such as Se, Zn, Co, W and the like into the original stamping die, and leads the die to have extremely high purity and density, extremely fine and uniform tissue, high hardness, excellent thermal wear resistance, thermal shock resistance, thermal crack resistance and thermal stability by relatively optimizing the alloy proportion, thereby meeting the requirements of large-batch high-performance automobile stamping parts with complex shape and structure and high surface quality requirements, and having wide market prospect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative examples and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any icons in the claims should not be construed as limiting the claim concerned.
Claims (7)
1. The machining method of the automobile stamping part die is characterized by comprising the following steps of: the processing method comprises the following steps:
smelting an electrode blank: smelting iron ore into pig iron in an iron-making furnace, adding a certain raw material proportion into the pig iron to cast into a steel ingot or a continuous casting blank, cooling the steel ingot or the continuous casting blank, and then annealing and stress relieving at 855-880 ℃ and 800-815 ℃ respectively to obtain an electrode blank by smelting;
removing impurities: placing the smelted electrode blank in an electroslag remelting furnace, casting or forging the electrode blank into an electrode, remelting the electrode blank for the second time through resistance heat of slag to obtain an electroslag ingot, and annealing the electroslag ingot at 855-880 ℃ and 800-815 ℃ respectively;
making a model embryo: placing the annealed electroslag ingot into a high-frequency induction smelting furnace, heating to 1450-;
reprocessing of model embryos: placing the model embryo into a vacuum furnace, heating to 1450-;
manufacturing a mould: carrying out oxidation treatment on the model embryo subjected to spheroidizing annealing treatment, and processing to obtain an automobile stamping part die;
and (3) reprocessing the mould: quenching the processed automobile stamping part die, treating the surface of the die by using mixed alkali liquor prepared from sodium carbonate, trisodium phosphate and water, cleaning the surface of the die by using soap water, washing the surface of the die for 4-7 times by using clean water, cooling, and drying in an oven at 55-65 ℃ to obtain a finished product.
2. The method for machining the automobile stamping die according to claim 1, wherein the method comprises the following steps: the iron ore is reduced and melted in a blast furnace to be pig iron.
3. The method for machining the automobile stamping die according to claim 1, wherein the method comprises the following steps: the raw materials comprise the following raw materials in percentage by weight: c: 0.22-0.32%; si: 0.55-0.75%; mn: 0.58-0.68%; mo: 0.55-0.75%; v: 0.65-0.75%; 0.15 to 0.25 percent of Se; zn: 0.05-0.15%; co: 0.30-0.40%; w: 0.01-0.04%; sr: 0.10-0.20%; the balance being Fe.
4. The method for machining the automobile stamping die according to claim 1, wherein the method comprises the following steps: the raw materials comprise the following raw materials in percentage by weight: c: 0.27 percent; si: 0.65 percent; mn: 0.63%; mo: 0.65 percent; v: 0.70 percent; 0.20 percent of Se; zn: 0.10 percent; co: 0.35 percent; w: 0.025 percent; sr: 0.15 percent; the balance being Fe.
5. The method for machining the automobile stamping die according to claim 1, wherein the method comprises the following steps: in the steps of smelting the electrode blank, removing impurities and manufacturing the model embryo, annealing treatment is carried out at 867 ℃ and 807 ℃.
6. The method for machining the automobile stamping die according to claim 1, wherein the method comprises the following steps: in the step of mold reprocessing, the off-line mold is heated by acetylene-oxygen flame, the surface temperature of the mold reaches the quenching temperature for 3 times of surface quenching treatment, the first treatment time is 5-7 seconds, the surface temperature of the mold is rapidly reduced by 360-fold glass-cement 380 ℃, the temperature is kept in a box-type heating furnace, the temperature in the box is set to be 560-fold glass-cement 600 ℃, the heat preservation time is 20-28 minutes, and the mold is taken out and sprayed with water to be cooled to the room temperature.
7. The method for machining the automobile stamping die according to claim 1, wherein the method comprises the following steps: in the step of reprocessing the mould, a circulating spraying method is adopted for cooling, the treatment time is 6-8 minutes, the treatment temperature is 60-70 ℃, and the circulating treatment is carried out twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133835.XA CN111451397A (en) | 2020-03-02 | 2020-03-02 | Machining method and preparation method of automobile stamping part die |
Applications Claiming Priority (1)
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069523A (en) * | 1991-08-13 | 1993-03-03 | 包头钢铁学院 | Annealing technology for relieving stress from alloyed steel ingot |
| CN106854738A (en) * | 2015-12-08 | 2017-06-16 | 重庆葛利兹模具技术有限公司上海分公司 | A kind of easy cutting plastic mold steel and its heat treatment method |
| WO2017109233A1 (en) * | 2015-12-24 | 2017-06-29 | Rovalma, S.A | Long durability high performance steel for structural, machine and tooling applications |
| CN107460279A (en) * | 2017-08-23 | 2017-12-12 | 安徽东星汽车部件有限公司 | A kind of surface treatment method of stamping parts of automobile mould |
| CN108300842A (en) * | 2018-03-28 | 2018-07-20 | 共享铸钢有限公司 | The method for annealing of steel-casting crack resistence |
| CN108385021A (en) * | 2018-03-07 | 2018-08-10 | 重庆文理学院 | Corrosion resistant novel die-casting die steel of one kind and preparation method thereof |
| CN109468537A (en) * | 2018-12-25 | 2019-03-15 | 上海合毓模具技术有限公司 | A kind of novel advanced hot stamping die steel HS8 and preparation method thereof |
| CN110229997A (en) * | 2019-06-02 | 2019-09-13 | 青岛东盛高科模塑技术有限公司 | A kind of plastic steel plate for die and its processing method |
| CN110284045A (en) * | 2019-06-02 | 2019-09-27 | 天鑫精工科技(威海)有限公司 | A kind of processing method of stamping parts of automobile mold |
| CN110284044A (en) * | 2019-06-02 | 2019-09-27 | 天鑫精工科技(威海)有限公司 | A kind of hot stamping die and its processing method |
| CN110423944A (en) * | 2019-08-20 | 2019-11-08 | 海盐九宏五金模具制造有限公司 | A kind of high molybdenum system wear-resistant mould steel |
| CN110512138A (en) * | 2019-06-02 | 2019-11-29 | 青岛东盛高科模塑技术有限公司 | A kind of hot stamping die alloy material and preparation method thereof |
-
2020
- 2020-03-02 CN CN202010133835.XA patent/CN111451397A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069523A (en) * | 1991-08-13 | 1993-03-03 | 包头钢铁学院 | Annealing technology for relieving stress from alloyed steel ingot |
| CN106854738A (en) * | 2015-12-08 | 2017-06-16 | 重庆葛利兹模具技术有限公司上海分公司 | A kind of easy cutting plastic mold steel and its heat treatment method |
| WO2017109233A1 (en) * | 2015-12-24 | 2017-06-29 | Rovalma, S.A | Long durability high performance steel for structural, machine and tooling applications |
| CN107460279A (en) * | 2017-08-23 | 2017-12-12 | 安徽东星汽车部件有限公司 | A kind of surface treatment method of stamping parts of automobile mould |
| CN108385021A (en) * | 2018-03-07 | 2018-08-10 | 重庆文理学院 | Corrosion resistant novel die-casting die steel of one kind and preparation method thereof |
| CN108300842A (en) * | 2018-03-28 | 2018-07-20 | 共享铸钢有限公司 | The method for annealing of steel-casting crack resistence |
| CN109468537A (en) * | 2018-12-25 | 2019-03-15 | 上海合毓模具技术有限公司 | A kind of novel advanced hot stamping die steel HS8 and preparation method thereof |
| CN110229997A (en) * | 2019-06-02 | 2019-09-13 | 青岛东盛高科模塑技术有限公司 | A kind of plastic steel plate for die and its processing method |
| CN110284045A (en) * | 2019-06-02 | 2019-09-27 | 天鑫精工科技(威海)有限公司 | A kind of processing method of stamping parts of automobile mold |
| CN110284044A (en) * | 2019-06-02 | 2019-09-27 | 天鑫精工科技(威海)有限公司 | A kind of hot stamping die and its processing method |
| CN110512138A (en) * | 2019-06-02 | 2019-11-29 | 青岛东盛高科模塑技术有限公司 | A kind of hot stamping die alloy material and preparation method thereof |
| CN110423944A (en) * | 2019-08-20 | 2019-11-08 | 海盐九宏五金模具制造有限公司 | A kind of high molybdenum system wear-resistant mould steel |
Non-Patent Citations (2)
| Title |
|---|
| 李凤臣: "《钢结构设计原理》", 31 August 2013, 华南理工大学出版社 * |
| 李永志等: "《模具材料及表面处理》", 31 March 2015, 中国海洋大学出版社 * |
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