CN105986095A - Thermal-treatment method of automobile stamping die - Google Patents
Thermal-treatment method of automobile stamping die Download PDFInfo
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- CN105986095A CN105986095A CN201510046988.XA CN201510046988A CN105986095A CN 105986095 A CN105986095 A CN 105986095A CN 201510046988 A CN201510046988 A CN 201510046988A CN 105986095 A CN105986095 A CN 105986095A
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Abstract
The invention discloses a thermal-treatment method of an automobile stamping die. The method includes the steps of: 1) spheroidizing annealing: performing spheroidizing annealing to a processed die, wherein the temperature is quickly inductively increased to 920-950 DEG C at the rate of 5-15 DEG C/s, and annealing time is 13-16 h; 2) air cooling: air-cooling the annealed die to room temperature; 3) two-stage quenching: performing two-stage quenching to the air-cooled die, wherein first-stage quenching includes an operation of quenching the die in oil at 850-950 DEG C for 4-7 h, and second-stage quenching includes an operation of quenching the die in oil at 1300 DEG C for 3-4 h; 4) two-stage tempering, wherein primary tempering is carried out at 350 DEG C for 5 h and secondary tempering is carried out at 300 DEG C for 5 h, and 5) destressing treatment. The thermal-treatment method enables surface quality of the die to be good, reduces rejection rate of auto body, prolongs service life of the die and satisfies demand in actual production.
Description
Technical field
The present invention relates to a kind of heat treatment method, be specifically related to the heat treatment method of a kind of Press Tools for Automobiles.
Background technology
Cold punching die mostly is and is arranged on forcing press, at room temperature applies deformation force to being placed on interior plate so that it is be deformed, thus obtains definite shape, the special specific purpose tool of the product parts of size and performance.In order to improve the wearability of mold working surface, hardness and corrosion resistance, it is necessary to use heat, list processing technique.
For body of a motor car, in addition to a part of standard component, almost all is welded by sheet-metal press working part.Owing to Auto-body Panel major part is to have effigurate profiled member, and there are many drawn component belonging to complex space shape, therefore diel is the guarantee of body quality.The vehicle body scrappage that existing car body die processes is high, and die surface is of poor quality, and die life deficiency is difficult to meet needs of production.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is the heat treatment method of a kind of Press Tools for Automobiles, after mould uses the inventive method heat treatment, die surface quality is good, vehicle body scrappage is low, and improves die life, meets needs of production.
For achieving the above object, the invention provides the heat treatment method of a kind of Press Tools for Automobiles, comprise the steps 1) spheroidizing: the mould processed being carried out spheroidizing process, quickly senses through 5-15 DEG C/s and be heated to 920-950 DEG C, annealing time is 13-16 hour；
2) air cooling: by the mould air cooling after annealing to room temperature；
3) secondary grading quenching: the mould after above-mentioned air cooling carries out secondary grading quenching, scalping quenches: quenching dipped in oil for mould, temperature is 850-950 DEG C, and the time is 4-7 hour；Secondary grading quenches: quenching dipped in oil for mould, temperature is 1300 DEG C, and the time is 3-4 hour；
4) second annealing: one-level is tempered: temperature is 350 DEG C, and tempering time is 5 hours；Second annealing: temperature is 300 DEG C, tempering time is 5 hours；
5) destressing processes.
The invention has the beneficial effects as follows: after using the inventive method heat treatment, die surface quality is good, and vehicle body scrappage is low, and improves die life, meets needs of production.
Detailed description of the invention
The technical scheme is that the heat treatment method of a kind of Press Tools for Automobiles, it is characterised in that comprise the following steps:
1) spheroidizing: the mould processed is carried out spheroidizing process, quickly senses through 15 DEG C/s and is heated to 950 DEG C, and annealing time is 16 hours；
2) air cooling: by the mould air cooling after annealing to room temperature；
3) secondary grading quenching: the mould after above-mentioned air cooling carries out secondary grading quenching, scalping quenches: quenching dipped in oil for mould, temperature is 900 DEG C, and the time is 7 hours；Secondary grading quenches: quenching dipped in oil for mould, temperature is 1300 DEG C, and the time is 4 hours；
4) second annealing: one-level is tempered: temperature is 350 DEG C, and tempering time is 5 hours；Second annealing: temperature is 300 DEG C, tempering time is 5 hours；
5) destressing processes.
Claims (1)
1. the heat treatment method of a Press Tools for Automobiles, it is characterised in that comprise the following steps:
1) spheroidizing: the mould processed is carried out spheroidizing process, quickly senses through 5-15 DEG C/s and is heated to 920-950 DEG C, and annealing time is 13-16 hour；
2) air cooling: by the mould air cooling after annealing to room temperature；
3) secondary grading quenching: the mould after above-mentioned air cooling carries out secondary grading quenching, scalping quenches: quenching dipped in oil for mould, temperature is 850-950 DEG C, and the time is 4-7 hour；Secondary grading quenches: quenching dipped in oil for mould, temperature is 1300 DEG C, and the time is 3-4 hour；
4) second annealing: one-level is tempered: temperature is 350 DEG C, and tempering time is 5 hours；Second annealing: temperature is 300 DEG C, tempering time is 5 hours；
5) destressing processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046988.XA CN105986095A (en) | 2015-01-30 | 2015-01-30 | Thermal-treatment method of automobile stamping die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046988.XA CN105986095A (en) | 2015-01-30 | 2015-01-30 | Thermal-treatment method of automobile stamping die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105986095A true CN105986095A (en) | 2016-10-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510046988.XA Pending CN105986095A (en) | 2015-01-30 | 2015-01-30 | Thermal-treatment method of automobile stamping die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105986095A (en) |
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2015
- 2015-01-30 CN CN201510046988.XA patent/CN105986095A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
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| WD01 | Invention patent application deemed withdrawn after publication |