CN101255488B - Quality optimization process for H13 steel vacuum thermal treatment - Google Patents
Quality optimization process for H13 steel vacuum thermal treatment Download PDFInfo
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- CN101255488B CN101255488B CN2007100377949A CN200710037794A CN101255488B CN 101255488 B CN101255488 B CN 101255488B CN 2007100377949 A CN2007100377949 A CN 2007100377949A CN 200710037794 A CN200710037794 A CN 200710037794A CN 101255488 B CN101255488 B CN 101255488B
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- steel vacuum
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Abstract
The invention discloses a quality optimizing process for vacuum heat treatment of H13 steel, comprising the steps of: heating and heat preserving, quenching and tempering. In the quenching process, the quenching medium is 5-10% brine, and the processing part is cooled in a quenching tank to room temperature and tempered. The process can effectively improve the quenching hardness and impact ductility of a H13 steel mould, so that the mould is more durable, the service life is extended. The process has considerable practical value and economical value.
Description
Technical field
The present invention relates to a kind of thermal treatment process, relate in particular to a kind of vacuum heat treatment process of H13 steel.
Background technology
High-pressure gas quenching furnace has been widely used in die casting thermal treatment.But present domestic main force's type of furnace of using is the air-quenching furnace of cooling pressure 6 crust, and little because of its speed of cooling, it is undesirable to be used for the forge die thermal effectiveness.External employing increases cooling pressure to 10 crust, 20 crust or uses strong cooling gas instead and improve gas quenching speed.This method cost is high, is difficult at present apply.Should study the novel method of the easy raising quenching cooling rate that is fit to our national conditions, to improve the impact toughness and the work-ing life of forge die.
We studied " H13 steel vacuum time-control quenching heat treatment technique " through controlled chilling speed time and adopt the method for different heat-eliminating mediums to improve on the basis of mold performance and applied for national inventing patent, patent No. ZL200610029825.1.We have done further research work again on this basis.
Summary of the invention
Technical problem to be solved by this invention provides a kind of special thermal treatment process can improve quenching attitude hardness, impelling strength and the work-ing life of H13 steel die effectively.
For solving the problems of the technologies described above H13 steel vacuum heat treatment quality optimization technology of the present invention; Comprise heat tracing, quenching, tempering; The quenchant that described quenching technology adopts is 5～10% salt solution, handles part and in quenching tank, is cooled to room temperature, temper then.
Gone out thermal treatment process of the present invention through a large amount of experience accumulation and Test Summaries; (100 * 100 * 100 millimeters on the sample that application the present invention handles; Material H13) with the comparing of vacuum high pressure gas quenching; The quenching attitude hardness value of sample is by having brought up to 60 ± 1HRC below the original 55HRC, and the impact toughness value of its tempering attitude also is enhanced about more than once; And compare with the time-control quenching technology of former first to file, the hardness MV of time-control quenching art breading part quenching attitude is 57.4HRC, this of this technology performance obviously increases, and the impact toughness value has also risen to 10.2J to 12.8J by the highest original 9.6J.Technology of the present invention has improved the quenching attitude hardness and the impelling strength of H13 steel die effectively; Make mould more durable, prolonged work-ing life.Have considerable practical value and economic worth.
Embodiment
Below in conjunction with specific embodiment the present invention is described further:
The sample that we select for use (100 * 100 * 100 millimeters, material H13), concrete thermal treatment process is following:
A. choose and handle the part shove charge;
B. be warming up to 600 ℃ with stove, insulation for some time; Be warmed up to 800 ℃ again, be incubated for some time again; Be warmed up to 1050 ℃ then, be incubated 100 minutes; Then sample is taken out in the stove and put into cool to room temperature in the brine media that contains 5%～10%NaCl;
C. be tempered in the claimed range at last.
Quenchant is chosen respectively and is contained NaCl5%, 7%, 8% and 10% salt solution, and the performance test of sample is following after the thermal treatment:
Quenching attitude hardness is respectively 59.1HRC, 59.8HRC, 60.9HRC and 60.2HRC; The impact toughness value is respectively 10.2J, 11.7J, 12.8J and 12.2J.
Claims (1)
1. a H13 steel vacuum heat treatment quality optimization technology comprises heat tracing, quenching, tempering, it is characterized in that comprising: handle part and be warming up to 600 ℃ with stove, insulation for some time; Be warmed up to 800 ℃ again, insulation for some time; Be warmed up to 1050 ℃ of insulations 100 minutes then, take out then and quench, the quenchant that quenching technology adopts is 5%～10% salt solution, handles part and in quenching tank, is cooled to room temperature, temper then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100377949A CN101255488B (en) | 2007-03-02 | 2007-03-02 | Quality optimization process for H13 steel vacuum thermal treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100377949A CN101255488B (en) | 2007-03-02 | 2007-03-02 | Quality optimization process for H13 steel vacuum thermal treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101255488A CN101255488A (en) | 2008-09-03 |
| CN101255488B true CN101255488B (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100377949A Expired - Fee Related CN101255488B (en) | 2007-03-02 | 2007-03-02 | Quality optimization process for H13 steel vacuum thermal treatment |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768659B (en) * | 2010-02-23 | 2011-04-20 | 河南神龙石油钻具有限公司 | Heat treatment technology of ultra-long mandrel |
| CN103114182A (en) * | 2011-11-16 | 2013-05-22 | 大亚科技股份有限公司 | Sprue bush heat treatment technology and sprue bush |
| CN102888495B (en) * | 2012-10-26 | 2014-12-31 | 国家电网公司 | Method for strengthening hot forging die of electric cabinet vent |
| CN103468896A (en) * | 2013-09-18 | 2013-12-25 | 上海市机械制造工艺研究所有限公司 | Vacuum quenching and cooling method of H13 steel |
| CN103484610B (en) * | 2013-09-23 | 2015-09-30 | 无锡阳工机械制造有限公司 | A kind of quenching method of H13 class steel |
| CN103484612B (en) * | 2013-09-23 | 2015-08-19 | 无锡阳工机械制造有限公司 | The quenching method of steel |
| CN105154893A (en) * | 2015-09-23 | 2015-12-16 | 宁波兴波机械有限公司 | Die heat treatment process for enhancing hardness of die |
-
2007
- 2007-03-02 CN CN2007100377949A patent/CN101255488B/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 不二越热处理研究所.第二章 淬火.《热处理须知》.机械工业出版社,1988,(第一版),26-68. * |
| 安正昆.第九章 淬火与回火 |
| 安正昆.第九章 淬火与回火;第十章 淬火应力与变形开裂.《钢铁热处理》.机械工业出版社,1985,(第一版),137-197. * |
| 第十章 淬火应力与变形开裂.《钢铁热处理》.机械工业出版社,1985,(第一版),137-197. |
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| CN101255488A (en) | 2008-09-03 |
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Granted publication date: 20120725 Termination date: 20180302 |