Development of Heavy Plate of Pre-hardened Plastic Die Steel 718

王生朝; 孙斌

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Development of Heavy Plate of Pre-hardened Plastic Die Steel 718

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- Development of Heavy Plate of Pre-hardened Plastic Die Steel 718
- Special Steel Vol. 31, Issue 5, Pages: 49-50(2010)
- 作者机构：
  
  湖南工业大学冶金工程学院,株洲,412000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：19 May 2010，
  
  Online First：11 November 2022，
  
  Published：11 November 2010
- 稿件说明：
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王生朝, 孙斌. Development of Heavy Plate of Pre-hardened Plastic Die Steel 718[J]. Special Steel, 2010, 31(5): 49-50.
DOI：

王生朝, 孙斌. Development of Heavy Plate of Pre-hardened Plastic Die Steel 718[J]. Special Steel, 2010, 31(5): 49-50. DOI：

摘要

开发的模具钢718(%:0.32～0.40C、0.30～0.50Si、1.00～1.50Mn、≤0.016P、≤0.005S、1.50～2.00Cr、0.40～0.50Mo、0.80～1.20Ni、0.020～0.045Al)198～308 mm厚板的生产工艺流程为90～100 t EAF-LFVD-40 t电渣重熔(950 mm×2 000 mm板坯)-轧制(控冷)-热处理。检验结果表明

钢中的P为0.009%～0.012%

S为0.001%～0.003%

钢中气体含量为(45～60)×10

-6

]

1.5×10

-6

]

(13～18)×10

-6

]

;钢板平均HB值为317～352

其组织为回火贝氏体+少量回火索氏体

满足各类模具的加工和表面质量要求。

Abstract

The production process flow sheet for 198 〜308 mm heavy plate of developed die steel 718 ( % : 0.32〜0.40C

0.30~0.50Si

1.00~1.50Mn

≤0.016P

≤0.005S

1.50~2.00Cr

0.40-0.50Mo

0.80~1.20Ni

0.020-0.045Al) is 90 ~ 100 t EAF-LF-VD-40 t ESR (950 mm x 2 000 mm slab) -rolling (control cooling) -heat treatment. Examination results show that the P content in steel is 0.009%~0.012%

the S content is 0.001%~0.003%

and the gases contents are (45~60) x 10

-6

]

1.5 x 10

-6

[ H

]

and (13~18) x 10

-6

]

； the average value of HB hardness is 317~352 with structure of tempered bainite + minor tempered sorbite to meet the requirement of workability and surface quality for various dies.

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