ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2022, Vol. 43 ›› Issue (4): 70-74.

Special Issue: 模具钢； 特种冶炼

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Development and Production of 4Cr5Mo2V Large Die Steel  640 mm x 1100 mm Forged Bloom for Automobile Die Casting

ZHOU Xu1,2, WANG Shijun1, YAN Lei1, DENG Li1,2, ZHANG Yongqiang1,2   

  1. 1 Daye special steel Co Ltd;
    2 Hubei Provice Key Laboratory of Hight Quality special steel, Huangshi 435001
  • Received:2022-02-10 Online:2022-08-01 Published:2022-08-21

汽车压铸用4Cr5Mo2V大型模具钢640 mm x 1100 mm 锻坯的研制

周许瑚1,2 ，王石军1 ,都磊1 ,邓力1,2,张永强1,2   

  1. 1大冶特殊钢有限公司;
    2高品质特殊钢湖北省重点实验室，黄石435001
  • 作者简介:周 许(1984-),男，工程师，硕士，河南科技大学,工模具钢产品工艺研究和产品开发。

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Abstract: By using combination teachnology of 20 t EAF-LF-VD, 20 t argon protection ESR unit remelting, 1 250 ~1 280 ℃ high temperature homogenization treatment, 60 MN oil pressure quick forging machine multiple forging and 1 000 〜1 050 ℃ high temperature solution treatment process, the inclusion(≤0.5 rating) , structure and lateral impact energy (KV2 25 〜31 J) of produced 640 mm x 1 100 mm 4Cr5Mo2V heavy die steel are higher than the requirement in standard NADCA#207-2018 for advanced steel leave,and the isotropy of steel reaches 0.95.

摘要： 大冶特钢采用20 t电弧炉+LF精炼+VD脱气、20 t氩气保护电渣炉重熔、1 250～1 280℃高温均质化处理、60MN油压快锻机多向锻造及1 000～1 050℃高温固溶组合技术,生产的640 mm×1 100 mm 4Cr5Mo2V大型模具钢的非金属夹杂物(≤0.5级)、显微组织、横向冲击功(KV2 25～31 J),均高于北美压铸协会NADCA#207-2018标准高级钢质量水平,等向性达到0.95。

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