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基本信息:
- 专利标题: 一种重型柴油发动机蠕墨铸铁缸盖材料及其制备工艺
- 申请号:CN201811242434.7 申请日:2018-10-24
- 公开(公告)号:CN109338207B 公开(公告)日:2020-06-05
- 发明人: 袁福安 , 康明 , 王林 , 涂欣达 , 霍卯田 , 金通 , 曹宇峰
- 申请人: 东风商用车有限公司
- 申请人地址: 湖北省武汉市汉阳区武汉经济技术开发区东风大道10号
- 专利权人: 东风商用车有限公司
- 当前专利权人: 东风商用车有限公司
- 当前专利权人地址: 湖北省武汉市汉阳区武汉经济技术开发区东风大道10号
- 代理机构: 武汉市首臻知识产权代理有限公司
- 代理人: 高琴
- 主分类号: C22C37/10
- IPC分类号: C22C37/10 ; C22C37/06 ; C22C33/10
A vermicular graphite cast iron cylinder cover material of a heavy-duty diesel oil engine comprises the following raw materials in percentage by weight: 3.60-3.90% of C, 1.90-2.50% of Si, 0.50-0.70% of Mn, 0.4-0.6% of Mo, 0.70-0.85% of Cu, 0.2-0.4% of Cr, 0.01-0.025% of Mg, 0.025-0.04% of Re, not greater than 0.070% of P, not greater than 0.015% of S, and the balance Fe and inevitable impurities.A preparation technology comprises the steps of pressing from the bottom of a ladle and nucleating by a ladle bottom pouring method; supplementing a nucleating agent while 78-85% of molten iron is output; and then nucleating along with stream. According to the preparation technology adopting the design, the comprehensive mechanical property of the material is obviously improved; and moreover, thevermicularity and the pearlite content are stable; and the production cost is decreased.
公开/授权文献:
- CN109338207A 一种重型柴油发动机蠕墨铸铁缸盖材料及其制备工艺 公开/授权日:2019-02-15