基本信息:
- 专利标题： 一种Mn增硬耐磨铸铁及其制造与热处理方法
- 专利标题（英）：Mn-toughened wear-resistant cast iron and manufacturing and heat method thereof
- 申请号：CN201910433227.8 申请日：2019-05-22
- 公开(公告)号：CN110004379A 公开(公告)日：2019-07-12
- 发明人： 罗丰华 , 杜帅 , 黄小琴 , 高翔 , 吴博天 , 申珍珍
- 申请人： 中南大学
- 申请人地址： 湖南省长沙市岳麓区麓山南路932号
- 专利权人： 中南大学
- 当前专利权人： 中南大学
- 当前专利权人地址： 湖南省长沙市岳麓区麓山南路932号
- 优先权： 201810589916.3 2018.06.08 CN
- 主分类号： C22C38/32
- IPC分类号： C22C38/32 ; C22C38/38 ; C22C38/04 ; C22C38/26 ; C22C38/24 ; C22C38/02 ; C22C33/06
The invention relates to Mn-toughened wear-resistant cast iron and a manufacturing and heat method thereof. All alloy elements include 9.0-13.0% of Cr, 2.6-2.9% of B, 0.7-0.9% of C, 0.8-1.6% of Mn, 0.4-0.8% of Nb, 0.4-0.8% of V, and the balance Fe, wherein the total amount of C and B is 3.3-3.6%, the content ratio of C/Cr is 0.06-0.08, and the total amount of Nb and V is 0.5-1.0%. The other raw materials except ferromanganese are melted at 1520-1620 DEG C, cooled to 1300-1350 DEG C, and added with pure aluminum to be deoxidized; when the temperature drops to 1280-1320 DEG C, the ferromanganeseis added, and the alloy can be cast at 1250-1300 DEG C. The average hardness of the cast ingot is HRC 65.9-70.2, the impact toughness of the cast ingot reaches 10.6 -16.2 J/ cm<2>; and the bending strength reaches 1018 to 1396 MPa.