CN101407885B - 一种高韧性耐腐蚀球墨铸铁材料 - Google Patents

一种高韧性耐腐蚀球墨铸铁材料 Download PDF

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CN101407885B
CN101407885B CN2008101599950A CN200810159995A CN101407885B CN 101407885 B CN101407885 B CN 101407885B CN 2008101599950 A CN2008101599950 A CN 2008101599950A CN 200810159995 A CN200810159995 A CN 200810159995A CN 101407885 B CN101407885 B CN 101407885B
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董飞
孟雷
辛彦
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YANTAI EDDIE HYDRAULIC TECHNOLOGY Co Ltd
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Abstract

本发明公开了一种高韧性耐腐蚀球墨铸铁材料,本发明公开了一种高韧性耐腐蚀球墨铸铁材料,其化学成分的重量百分比为:C:2.5~3.5%、Si:2.2~2.4%、Cr:5.3~5.6%、Mn:0.3~0.4%、Cu:0.3~0.5%、Al:0.3~0.4%、Mo:0.35~0.40%、Ni:1~1.5%、Mg:0.2~0.3%、RE:0.04~0.07%、S:0.02~0.03%、Sb:0.02~0.05%、Bi:0.01~0.03%、N≤0.05%、P≤0.06%,余量为Fe。本发明铸铁材料具有高韧性、很好的耐腐蚀性,能够满足大载货量、大功率、高车速的驱动桥桥壳类材料的要求。

Description

一种高韧性耐腐蚀球墨铸铁材料
技术领域
本发明涉及一种铸造材料,特别涉及一种高韧性耐腐蚀球墨铸铁材料。
背景技术
由于近年来随着基础建设加速和人民生活质量的提高,载重汽车也在向载货增加、功率增大、车速加快、外形美观舒适的方向发展,这样造成驱动桥桥壳疲劳寿命减小,同时伴随着工业的发展,大气中的工业污染物质(如SO2)含量也随之增加,对于一些曝露于大气中的铸件,受空气、蒸汽、水等弱腐蚀介质和酸、碱、盐等化学浸蚀,造成铸件锈蚀严重。特别是载重汽车驱动桥桥壳铸件要求具有高韧性耐腐蚀性。但目前,能达到上述性能要求的材料较少,且价格较贵,导致成本增加。
发明内容
本发明为了克服以上不足,提供了一种具有高韧性耐腐蚀球墨铸铁材料。
本发明是通过以下措施来实现的:
本发明公开了一种高韧性耐腐蚀球墨铸铁材料,其化学成分的重量百分比为:
C:2.5~3.5%、Si:2.2~2.4%、Cr:5.3~5.6%、Mn:0.3~0.4%、Cu:0.3~0.5%、Al:0.3~0.4%、Mo:0.35~0.40%、Ni:1~1.5%、Mg:0.2~0.3%、RE:0.04~0.07%、S:0.02~0.03%、Sb:0.02~0.05%、Bi:0.01~0.03%、N≤0.05%、P≤0.06%,余量为Fe。
本发明的进一步改进方案为:所述材料的化学成分的重量百分比为:
C:2.8~3.4%、Si:2.2~2.4%、Cr:5.4~5.6%、Mn:0.32~0.39%、Cu:0.33~0.45%、Al:0.31~0.38%、Mo:0.35~0.40%、Ni:1.2~1.5%、Mg:0.21~0.25%、RE:0.05~0.06%、S:0.02~0.03%、Sb:0.02~0.05%、Bi:0.02~0.03%、N≤0.04%、P≤0.05%,余量为Fe。
本发明的进一步改进方案为:所述材料的化学成分的重量百分比为:
C:3.3%、Si:2.3%、Cr:5.6%、Mn:0.35%、Cu:0.39%、Al:0.33%、Mo:0.36%、Ni:1.3%、Mg:0.23%、RE:0.05%、S:0.02%、Sb:0.03%、Bi:0.02%、N≤0.04%、P≤0.05%,余量为Fe。
本发明的铸铁材料,其性能参数见表1
表1
Figure GA20191914200810159995001D00021
本发明生产方法为:
1、严格按照所给出的化学成分比例,将球墨铸铁用生铁和各种所需合金配料。
2、将配好的料投入电炉中进行熔炼。
3、将熔炼后铁水进行球化处理,即往铁液中添加球化剂。
4、将熔炼后铁水进行孕育处理。
5、将球墨铸铁铁水,采用顺序凝固原则浇入事先制好的砂型中成型冷却,形成铸件。
6、对所得铸件进行热处理。
本发明有益效果:本发明铸铁材料具有高韧性,疲劳寿命(台架试验)可达100×104次以上,具有很好的耐腐蚀性,耐腐蚀性(盐雾试验)96h表面无明显锈蚀现象,能够满足大载货量、大功率、高车速的驱动桥桥壳类材料的要求。
具体实施方式
实施例1
本实施例为一种高韧性耐腐蚀球墨铸铁材料,其化学成分的重量百分比为:
C:2.8%、Si:2.25%、Cr:5.4%、Mn:0.33%、Cu:0.35%、Al:0.33%、Mo:0.35%、Ni:1.25%、Mg:0.22%、RE:0.05%、S:0.023%、Sb:0.03%、Bi:0.02%、N:0.035%、P:0.04%、余量为Fe。
将上述各种所需合金配料与球墨铸铁用生铁混合,投入电炉中,进行熔炼。把熔炼好的铁水进行球化、孕育,浇入事先制好的砂型中,成型冷却,即得所需材质的铸件。
将上述铸件进行测量,性能参数见表2:
表2
实施例2
本实施例为一种高韧性耐腐蚀球墨铸铁材料,其化学成分的重量百分比为:
C:3.5%、Si:2.2%、Cr:5.35%、Mn:0.38%、Cu:0.48%、Al:0.3%、Mo:0.40%、Ni:1.1%、Mg:0.27%、RE:0.045%、S:0.027%、Sb:0.05%、Bi:0.01%、N:0.03%、P:0.06%,余量为Fe。
将上述各种所需合金配料与球墨铸铁用生铁混合,投入电炉中,进行熔炼。把熔炼好的铁水进行孕育、球化,浇入事先制好的砂型中,成型冷却,即得所需材质的铸件。
将上述铸件进行测量,其性能参数见表3:
表3
Figure GA20191914200810159995001D00041
实施例3
本实施例为一种高韧性耐腐蚀球墨铸铁材料,其化学成分的重量百分比为:
C:3.4%、Si:2.35%、Cr:5.3%、Mn:0.38%、Cu:0.3%、Al:0.39%、Mo:0.40%、Ni:1.45%、Mg:0.22%、RE:0.05%、S:0.027%、Sb:0.05%、Bi:0.03%、N:0.03%、P:0.04%,余量为Fe。
将上述各种所需合金配料与球墨铸铁用生铁混合,投入电炉中,进行熔炼。把熔炼好的铁水进行球化、孕育,浇入事先制好的砂型中,成型冷却,即得所需材质的铸件。
将上述铸件进行测量,性能参数见表4:
表4
Figure GA20191914200810159995001D00051

Claims (3)

1.一种高韧性耐腐蚀球墨铸铁材料,其特征在于:所述材料的化学成分的重量百分比为:
C:2.5~3.5%、Si:2.2~2.4%、Cr:5.3~5.6%、Mn:0.3~0.4%、Cu:0.3~0.5%、Al:0.3~0.4%、Mo:0.35~0.40%、Ni:1~1.5%、Mg:0.2~0.3%、RE:0.04~0.07%、S:0.02~0.03%、Sb:0.02~0.05%、Bi:0.01~0.03%、N≤0.05%、P≤0.06%,余量为Fe。
2.根据权利要求1所述的高韧性耐腐蚀球墨铸铁材料,其特征在于:
所述材料的化学成分的重量百分比为:
C:8~3.4%、Si:2.2~2.4%、Cr:5.4~5.6%、Mn:0.32~0.39%、Cu:0.33~0.45%、Al:0.31~0.38%、Mo:0.35~0.40%、Ni:1.2~1.5%、Mg:0.21~0.25%、RE:0.05~0.06%、S:0.02~0.03%、Sb:0.02~0.05%、Bi:0.02~0.03%、N≤0.04%、P≤0.05%,余量为Fe。
3.根据权利要求2所述的高韧性耐腐蚀球墨铸铁材料,其特征在于:
所述材料的化学成分的重量百分比为:
C:2.8%、Si:2.25%、Cr:5.4%、Mn:0.33%、Cu:0.35%、Al:0.33%、Mo:0.35%、Ni:1.25%、Mg:0.22%、RE:0.05%、S:0.023%、Sb:0.03%、Bi:0.02%、N:0.035%、P:0.04%、余量为Fe。
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CN101602433B (zh) * 2009-07-01 2011-10-12 宣化冶金工业有限责任公司 CuNiMo合金化等温淬火球铁刮板输送机刮板及制备方法
CN101748325B (zh) * 2009-12-30 2011-05-18 山东省汇丰机械集团总公司章丘市铸造厂 一种高强度耐磨球铁卷筒及其制造方法
CN101775533B (zh) * 2010-02-12 2011-05-11 江苏共昌轧辊有限公司 高强、高韧性球墨铸铁及宽厚板工作辊
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CN102747268B (zh) * 2012-07-12 2013-12-25 中国重汽集团济南动力有限公司 高强度、高塑性球墨铸铁及其制造方法
CN102851571B (zh) * 2012-08-16 2015-09-09 芜湖市金贸流体科技股份有限公司 一种耐低温高韧性球墨铸铁及其制备方法
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