CN105855516A - 一种火力发电渗碳耐磨球制备方法 - Google Patents
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Abstract
本发明公开了一种火力发电渗碳耐磨球制备方法,包括有以下工艺步骤:先铸造耐磨球本体铸件,选择如下重量份配比的原料:锰铁2.2‑2.6份、废铁块25‑30份、废铜板0.4‑0.7份、造渣剂0.3‑0.5份,将上述原料放入熔炼炉中经过脱硫处理后,将脱硫处理后的熔液转入中频感应电炉中继续熔炼并保温,再向其中加入为该熔液重量0.5~1.2% 的球化剂,球化处理温度为900~960℃,在模具内浇注制得耐磨球本体铸件;本发明分两次分别浇注耐磨球本体、耐磨层,机械性能好、冲击韧性高的耐磨球,并且其中成分多为常规元素,生产成本低,便于推广。
Description
技术领域
本发明涉及耐磨材料领域,具体属于一种火力发电渗碳耐磨球制备方法。
背景技术
耐磨球是一种用于球磨机中的粉碎介质,用于粉碎磨机中的物料,一种是以铬为主要合金元素的白口铸铁简称铬合金铸铁,以铬合金铸铁为材料的铸造磨球称为铬合金铸铁磨球;另一种是以球墨铸铁为材料的铸造磨球称为球墨铸铁磨球,耐磨球主要应用于冶金矿山、水泥建材、火力发电等行业粉料生产与加工的主要设备,球磨机工作过程中,磨球属于主要易磨损件,对使用成本影响极大;随着工业的发展,各式大型球磨机逐年增加,磨球的消耗也大幅度增长。而现有的耐磨球晶体组织粗糙,硬度比较低,冲击韧性低,耐磨性能差等长缺点。现有中国专利好为201310658525.X一种耐磨球专利,其中该耐磨球中用到重量比为0.05-0.10%的稀土,耐磨球是常消耗品,采用稀土成本较高。
发明内容
本发明的目的是提供一种火力发电渗碳耐磨球制备方法,分两次分别浇注耐磨球本体、耐磨层,机械性能好、冲击韧性高的耐磨球,并且其中成分多为常规元素,生产成本低, 便于推广。
本发明的技术方案如下:
一种火力发电渗碳耐磨球制备方法,包括有以下工艺步骤:
1)、先铸造耐磨球本体铸件,选择如下重量份配比的原料:锰铁2.2-2.6份、废铁块25-30份、废铜板0.4-0.7份、造渣剂0.3-0.5份,将上述原料放入熔炼炉中经过脱硫处理后,将脱硫处理后的熔液转入中频感应电炉中继续熔炼并保温,再向其中加入为该熔液重量0.5~1.2% 的球化剂,球化处理温度为900~960℃,在模具内浇注制得耐磨球本体铸件;
2)、将步骤1)制得的耐磨球本体铸件放入铸造模具内进行表面耐磨层的浇注,厚度为3-5mm表面耐磨层中各合金成分质量百分比为:C2.6~2.9%,Si1.2~1.5%,Mn1.6~2.2%,Mo0.3%~0.5%,S0.006%~0.015%,Cr2.5~2.8%,P0.004~0.008%,Ti0.15~0.25%,V0.05~0.11%,Ni0.35~0.45%,W0.1~0.2%,Cu0.3~0.6%,Zn0.02~0.08%,余量为铁;
3)然后将耐磨球铸件进行盐浴淬火,盐浴处理温度为220-240℃,盐浴处理保温时间为1.2-1.5h,熔盐各成分重量比为:纯碱20-22份、氯化钾11-13份、磷酸钠3-5份、磷酸镁6-8份;
4)、最后将耐磨球铸件放入渗碳炉内渗碳,渗碳温度800~850℃,碳浓度为10-12%,时间2~3小时,渗碳后随炉冷却。
所述的熔盐各成分重量比为:纯碱21份、氯化钾12份、磷酸钠4份、磷酸镁7份。
本发明经超声波探伤检测,材料的内部缺陷得到了有效消除,原料取材方便,同时成本较低,分两次分别浇注耐磨球本体、耐磨层,表面耐磨层磨损后可重新进行铸造,大大节约了生产成本,同时增加了渗碳工序,对于耐磨性有进一步的提高,机械性能好、冲击韧性高的耐磨球,并且其中成分多为常规元素,生产成本低, 便于推广。
具体实施方式
一种火力发电渗碳耐磨球制备方法,包括有以下工艺步骤:
1)、先铸造耐磨球本体铸件,选择如下重量份配比的原料:锰铁2.2-2.6份、废铁块25-30份、废铜板0.4-0.7份、造渣剂0.3-0.5份,将上述原料放入熔炼炉中经过脱硫处理后,将脱硫处理后的熔液转入中频感应电炉中继续熔炼并保温,再向其中加入为该熔液重量0.5~1.2% 的球化剂,球化处理温度为900~960℃,在模具内浇注制得耐磨球本体铸件;
2)、将步骤1)制得的耐磨球本体铸件放入铸造模具内进行表面耐磨层的浇注,厚度为3-5mm表面耐磨层中各合金成分质量百分比为:C2.6~2.9%,Si1.2~1.5%,Mn1.6~2.2%,Mo0.3%~0.5%,S0.006%~0.015%,Cr2.5~2.8%,P0.004~0.008%,Ti0.15~0.25%,V0.05~0.11%,Ni0.35~0.45%,W0.1~0.2%,Cu0.3~0.6%,Zn0.02~0.08%,余量为铁;
3)然后将耐磨球铸件进行盐浴淬火,盐浴处理温度为220-240℃,盐浴处理保温时间为1.2-1.5h,熔盐各成分重量比为:纯碱21份、氯化钾12份、磷酸钠4份、磷酸镁7份;
4)、最后将耐磨球铸件放入渗碳炉内渗碳,渗碳温度800~850℃,碳浓度为10-12%,时间2~3小时,渗碳后随炉冷却。
Claims (2)
1.一种火力发电渗碳耐磨球制备方法,其特征在于,包括有以下工艺步骤:
1)、先铸造耐磨球本体铸件,选择如下重量份配比的原料:锰铁2.2-2.6份、废铁块25-30份、废铜板0.4-0.7份、造渣剂0.3-0.5份,将上述原料放入熔炼炉中经过脱硫处理后,将脱硫处理后的熔液转入中频感应电炉中继续熔炼并保温,再向其中加入为该熔液重量0.5~1.2% 的球化剂,球化处理温度为900~960℃,在模具内浇注制得耐磨球本体铸件;
2)、将步骤1)制得的耐磨球本体铸件放入铸造模具内进行表面耐磨层的浇注,厚度为3-5mm表面耐磨层中各合金成分质量百分比为:C2.6~2.9%,Si1.2~1.5%,Mn1.6~2.2%,Mo0.3%~0.5%,S0.006%~0.015%,Cr2.5~2.8%,P0.004~0.008%,Ti0.15~0.25%,V0.05~0.11%,Ni0.35~0.45%,W0.1~0.2%,Cu0.3~0.6%,Zn0.02~0.08%,余量为铁;
3)然后将耐磨球铸件进行盐浴淬火,盐浴处理温度为220-240℃,盐浴处理保温时间为1.2-1.5h,熔盐各成分重量比为:纯碱20-22份、氯化钾11-13份、磷酸钠3-5份、磷酸镁6-8份;
4)、最后将耐磨球铸件放入渗碳炉内渗碳,渗碳温度800~850℃,碳浓度为10-12%,时间2~3小时,渗碳后随炉冷却。
2.根据权利要求1所述的火力发电渗碳耐磨球制备方法,其特征在于,所述的熔盐各成分重量比为:纯碱21份、氯化钾12份、磷酸钠4份、磷酸镁7份。
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CN106319307A (zh) * | 2016-11-14 | 2017-01-11 | 安徽名杰净化科技有限公司 | 一种抗扭空气净化器用风轮制备方法 |
CN106567014A (zh) * | 2016-11-14 | 2017-04-19 | 安徽名杰净化科技有限公司 | 一种空气净化器合金连接法兰制备方法 |
CN107557657A (zh) * | 2017-09-06 | 2018-01-09 | 马鞍山市万兴耐磨金属制造有限公司 | 一种具有复合耐磨层的低铬合金耐磨钢球及其制造方法 |
CN108384931A (zh) * | 2018-04-10 | 2018-08-10 | 武汉理工大学 | 一种用于弹簧钢分级淬火的熔融盐相变介质 |
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CN108384931A (zh) * | 2018-04-10 | 2018-08-10 | 武汉理工大学 | 一种用于弹簧钢分级淬火的熔融盐相变介质 |
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