CN105349877A - 一种高压水泵泵盖制备工艺 - Google Patents
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Abstract
本发明公开了一种高压水泵泵盖制备工艺,包括以下工艺步骤:该泵盖毛坯由以下质量百分数的化学成分组成:2.85%≤C≤3.15%,0.95≤Si≤1.25%,0.26%≤Co≤0.32%,0.03≤P≤0.12%,0.08≤B≤0.12%,0.01≤S≤0.09%,1.2%≤Cr≤1.4%,1.2%≤Mn≤1.4%,0.022%≤Sn≤0.042%,0.6≤Nb≤0.8%,0.32≤Ti≤0.52%,余量为Fe和不可避免的杂质;本发明利于大批量的泵盖的生产,泵盖抗弯强度和密封性能明显改善,产品的力学性能进一步改善,节约了产品用料,提高了产品的水泵寿命。
Description
技术领域
本发明涉及水泵制备领域,具体属于一种高压水泵泵盖制备工艺。
背景技术
泵盖是放置在刹车泵或离合器泵的储液罐上端。泵盖上有橡胶密封垫防止刹车液漏出,水分进入,泵盖可能是塑料或金属制成。对于高压水泵的泵盖,由于水泵内压力很大,因此,这样就要求泵盖具有足够抗弯强度、抗剪强度和较好的韧性。
发明内容
本发明的目的是提供一种高压水泵泵盖制备工艺,利于大批量的泵盖的生产,泵盖抗弯强度和密封性能明显改善,产品的力学性能进一步改善,节约了产品用料,提高了产品的水泵寿命。
本发明的技术方案如下:
一种高压水泵泵盖制备工艺,包括以下工艺步骤:
a、浇筑泵盖毛坯,该泵盖毛坯由以下质量百分数的化学成分组成:2.85%≤C≤3.15%,0.95≤Si≤1.25%,0.26%≤Co≤0.32%,0.03≤P≤0.12%,0.08≤B≤0.12%,0.01≤S≤0.09%,1.2%≤Cr≤1.4%,1.2%≤Mn≤1.4%,0.022%≤Sn≤0.042%,0.6≤Nb≤0.8%,0.32≤Ti≤0.52%,余量为Fe和不可避免的杂质;
b、将泵盖毛坯加热到1000℃~1100℃,再在平锻机上利用模具维形型腔对泵盖毛坯进行镦粗制坯,自然冷却后,再将泵轴加热至950-1000℃,并进行拔长-镦粗,之后冲孔、校直、修正尺寸使锻造比为3-5,最后进行热装炉扩氢方式冷却;
c、磷化处理,将冷却后的泵盖进行表面中温磷化处理:在65-70℃的温度下进行,磷酸盐溶液的游离酸度与总酸度的比值为1∶5-6,处理时间为70-80分钟;
d、防锈处理,将磷化处理后的泵轴放入防锈油中浸泡,油中温度为35-40℃,浸泡时间为80-90min,防锈油由以下重量份的原料组成:短油醇酸树脂50-60、丙烯酸乳液14-16、乙醇3-5、花生酸5-7、偏硼酸钡2.5-4.5、酰胺改性氢化蓖麻油1.5-2.5、甲基异丁酮3-5、流平剂2.5-3.5、去离子水20-30。
所述泵盖毛坯由以下质量百分数的化学成分组成:2.95%≤C≤3.05%,1.05≤Si≤1.15%,0.28%≤Co≤0.30%,0.05≤P≤0.1%,0.1≤B≤0.11%,0.04≤S≤0.07%,1.25%≤Cr≤1.35%,1.25%≤Mn≤1.35%,0.026%≤Sn≤0.038%,0.65≤Nb≤0.75%,0.36≤Ti≤0.48%。
本发明利于大批量的泵盖的生产,泵盖抗弯强度和密封性能明显改善,产品的力学性能进一步改善,节约了产品用料,提高了产品的水泵寿命。
本发明的Cr元素是铁素体形成元素,缩小Y区,能大大提高模具钢的强度和塑性,尤其在与Ni结合的钢中尤为显著,加入0.6≤Nb≤0.8%的作用主要是可得极细弥散相,对模具钢的耐热性能改善有,S有助于改善模具钢的切削性能,但是,S在模具钢中倾向于是有害元素,因此,应严格限制S的含量。经过检测,其耐磨性能高,最高硬度是62HRC,比SKD11提高了30%以上,热处理变形SKD11低25%,可切削性能是SKD11的1.8倍。
具体实施方式
一种高压水泵泵盖制备工艺,包括以下工艺步骤:
a、浇筑泵盖毛坯,该泵盖毛坯由以下质量百分数的化学成分组成:2.85%≤C≤3.15%,0.95≤Si≤1.25%,0.26%≤Co≤0.32%,0.03≤P≤0.12%,0.08≤B≤0.12%,0.01≤S≤0.09%,1.2%≤Cr≤1.4%,1.2%≤Mn≤1.4%,0.022%≤Sn≤0.042%,0.6≤Nb≤0.8%,0.32≤Ti≤0.52%,余量为Fe和不可避免的杂质;
b、将泵盖毛坯加热到1000℃~1100℃,再在平锻机上利用模具维形型腔对泵盖毛坯进行镦粗制坯,自然冷却后,再将泵轴加热至950-1000℃,并进行拔长-镦粗,之后冲孔、校直、修正尺寸使锻造比为3-5,最后进行热装炉扩氢方式冷却;
c、磷化处理,将冷却后的泵盖进行表面中温磷化处理:在65-70℃的温度下进行,磷酸盐溶液的游离酸度与总酸度的比值为1∶5-6,处理时间为70-80分钟;
d、防锈处理,将磷化处理后的泵轴放入防锈油中浸泡,油中温度为35-40℃,浸泡时间为80-90min,防锈油由以下重量份的原料组成:短油醇酸树脂50-60、丙烯酸乳液14-16、乙醇3-5、花生酸5-7、偏硼酸钡2.5-4.5、酰胺改性氢化蓖麻油1.5-2.5、甲基异丁酮3-5、流平剂2.5-3.5、去离子水20-30。
所述泵盖毛坯由以下质量百分数的化学成分组成:2.95%≤C≤3.05%,1.05≤Si≤1.15%,0.28%≤Co≤0.30%,0.05≤P≤0.1%,0.1≤B≤0.11%,0.04≤S≤0.07%,1.25%≤Cr≤1.35%,1.25%≤Mn≤1.35%,0.026%≤Sn≤0.038%,0.65≤Nb≤0.75%,0.36≤Ti≤0.48%。
本实施例1生产的轧辊性能检测结果如下表:
Claims (2)
1.一种高压水泵泵盖制备工艺,其特征在于,包括以下工艺步骤:
a、浇筑泵盖毛坯,该泵盖毛坯由以下质量百分数的化学成分组成:2.85%≤C≤3.15%,0.95≤Si≤1.25%,0.26%≤Co≤0.32%,0.03≤P≤0.12%,0.08≤B≤0.12%,0.01≤S≤0.09%,1.2%≤Cr≤1.4%,1.2%≤Mn≤1.4%,0.022%≤Sn≤0.042%,0.6≤Nb≤0.8%,0.32≤Ti≤0.52%,余量为Fe和不可避免的杂质;
b、将泵盖毛坯加热到1000℃~1100℃,再在平锻机上利用模具维形型腔对泵盖毛坯进行镦粗制坯,自然冷却后,再将泵轴加热至950-1000℃,并进行拔长-镦粗,之后冲孔、校直、修正尺寸使锻造比为3-5,最后进行热装炉扩氢方式冷却;
c、磷化处理,将冷却后的泵盖进行表面中温磷化处理:在65-70℃的温度下进行,磷酸盐溶液的游离酸度与总酸度的比值为1∶5-6,处理时间为70-80分钟;
d、防锈处理,将磷化处理后的泵轴放入防锈油中浸泡,油中温度为35-40℃,浸泡时间为80-90min,防锈油由以下重量份的原料组成:短油醇酸树脂50-60、丙烯酸乳液14-16、乙醇3-5、花生酸5-7、偏硼酸钡2.5-4.5、酰胺改性氢化蓖麻油1.5-2.5、甲基异丁酮3-5、流平剂2.5-3.5、去离子水20-30。
2.根据权利要求1所述高压水泵泵盖制备工艺,其特征在于,所述泵盖毛坯由以下质量百分数的化学成分组成:2.95%≤C≤3.05%,1.05≤Si≤1.15%,0.28%≤Co≤0.30%,0.05≤P≤0.1%,0.1≤B≤0.11%,0.04≤S≤0.07%,1.25%≤Cr≤1.35%,1.25%≤Mn≤1.35%,0.026%≤Sn≤0.038%,0.65≤Nb≤0.75%,0.36≤Ti≤0.48%。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105925875A (zh) * | 2016-05-18 | 2016-09-07 | 安徽合矿机械股份有限公司 | 一种耐磨球磨机钢球制备方法 |
CN106756465A (zh) * | 2016-12-27 | 2017-05-31 | 怀宁县鑫泰钢结构有限公司 | 一种保温软管用防锈接头 |
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CN102989983A (zh) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | 一种汽车发动机曲轴的锻造方法 |
CN103846378A (zh) * | 2014-02-11 | 2014-06-11 | 马鞍山市恒毅机械制造有限公司 | 一种汽车偏心轴的锻造方法 |
WO2014192117A1 (ja) * | 2013-05-30 | 2014-12-04 | 新日鐵住金株式会社 | 軟窒化高周波焼入れ鋼部品 |
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CN102989983A (zh) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | 一种汽车发动机曲轴的锻造方法 |
WO2014192117A1 (ja) * | 2013-05-30 | 2014-12-04 | 新日鐵住金株式会社 | 軟窒化高周波焼入れ鋼部品 |
CN103846378A (zh) * | 2014-02-11 | 2014-06-11 | 马鞍山市恒毅机械制造有限公司 | 一种汽车偏心轴的锻造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105925875A (zh) * | 2016-05-18 | 2016-09-07 | 安徽合矿机械股份有限公司 | 一种耐磨球磨机钢球制备方法 |
CN106756465A (zh) * | 2016-12-27 | 2017-05-31 | 怀宁县鑫泰钢结构有限公司 | 一种保温软管用防锈接头 |
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