CN106734483B - 无拔模角油底壳液压拉延成型的方法 - Google Patents

无拔模角油底壳液压拉延成型的方法 Download PDF

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CN106734483B
CN106734483B CN201611051098.9A CN201611051098A CN106734483B CN 106734483 B CN106734483 B CN 106734483B CN 201611051098 A CN201611051098 A CN 201611051098A CN 106734483 B CN106734483 B CN 106734483B
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肖峰
唐子卫
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Hubei Tuao Mold Technology Co Ltd
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    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
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Abstract

本发明提出了无拔模角油底壳液压拉延成型的方法，步骤如下：（1）把拉延成型模具安装在液压拉延机上，在凹模型腔内的顶料板上注入抗挤压介质，保证完全覆盖顶料板；所述的抗挤压介质，由矿物油、羧酸盐、硼酸或硼酸盐、醇胺、石油磺酸钠、丙烯乙二醇醚、非离表面活性、消泡剂、杀菌剂混合而成；（2）在充满介质的型腔上放上平板料，在凸模上涂常规的拉延油；（3）合模：启动液压拉延机上，使拉延成型模具的上拉延成型模具、下模拉延成型模具合模；（4）退料：成型后的发动机油底壳退出拉延成型模具。采用本发明，产品的合格率达到了98%，零件上擦伤轻微，解决了冷冲压模具对材料的摩擦、材料厚度变化不均的弊端，无极限开裂，尺寸符合图纸要求。

Description

无拔模角油底壳液压拉延成型的方法
技术领域
本发明属于液压拉延成型技术领域，尤其是无拔模角油底壳液压拉延成型的方法。
背景技术
针对涡轮增压发动机油底壳，有一些产品类型是无拔模角油底壳，如图1所示，其侧壁A无拔模角的，采用常规的拉延方法无法冲压成型，在拉延模具的凸模表面、凹模型腔表面涂普通的拉延油无法达到目的，成型后，起皱、开裂严重，材料厚度不均。
发明内容
为了实现无拔模角油底壳的拉延成型，保证合格率，本发明提出无拔模角油底壳液压拉延成型的方法。
为此，本发明的技术方案如下：无拔模角油底壳液压拉延成型的方法，步骤如下：
（1）把拉延成型模具安装在液压拉延机上，在凹模型腔内的顶料板上注入抗挤压介质，保证完全覆盖顶料板；
所述的抗挤压介质，按质量百分比，由以下组分组成：29-31%的矿油，9-11%的羧酸盐，8-12%的硼酸或硼酸盐，19-21%的烷基醇胺，9-11%的石油磺酸钠，9-11%的丙烯乙二醇醚，8-10%的非离子表面活性剂，0.3-0.7%的消泡剂，0.3-0.7%的有机硫杀菌剂；
（2）在充满介质的型腔上放上平板料，在凸模上涂常规的拉延油；
（3）合模：启动液压拉延机上，使拉延成型模具的上拉延成型模具、下模拉延成型模具合模；
（4）退料：成型后的发动机油底壳退出拉延成型模具。
对上述技术方案的进一步说明：步骤（2）中常规的拉延油用步骤（1）中的抗挤压介质替代。
在上述技术方案中，所述羧酸盐选自甲酸盐、乙酸盐或草酸盐中的一种。
在上述技术方案中，所述硼酸盐选自硼氢化钠或硼酸氢铵中的一种。
在上述技术方案中，所述烷基醇胺选自N,N -二乙基乙醇胺、N,N-二甲基乙醇胺、N-甲基乙醇胺、二乙醇胺或三乙醇胺中的一种。
在上述技术方案中，所述有机硫杀菌剂选自代森铵、福美锌、代森锌或代森锰锌中的一种。
有益效果：本发明采用的抗挤压介质与现有技术的拉延油相比，用丙烯乙二醇醚替代部分矿物油，采用矿物油与丙烯乙二醇醚的组合配比起到抗挤压作用，丙烯乙二醇醚兼有润滑作用，加入羧酸盐强化了润滑作用，采用本发明应用于无拔模角油底壳液压拉延成型中的凹模型腔，替代现有的拉延油，在同样的拉延模具中实现了无拔模角油底壳的拉延成型，产品的合格率达到了98%，零件上擦伤轻微，解决了冷冲压模具对材料的摩擦、材料厚度变化不均的弊端，无极限开裂，尺寸符合图纸要求。
附图说明
图1是一种无拔模角油底壳的结构示意图。
具体实施方式
下面结合实施例，进一步描述本发明。
实施例1，制备抗挤压介质：
抗挤压介质，按质量百分比，由以下组分组成：30%的矿油；10%羧酸盐；10%硼酸或硼酸盐；20%烷基醇胺；9%石油磺酸钠；11%丙烯乙二醇醚；9%非离子表面活性剂；0.5%消泡剂；0.5%有机硫杀菌剂；
把各组分混合均匀，就得到抗挤压介质。
实施例2
用于无拔模角油底壳液压拉延成型的抗挤压介质，按质量百分比，由以下组分组成：31%的矿油，9%的羧酸盐，8%的硼酸或硼酸盐，21%的烷基醇胺，11%的石油磺酸钠，9%的丙烯乙二醇醚，10%的非离子表面活性剂，0.7%的消泡剂，0.3%的有机硫杀菌剂；把各组分混合均匀，就得到抗挤压介质。
在本发明中，所述羧酸盐选自甲酸盐、乙酸盐或草酸盐中的一种；优先甲酸的钠盐或钾盐，乙酸的钠盐或钾盐，草酸盐的钠盐或钾盐。
在本发明中，所述硼酸盐选自硼氢化钠或硼酸氢铵中的一种。
在本发明中，选择硼酸或硼酸盐时，优先硼酸。
在本发明中，所述烷基醇胺选自N,N -二乙基乙醇胺、N,N-二甲基乙醇胺、N-甲基乙醇胺、二乙醇胺或三乙醇胺中的一种。
在本发明中，所述非离子表面活性剂是现有技术，是市售产品；例如，非离子表面活性剂为脂肪醇聚氧乙烯醚或脂肪酸聚氧乙烯酯。
在本发明中，消泡剂是现有技术，是市售产品；例如，消泡剂选自有机硅氧烷或聚醚中的任意一种。
在上述技术方案中，所述有机硫杀菌剂是现有技术，是市售产品；所述有机硫杀菌剂选自代森铵、福美锌、代森锌或代森锰锌中的任意一种或两种。
本发明中，各组分具备的作用如下：
抗挤压作用：矿油、丙烯乙二醇醚；
润滑作用：羧酸盐、丙烯乙二醇醚、硼酸或硼酸盐；
缓蚀作用：烷基醇胺；
乳化作用：石油磺酸钠；
防锈作用：非离子表面活性剂；
消泡作用：消泡剂；
防腐杀菌作用：硼酸或硼酸盐、有机硫杀菌剂。
本发明中抗挤压介质的性能指标见上述的表1。
实施例3
无拔模角油底壳液压拉延成型的方法，步骤如下：
（1）把拉延成型模具安装在液压拉延机上，在凹模型腔内的顶料板上注入实施例1的抗挤压介质，保证完全覆盖顶料板；
（2）在充满介质的型腔上放上平板料，在凸模上涂常规的拉延油；
（3）合模：启动液压拉延机上，使拉延成型模具的上拉延成型模具、下模拉延成型模具合模；
（4）退料：成型后的发动机油底壳退出拉延成型模具。
实施例3的效果：经500件产品加工，合格率在98%。
实施例4
与实施例3的不同点是，在步骤（2）中用实施例1的抗挤压介质涂在凸模上，其余与实施例3相同。
实施例4的效果：经500件产品加工，合格率在100%。
可见，实施例4是优化的实施例。

Claims (3)

1.无拔模角油底壳液压拉延成型的方法，步骤如下：
（1）把拉延成型模具安装在液压拉延机上，在凹模型腔内的顶料板上注入抗挤压介质，保证完全覆盖顶料板；
所述的抗挤压介质，按质量百分比，由以下组分组成：29-31%的矿油，9-11%的羧酸盐，8-12%的硼酸或硼酸盐，19-21%的烷基醇胺，9-11%的石油磺酸钠，9-11%的丙烯乙二醇醚，8-10%的非离子表面活性剂，0.3-0.7%的消泡剂，0.3-0.7%的有机硫杀菌剂；
所述羧酸盐选自甲酸盐、乙酸盐或草酸盐中的一种；
（2）在充满介质的型腔上放上平板料，在凸模上涂抗挤压介质；
（3）合模：启动液压拉延机上，使拉延成型模具的上拉延成型模具、下模拉延成型模具合模；
（4）退料：成型后的发动机油底壳退出拉延成型模具。
2.根据权利要求1所述的无拔模角油底壳液压拉延成型的方法，其特征在于：所述硼酸盐选自硼氢化钠或硼酸氢铵中的一种。
3.根据权利要求1所述的无拔模角油底壳液压拉延成型的方法，其特征在于：所述烷基醇胺选自N,N -二乙基乙醇胺、N,N-二甲基乙醇胺、N-甲基乙醇胺、二乙醇胺或三乙醇胺中的一种。
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