CN105908074A - 一种叉车用双杆吊臂制备工艺 - Google Patents

一种叉车用双杆吊臂制备工艺 Download PDF

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CN105908074A
CN105908074A CN201610354487.2A CN201610354487A CN105908074A CN 105908074 A CN105908074 A CN 105908074A CN 201610354487 A CN201610354487 A CN 201610354487A CN 105908074 A CN105908074 A CN 105908074A
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武子静
黄胜
陈亚雄
邓广新
刘丽
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Hefei Hean Machinery Manufacturing Co Ltd
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Abstract

本发明公开了一种叉车用双杆吊臂制备工艺，包括以下工艺步骤：该钢锭由以下质量百分数的化学成分组成：1.45%≤C≤1.85%，1.25≤Si≤1.55%，0.17%≤Co≤0.22%，0.003≤P≤0.012%，0.01≤S≤0.05%，1.15%≤Cr≤1.25%，0.2%≤Mn≤0.4%，0.05≤Nb≤0.08%，0.02≤Ti≤0.04%，余量为Fe和不可避免的杂质；有利于大批量的吊臂生产，吊臂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，提高了产品的吊臂寿命。

Description

一种叉车用双杆吊臂制备工艺
技术领域
本发明涉及发动机制备领域，具体属于一种叉车用双杆吊臂制备工艺。
背景技术
叉车用双杆吊臂的可靠性，必须在产品设计、制造和维护过程中推行可靠性工程。在轴承产品设计中，除要进行可靠性预计、可靠性指标分配、疲劳失效模式及其影响与危害性分析外，还要对轴承样品做可靠性试验，以验证可靠性设计达到目标与否。在产品制造过程中，需要加强对可靠性的质量控制，保证可靠性设计要求。与普通轴承相比，叉车用双杆吊臂的可靠性要求高，生产批量小且成本高。
发明内容
本发明的目的是提供一种叉车用双杆吊臂制备工艺，有利于大批量的吊臂生产，吊臂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，提高了产品的吊臂寿命。
本发明的技术方案如下：
一种叉车用双杆吊臂制备工艺，包括以下工艺步骤：
a、浇筑钢锭，该钢锭由以下质量百分数的化学成分组成：1.45%≤C≤1.85%，1.25≤Si≤1.55%，0.17%≤Co≤0.22%，0.003≤P≤0.012%，0.01≤S≤0.05%，1.15%≤Cr≤1.25%，0.2%≤Mn≤0.4%，0.05≤Nb≤0.08%，0.02≤Ti≤0.04%，余量为Fe和不可避免的杂质；
b、将钢锭加热到1040℃～1200℃，在平锻机上利用模具维形型腔对钢锭毛坯进行镦粗制坯，自然冷却后，再将钢锭加热至950-1000℃，并进行拔长-镦粗，之后冲孔、校直、修正尺寸使锻造比为4-6；
c、酸洗处理，将吊臂锻件放入质量分数12-14%的NaOH溶液进行蒸煮1-1.2小时，再用2-3mol/l的硝酸溶液进行酸降解0.4-0.8小时，温度70-80℃；
d、先进行正火处理，将吊臂在580-620℃下保温1-1.2小时左右，取出后再进行淬火处理：送入热处理炉中加热到550-580℃，并保温1.3-1.8小时；然后用淬火油冷却，最后进行回火处理：将淬火后的吊臂送入回火炉中加热到480-520℃，保温50-60min；
e、将吊臂进行防锈处理：在155-185℃的温度下进行，在防锈液中浸泡1-1.2h，防锈液由以下重量份的各原料组成：石油磺酸钡 6-10、脂肪酸胺盐8-10、乙二醇单丁醚3-5、烷基磺酸盐0.4-0.8、羊毛脂镁皂1.5-2.5、三羟甲基丙烷2.5-4.5、十二醇3.5-4.5、过氧化钾1.2-1.5、消泡剂0.4-0.8、植物油30-32。
所述防锈液由以下重量份的各原料组成：石油磺酸钡 8、脂肪酸胺盐9、乙二醇单丁醚4、烷基磺酸盐0.6、羊毛脂镁皂2、三羟甲基丙烷3.5、十二醇4、过氧化钾1.4、消泡剂0.6、植物油31。
本发明有利于大批量的吊臂生产，吊臂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，提高了产品的吊臂寿命。
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0.17%≤Co≤0.22%作用主要是可得极细弥散相，对吊臂的耐热性能改善,S有助于改善有的切削性能，但是，S在吊臂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60HRC，比SKD11提高了20%以上，热处理变形SKD11低21%，可切削性能是SKD11的1.1倍。
具体实施方式
一种叉车用双杆吊臂制备工艺，包括以下工艺步骤：
a、浇筑钢锭，该钢锭由以下质量百分数的化学成分组成：1.45%≤C≤1.85%，1.25≤Si≤1.55%，0.17%≤Co≤0.22%，0.003≤P≤0.012%，0.01≤S≤0.05%，1.15%≤Cr≤1.25%，0.2%≤Mn≤0.4%，0.05≤Nb≤0.08%，0.02≤Ti≤0.04%，余量为Fe和不可避免的杂质；
b、将钢锭加热到1040℃～1200℃，在平锻机上利用模具维形型腔对钢锭毛坯进行镦粗制坯，自然冷却后，再将钢锭加热至950-1000℃，并进行拔长-镦粗，之后冲孔、校直、修正尺寸使锻造比为4-6；
c、酸洗处理，将吊臂锻件放入质量分数12-14%的NaOH溶液进行蒸煮1-1.2小时，再用2-3mol/l的硝酸溶液进行酸降解0.4-0.8小时，温度70-80℃；
d、先进行正火处理，将吊臂在580-620℃下保温1-1.2小时左右，取出后再进行淬火处理：送入热处理炉中加热到550-580℃，并保温1.3-1.8小时；然后用淬火油冷却，最后进行回火处理：将淬火后的吊臂送入回火炉中加热到480-520℃，保温50-60min；
e、将吊臂进行防锈处理：在155-185℃的温度下进行，在防锈液中浸泡1-1.2h，防锈液由以下重量份的各原料组成：石油磺酸钡 8、脂肪酸胺盐9、乙二醇单丁醚4、烷基磺酸盐0.6、羊毛脂镁皂2、三羟甲基丙烷3.5、十二醇4、过氧化钾1.4、消泡剂0.6、植物油31。

Claims (2)

1.一种叉车用双杆吊臂制备工艺，其特征在于，包括以下工艺步骤：
a、浇筑钢锭，该钢锭由以下质量百分数的化学成分组成：1.45%≤C≤1.85%，1.25≤Si≤1.55%，0.17%≤Co≤0.22%，0.003≤P≤0.012%，0.01≤S≤0.05%，1.15%≤Cr≤1.25%，0.2%≤Mn≤0.4%，0.05≤Nb≤0.08%，0.02≤Ti≤0.04%，余量为Fe和不可避免的杂质；
b、将钢锭加热到1040℃～1200℃，在平锻机上利用模具维形型腔对钢锭毛坯进行镦粗制坯，自然冷却后，再将钢锭加热至950-1000℃，并进行拔长-镦粗，之后冲孔、校直、修正尺寸使锻造比为4-6；
c、酸洗处理，将吊臂锻件放入质量分数12-14%的NaOH溶液进行蒸煮1-1.2小时，再用2-3mol/l的硝酸溶液进行酸降解0.4-0.8小时，温度70-80℃；
d、先进行正火处理，将吊臂在580-620℃下保温1-1.2小时左右，取出后再进行淬火处理：送入热处理炉中加热到550-580℃，并保温1.3-1.8小时；然后用淬火油冷却，最后进行回火处理：将淬火后的吊臂送入回火炉中加热到480-520℃，保温50-60min；
e、将吊臂进行防锈处理：在155-185℃的温度下进行，在防锈液中浸泡1-1.2h，防锈液由以下重量份的各原料组成：石油磺酸钡 6-10、脂肪酸胺盐8-10、乙二醇单丁醚3-5、烷基磺酸盐0.4-0.8、羊毛脂镁皂1.5-2.5、三羟甲基丙烷2.5-4.5、十二醇3.5-4.5、过氧化钾1.2-1.5、消泡剂0.4-0.8、植物油30-32。
2.根据权利要求1所述叉车用双杆吊臂制备工艺，其特征在于，所述防锈液由以下重量份的各原料组成：石油磺酸钡 8、脂肪酸胺盐9、乙二醇单丁醚4、烷基磺酸盐0.6、羊毛脂镁皂2、三羟甲基丙烷3.5、十二醇4、过氧化钾1.4、消泡剂0.6、植物油31。
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CN105316602A (zh) * 2015-11-04 2016-02-10 合肥海源机械有限公司 一种高强度叉车门架制备方法
CN105414424A (zh) * 2015-11-04 2016-03-23 合肥海源机械有限公司 一种含镍铬合金叉车叉齿锻造方法

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CN105316602A (zh) * 2015-11-04 2016-02-10 合肥海源机械有限公司 一种高强度叉车门架制备方法
CN105414424A (zh) * 2015-11-04 2016-03-23 合肥海源机械有限公司 一种含镍铬合金叉车叉齿锻造方法

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Application publication date: 20160831