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CN106151467A - 一种铝合金变速箱箱体 - Google Patents

一种铝合金变速箱箱体 Download PDF

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CN106151467A
CN106151467A CN201610452220.7A CN201610452220A CN106151467A CN 106151467 A CN106151467 A CN 106151467A CN 201610452220 A CN201610452220 A CN 201610452220A CN 106151467 A CN106151467 A CN 106151467A
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高旋
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Xuzhou Super Jie Electric Vehicle Accessories Co Ltd
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Abstract

一种铝合金变速箱箱体,包括下箱体和与下箱体相连的上箱体,上箱体和下箱体内表面涂覆有氧化锆系陶瓷材料层,上箱体和下箱体外表面涂覆耐热涂料,铝合金的成分简单;对该成分的铝合金进行钝化的表面处理工序,避免出现任何表面黑点等问题,使获得表面整洁。

Description

一种铝合金变速箱箱体
技术领域
本发明涉一种铝合金变速箱箱体,属于汽车配件技术领域。
背景技术
在世界汽车市场的激烈竞争中,各国都在向高质量、高可靠性、重量轻、节能、低成本方向发展。在材料方面表现为轻量化,用铝合金代替部分钢(铁)件,以达到汽车向高质量、低成本的发展的要求;在工艺方面表现为科学性,用先进工艺取代传统的工艺以达到提高毛坯精度,减少加工余量,减少原材料消耗,降低成本的目的。要进一步扩大铝合金材料在汽车结构和动力总成系统的运用,现有的铝合金铸件的制备方法和制造工艺已难以满足这一要求。
发明内容
本发明就是针对上述问题而提出的一种工艺简单、成本低、耐蚀性性良好的铝合金变速箱箱体。
一种铝合金变速箱箱体,包括下箱体和与下箱体相连的上箱体,上箱体和下箱体内表面涂覆有氧化锆系陶瓷材料层,上箱体和下箱体外表面涂覆耐热涂料,
所述上箱体和下箱体为铝合金材质,铝合金化学组成为(重量百分比):Sn:10-11﹪、:Cu 8.3﹪、Mg:4.1﹪,Si:2.4﹪、Ti:1.2﹪、Ni 0.73﹪、Zn:0.52﹪、Mn:0.21﹪、Zr:0.072﹪、Ce:0.033﹪、Mo :0.052﹪,Ca:0.061﹪,Ag:0.082﹪,余量为Al以及不可避免的杂质;
上箱体和下箱体的制备方法:包括以下步骤:按照上述铝合金化学成分配料,先将铝锭加入到熔炼炉中,炉温控制在720℃,待铝锭熔化后,铝液温度升到730℃加入锡铝中间合金,后将炉温升高到735℃加入铜铝中间合金;后将炉温升高到740℃加入镁铝中间合金和纯硅;后将炉温升高到745℃加入其他合金元素,后炉温升高到760℃,加入精炼净化剂,精炼净化剂加入量为炉料量的0.8%,搅拌40分钟,静置60分钟,待渣与金属液分离,扒渣,后加入覆盖剂,静置30分钟后再次扒渣,之后对上箱体和下箱体分别进行浇注;浇注温度为740℃;得到的上箱体和下箱体进行热处理:首先将上箱体和下箱体进行加热,升温至560℃,升温速率50℃/小时,保温2小时,之后进行淬火处理,淬火介质为水,淬火后将上箱体和下箱体从室温加热至500℃,升温速率100℃/小时,保温7小时,后降温至300℃,降温速率50℃/小时,保温3小时,后再次降温至200℃,降温速率50℃/小时,保温9小时,后空冷至室温,所述精炼净化剂包括:氯化铝60%,硝酸铝20%,氯化钾10%,硝酸钠5%, 氯化锰5%,所述覆盖剂包括:硫酸铝40%,硫酸钡20%,氯化钠10%;铝氟酸钠10%;氧化铝10%,氟化钠10%,覆盖剂总加入量为炉料量的0.8%,
之后对上箱体和下箱体表面进行钝化处理,其中:钝化液组成为(重量):柠檬酸三钠15份,氢氟酸11份,氟钛酸7份,硫酸镍6份,氯化铈2.2份,高锰酸钾1.4份,水27份;
之后对上箱体和下箱体内表面进行涂覆氧化锆系陶瓷材料;通过涂覆在内表面形成氧化锆系陶瓷材料层,氧化锆系陶瓷材料层厚度0.5mm,氧化锆系陶瓷材料层包括(重量):氧化锆51份, 氧化硅12份,碳化硅 5份,碳化钛 5份,将涂覆后的上箱体和下箱体进行加热,升温至450℃,升温速率50℃/小时,保温3小时,后降温至350℃,降温速率100℃/小时,保温4小时,后再次降温至200℃,降温速率75℃/小时,保温6小时,后空冷至室温,
之后对上箱体和下箱体外表面进行涂覆耐热涂料;所述涂料包括(重量):有机硅树脂100份,石墨20份,硅酸钠20份,纳米级氧化铝10份,乙二胺5份,膨润土3份,氧化硼3份,磷酸锌1份,氧化铈5份,乙醇20份,得到最终的箱体。
上述发明内容相对于现有技术的有益效果在于:1)铝合金的成分简单;2)对该成分的铝合金进行钝化的表面处理工序,避免出现任何表面黑点等问题,使获得表面整洁;3)因箱体内表面长期接触变速箱油,会对其内表面造成损伤,通过在铝合金箱体内表面涂覆氧化锆系涂层,提高耐蚀性能。4)对箱体外表面形成有机涂层有效提高耐候抗污性能。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解,现详细说明本发明的具体实施方式。
实施例1
一种铝合金变速箱箱体,包括下箱体和与下箱体相连的上箱体,上箱体和下箱体内表面涂覆有氧化锆系陶瓷材料层,上箱体和下箱体外表面涂覆耐热涂料,
所述上箱体和下箱体为铝合金材质,铝合金化学组成为(重量百分比):Sn:10-11﹪、:Cu 8.3﹪、Mg:4.1﹪,Si:2.4﹪、Ti:1.2﹪、Ni 0.73﹪、Zn:0.52﹪、Mn:0.21﹪、Zr:0.072﹪、Ce:0.033﹪、Mo :0.052﹪,Ca:0.061﹪,Ag:0.082﹪,余量为Al以及不可避免的杂质;
上箱体和下箱体的制备方法:包括以下步骤:按照上述铝合金化学成分配料,先将铝锭加入到熔炼炉中,炉温控制在720℃,待铝锭熔化后,铝液温度升到730℃加入锡铝中间合金,后将炉温升高到735℃加入铜铝中间合金;后将炉温升高到740℃加入镁铝中间合金和纯硅;后将炉温升高到745℃加入其他合金元素,后炉温升高到760℃,加入精炼净化剂,精炼净化剂加入量为炉料量的0.8%,搅拌40分钟,静置60分钟,待渣与金属液分离,扒渣,后加入覆盖剂,静置30分钟后再次扒渣,之后对上箱体和下箱体分别进行浇注;浇注温度为740℃;得到的上箱体和下箱体进行热处理:首先将上箱体和下箱体进行加热,升温至560℃,升温速率50℃/小时,保温2小时,之后进行淬火处理,淬火介质为水,淬火后将上箱体和下箱体从室温加热至500℃,升温速率100℃/小时,保温7小时,后降温至300℃,降温速率50℃/小时,保温3小时,后再次降温至200℃,降温速率50℃/小时,保温9小时,后空冷至室温,所述精炼净化剂包括:氯化铝60%,硝酸铝20%,氯化钾10%,硝酸钠5%, 氯化锰5%,所述覆盖剂包括:硫酸铝40%,硫酸钡20%,氯化钠10%;铝氟酸钠10%;氧化铝10%,氟化钠10%,覆盖剂总加入量为炉料量的0.8%,
之后对上箱体和下箱体表面进行钝化处理,其中:钝化液组成为(重量):柠檬酸三钠15份,氢氟酸11份,氟钛酸7份,硫酸镍6份,氯化铈2.2份,高锰酸钾1.4份,水27份;
之后对上箱体和下箱体内表面进行涂覆氧化锆系陶瓷材料;通过涂覆在内表面形成氧化锆系陶瓷材料层,氧化锆系陶瓷材料层厚度0.5mm,氧化锆系陶瓷材料层包括(重量):氧化锆51份, 氧化硅12份,碳化硅 5份,碳化钛 5份,将涂覆后的上箱体和下箱体进行加热,升温至450℃,升温速率50℃/小时,保温3小时,后降温至350℃,降温速率100℃/小时,保温4小时,后再次降温至200℃,降温速率75℃/小时,保温6小时,后空冷至室温,
之后对上箱体和下箱体外表面进行涂覆耐热涂料;所述涂料包括(重量):有机硅树脂100份,石墨20份,硅酸钠20份,纳米级氧化铝10份,乙二胺5份,膨润土3份,氧化硼3份,磷酸锌1份,氧化铈5份,乙醇20份,得到最终的箱体。

Claims (1)

1.一种铝合金变速箱箱体铝合金变速箱箱体,包括下箱体和与下箱体相连的上箱体,上箱体和下箱体内表面涂覆有氧化锆系陶瓷材料层,上箱体和下箱体外表面涂覆耐热涂料,
所述上箱体和下箱体为铝合金材质,铝合金化学组成为(重量百分比):Sn:10-11﹪、:Cu 8.3﹪、Mg:4.1﹪,Si:2.4﹪、Ti:1.2﹪、Ni 0.73﹪、Zn:0.52﹪、Mn:0.21﹪、Zr:0.072﹪、Ce:0.033﹪、Mo :0.052﹪,Ca:0.061﹪,Ag:0.082﹪,余量为Al以及不可避免的杂质;
上箱体和下箱体的制备方法:包括以下步骤:按照上述铝合金化学成分配料,先将铝锭加入到熔炼炉中,炉温控制在720℃,待铝锭熔化后,铝液温度升到730℃加入锡铝中间合金,后将炉温升高到735℃加入铜铝中间合金;后将炉温升高到740℃加入镁铝中间合金和纯硅;后将炉温升高到745℃加入其他合金元素,后炉温升高到760℃,加入精炼净化剂,精炼净化剂加入量为炉料量的0.8%,搅拌40分钟,静置60分钟,待渣与金属液分离,扒渣,后加入覆盖剂,静置30分钟后再次扒渣,之后对上箱体和下箱体分别进行浇注;浇注温度为740℃;得到的上箱体和下箱体进行热处理:首先将上箱体和下箱体进行加热,升温至560℃,升温速率50℃/小时,保温2小时,之后进行淬火处理,淬火介质为水,淬火后将上箱体和下箱体从室温加热至500℃,升温速率100℃/小时,保温7小时,后降温至300℃,降温速率50℃/小时,保温3小时,后再次降温至200℃,降温速率50℃/小时,保温9小时,后空冷至室温,所述精炼净化剂包括:氯化铝60%,硝酸铝20%,氯化钾10%,硝酸钠5%, 氯化锰5%,所述覆盖剂包括:硫酸铝40%,硫酸钡20%,氯化钠10%;铝氟酸钠10%;氧化铝10%,氟化钠10%,覆盖剂总加入量为炉料量的0.8%,
之后对上箱体和下箱体表面进行钝化处理,其中:钝化液组成为(重量):柠檬酸三钠15份,氢氟酸11份,氟钛酸7份,硫酸镍6份,氯化铈2.2份,高锰酸钾1.4份,水27份;
之后对上箱体和下箱体内表面进行涂覆氧化锆系陶瓷材料;通过涂覆在内表面形成氧化锆系陶瓷材料层,氧化锆系陶瓷材料层厚度0.5mm,氧化锆系陶瓷材料层包括(重量):氧化锆51份, 氧化硅12份,碳化硅 5份,碳化钛 5份,将涂覆后的上箱体和下箱体进行加热,升温至450℃,升温速率50℃/小时,保温3小时,后降温至350℃,降温速率100℃/小时,保温4小时,后再次降温至200℃,降温速率75℃/小时,保温6小时,后空冷至室温,
之后对上箱体和下箱体外表面进行涂覆耐热涂料;所述涂料包括(重量):有机硅树脂100份,石墨20份,硅酸钠20份,纳米级氧化铝10份,乙二胺5份,膨润土3份,氧化硼3份,磷酸锌1份,氧化铈5份,乙醇20份,得到最终的箱体。
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