CN104789119A - 一种发动机油底壳 - Google Patents

一种发动机油底壳 Download PDF

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CN104789119A
CN104789119A CN201510215109.1A CN201510215109A CN104789119A CN 104789119 A CN104789119 A CN 104789119A CN 201510215109 A CN201510215109 A CN 201510215109A CN 104789119 A CN104789119 A CN 104789119A
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田庭
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Xian Cummins Engine Co Ltd
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Abstract

一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,铁合金的成分简单;因油底壳槽体内表面长期接触油脂,会对其内表面造成损伤。

Description

一种发动机油底壳
技术领域
本发明涉一种发动机油底壳,属于汽车配件技术领域。
背景技术
油底壳位于发动机下部,可拆装。传统的油底壳多由薄钢板冲压而成,但其同时存在着如下的缺点或不足:常发生渗漏现象;增加了油料消耗,浪费能源,增加作业成本;加了机械零件磨损,技术状态恶化,功率下降;缩短了机械零件的使用寿命,加大修理费用;影响发动机容貌和机器整洁及发动性能的好坏。
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、耐蚀性性良好的发动机油底壳。
一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C:0.06-0.07﹪,Cr:8-9﹪,Ni:3-4﹪,W:0.6-0.7﹪,Si:0.4-0.5﹪,Cu:0.2-0.3﹪,Nb:0.2-0.3﹪,V:0.1-0.2﹪,Ti:0.08-0.09﹪,Sn:0.04-0.05﹪,Mn:0.02-0.03﹪,Mg:0.02-0.03﹪,Ta:0.01-0.02﹪,Y:0.01-0.02﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 20-30份,氧化硅 10-20份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂120-130份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1-2份,得到最终的油底壳。
所述的一种发动机油底壳,油底壳本体化学组成为(重量百分比):C:0.06﹪,Cr:8﹪,Ni:3﹪,W:0.6﹪,Si:0.4﹪,Cu:0.2﹪,Nb:0.2﹪,V:0.1﹪,Ti:0.08﹪,Sn:0.04﹪,Mn:0.02﹪,Mg:0.02﹪,Ta:0.01﹪,Y:0.01﹪,余量为Fe及不可避免的杂质。
所述的一种发动机油底壳,油底壳本体化学组成为(重量百分比):C: 0.07﹪,Cr: 9﹪,Ni: 4﹪,W: 0.7﹪,Si: 0.5﹪,Cu: 0.3﹪,Nb: 0.3﹪,V: 0.2﹪,Ti: 0.09﹪,Sn: 0.05﹪,Mn: 0.03﹪,Mg: 0.03﹪,Ta: 0.02﹪,Y: 0.02﹪,余量为Fe及不可避免的杂质。
所述的一种发动机油底壳,油底壳本体化学组成为(重量百分比):C:0.065﹪,Cr:8.5﹪,Ni:3.5﹪,W:0.65﹪,Si:0.45﹪,Cu:0.25﹪,Nb:0.25﹪,V:0.15﹪,Ti:0.085﹪,Sn:0.045﹪,Mn:0.025﹪,Mg:0.025﹪,Ta:0.015﹪,Y:0.015﹪,余量为Fe及不可避免的杂质。
所述的一种发动机油底壳,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 20份,氧化硅 10份。
所述的一种发动机油底壳,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 30份,氧化硅20份。
所述的一种发动机油底壳,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 25份,氧化硅 15份。
所述的一种发动机油底壳,涂料包括(重量):有机硅树脂120份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1份。
所述的一种发动机油底壳,涂料包括(重量):有机硅树脂130份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺2份。
所述的一种发动机油底壳,涂料包括(重量):有机硅树脂125份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1.5份。
所述的一种发动机油底壳,还包括:安装边缘上开有安装孔,安装孔可以通过机械加工方式实现。
一种发动机油底壳及其制造方法,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C:0.06-0.07﹪,Cr:8-9﹪,Ni:3-4﹪,W:0.6-0.7﹪,Si:0.4-0.5﹪,Cu:0.2-0.3﹪,Nb:0.2-0.3﹪,V:0.1-0.2﹪,Ti:0.08-0.09﹪,Sn:0.04-0.05﹪,Mn:0.02-0.03﹪,Mg:0.02-0.03﹪,Ta:0.01-0.02﹪,Y:0.01-0.02﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 20-30份,氧化硅 10-20份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂120-130份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1-2份,得到最终的油底壳。
上述发明内容相对于现有技术的有益效果在于:1)铁合金的成分简单;2)因油底壳槽体内表面长期接触油脂,会对其内表面造成损伤,3)通过在铁合金油底壳槽体内表面涂覆碳化钨系涂层,提高耐蚀性能。4)对油底壳槽体外表面形成有机涂层有效提高耐候抗污性能。
附图说明
图1为油底壳本体截面图。
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。
如图1所示油底壳本体截面图,油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘3,矩形槽体内表面1涂覆有碳化钨系涂层(未示出),矩形槽体外表面2涂覆耐蚀涂料(未示出),
实施例1
一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C:0.06﹪,Cr:8﹪,Ni:3﹪,W:0.6﹪,Si:0.4﹪,Cu:0.2﹪,Nb:0.2﹪,V:0.1﹪,Ti:0.08﹪,Sn:0.04﹪,Mn:0.02﹪,Mg:0.02﹪,Ta:0.01﹪,Y:0.01﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 20份,氧化硅 10份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂120份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1份,得到最终的油底壳。
实施例2
一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C: 0.07﹪,Cr: 9﹪,Ni: 4﹪,W: 0.7﹪,Si: 0.5﹪,Cu: 0.3﹪,Nb: 0.3﹪,V: 0.2﹪,Ti: 0.09﹪,Sn: 0.05﹪,Mn: 0.03﹪,Mg: 0.03﹪,Ta: 0.02﹪,Y: 0.02﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 30份,氧化硅20份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂130份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺2份,得到最终的油底壳。
实施例3
一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C:0.065﹪,Cr:8.5﹪,Ni:3.5﹪,W:0.65﹪,Si:0.45﹪,Cu:0.25﹪,Nb:0.25﹪,V:0.15﹪,Ti:0.085﹪,Sn:0.045﹪,Mn:0.025﹪,Mg:0.025﹪,Ta:0.015﹪,Y:0.015﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系陶瓷材料层包括(重量):碳化钨50份,氧化锆 25份,氧化硅 15份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂125份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1.5份,得到最终的油底壳。
实施例4
一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C:0.063﹪,Cr:8.2﹪,Ni:3.1﹪,W:0.62﹪,Si:0.43﹪,Cu:0.24﹪,Nb:0.24﹪,V:0.12﹪,Ti:0.081﹪,Sn:0.043﹪,Mn:0.023﹪,Mg:0.022﹪,Ta:0.013﹪,Y:0.012﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系陶瓷材料层包括(重量):碳化钨50份,氧化锆 23份,氧化硅 14份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂122份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1.3份,得到最终的油底壳。
实施例5
一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C:0.067﹪,Cr:8.6﹪,Ni:3.8﹪,W:0.67﹪,Si:0.48﹪,Cu:0.29﹪,Nb:0.28﹪,V:0.17﹪,Ti:0.086﹪,Sn:0.046﹪,Mn:0.027﹪,Mg:0.027﹪,Ta:0.018﹪,Y:0.018﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系陶瓷材料层包括(重量):碳化钨50份,氧化锆 27份,氧化硅 18份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂129份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1.7份,得到最终的油底壳。

Claims (10)

1.一种发动机油底壳,包括油底壳本体,油底壳本体具有矩形截面槽体,在槽体上部设置有安装边缘,矩形槽体内表面涂覆有碳化钨系涂层,矩形槽体外表面涂覆耐蚀涂料,
其特征在于:油底壳本体化学组成为(重量百分比):C:0.06-0.07﹪,Cr:8-9﹪,Ni:3-4﹪,W:0.6-0.7﹪,Si:0.4-0.5﹪,Cu:0.2-0.3﹪,Nb:0.2-0.3﹪,V:0.1-0.2﹪,Ti:0.08-0.09﹪,Sn:0.04-0.05﹪,Mn:0.02-0.03﹪,Mg:0.02-0.03﹪,Ta:0.01-0.02﹪,Y:0.01-0.02﹪,余量为Fe及不可避免的杂质;
油底壳制备方法:包括以下步骤:按照上述比例配制合金,原料熔炼、浇注,脱模后,得到的铸锭进行热处理:首先将铸锭进行加热,升温至800℃,升温速率75℃/小时,保温3小时,后降温至600℃,降温速率100℃/小时,保温3小时,后升温至750℃,升温速率20℃/小时,保温3小时,后再次降温至500℃,降温速率40℃/小时,保温5小时,后再次降温至250℃,降温速率50℃/小时,保温2小时,后空冷至室温,
锻造:将铸锭加热至1100℃保温3小时,后进行锻造,开锻温度1100℃,将铸锭竖直镦粗,压力机每压下40mm停顿4s,终锻温度850℃,
轧制:将锻造后的坯料进行加热,加热温度1000℃,开坯轧制采用7道次,开坯时道次相对压下率控制在15-18%,轧制速度控制在8mm/s,开坯后板坯在800℃进行保温,保温时间3小时,后升温至1100℃,保温时间控制在2小时,然后对坯板进行热轧,热轧11道次,初轧道次相对压下率8%,其他道次相对压下率控制在10-15%,轧制速度控制在50mm/s,终轧温度在820℃;板材厚度2mm,轧制后空冷至室温,
冲压:将板材加热至800℃进行冲压,空冷至室温,得到油底壳本体,
热处理:油底壳本体加热至750℃保温3小时,后进行淬火,淬火介质为水,淬火后重新加热到500℃保温3小时,后降温至350℃,降温速率60℃/小时,保温2小时,后再次降温至250℃,降温速率50℃/小时,保温3小时,后空冷至室温,
喷砂粗化:对油底壳本体中矩形槽体的内表面和外表面进行喷砂粗化处理,砂粒为石英砂,砂粒的大小为20目,喷砂压力为0.4MPa,喷砂枪距工件距离为40mm,喷砂后用压缩空气吹净;
内表面涂覆:对油底壳槽体内表面进行涂覆碳化钨系涂层;通过涂覆在油底壳槽体内表面形成碳化钨系涂层,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 20-30份,氧化硅 10-20份,将涂覆后的油底壳进行加热,升温至700℃,升温速率100℃/小时,保温4小时,后降温至550℃,降温速率60℃/小时,保温3小时,后再次降温至200℃,降温速率30℃/小时,保温7小时,后空冷至室温,
外表面涂覆:对油底壳槽体外表面进行涂覆耐蚀涂料,所述涂料包括(重量):有机硅树脂120-130份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1-2份,得到最终的油底壳。
2.如权利要求1所述的一种发动机油底壳,油底壳本体化学组成为(重量百分比):C:0.06﹪,Cr:8﹪,Ni:3﹪,W:0.6﹪,Si:0.4﹪,Cu:0.2﹪,Nb:0.2﹪,V:0.1﹪,Ti:0.08﹪,Sn:0.04﹪,Mn:0.02﹪,Mg:0.02﹪,Ta:0.01﹪,Y:0.01﹪,余量为Fe及不可避免的杂质。
3.如权利要求1所述的一种发动机油底壳,油底壳本体化学组成为(重量百分比):C: 0.07﹪,Cr: 9﹪,Ni: 4﹪,W: 0.7﹪,Si: 0.5﹪,Cu: 0.3﹪,Nb: 0.3﹪,V: 0.2﹪,Ti: 0.09﹪,Sn: 0.05﹪,Mn: 0.03﹪,Mg: 0.03﹪,Ta: 0.02﹪,Y: 0.02﹪,余量为Fe及不可避免的杂质。
4.如权利要求1所述的一种发动机油底壳,油底壳本体化学组成为(重量百分比):C:0.065﹪,Cr:8.5﹪,Ni:3.5﹪,W:0.65﹪,Si:0.45﹪,Cu:0.25﹪,Nb:0.25﹪,V:0.15﹪,Ti:0.085﹪,Sn:0.045﹪,Mn:0.025﹪,Mg:0.025﹪,Ta:0.015﹪,Y:0.015﹪,余量为Fe及不可避免的杂质。
5.如权利要求1所述的一种发动机油底壳,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 20份,氧化硅 10份。
6.如权利要求1所述的一种发动机油底壳,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 30份,氧化硅20份。
7.如权利要求1所述的一种发动机油底壳,碳化钨系材料层包括(重量):碳化钨50份,氧化锆 25份,氧化硅 15份。
8.如权利要求1-8所述的一种发动机油底壳,涂料包括(重量):有机硅树脂120份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1份。
9.如权利要求1-8所述的一种发动机油底壳,涂料包括(重量):有机硅树脂130份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺2份。
10.如权利要求1-8所述的一种发动机油底壳,涂料包括(重量):有机硅树脂125份,硅酸钠20份,玻璃粉20份,滑石粉10份,乙二胺5份,氯化镁3份,磷酸锌5份,聚甲基丙烯酰亚胺1.5份。
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