CN110777321A - 基于表面处理的耐磨气缸套的制造方法 - Google Patents

基于表面处理的耐磨气缸套的制造方法 Download PDF

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CN110777321A
CN110777321A CN201911303724.2A CN201911303724A CN110777321A CN 110777321 A CN110777321 A CN 110777321A CN 201911303724 A CN201911303724 A CN 201911303724A CN 110777321 A CN110777321 A CN 110777321A
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Abstract

本发明公开了一种基于表面处理的耐磨气缸套的制造方法,涉及柴油机配件技术领域。本发明包括以下步骤:气缸套基体预处理、喷涂0.03~0.045mm厚的TiN粘接层、预热、喷涂0.23~0.26mm厚的Cr3C2‑NiCr陶瓷涂层,喷涂结束后,对工件进行热处理热处理。本发明通过合金的耐磨表面处理技术,在气缸套基体的表面上喷涂有陶瓷涂层,并合理改善喷涂工艺,提高气缸套的耐磨性,延长柴油机零部件的使用寿命,并提高了燃油率,降低了柴油机废气含硫氧化物和氮氧化物的排放,保护环境,降低使用成本。

Description

基于表面处理的耐磨气缸套的制造方法
技术领域
本发明属于柴油机配件技术技术领域,特别是涉及基于表面处理的耐磨气缸套的制造方法。
背景技术
气缸套是内燃机中处于最为恶劣工况下工作的部件,不但承受强大的机械负荷和热负荷,同时受着润滑条件的种种限制,因此气缸套的使用寿命基本上决定了内燃机的大修期限。气缸套的材质和铸造工艺对选用表面加工工艺及其参数有着重要影响,选取表面加工工艺,必须要考虑各方面的因素,否则选定不当的加工工艺,反而会导致气缸套使用寿命的下降。
激光硬化处理只适合离心铸造的气缸套,对砂型铸造的缸套不适用。因为砂型铸造的内部金属组织相对疏松,激光处理后,硬化带宽度不易保证,激光硬化不均匀,易出现光孔状缺陷的金属表面。在使用激光硬化加工工艺时必须针对不同材料、不同铸造工艺等因素合理选择工艺参数和激光束运动轨迹,避免对气缸套的使用寿命产生严重的负面影响。现提供一种基于表面处理的耐磨气缸套的制造方法,提高气缸套的耐磨性,延长柴油机零部件的使用寿命,降低使用成本。
发明内容
本发明的目的在于提供一种基于表面处理的耐磨气缸套的制造方法,通过合金的耐磨表面处理技术,在气缸套基体的表面上喷涂有陶瓷涂层,并合理改善喷涂工艺,提高气缸套的耐磨性,延长柴油机零部件的使用寿命,降低使用成本。
为解决上述技术问题,本发明是通过以下技术方案实现的:
本发明为基于表面处理的耐磨气缸套的制造方法,包括以下步骤:
SS01:预处理:将气缸套基体在400~800#的水砂纸上打磨至表面光洁无划痕,并对活塞环基体进行除油、活化处理;
SS02:喷涂粘接层:采用等离子喷涂设备在气缸套基体的表面上喷涂一层TiN层;喷涂时,电弧的电流设定为440~455A,电压设定为68~70V;
SS03:预热:将工件加热至110~130℃;
SS04:喷涂陶瓷涂层:采用超音速火焰喷涂设备在粘接层表面上喷涂一层厚为0.23~0.26mm的Cr3C2-NiCr涂层;
SS05:热处理:将工件放入炉中,加热至120~150℃,并保温3~4小时。
进一步地,喷涂所述TiN层采用的粉末为Ti合金粉,所述Ti合金粉各成分的重量百分比如下:Ti:82~87.5%,Fe:0.03~0.065%,Cr:3~3.5%,Si:0.015~0.03%,C:0.004~0.007%,Al:0.008~0.015%,N:0.03~0.055%。
进一步地,所述等离子喷涂设备喷涂TiN层的厚度为0.03~0.045mm,喷涂距离为145~150mm。
进一步地,喷涂所述Cr3C2-NiCr涂层采用的喷涂粉末为商用包覆型Cr3C2-NiCr粉末,所述Cr3C2-NiCr粉末的成分为80Cr3C2-20NiCr,所述Cr3C2-NiCr粉末中碳化物尺寸为4~6μm。
进一步地,所述气缸套基体各成分的重量百分比如下:C:1.25~2.78%,Si:0.25~0.6%,Mn:0.6~0.9%,S:0.003~0.005%,P:0.004~0.007%,Nb:0.15~0.22%,Ni:0.19~0.38%,Mo:0.84~1.57%,Cr:8.2~10.5%,V:0.07~0.13%,W:0.02~0.05%,其余为Fe。
本发明具有以下有益效果:
本发明通过合金的耐磨表面处理技术,在气缸套基体的表面上喷涂有陶瓷涂层,并合理改善喷涂工艺,提高气缸套的耐磨性,延长柴油机零部件的使用寿命,并提高了燃油率,降低了柴油机废气含硫氧化物和氮氧化物的排放,保护环境,降低使用成本。
当然,实施本发明的任一产品并不一定需要同时达到以上所述的所有优点。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
本发明为基于表面处理的耐磨气缸套的制造方法,包括以下步骤:
SS01:预处理:将气缸套基体在400~800#的水砂纸上打磨至表面光洁无划痕,并对活塞环基体进行除油、活化处理;
SS02:喷涂粘接层:采用等离子喷涂设备在气缸套基体的表面上喷涂一层TiN层;喷涂时,电弧的电流设定为440~455A,电压设定为68~70V;
SS03:预热:将工件加热至110~130℃;
SS04:喷涂陶瓷涂层:采用超音速火焰喷涂设备在粘接层表面上喷涂一层厚为0.23~0.26mm的Cr3C2-NiCr涂层;
SS05:热处理:将工件放入炉中,加热至120~150℃,并保温3~4小时。
其中,喷涂TiN层采用的粉末为Ti合金粉,Ti合金粉各成分的重量百分比如下:Ti:82~87.5%,Fe:0.03~0.065%,Cr:3~3.5%,Si:0.015~0.03%,C:0.004~0.007%,Al:0.008~0.015%,N:0.03~0.055%。
其中,等离子喷涂设备喷涂TiN层的厚度为0.03~0.045mm,喷涂距离为145~150mm。
其中,喷涂Cr3C2-NiCr涂层采用的喷涂粉末为商用包覆型Cr3C2-NiCr粉末,Cr3C2-NiCr粉末的成分为80Cr3C2-20NiCr,Cr3C2-NiCr粉末中碳化物尺寸为4~6μm。
其中,气缸套基体各成分的重量百分比如下:C:1.25~2.78%,Si:0.25~0.6%,Mn:0.6~0.9%,S:0.003~0.005%,P:0.004~0.007%,Nb:0.15~0.22%,Ni:0.19~0.38%,Mo:0.84~1.57%,Cr:8.2~10.5%,V:0.07~0.13%,W:0.02~0.05%,其余为Fe。
具体实施例一:
SS01:预处理:将气缸套基体在500#的水砂纸上打磨至表面光洁无划痕,并对活塞环基体进行除油、活化处理;气缸套基体各成分的重量百分比如下:C:1.25%,Si:0.25%,Mn:0.6%,S:0.003%,P:0.004%,Nb:0.15%,Ni:0.19%,Mo:0.84%,Cr:8.2%,V:0.07%,W:0.02%,其余为Fe;
SS02:喷涂粘接层:采用等离子喷涂设备在气缸套基体的表面上喷涂一层TiN层,TiN层的厚度为0.03mm,喷涂距离为145mm,;喷涂时,电弧的电流设定为440A,电压设定为68V;喷涂TiN层采用的粉末为Ti合金粉,Ti合金粉各成分的重量百分比如下:Ti:82%,Fe:0.03%,Cr:3%,Si:0.015%,C:0.004%,Al:0.008%,N:0.03%;
SS03:预热:将工件加热至110℃;
SS04:喷涂陶瓷涂层:采用超音速火焰喷涂设备在粘接层表面上喷涂一层厚为0.23mm的Cr3C2-NiCr涂层;喷涂Cr3C2-NiCr涂层采用的喷涂粉末为商用包覆型Cr3C2-NiCr粉末,Cr3C2-NiCr粉末的成分为80Cr3C2-20NiCr,Cr3C2-NiCr粉末中碳化物尺寸为4μm;
SS05:热处理:将工件放入炉中,加热至120℃,并保温3小时。
采用此方法制得的气缸套,表面硬度达980~1100Hv,结合强度高,孔隙率较低,具有较好的耐热腐蚀性,提高气缸套的耐磨性,延长柴油机零部件的使用寿命。
具体实施例二:
SS01:预处理:将气缸套基体在400~800#的水砂纸上打磨至表面光洁无划痕,并对活塞环基体进行除油、活化处理;气缸套基体各成分的重量百分比如下:C:1.25~2.78%,Si:0.25~0.6%,Mn:0.6~0.9%,S:0.003~0.005%,P:0.004~0.007%,Nb:0.15~0.22%,Ni:0.19~0.38%,Mo:0.84~1.57%,Cr:8.2~10.5%,V:0.07~0.13%,W:0.02~0.05%,其余为Fe;
SS02:喷涂粘接层:采用等离子喷涂设备在气缸套基体的表面上喷涂一层TiN层,TiN层的厚度为0.03~0.045mm,喷涂距离为145~150mm,;喷涂时,电弧的电流设定为440~455A,电压设定为68~70V;喷涂TiN层采用的粉末为Ti合金粉,Ti合金粉各成分的重量百分比如下:Ti:82~87.5%,Fe:0.03~0.065%,Cr:3~3.5%,Si:0.015~0.03%,C:0.004~0.007%,Al:0.008~0.015%,N:0.03~0.055%;
SS03:预热:将工件加热至110~130℃;
SS04:喷涂陶瓷涂层:采用超音速火焰喷涂设备在粘接层表面上喷涂一层厚为0.23~0.26mm的Cr3C2-NiCr涂层;喷涂Cr3C2-NiCr涂层采用的喷涂粉末为商用包覆型Cr3C2-NiCr粉末,Cr3C2-NiCr粉末的成分为80Cr3C2-20NiCr,Cr3C2-NiCr粉末中碳化物尺寸为4~6μm;
SS05:热处理:将工件放入炉中,加热至120~150℃,并保温3~4小时。
SS05:热处理:将工件放入炉中,加热至120℃,并保温3小时。
采用此方法制得的气缸套,表面硬度达1200~1350Hv,提高了燃油率,降低了柴油机废气含硫氧化物和氮氧化物的排放,保护环境,降低使用成本,孔隙率较低,耐热腐蚀性好,提高气缸套的耐磨性,延长柴油机零部件的使用寿命。
具体实施例三:
SS01:预处理:将气缸套基体在400~800#的水砂纸上打磨至表面光洁无划痕,并对活塞环基体进行除油、活化处理;气缸套基体各成分的重量百分比如下:C:1.25~2.78%,Si:0.25~0.6%,Mn:0.6~0.9%,S:0.003~0.005%,P:0.004~0.007%,Nb:0.15~0.22%,Ni:0.19~0.38%,Mo:0.84~1.57%,Cr:8.2~10.5%,V:0.07~0.13%,W:0.02~0.05%,其余为Fe;
SS02:喷涂粘接层:采用等离子喷涂设备在气缸套基体的表面上喷涂一层TiN层,TiN层的厚度为0.03~0.045mm,喷涂距离为145~150mm,;喷涂时,电弧的电流设定为440~455A,电压设定为68~70V;喷涂TiN层采用的粉末为Ti合金粉,Ti合金粉各成分的重量百分比如下:Ti:82~87.5%,Fe:0.03~0.065%,Cr:3~3.5%,Si:0.015~0.03%,C:0.004~0.007%,Al:0.008~0.015%,N:0.03~0.055%;
SS03:预热:将工件加热至110~130℃;
SS04:喷涂陶瓷涂层:采用超音速火焰喷涂设备在粘接层表面上喷涂一层厚为0.23~0.26mm的Cr3C2-NiCr涂层;喷涂Cr3C2-NiCr涂层采用的喷涂粉末为商用包覆型Cr3C2-NiCr粉末,Cr3C2-NiCr粉末的成分为80Cr3C2-20NiCr,Cr3C2-NiCr粉末中碳化物尺寸为4~6μm;
SS05:热处理:将工件放入炉中,加热至120~150℃,并保温3~4小时。
采用此方法制得的气缸套,表面硬度达1130~1200Hv,喷涂涂层致密,孔隙率较低,耐热腐蚀性好,提高气缸套的耐磨性,延长柴油机零部件的使用寿命。
本说明书的描述中,参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为所述的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。

Claims (5)

1.基于表面处理的耐磨气缸套的制造方法,其特征在于,包括以下步骤:
SS01:预处理:将气缸套基体在400~800#的水砂纸上打磨至表面光洁无划痕,并对活塞环基体进行除油、活化处理;
SS02:喷涂粘接层:采用等离子喷涂设备在气缸套基体的表面上喷涂一层TiN层;喷涂时,电弧的电流设定为440~455A,电压设定为68~70V;
SS03:预热:将工件加热至110~130℃;
SS04:喷涂陶瓷涂层:采用超音速火焰喷涂设备在粘接层表面上喷涂一层厚为0.23~0.26mm的Cr3C2-NiCr涂层;
SS05:热处理:将工件放入炉中,加热至120~150℃,并保温3~4小时。
2.根据权利要求1所述的基于表面处理的耐磨气缸套的制造方法,其特征在于,喷涂所述TiN层采用的粉末为Ti合金粉,所述Ti合金粉各成分的重量百分比如下:
Ti:82~87.5%,Fe:0.03~0.065%,Cr:3~3.5%,Si:0.015~0.03%,C:0.004~0.007%,Al:0.008~0.015%,N:0.03~0.055%。
3.根据权利要求1所述的基于表面处理的耐磨气缸套的制造方法,其特征在于,所述等离子喷涂设备喷涂TiN层的厚度为0.03~0.045mm,喷涂距离为145~150mm。
4.根据权利要求1所述的基于表面处理的耐磨气缸套的制造方法,其特征在于,喷涂所述Cr3C2-NiCr涂层采用的喷涂粉末为商用包覆型Cr3C2-NiCr粉末,所述Cr3C2-NiCr粉末的成分为80Cr3C2-20NiCr,所述Cr3C2-NiCr粉末中碳化物尺寸为4~6μm。
5.根据权利要求1所述的基于表面处理的耐磨气缸套的制造方法,其特征在于,所述气缸套基体各成分的重量百分比如下:
C:1.25~2.78%,Si:0.25~0.6%,Mn:0.6~0.9%,S:0.003~0.005%,P:0.004~0.007%,Nb:0.15~0.22%,Ni:0.19~0.38%,Mo:0.84~1.57%,Cr:8.2~10.5%,V:0.07~0.13%,W:0.02~0.05%,其余为Fe。
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