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qi men zuo de xiu li yu geng huan fang fa
Pages: 98
Year: Issue:  12
Journal: Farm Machinery Using & Maintenance

Abstract: 气门座是发动机气缸盖进、排气口直接与气门密封锥面接触的部位,其功用是与气门配合,使气缸密封.在使用中气门座热负荷大,温差变化大,还受到气门落座时的冲击,气门座工作面会出现磨损、烧蚀、斑点或凹坑,应通过铰削、修磨等工艺恢复其工作性能.
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