2) intake valve seat insert
进气门座嵌圈
3) valve clear diameter
气门座孔内径
4) valve seat
气门座圈
1.
Through machining experiments,it is found that ceramal is an appropriate cutting material for valve seats made of Cr-Mo-Ni powder metallurgy,from point of view of whether the machining accuracy or tool-life.
通过对高性能粉末冶金气门座圈的切削实验,获知无论是加工精度还是刀具寿命,金属陶瓷是较为合适的刀具材料;根据气门座圈与气门导管孔的位置精度要求,提出新的加工工艺方法,设计了相应的可转位机夹刀片和精密组合刀具的结构。
2.
High alloyed valve seats,taken Fe (11～13)Cr (0 5～2)Mo (1 8～2 5)C (2～4)Me as raw material,were fabricated in high quality by P/M sintering infiltration process.
采用粉末冶金烧结熔浸工艺制备出以Fe ( 1 1～ 1 3)Cr ( 0 5～ 2 )Mo ( 1 8～ 2 5)C ( 2～ 4 )Me为原料的高合金、高性能粉末冶金气门座圈 ;并简要介绍了该气门座圈的密度、硬度、抗热冲击、机加工性能以及组织结构。
3.
The failure of the powder metallurgy valve seat was analyzed by optical microscopy, scanning electronic microscopy, X-ray energy spectrum and X-ray diffraction.
采用力学、物理性能测试,金相、扫描电镜、能谱和X衍射分析研究了气门座圈产品失效的主要原因。
5) valve seat ring
气门座圈
1.
The research is made in the text about several processing technologies for improving the processing precision of valve seat ring and valve stem guide hole of cylinder head, so that the process technology can improve towards to high precision、high efficiency、low cost continuously.
为使气缸盖气门座圈和导管孔的加工工艺继续向着高精度、高效率、低成本方向发展,本文对“基于提高气缸盖气门座圈和导管孔的加工精度的几种加工工艺”进行研究,通过分析得出加工气缸盖气门座圈和导管孔最有效、精度最可靠的工艺方法是枪镗、精车工艺即采用枪铰或枪镗的加工技术,使用专用铰刀或镗刀对气缸盖气门座圈和导管孔进行加工。
6) valve and seat
气门/座圈
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条