广东造船
廣東造船
엄동조선
GUANGDONG SHIPBUILDING
2014年
6期
92-94,86
,共4页
阀桥导柱%疲劳强度%疲劳断裂
閥橋導柱%疲勞彊度%疲勞斷裂
벌교도주%피로강도%피로단렬
Valve bridge guide post%Fatigue strength%Fatigue fracture
本文对阀桥导柱断裂的原因进行了分析和计算，发现导柱材料疲劳强度低以及前后排气阀存在温差，使阀桥单边产生弯矩，进而使得导柱疲劳断裂。通过改进导柱材料，提高抗疲劳强度，有效解决了这一问题。
本文對閥橋導柱斷裂的原因進行瞭分析和計算，髮現導柱材料疲勞彊度低以及前後排氣閥存在溫差，使閥橋單邊產生彎矩，進而使得導柱疲勞斷裂。通過改進導柱材料，提高抗疲勞彊度，有效解決瞭這一問題。
본문대벌교도주단렬적원인진행료분석화계산，발현도주재료피로강도저이급전후배기벌존재온차，사벌교단변산생만구，진이사득도주피로단렬。통과개진도주재료，제고항피로강도，유효해결료저일문제。
This paper analyzes the cause for fracture of valve bridge guide post by calculation, ifnds that material fatigue strength of the guide post is low, and temperature difference between rear and front exhaust valves makes the unilateral valve bridge produce bending moment, thus makes the guide post fatigue fracture. By improving the guide post material to enhance fatigue strength, the problem has effectively been solved.
