表面电沉积合金层提高碳钢齿轮的接触疲劳强度研究  

Research on contact-fatigue strength of 45# steel gear drives with Ni-P-Co alloy coating

作　　者：李小周[1] 黄华梁[1] 

机构地区：[1]广西大学机械工程学院,广西南宁530004

出　　处：《工程设计学报》2002年第4期211-214,共4页Chinese Journal of Engineering Design

摘　　要：接触疲劳破坏是齿轮的主要失效形式之一 .在 4 5 #钢齿轮齿面电沉积 Ni- P- Co合金层 ,可以显著提高其接触疲劳强度 .同时 ,对合金层的表面形貌 ,表面粗糙度、显微硬度和疲劳点蚀坑形貌特征等进行了分析 .Contact fatigue failure is one of the failure type for steel gear. This paper researched the contact fatigue strength of Ni-P-Co alloy coating on surface of gears made from 45# steel. Several studies on the alloying coating, such as surface shape, surface roughness, micro-hardness and shape characteristic of fatigue pitting hole were carried out. The experimental results were analyzed and conclusion was as follows: contact fatigue life and strength of steel gears with Ni-P-Co alloy coating and air-cooling after heat-treatment with temperature of 450 ℃ are increased remarkably.

关 键 词：表面电沉积合金层 Ni-P-Co合金涂层 接触疲劳强度 抗点蚀能力 45#钢 齿轮传动 镍磷钼合金 寿命 

分 类 号：TH132.41[机械工程—机械制造及自动化] TG1[金属学及工艺—金属学]