摘要
介绍了拆柱机的基本组成部分，分析了旋转液压夹紧机构和固定液压夹头的结构组成，重点讨论了夹紧块材料选用中淬透性渗碳钢20CrNi3，经渗碳、淬火、低温回火，获得力学性能为，强度极限950MPa，屈服极限750MPa，伸长率11％，截面收缩率55％，冲击韧性90J·cm-2，活块表面硬度HRC58。63；指出夹紧块表面耐磨性，心部抗冲击性能都比中碳钢表面淬火明显提高，具有较高的抗弯曲疲劳性能．定位套材料选用40Cr调质，碟簧导向部位表面镀铬，获得心部抗弯扭．抗冲击综合性能，表面耐磨性高，提高使用寿命。
This paper briefly introduces the basic component of dismantle pillar machine, analyzes the structure of rotating hydraulic clamping device and fixed hydraulic device. Here mainly discussed hardenability carburizing steels 20CrNi3 that selected for clamping block, after carburizing, quenching and low-temperature tempering, obtains mechanical properties as following, intensity limit 950 MPa,yield limit 750 MPa, expanding rate 11%, section shrinkage rate 55%, impact toughness 90 J.cm-2,surface hardness HRC58-63. The paper points out that the surface abrasion resistance and center impact resistance of clamping block is obviously better than surface hardening medium-carbon steel, and lamping block has a higher flexural fatigue performance. 40Cr is selected to make locating sleeve, it was quenched and tempered. The steering parts of dish-shape spring is chromalized on surface, so it can resist bending, twist and impact, its surface abrasion resistance is high and service life is long.
出处
《煤矿机械》
北大核心
2013年第12期106-107,共2页
Coal Mine Machinery
关键词
夹紧装置
力学性能
调质处理
渗碳淬火
clamping device
mechanical properties
thermal refining
carburizing and quenching
作者简介
梅雨涛（1990-），浙江台州人，电子信箱：ehgzh169@126．com
