论文部分内容阅读
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950 MPa,屈服极限750 MPa,伸长率11%,截面收缩率55%,冲击韧性90 J·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。
The paper introduces the basic components of the dismantling machine, analyzes the structure of the rotating hydraulic clamping mechanism and the fixed hydraulic chuck, and mainly discusses the hardenability carburizing steel 20CrNi3 in the choice of clamping block material. After carburizing, quenching, low temperature After tempering, the mechanical properties are as follows: strength limit 950 MPa, yield point 750 MPa, elongation 11%, cross-sectional shrinkage 55%, impact toughness 90 J · cm-2 and surface hardness HRC58 ~ 63; Block surface wear resistance, heart impact resistance than medium carbon steel surface hardening was significantly improved, with high resistance to bending fatigue, positioning sleeve material selection 40Cr quenching and tempering, the surface of the disc spring guide chrome, get the heart bending Twist, impact resistance Comprehensive performance, high surface abrasion resistance, improve service life.