注册 登录  
 加关注
   显示下一条  |  关闭
温馨提示!由于新浪微博认证机制调整,您的新浪微博帐号绑定已过期,请重新绑定!立即重新绑定新浪微博》  |  关闭

杭州溜冰鞋

联系人:翁利文 QQ:85111570 手机:13758243050

 
 
 

日志

 
 

影响摩擦副摩擦相容性的材料因素  

2013-12-24 11:21:42|  分类: 技术 |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

钳入性:材料允许润滑剂中外来硬质颗粒钳入而防止刮伤或(和)磨粒磨损的能力。对金属材料而言,硬度低和弹性模量低者,钳入性就好,而非金属材料则不一定,例如碳石墨,弹性模量较低,但钳入性不好。滑动NSK外球面轴承通常用较软材料与较硬材料构成摩擦幅,一般用较软材料做轴瓦。http://www.skf-nsk-bearings.com/skf-bearings.html
Clamping materials allow lubricant clamping rigid particles at home and abroad to prevent scratches or (and) abrasive wear ability. For metals, and low hardness and elastic modulus of low, clamp into the sex is good, and non-metal materials are not necessarily, for example carbon graphite, lower elastic modulus, but poor clamping. Slide NSK spherical bearings are usually made with the soft and hard materials friction pieces, generally made with softer materials bearing.

磨合性:在轴径与轴瓦的磨合过程中,减小轴径与轴瓦加工误差、同轴度误差、表面粗糙度参数值,使接触均匀,从而降低摩擦力、磨损率的能力。http://www.skf-nsk-bearings.com/fag-bearings.html

摩擦顺应性:材料靠表层的弹塑性变形补偿滑动摩擦表面初始配合不良和轴的挠曲性能。弹性模量低的材料顺应性较好。

耐磨性:成副材料抵抗磨损的能力。在规定的磨损条件下,用磨损率或磨损度、磨损量的倒数来表示耐磨性。

抗疲劳性:在循环载荷下材料抵抗疲劳破坏的能力。在使用温度下,轴瓦材料的强度、硬度、抗冲击强度和组织均匀性对抗疲劳性是十分重要的。磨合性、钳入性好的材料,通常抗疲劳性差。http://www.skf-nsk-bearings.com/nsk-bearings.html

耐蚀性:材料抵抗腐蚀的能力。润滑油在大气中使用时将逐渐氧化,产生酸性物质,而且在大多数润滑油中还含有极压添加剂,它们都会腐蚀该NSK轴承材料,因此,NSK外球面轴承材料需要具备耐蚀性。

耐气蚀性:固体相对于液体运动的状态下,当液体中的气泡在固体表面附近破裂时,产生局部冲击高压或局部高温,将导致气蚀磨损。材料抵抗气蚀磨损的能力称为耐气蚀性。通常,铜铅合金、锡基NSK外球面轴承合金和铝锌硅系合金的耐气蚀性较好。

Running: the shaft and bearings break-in process, reduce shaft diameter, coaxiality error, processing error and pad surface roughness parameter values, expose evenly, thus reducing friction and wear rate.

Compliance of friction: sliding surface material on the surface of Elasto-plastic deformation compensation original misfit, and flexural properties of an axis. Low modulus of elasticity of materials compliance is good.

Abrasion resistance: Vice-material's ability to resist wear. Within the prescribed wear conditions, last in the amount of wear or abrasion, wear resistance.

Fatigue resistance: the material's ability to resist fatigue failure under cyclic loading. Using temperatures, bearing material for strength, hardness, impact resistance and fatigue organizations against the uniformity is very important. Break-in resistance, clamp into the good material, usually poor resistance to fatigue.

Corrosion resistance of the material's ability to resist corrosion. Lubricating oil when used in air will gradually oxidize and produce acidic substances, and most also contain extreme pressure additives in lubricating oils, which will corrode the NSK bearing materials, therefore, NSK bearing corrosion resistance of materials required.

Cavitation resistance of solid state relative to the fluid movement, when air bubbles in the liquid near a solid surface burst, impact local high pressure or localized high temperature will result in cavitation erosion. Ability of materials to resist cavitation erosion resistance of cavitation. In General, copper-lead alloy, Tin-base NSK bearing alloys and aluminium zinc Silicon series alloys better cavitation resistance.

  评论这张
 
阅读(122)| 评论(0)
推荐 转载

历史上的今天

在LOFTER的更多文章

评论

<#--最新日志,群博日志--> <#--推荐日志--> <#--引用记录--> <#--博主推荐--> <#--随机阅读--> <#--首页推荐--> <#--历史上的今天--> <#--被推荐日志--> <#--上一篇,下一篇--> <#-- 热度 --> <#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->
 
 
 
 
 
 
 
 
 
 
 
 
 
 

页脚

网易公司版权所有 ©1997-2017