铬铁矿粉具有较好的低温和高温增摩效果,也能起到清扫对偶的作用。添加于橡胶能起到很好的增摩作用,而不刮伤对偶和产生噪音。在摩擦材料中常用的铬铁矿粉的cr203,含量为25%-40%,cr203含量越高,增摩效果也越大。使用时应注意控制其用量和粒径。合宜的用量应不超过7%,粒径细度在200目以上。过多的用量和过粗的粒径固然能提高摩擦系数但也会导致摩损明显增大。
chromite
chromite ore fines has good increasing friction effect in low and high temperature, plays a dual role too. added to
rubber can play a good role of increasing friction, and do not scratch the duality and noise.
in the friction material commonly used in chromite fines cr203, content of 25%-40%, the higher cr203 content, increasing friction effect is bigger. use should pay attention to controlling the amount and particle size.
proper dosage should not exceed 7%, particle fineness more than 200 projects. excessive dosage and coarse grain size can improve
the friction coefficient but also will cause friction increases obviously.chromium is one of the important strategic material, because it has
a hard, wearresistant, high temperature resistance,
corrosion resistance and other characteristics, has been widely used in metallurgy, refractories and chemical industry.
产品技术指标 technical indices
项目project |
单位unit |
指标technical indicators |
比重 density |
g/cm3 |
4.3-4.6 |
莫氏硬度 mohs’ hardness scale |
|
5.5 |
熔点 melting point |
℃ |
1353 |
粒度 size |
mesh |
200-325 |
cr2o3含量 cr2o3 content |
% |
25-40 |
"铬铁矿"的铬含量≥为50(%),产地是越南