The Study Of The Material Of Super Fine Crusher Wear Parts
In recent years, many cement enterprises in order to improve the cement mill when the output, reduce power consumption, in the mill before the mouth of the increase in super-fine crusher, with the use of high-quality grinding machine, In the grinding head pre-grinding, and achieved good results’. However, the wear and tear of the ultra-fine crusher plate hammer in the work process easy to wear, so that grinding mill grinding grain size instability, ultra-fine crusher prone to vibration phenomenon, and plate hammer life is short, downtime replacement time, production On the eager to improve.
Working Principle Of Super Fine Crusher
Abrasive by the hopper into the crusher cavity into the body, falling into the high-speed rotation of the shaft connected to the rejection of the disc, the abrasive by throwing the material plate high-speed cast to the inner wall of the counterattack plate, after the impact of the rebound back to hammer area, By the hammer hammer hammer, so that the abrasive broken. The grinding speed of the machine is 880 r / min, and the composition of the abrasive is clinker, coal petrol and gypsum respectively 80.5%, 15% and 4.5%, of which the compressive strength of clinker is 50-60MPA. Fine crusher plate hammer by high speed, high hardness abrasive repeated impact, in the abrasive broken at the same time on the plate hammer wear. Thus, Super Fine Crusher Wear Parts material requires good toughness and high abrasion resistance.
Super Fine Crusher Wear Parts Material Choice
High chromium cast iron as the third generation of anti-wear materials, in the international community has been widely used in machinery manufacturing, metallurgy, mining, building materials and other industrial sectors of the crushing equipment. Such as ball mill parts, crusher hammer, blow bars, shot blasting machine blades, rolling mill parts. Especially, America company-Clmax had success to invite the material “15Cr3Mo” Alloy,which have strong wear and toughness. Due to the high price of “Mo”, this material have its limited in China. However, our country have enough “W” and “Mn” elements,.”W”elements have similar to “Mo”,Its adhesion to carbon is slightly lower than “Mo”.”Mn” elements has an effect of promoting the pearlite to austenite transformation, and the cooling of the austenite to increase the tendency of martensite.So we choose the material is:
Alloy’s Heat Treasure
After quenching the alloy, the low temperature tempering treatment to eliminate the residual stress of the casting, the quenched martensite into tempered martensite to improve its impact toughness. Heat treasure: