This article introduced the double pin roll breaker\'s survey and the tooth profile and the roller tooth arrangement design situation analysis briefly.

Through the research on working condition and failure analysis of gear rollers and comb boards of large sintering-crushing machines,a sort of high chromium cast iron wear-resistant alloy was developed independently.

NC Processing of CTC Rolls of Broken Black Tea Machine and Statistical Research for Their Pitch Error;

By means of the χ 2 test and modeling, the pitch errors of CTC rolls have been statistically studied, and on the basis authors quantitatively analyze the rolls machining precision.

There exist air leakage phenomena in the original tooth roll labyrinth seal of pellet shaft furnace The new type of disk seal is used to substitute the labyrinth seal and the lubricating system are reformed and the strict operation and maintenance system are established Therefore, the air leakage problem of tooth roll can be dealt wit

As a core spare part of the pellet shaft furnace, the tooth roll has been widely used in most iron-making plant, yet its structure and cooling problem are the key factor effecting working life.

Apricot Xinghua Washery Preparation of the workshop process of transformation, with 2PGL-400 × 750 high-tenacity double roll crusher replacing two jaw crushers, resolved into the washing transfinite granularity, and introduce 2PGL-400 × 750 high-tenacity double roll crusher working principle, structure, main characteristics and technical indicators, after the installation of cost-effectiveness.