In the design, movable jaw plate and fixed jaw broken teeth should peak to valley teeth. Thus, in addition to the crushing of materials squeeze effect, there are bending, the material is easier to break. In order to enhance the life of broken plates, small plates designed crusher broken down into a symmetrical shape, after a moment can turn around and use the Department of wear; a large jaw crusher crushing plate designed to mutually symmetrical pieces, so wear can post Use the broken board swap. Broken plates can choose white cast iron materials. White Iron greater hardness, good wear resistance, easy to source cheap; drawback is brittle, easily broken, life is short. In order to improve the life of the breaker plate, the material with the above 12% manganese steel manganese better, commonly used ZGMn13. Better toughness manganese crusher, although not high hardness (about 210HB), however, because it has the characteristics of work hardening, under pressure will continue to be strengthened jaw crusher, wear it at work constantly and constantly strengthen cone crusher, it can not be used until worn to be scrapped. Manganese steel cast after going through a breaker plate water toughening treatment, the operation is substantially the same as the quenching water toughening treatment, i.e., the casting out of the manganese steel breaker plate heated to 1000 ~ 1100 ℃ quickly cooled in water. After the water treatment can be tough uniform microstructure, and microstructure fixed, avoid the use of naturally occurring in the phase transition leaving poor performance. Disadvantages manganese is more expensive, but life, cost and other aspects of the overall consideration crusher manufacturers, ZGMn13 than white cast iron long life, low cost. Jaw crusher has a crushing ratio, even granularity, simple structure, reliable operation, easy maintenance, operating costs and economic characteristics. PF-I series impact crusher can process the side length of 100 to 500 mm below the material, its compressive strength up to 350 MPa, after having broken than large, broken material cubic particles, etc; PF-II series crusher machine, suitable for crushing hard materials, such as cement limestone crushing, with production capacity, the expected size of the advantages of small mobile crusher _ Xin Li Heavy preferred (certified) _ Xuyi crusher by Gongyi City Xin Li Heavy Machinery Manufacturing Limited. Gongyi City Xin Li Heavy Machinery Manufacturing Co., Ltd. (www.gyxljxc.com) is Zhengzhou, forgings leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Li Xin Heavy Industries in leadership with the staff warmly welcome all inquiries negotiations to create Xin Li Heavy a better future.