The development of the crusher has always been the pillar of the application of new wear-resistant materials. In 1882, the first high manganese steel, the water toughness treatment, in the high impact load and high extrusion stress due to crystal deformation and other structural changes caused by surface hardening, Brinell hardness HB up to 500, while the center still Maintain good impact toughness. Commonly used in jaw broken jaw plate, cone broken broken wall, rolling mortar wall, hammer broken hammer, ball mill liner, high manganese steel wear parts is still the most important as a broken wear-resistant materials, Common common are Mn13 and Mn18.crusher spares

With the development of the crushing equipment industry, more and more problems are emerging, such as the expansion of the field and the durability of equipment requirements, the continuous development of the industry on the wear-resistant materials put forward higher requirements. 1930 or so appeared in the hard nickel cast iron, hardness up to HRC55-60, as the second generation of wear-resistant materials, because too brittle, it can only make small parts, such as gravel cleaning machine spiral blade board, and China's nickel , So little application. More than a few years later than the hard nickel cast iron cast iron is known as the third generation of wear-resistant materials, in its tough martensite matrix, the distribution of hard chunks of a carbide and a certain amount of dispersion Carbide, when the chromium content of more than 10%, the occurrence of carbide (Fe, Cr) 7C3 type. Vickers hardness up to HV1300-1800, is currently mainly used in counter-crusher plate hammer and hammer broken hammer. I produced high chromium cast iron according to the chromium content is divided into Cr18, Cr26 two, Shanghai Zhentuo Machinery Co., Ltd. production of anti-broken high chrome plate hammer are used Cr26, high chromium plate hammer main components: C content: 2.5 -3.5 Cr content: 23-33 normal hardness: 58-63 and then according to the needs of users, high chromium plate hammer components by adding molybdenum (Mo), nickel (Ni), so that high chromium plate hammer to achieve the best effect. On the basis of a certain basis, the product is mainly in the process, Sichuan Park are machinery manufacturing limited liability company has more than 30 years of production experience, the quality of the production of high chromium plate hammer than the average manufacturers are wear 20% the above.