The main characteristic of high manganese steel (Mn 13) hammerhead is that under the action of large impact or contact stress, the surface layer will quickly produce processing hardening, its processing hardening index is 5-7 times higher than other materials, good toughness, good technology, low price, and the wear resistance is greatly improved. However, the hammer head of the high manganese steel crusher has high requirements on the overall performance of the crusher. If the physical impact force is not enough or the contact stress is small in the actual work, the surface can not quickly produce processing hardening, so as not to play its due wear resistance. Therefore, it is hoped that the majority of customers should choose according to the actual parameters of the equipment before use, and when necessary, the equipment can be transformed to make it play the maximum economic benefits
High manganese steel hammer high manganese steel is hammer traditional material is not wear-resistant, the service life is short, broken limestone
hammer generally can work 2-3 months, under some working conditions, the use of less than a week, high fierce steel hammer is not wear-resistant, one is the hammer wear is given priority to, the second is the hammer crusher hammer in the process of operation by the impact is not big, make the high manganese steel hammer processing hardening effect is not significant. The greater the weight of the hammer head, the greater the impact force received, and the more significant the strengthening effect is. Therefore, as a material of a large hammer head, reinforced high manganese steel is still an optional material. Add Cr strengthening high manganese steel hammer, in crushing iron ore, the service life of yu hammer 50% higher than ordinary high manganese steel, also can use manganese content of 17% -19% of high manganese steel, and add Cr, Mo elements, improve its yield strength and initial hardness, also got the good use in the actual production effect.
Manganese steel hammer in order to not increase the price of the hammer, and can achieve the use of ZGMn13 hammer, according to the manganese reduction, austenite stable decline, so as to improve the theoretical basis of austenitic deformation hardening effect, yu gong company developed the manganese steel hammer (manganese content of 5% -9%) its actual service life than ZGMn13 more than 50% increased, has achieved good use effect. The biggest advantage of manganese steel hammer head in casting is that it has its magnetism, which can remove the iron scraps in the ore through magnetic separation to ensure the sintering quality of ceramic products. Because of the lack of magnetic property, the grinding chips are mixed in the sodium stone powder, which will affect the sintering quality of ceramic products. The service life of manganese steel hammer is increased by more than 60% than ZGM13.
Low alloy steel hammer head high chrome cast iron composite hammer head, although has a high service life, but its manufacturing process is complex, at the same time, the iron block is strictly prohibited to enter the crusher, generally required to feed in the front end of the secondary iron suction device. All along, the company has developed a variety of multiple low alloy steel hammerheads, its matrix tissue has martensite, bainite or martensite plus besite composite tissue. Under the same working conditions, its service life is at least twice than that of high manganese steel hammerhead. Hammerhead in the use of different degrees of impact wear and cutting wear, the use of the material of high toughness and high hardness requirements, but as we all know, toughness and hardness is a pair of contradiction. Therefore, in the actual selection of material, we must fully understand the working condition of extreme wear mechanism, reasonable selection of material.
