For a long time, a sintering plant WISCO burning plant combustion of solid particle size effects sintering is one of the key production. By the end of 1992 investment of over 90 million of the coarse broken system, despite a
Determining the effectiveness of, but because counterattack board and hammer-wear, Hammerhead 2 h after the failure of work, not only by tender has been less than expected size assessment criteria (<3 mm 85 per cent), the impact of fragmentation effect, and
Rough broken system that can not give full play to the role of impact crusher operating rate. In order to solve hammerhead wear problem, we must develop a new wear-resistant material hammer to raise their life.

First, the choice of wear-resistant material

The Hammerhead very poor working conditions, high speed work. Greater impact wear Hence, in accordance with the above conditions of service and saliva first major failure mode (wear, fracture), the material choice
Consider two points: the availability of suitable hardness and wear resistance of materials; good toughness, and to prevent their functioning in the process of fracture.

Medium impact in the working conditions under bear squeeze wear abrasion-resistant material matrix organizations should be: to quench surface martensite and hard alloy carbide particles formed to resist the grinding media
Indentation, cutting. Interlayer is martensite and pearlite, and bainite for internal ferrite and pearlite mixed organizations, to avoid the fracture.

Optimization through many times, and through appropriate heat treatment process with applicable to the successful development of counter-breakers use of new materials Hammer - Rare Earth Cr-Mn steel hammer copper.

Second, the rare earth Cr-Mn steel hammer copper capacity test

Testing process used to hammer installed three sets of tests, a new counterattack on the 2nd in the hammer crusher use. 10 h after the operation installed turnover, turnover 10.5 h after running off. The second and third sets installed for use, the use of fully return more than 10 h, after turnover to continue to use more than 10 h results. Its life is the high manganese steel hammer five times.

Hammerhead life as the extension of a t improve coke powder particle size, thereby reducing the solid fuel consumption and improve the quality of sinter.