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Talk about the knowledge of hammer crusher

ren

Wide

2020-08-03 00:57:54 1108

Hammer crusher is a general of crushing equipment, its structure is simple, compact size, small weight, low power consumption per unit, high productivity, large crushing ratio, continuous and reliable work, and convenient maintenance and repair. The main work is on the hammer, and the knowledge of the hammer is what we must understand.

The main working parts of the hammer crusher are the hammer head, the liner, the rotor disc They wear faster during work, especially when the work object is very hard, wear faster, especially the most hard-working hammer. And when crushing materials with a water content of 12%, or more clay, the discharge grate The easy blockage of the strip reduces the productivity and increases the energy loss, which will accelerate the wear of vulnerable parts.

Because the collision process between the hammer head and the single particle material is extremely complicated, we carry out the collision process The following assumptions are that the collision between the hammer head and the material is an elastic positive collision. In the collision process, friction and wind resistance are ignored. The collision between the hammer head and the material occurs at the center of the hammer head collision, that is, the collision between the hammer head and the pin. The amount of recoil S0. When determining the quality of the hammer, on the one hand, it should be able to crush the material, and on the other hand, the hammer should not be excessively deflected. According to the relevant information, the deflection of the hammer is mainly related to the speed of the rotor. According to the crushing theory, to crush the material, the energy condition and the force condition must be met. The energy condition refers to the energy E produced by the quality of the hammer, which must be greater than or equal to the work A required to crush the material. The force condition refers to the hammer The impact force generated by the collision between the mass and the material must be greater than the force required when the material is crushed. Under normal circumstances, the impact force generated by the collision between the quality of the hammer and the material is much greater than the force required for the crushing of the material, so it is not considered here.

In terms of hammerhead material, high chromium manganese tungsten alloy is selected as the hammerhead material. After heat treatment, its metallographic structure is martensite primary carbide, small amount of granular secondary carbide, small amount of retained austenite , According to the production and operation test, its service life is equivalent to that of the 15Cr3Mo alloy hammer head in the United States, which is about 27 times that of the original alloy steel hammer head. Therefore, the high chromium manganese tungsten alloy is currently more ideal in engineering.



The main products produced by Henan Gold Mine Machinery include jaw crushers, hammer crushers, impact crushers, impact crushers, cone crushers, compound crushers, fine crushers Heavy-duty crushing equipment such as machine, single-stage crusher, roller crusher, mobile crushing station, belt conveyor, sand and gravel production line, linear vibrating screen, circular vibrating screen, sand washing machine, vibrating feeder, etc.