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Factors Affecting the Service Life of Hammer Crusher

ren

Gwynne

2020-11-13 12:57:54 1057

The hammer crusher is a commonly used crushing equipment in the cement, chemical, metallurgical, power and other industries. It is used to crush medium-hard materials, such as limestone, coal and coke. The hammer is the main wear-resistant part of the hammer crusher, mainly made of high manganese steel. It is produced, but there is still a phenomenon of greater wear and short life of the hammer head, so what factors will affect the life of the hammer head

1 The structure of the hammer head Design and manufacturing quality

First of all, of course, the structural design and manufacturing quality of the hammer head itself, because the structural design and geometric shape of the hammer head have a lot of mechanical properties and internal metallographic structure after heat treatment. The impact of the hammer, especially for hammers with relatively large thickness and size. When there are different degrees of defects in the interior or surface of the hammer, the hammer may break, and this phenomenon often occurs in the early stages of use, so the hammer The production of the hammer must have a reasonable casting and heat treatment process.

2 The size and hardness of the crushed material

The hammer is in the production process The material that has more contact is the material. The larger the material lumpness, the higher the toughness requirement. The higher the material hardness, the higher the hardness of the hammer material. Therefore, when choosing the hammer, you must choose the right one. This will not only improve the efficiency of crushing, but also extend the life of the hammer.

3 Technical parameters of the crusher

Technology of the crusher The reason why parameters affect the service life of the hammer is mainly due to the power and speed of the rotor. The power and speed of the rotor are related to the degree of impact hardening of the hammer. If the impact hardening of the hammer is good, its service life will be prolonged, and vice versa. , It will decrease.

Hammer crusher parameters

Model specifications



Feed size
(mm)

Discharge
Granularity
(mm)

Production capacity
(m3h)

Motor power (kw)

Total weight (t)

Overall dimensions
(length, width and height)(mm)

Pc400300

200

25



510

11

0.8

900670860



Pc600400

250



30

1022


22

2.26

120010501200


Pc800600

250


35

1840




55

4.8


131011801310

Pc1000800


350

35

2550



75

5.9



160013901575

Pc10001000



350

35

3055

90

8

180015901775

4 Adjusting the internal clearance of the crusher

here refers to the rotor body The gap between the grate bar and the hammer head of the counterattack plate. The size of these gaps is related to whether there is accumulation of material near the grate bar and the safety door. If the accumulation of material exists, and the hammer cannot press the accumulated material from the grate bar, the hammer The head will be severely worn, and if it goes on for a long time, the life of the hammer head will be reduced.