Crusher hammer is divided into several categories? Which is the most abrasive?

Crusher hammer plays an important role in various fields, according to the different types of crushing species, crusher hammer also has different classifications. The following is a brief introduction to the characteristics and classification of the crusher hammer head.

The crusher hammer head is one of the core parts of the hammer crusher, arranged on the hammer shaft of the crusher rotor, and directly strikes the material during the operation of the hammer crusher.

Crusher hammer is divided into what categories?

1 Forging hammer head
The hammer head of the forging crusher is suitable for crushing pebbles, coal gangue, limestone, etc. The hammer head of the forging crusher is made of high quality train wheel steel (material 65Mn, good impact resistance, strong toughness, good wear resistance, not easy to break). The metal billet is repeatedly forged by forging machinery to make it deformed to obtain a certain mechanical properties, a certain shape and size. After special quenching heat treatment method, the working area of the hammer head is guaranteed to get high hardness. High wear resistance.

Through forging, the defects such as as-cast loose produced in the smelting process of metal can be eliminated, and the microstructure can be optimized. At the same time, the mechanical properties of forgings are generally better than those of castings because the complete metal flow line is preserved. Forging hammer head is favored by the majority of users because of its cheap price, economic and durable characteristics.

2 High steel hammer head
Alloyed high manganese steel wear-resistant hammer, reliable quality, wear resistance is three times of the traditional high manganese steel, the crusher hammer is widely used in the domestic new dry cement production line supporting the large limestone crusher. With the continuous development of wear-resistant materials, high manganese steel has gradually become unsuitable for the development of modern casting industry.
It is replaced by chrome-molybdenum alloy steel, high-chromium cast iron and nickel hard cast iron. However, the high toughness of high manganese steel is unmatched by other wear-resistant materials. High manganese steel crusher hammer toughness is good, good process, low price, its main feature is that under the action of greater impact or contact stress, the surface layer will quickly produce work hardening, the work hardening index is 5-7 times higher than other materials, wear resistance is greatly improved.
However, the hammer head of high manganese steel crusher has higher requirements for the overall performance of the crusher, and if the physical impact force is not enough or the contact stress is small in the actual work, the surface can not be quickly produced work hardening, so as to play its due wear resistance. Therefore, it is hoped that customers should be selected according to the actual parameters of the equipment before use, and the equipment can be transformed if necessary to maximize its economic benefits.

3 High chrome hammer head
High chromium alloy crusher hammer head hardness is excellent, is a high-quality wear-resistant material, in the support of the hammer frame of the fine crusher (third generation sand making machine) and impact crusher has been widely used, but the high chromium alloy toughness is poor, in the absence of the support of the hammer frame is prone to fracture.

High chromium composite hammer, that is, the hammer handle uses high manganese steel, the hammer working area uses high chromium alloy, the two are combined, so that the hammer head has high hardness, and the hammer handle has high toughness, give full play to the respective advantages of the two materials to overcome the shortcomings of a single material, to meet the performance requirements of the hammer head.
Especially suitable for crushing high hardness materials, such as quartz stone, basalt and so on. However, the traditional manufacturing process is complicated, the process requirements are more strict, and the price is higher.

4 carbide hammer head
Carbide hammer head compared with other materials, has higher hardness, bending strength and impact, thermal fatigue resistance, good thermal hardness, low cost and other characteristics, to solve the high manganese material prone to crack, welding, crack, falling and other problems.
1, ultra-high wear resistance, is more than 20 times of high manganese steel hammer head.
2, with good resistance to mechanical shock, thermal shock performance.
3, a wide range of application, basically can be adapted to all crushing industry.

5 Bimetal hammer head
The crusher hammer with two different metal liquid pouring is a bimetal hammer, and the bimetal hammer has hardness and wear resistance while ensuring the toughness of the hammer handle.

The temperature of the bimetal hammer quenching is crucial, generally according to the thickness of the parts wall to choose the appropriate quenching temperature, the higher the quenching temperature, the higher the hardenability, so in the hammer production must develop a reasonable casting and heat treatment process.

Crusher hammer head casting effect
If the crusher hammer head casting is not proper, it will cause defects such as pores. When the casting system of the hammer head of the crusher is not designed correctly, the metal liquid will be swirled into the gas, resulting in the formation of pores. When casting hammer exhaust is poor, the gas can not be discharged from the mold will also lead to the generation of pores, which requires us to strictly control the pouring temperature when pouring, and can not be interrupted evenly when pouring, in order to facilitate the casting exhaust, you can use inclined pouring.
Crusher hammer after use will appear different degrees of wear, due to low impact operating conditions, hammer surface work hardening effect will also be intensified, hammer wear refers to under the action of mechanical force, metal hammer surface gradually out of the parent, resulting in changes in the performance of the hammer, wear on the hammer life of the greatest impact.
How to extend the life of the crusher hammer?

1. In the working process of the crusher, the material is evenly added to the crushing chamber to avoid single-sided wear of the hammer head.

2. When the nature of the material changes, even if the working parameters of the crusher are changed, the wear of the hammer head is avoided because of the material.

3. When installing the hammer head, it should be stable in contact with the machine surface.
At present, the main types of hammerheads in the domestic market are forged hammerheads, high manganese steel hammerheads, high chromium alloy hammerheads, etc., but these hammerheads have insufficient wear resistance and short service life, but the bimetal hammerheads of North High Heavy Science Co., LTD., use liquid liquid combination to make two kinds of metal liquid pouring at the same time, the hammerhead part has toughness, the hammerhead part has hardness and wear resistance, which can greatly improve the service life of the products.