With the rapid development of the crusher industry, crusher manufacturers are looking for new development and innovation ideas, and the wear-resistant parts of the crusher crusher hammer head have become a major target. For example, the hammer head of the hammer crusher is vulnerable to wear and wear, which is easy to cause serious wear in the working process, which will affect the working efficiency of the equipment. In order to strengthen the performance of the hammer head of the crusher, hammer manufacturers are constantly innovating. Choosing high chromium alloy material to cast crusher hammer can make the product more wear-resistant.
Crusher hammer is easy to wear parts, once the wear is serious will affect the efficiency of the equipment, so choose the hammer of high chromium alloy material. High chromium alloy has good wear resistance because of its great hardness and work hardening on the surface under great extrusion pressure or impact load. However, the crusher hammer made of high chromium alloy is not suitable for the crushing of any material. The hardness of low chromium alloy is such as the crushing of coal. The performance of high chromium alloy can not be fully played, and it will be very easy to wear like low hardness materials, resulting in the occurrence of short service life of the hammer.
It can be seen that the crusher hammer made of high chromium alloy also has advantages and disadvantages. When choosing the crusher equipment, users must choose the one suitable for themselves, so as to play its performance to a greater level and improve the working efficiency of the equipment.
There are many kinds of annealing methods for wear-resistant hammer castings, including complete annealing and incomplete annealing. What is the difference between the two methods?
The complete annealing of wear-resistant hammer is to heat the cast steel to a specified temperature, and then slowly cool it after complete austenitizing to obtain a nearly balanced structure. It is an annealing method to change the original structure and properties. Complete annealing is the most common annealing method to improve the microstructure of carbon steel and low alloy steel, or to soften it as far as possible to improve the plastic workability and machinability. If we only say annealing, we generally refer to complete annealing. Low carbon steel and hypereutectosis are not suitable for complete annealing. The hardness of low carbon steel castings after annealing is low, which is not conducive to cutting. The secondary cementite precipitation of hypereutectoid steel castings during heating and slow cooling annealing can significantly reduce the strength, plasticity and impact toughness of castings. The incomplete annealing of wear-resistant hammer is to recrystallize the microstructure of the castings of engineering steel, low-alloy steel and medium carbon structural steel by complete annealing, which makes the grain of the castings fine and the microstructure uniform, and makes the microstructure difficult to form.
