1.How Often Does The Shot Blasting Machine Change Blades?
Shot blasting machine blade in the shot blasting machine as the pivot component of the shot blasting machine, its quality and service life directly depend on the blade. Because the blade is in a high-speed rotating impeller when it works, it must bear the wear of the steel match pellet abrasive and the high-speed shot erosion erosion. Under these two forms of wear, whether the blade works well depends on the blade Material.
2.How long Is The Life Of The Shot Blasting Machine Blades? How To Decide Whether To Change?
At present, there are many types of wear-resistant materials on the market, mainly high-manganese steel, medium-manganese ductile iron, and low-alloy white cast iron. The service life of these three special cast irons is: 50-120 hours for rare earth special cast iron, 120-250 hours for medium chromium cast iron, and 500-1000 hours for high chromium cast iron.
Worn or cracked blaster blades cause vibrations when the impeller rotates at high speed. Therefore, the intact condition of the blade should be checked frequently, and the defective blade should be replaced in time. In order to ensure the stability of the shot blaster, the blades must be replaced in pairs.
The blades that do not meet the requirements must also be replaced at the same time to obtain a good dynamic balance. If it is suspected that a blade problem is causing the head to malfunction, all blades need to be replaced.
3.How To Improve The Abrasion Resistance And Service Life Of The Blades?
Although low alloy white iron can adapt to the impact under low load, but its service life is extremely short, it is not an ideal material; high manganese steel belongs to the austenitic structure steel type, which is prone to work hardening under high impact, so it has certain Wear resistance, but it cannot exhibit good wear resistance for impact under low and medium stress; high chromium cast iron is the third generation of wear resistant material after high manganese steel, because its structure contains the ideal m7c3 eutectic carbide. Moreover, the martensitic structure can be easily obtained, and compared with other wear-resistant materials, it shows greater superiority, so it is widely used.
However, high-chromium cast iron is relatively brittle, easily fractured and broken under high impact, and it is difficult to grasp its formation mechanism in actual production to obtain an ideal matrix structure.
In response to this situation, the company improved the conventional blade production process, using 20bar vacuum gas quenching, nitrogen deep cooling and deep processing, breaking through the 40-year-old production process barrier of the wear-resistant blade, improving the blade function, and more Greatly improved the abrasion resistance and service life of the blade.
Eternal Bliss Alloy Casting & Forging Co, Ltd.
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