The difference in wear resistance between counterattack crushers at home and abroad is surprisingly large?

The counterattack crusher is divided into specifications based on the diameter and effective length of the rotor. According to the China Machinery Industry Platform editor, there is actually a certain gap between domestic and foreign counterattack crushers, mainly in terms of wear-resistant materials and product design.

1. Wear resistant material

As a secondary or tertiary impact crusher, its main wear-resistant component, the plate hammer, is made of high chromium cast iron when crushing hard materials. China's high chromium cast iron standard (wear-resistant white cast iron standard) is suitable for small parts. The quality control standards for large parts, such as hundreds of kilograms of plate hammers, are not complete, and the host manufacturer does not manufacture wear-resistant materials, so the quality of wear-resistant parts such as plate hammers is easily out of control. Moreover, many casting production enterprises lack the necessary quality control conditions. Therefore, under the same working conditions, the service life of vulnerable parts at home and abroad often differs by twice.

2. Product Design

The main engine quality of domestic and foreign products of the same specification of impact crusher is similar, however, foreign products have smaller shell quality and larger rotor and impact frame quality. However, the quality of the casing and rotor of domestic products is large, while the quality of the counterattack frame is relatively small. Due to the small mass and moment of inertia of the rotor, the power of the dragging motor is also small, especially when crushing hard rocks and obtaining small particles, the processing capacity is low.

In addition, there are significant differences in the design of counterattack chambers, adjustment of counterattack plates for different particle sizes, and replacement of plate hammers between domestic and foreign products. Poor design in these areas not only affects product quality, but also brings many inconveniences to use and maintenance.

The above is the complete introduction of the gap between domestic and foreign impact crushers by the editor of China Machinery Industry Platform, hoping to give you some understanding.