Hammer improvements of impact crusher
Source:www.smallcrusher.cn Author:GreatWall Views:
Impact crusher achieves stone broken by the role of hammer and impact plate,therefore, the hammer is the most adequate contact to material and is more susceptible to wear and tear parts. In order not to affect the crushing effect devices, and extend the life of the board hammer, many manufacturers have invested in research to improve the board hammer.
The material improvement
The original material is made of high manganese steel hammer which can not play a full role in the production of mining crusher industry. Therefore, it needs to re-select the board hammer manufacturing materials. Currently, diverse high chromium cast iron has gradually replaced the high manganese steel, reasonable improvements greatly improving the performance of the board hammer, which not only improves the production efficiency of the equipment, but also extend the life of the board hammer.
The structural improvement
As diverse high chromium cast iron is brittle, it has the need for improved board hammer structure.
1.The original square bolt holes may cause stress concentration,so change hammer to round or oval bolt holes to reduce the hammer in the course of the cracking phenomenon;
2.hammer the longer disconnected from the mounting hole in the middle, and without prejudice to the crushing effect premise aside mounting clearance, decrease the moment, reducing board hammer the size and shape of the mounting surface action required to make the board hammer structure is more stable during the installation of the rotor.
The casting process improvement
Conducted feeding high chromium cast iron production based on multivariate fluidity, shrinkage, etc., in order to ensure that the casting out of the board hammer with superior wear resistance, toughness and longer service life.
Board hammer of impact crusher improvements are based on the specific application and the consolidation of production capacity proposed, with strong applicability in the actual production work.