Improvement measures for plate hammer of impact crusher

Material Improvement: The original plate hammer made of high manganese steel can not carry forward its full production role in the mining crushing industry, so it is necessary to re-ｓｅｌｅｃｔ the material for plate hammer manufacturing. At present, multi-element high chromium cast iron has gradually replaced the quality of high manganese steel. Through reasonable improvement, the performance of plate hammer has been greatly improved, not only the production efficiency of equipment has been improved, but also the service life of plate hammer has been prolonged.

2. Structural improvement: Due to the brittleness of multi-element high chromium cast iron, it is necessary to stop improving the structure of plate hammer: 1. To change the square bolt hole which could cause the stress concentration of plate hammer into circular ｏｒ elliptical bolt hole, thereby increasing the cracking phenomenon of plate hammer in the use process; 2. Hongxing Heavy Industry will continue the longer plate hammer from the installation hole, and will not affect the breaking effect. On the premise of reserving installation clearance, it can increase the bending moment, reduce the size and shape requirements of the installation surface of the hammer, and make the hammer structure more stable in the process of rotor installation.

3. Improvement of foundry technology: In order to ensure that the plate hammer does not suffer from rust and oil stain in smelting, it is necessary to stop smelting and necessary inoculation and quality modification of the plate hammer formed by casting. In order to ensure that the plate hammer produced by casting has better wear resistance, it is necessary to stop shrinkage production according to the activity and shrinkage hole of the multi-element high chromium cast iron. Toughness and longer service life.