As the core component of crushing equipment, the quality and performance of crusher hammer directly affect the crushing efficiency and equipment life. The casting process is the key link in the production of high quality hammer, which involves many aspects such as alloy ratio, casting process and solidification state. This article will in-depth analysis of the casting process of the crusher hammer to help you understand the production process of high-quality hammer.
1. Alloy ratio: determines the basis of hammer performance
The alloy ratio of hammer head is the key factor affecting its wear resistance and toughness. Common alloying elements include high manganese steel, high chromium cast iron and low carbon alloy steel. High manganese steel is suitable for crushing environment with high impact force because of its good toughness and work hardening characteristics. High chromium cast iron is an ideal material for hammer head due to its high hardness and excellent wear resistance. By precisely controlling the proportion of alloying elements, the performance of the hammer head can be optimized to achieve the best balance between wear resistance and toughness.
2. Casting process: precise control to ensure quality
The casting process is the core of hammer casting. First, the alloy material needs to be heated to a molten state, usually high chromium cast iron melting temperature of 1480 ° C. In the casting process, temperature control is crucial, too high or too low casting temperature will affect the quality of the hammer. For example, too high a casting temperature can lead to excessive shrinkage and sticky sand problems. In addition, the reasonable casting speed and sequence also have an important impact on the quality of the hammer. Adopting the principle of sequential solidification can effectively prevent the production of shrinkage cavity and shrinkage porosity.
3. Solidification state: the key to affecting the internal structure of the hammer head
The solidification state determines the internal structure and performance of the hammer. During the solidification process, it is necessary to ensure uniform cooling of the metal liquid to avoid thermal stress and cracks. The temperature distribution of castings can be controlled and the ideal solidification sequence can be achieved by reasonable arrangement of the inner runner, use of cold iron, subsidies and other technological measures. For example, the riser at the thick wall can provide enough metal liquid to the casting to prevent the production of shrinkage holes and shrinkage loosening.
4. Composite casting process: Innovative method to improve hammer performance
In order to further improve the performance of the hammer, the composite casting process has been widely used. The composite casting process includes insert casting and double liquid bimetal composite casting. The inlaid and cast composite hammer head is made of different materials respectively, and then the two are combined by casting. Double liquid bimetal composite casting is to pour two different metal liquids into the same mold successively to form a composite structure. This process can give full play to the advantages of different materials, so that the hammer head has high hardness, and the handle has good toughness.
um up
The casting process of crusher hammer head is a complex and fine process, involving many links such as alloy ratio, casting process and solidification state. By precisely controlling the proportion of alloying elements, optimizing the casting process and solidification state, high-quality, high-performance hammer heads can be produced. The innovative application of the composite casting process further improves the wear resistance and toughness of the hammer head, making it play a greater role in the crushing equipment. Choosing the right casting process and material is the key to ensure the service life and crushing efficiency of the crusher hammer.
Post time: Mar-20-2025