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Casting methods for brass castings and how to avoid quality problems
- Jul 16, 2018 -

In the specific material of the casting, there is copper material, so it can obtain a casting of copper casting. If it is brass in copper, then the casting is a brass casting, through the casting process. Come and get. Then, in order to let everyone have a deep understanding and understanding of brass castings, the following description of the castings will be carried out, and the purpose of correct and rational use will be achieved.


1. What are the specific types of brass in brass castings?

Brass in brass castings, from a professional point of view, refers to a copper alloy with zinc as the main alloying element, which is called brass. If it is a copper-zinc binary alloy, it is called ordinary brass. If a small amount of other elements are added on this basis, it can constitute a ternary, quaternary or multi-element brass, which is called special brass. Therefore, brass in brass castings can be divided into ordinary brass and special brass.


2. Casting brass, why can it be widely used on brass castings?

Cast brass, which can be widely used on brass castings, is because it has good mechanical properties compared to tin bronze. In addition, since there is a large amount of zinc in the cast brass, the cost is low, and it can be widely used in brass castings, and the casting has good performance and use effect.


3. Casting process of brass castings

Brass castings, which have different properties, are mainly expressed in melting point, fluidity, solidification shrinkage, volatility, hot cracking tendency and sensitivity to gases. Therefore, The corresponding casting method is also different. However, if summarized, then the casting method mainly includes die casting, sand casting, centrifugal casting, continuous casting and investment casting.


4. How do brass molds avoid shrinkage, cold cracking and deformation during the casting process?

Brass castings, if they are improperly operated or mishandled during the casting process, are prone to shrinkage, cold cracking and deformation. Therefore, in order to avoid these problems, some effective measures should be taken to achieve the purpose. it's for:


Use a good performance sand core to reduce the casting stress, so as to avoid cracks, deformation and other issues. A riser is provided during the casting process to enhance the feeding. In the gating system, the slag collection and slag blocking structure should be set to allow the liquid flow to be smoothly filled. In addition, the pouring temperature should be appropriate to prevent liquid shrinkage and vaporization.