Home > Exhibition > Content

Casting process requirements for pump valve castings and cleaning procedures

May 23, 2018

With the continuous development of science and technology, the foundry industry is booming. To a certain extent, it will effectively prepare different casting methods for different casting methods. The casting preparation of pump valve castings effectively includes modeling material preparation and modeling. Make two core tasks.

The pump valve castings effectively use various raw materials used for molding and core making in sand casting, such as foundry sand, sand binder and other accessories, as well as molding sand, core sand, and coatings formulated by them. The task of materials and modeling materials preparation is to select suitable raw sand, binder and auxiliary materials according to the requirements of the castings and the nature of the metals, and then mix them into certain sand and core sand with certain performance according to a certain proportion. Commonly used sand mixing equipment include roller wheel type sand mixer, counter flow type sand mixer and continuous sand mixer. The latter is designed specifically for mixed-chemical, self-hardening sands, with continuous mixing and quick mixing.

The core and shape of the pump valve casting are to a certain extent based on the requirements of the casting process, determine the modeling method to a certain extent, carry out the operation on the basis of ready-made modeling materials, the precision of the casting and the total production. The economic effect of the process depends mainly on this process. In many modern foundry workshops, modeling and making cores have been mechanized or automated. Commonly used sand moulding core-making equipment includes high, medium and low pressure moulding machines, air punch moulding machines, boxless injection moulding machines, cold core box core machines and hot core box core machines, and coated sand core machines.

After the valve castings are taken out of the cast cooling molds, they have gates, risers, metal burrs, and creases. Sand castings also adhere to sand, so they must be cleaned. The equipment that performs this kind of work includes grinding machine, shot blasting machine, pouring riser cutting machine and so on. Sand casting sand removal is a process with poor working conditions. Therefore, when selecting a molding method, it should be considered as much as possible to create convenient conditions for sand falling. Some castings have to be post-treated with castings due to special requirements, such as heat treatment, shaping, anti-rust treatment, and rough processing.

The process of pump valve casting can be divided into three basic parts, which can be effectively divided into casting metal preparation, casting preparation and casting processing. Cast metal refers to the metal material used for casting in foundry production. It is an alloy composed of a metal element and added with other metal or non-metal elements. It is customarily known as a cast alloy and mainly consists of cast iron. Cast steel and cast non-ferrous alloys.http://www.dmgcastings.com/