News Center


31

2023

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05

Valve casting production process and its application fields


Valve castings refer to valve accessories produced by casting processes, used for sealing and control under certain pressure, temperature, and medium environments. Valve castings are usually made of materials such as cast iron, steel, and stainless steel, and different production processes and molds are used according to different needs.

Valve castings refer to valve accessories produced by casting process, which are used for sealing and control under certain pressure, temperature and medium environment. Valve castings are usually made of materials such as cast iron, steel, stainless steel, etc., and different production processes and molds are used according to different needs.

 Valve casting

Sand mold


Sand casting is a common casting process, mainly used for the production of stainless steel and cast iron valve castings. Sand casting has low cost, but the production cycle is long, and it is not conducive to achieving high-precision valve casting production.


Investment casting


Investment casting is an excellent casting technology, suitable for producing castings with complex structures. In investment casting, the production of fine ceramic molds results in high precision and smooth surface effects for valve castings.


Low pressure


Low-pressure casting is a casting process that is produced through closed casting equipment. Low-pressure casting can achieve high precision, high density, and high strength requirements for valve castings, and the early mold preparation is simple.


High pressure


High-quality casting process, suitable for large-scale production of castings. High-pressure casting does not require the one-time production of complex composite molds, has low cost, and is suitable for scenarios where the number of castings is large but the production cycle is short.


CNC machining


CNC numerical control machining is a digital grinding process suitable for the processing of complex workpieces. CNC machining is used in the production of valve castings, which can improve production efficiency and reduce production costs. With the support of modern production equipment, CNC machining has become an indispensable part of the valve casting production process.


As an important part of the industry, valve castings play a vital role in different production fields. The lack of meticulous planning and the implementation of civil engineering discipline in its production process will affect product quality and the actual use of valve castings. Therefore, manufacturers need to understand the performance requirements of valve castings in as much detail as possible during the production process, so as to select the most suitable casting process. At the same time, manufacturers need to strengthen supervision, strictly implement production standards, and ensure that the quality of valve castings meets user requirements.


Valve castings are an important part of valves, and their quality is directly related to the use effect and life of the valves, but valve castings are prone to some problems during the production process.


1. Defects caused by non-standard casting process.


2. Substandard raw materials cause quality problems.

3. Rust and oxidation on the surface of castings lead to losses.

4. Improper mixing of alloy components causes the casting to fail to meet the strength requirements.


Therefore, in order to avoid these defects in valve castings, it is necessary to strengthen quality inspection during the production process, standardize the casting process, select qualified raw materials, and treat the surface of the castings.


Valve castings are an important component of valves and have a great impact on product quality and performance. Therefore, it is necessary to follow specifications and standards in production to ensure the quality and reliability of valve castings.


Valve casting