Quality and safety production of valve castings

Valve is a widely used supporting product, which is applied in almost all fields of production. Valve castings are widely used in chemical industry, light industry, electric power, food and other industries because of their good corrosion resistance and sufficient mechanical strength. It plays an extremely important role in the safety and economic operation of the system. Frequent running, running, dripping and leaking in production are mostly caused by the quality of valves. Valve leakage will not only affect the smooth progress of the process, resulting in waste of energy and raw materials, if the leakage material is toxic or flammable, it will also pollute the environment, endanger personal safety and national property. In recent years, many factories have occurred serious accidents, such as poisoning, fire, explosion, etc. Among them, valve damage or failure accounts for a considerable proportion. In 1996 alone, there were many personal casualties caused by valve failure. Therefore, whether the valve quality is qualified has become a very important factor in safety production. The service conditions of valve castings are very complex, and they are often used in dangerous situations such as toxicity, strong corrosion, flammability, explosion, high temperature and high pressure, so the quality requirements of valve castings are very strict. In order to make and use valve castings well, it is necessary to have a deep understanding of the performance, requirements and application characteristics of valve castings. At present, there are a large number of township enterprises producing valve body castings in China. These enterprises are weak in general technical force, and often fail to comply with the stipulated technical standards for manufacturing valve castings, leaving a great hidden danger to safety production. Improving the quality of valve castings is helpful to create safe and reliable valves and ensure safety in production.