The future of investment casting in China

China's investment casting industry was established in the 1950s.

There are two technological enterprises for historical reasons: one is silica sol or ethyl silicate shell process, the other is sodium silicate shell process.The former plant's investment casting has reached the international level, the latter plant's casting has not reached the international level, but the latter type of factory accounts for the majority of the total number of manufacturers.The first category is dominated by former core foundries in the aerospace sector and new joint ventures in the 1990s.This kind of factory has developed rapidly in the past ten years.In 1988, it accounted for only six of the country's investment contract factories, with an output value of about 10 per cent.In 1993, the number of factories increased to 10 and the output value increased to 25.In 1997, the number of plants increased to 13.Nearly 50.At present, the number of investment casting factories in China is about 1500, with an annual output of 170,000 tons of precision casting and an output value of about 280 million us dollars.

With the development of domestic economy and aerospace industry, the development of international market, the improvement of technology and management level, the improvement of raw materials and equipment supply, the first class foundry will continue to develop.The former aviation backbone factory closely follows the international advanced technology, enhances the management level, moves toward the international market.The export enterprises with stable technology and production scale should improve the product grade and stop the production of golf ball head, hardware, harness and valve with lower requirements of high precision, but should enlarge the precision.Requirements.Produce machine parts.

The second type of foundry is oversupplied and oversupplied.With the development of cast steel and resin sand process, the market competition will be more intense.Some companies will be eliminated.It is suggested that factories with higher level and conditions should make use of the advantages of fast and cheap sodium silicate shell and invest a small amount of money to develop the silicon sol sodium silicate composite shell process to produce high quality and low cost investment casting.Than water glass shell.In order to meet the domestic and foreign automobile, machinery manufacturing, instrumentation, electronic communication equipment, food machinery and other industries demand, China's investment foundry output is large, but the product has reached international standards.These products account for only international production.Investment casting about 2.Most of China's precision casting materials can be based on domestic prices, cheaper prices, lower labor costs and a large number of skilled workers.

The domestic market has huge potential.Due to high labor costs, energy and environmental protection, developed countries are gradually turning to developing countries.This is a favorable condition for the opportunity and development of investment casting industry in China.Investment casting colleagues should strive to improve the company's technology and management level, improve product quality, open up the market, broad prospects.China is expected to become the major investment foundry of the 21st century.