Casting
Application of precision casting in military parts manufacturing
Zhongwei Precision is a military supporting supplier based on precision casting and precision parts manufacturing, specializing in the design and manufacture of precision castings and precision parts for aviation, aerospace, guided weapons, and the company has obtained relevant qualifications for military business. Zhongwei Precision is one of the few privately-owned enterprises in the military with the ability to integrate precision casting, precision manufacturing, and final assembly and adjustment. The main products of Zhongwei Precision include a series of missile parts, various avionics chassis, a series of optoelectronic pod structural parts, aero-engine parts, various optoelectronic platform parts, various aircraft parts, etc. Mainly used in aviation, aerospace, weapons and other military industries, it is the core structural component of various high-end military equipment such as aircraft, drones, spacecraft, launch vehicles, and missiles. Its quality directly affects the technical performance of the aforementioned high-end equipment. In recent years, Zhongwei Precision has continuously participated in the supporting research and development of new products for customers. The product structure has been continuously improved and upgraded, and the quantity and quality of products have been continuously improved. Customers include more than ten large state-owned military research institutes and military factories such as weapons, aerospace, AVIC, and Chinese Academy of Sciences. , is the "excellent supplier" and strategic partner of many customers.
The company adopts the precision casting process to produce all kinds of impellers, blades and hollow blades with no margin and slight margin, which are mainly used in aircraft, trains, ships and various pumps. The materials of the products are various stainless steels and superalloys.
1. The production process of superalloy is complex and the technical barriers are high
Superalloys refer to high-end metal structural materials that use iron, nickel, cobalt and other metals as basic materials and can work for a long time at high temperatures above 600°C and under certain stress. From the perspective of sub-sectors, superalloy materials belong to high-end metal structural materials in the field of new materials. Superalloys have excellent comprehensive properties, excellent high temperature strength and plasticity, good oxidation resistance and hot corrosion resistance, excellent creep resistance, fracture resistance and good microstructure stability. With the continuous progress of technology and materials, superalloy products are constantly iterated, the temperature bearing capacity is continuously improved, and the comprehensive performance is continuously enhanced. From traditional casting superalloys and deformed superalloys, powder superalloys and titanium-aluminum intermetallic compounds have been developed. , oxide dispersion strengthened superalloys, corrosion-resistant superalloys, powder metallurgy and nanomaterials and a series of new superalloy materials.
Superalloys can be classified according to various classification methods, of which nickel-based and deformed superalloys are the main application categories. Superalloys can be divided into iron-based, nickel-based and cobalt-based superalloys according to the alloy matrix elements, among which nickel-based superalloys are the most widely used, accounting for 80%; according to the preparation process, they can be divided into deformed superalloys (grade GH), Casting superalloys (equiaxed crystal - grade K, oriented columnar crystal - grade DZ and single crystal - grade DD), new superalloys (powder superalloy (grade FGH) and intermetallic compound superalloy (grade JK)) Three categories; according to the strengthening method, it can be divided into solid solution strengthening, aging strengthening, oxide dispersion strengthening and grain boundary strengthening. Because of its high high temperature strength, good anti-oxidation, anti-corrosion, anti-fatigue and other properties, superalloys have become the key specialties for the development of many important industrial fields such as aerospace, electric power, metallurgy, petrochemical industry, nuclear industry, and glass manufacturing. Material.
The company's precision investment casting superalloy castings
High-temperature alloy and heat-resistant steel precision casting products mainly include various radiators, high-temperature wear-resistant products, high-temperature nozzles, high-temperature extrusion dies, hot-rolled guides, etc. The materials used can be suggested by customers or developed by our company.