On the whole, China's academic research on foundry is not backward, and many of its research achievements have reached the international advanced level, but few of them have been translated into actual productive forces.Domestic precision foundry production technology is limited to a few key enterprises, the overall technical level of the industry backward, low casting quality, high material and energy consumption, poor economic efficiency, poor labor conditions, serious pollution.The concrete performance is, the shape still carries on the mold processing by the hand or the simple machinery;The socialization, specialization and commercialization of production and supply of casting raw and auxiliary materials are far from meeting the needs of new technology development in terms of variety and quality.The production level and quality of casting alloy materials are low;Backward production management;Process design with personal experience, less computer technology application;Poor basic conditions such as casting technology and equipment;High proportion of manual operation in the production process, low technical quality of on-site workers;Only a few large automobile and internal-combustion engine group foundries adopt advanced molding and core-making technology, and most foundry enterprises still use shock-compression moulding machines or even manual moulding, and the core-making is mainly made of tung oil, synthetic grease and clay binder sand.Most investment foundry to sodium silicate shell;Low - pressure casting can only produce non - iron or cast iron small and medium - sized pieces, can not produce cast steel;Stable production with EPC technology is limited to the exhaust pipe, shell and other castings, the productivity is below 30 / h, the casting size accuracy and surface roughness level is low;Although a relatively complete standard system for the foundry industry has been established, most enterprises passively implement the standards, which are usually lower than GB(national standard) and ISO(international standard).Quality and market awareness is not strong, only a few professional casting enterprises through the ISO 9000 certification.The research on quality management combined with the characteristics of foundry enterprises is very weak.

In recent years, some advanced smelting equipment has been developed and popularized to improve the temperature and comprehensive quality of molten metal.Some foundry non - ferroalloy plants still use fuel oil, coke crucible furnace and other backward melting technology.The cupola - furnace dual process is only used in a few mass production lines.A few large and medium-sized arc furnaces use ultra-high power (600 ~ 700kVA/t) technology.

The introduction of AOD, VOD and other refining equipment and technology, improve the internal quality of advanced alloy cast steel.Ultra-low carbon and high strength martensite stainless steels used in important projects adopt refining technology to improve the purity and performance of liquid steel.0Crl6Ni5Mo, Crl3Ni5Mo cast martensitic stainless steel on the basis of maintaining the original toughness, from 0.70 ~ 0.75 to 0.85 ~ 0.90, strength increased by 30% ~ 60%, hardness increased by 20% ~ 50%.

It is widely used in domestic rare earth resources, such as rare earth magnesium treated ductile iron in automobile, diesel engine and other products.Rare earth medium carbon low alloy cast steel and rare earth heat resistant steel are used in machinery and metallurgical equipment.A series of domestic inoculants, spheroidizing agents and vermicularizing agents were preliminarily formed, which promoted the quality improvement of cast iron.

On the whole, China's academic research on foundry is not backward, and many of its research achievements have reached the international advanced level, but few of them have been translated into actual productive forces.Domestic precision foundry production technology is limited to a few key enterprises, the overall technical level of the industry backward, low casting quality, high material and energy consumption, poor economic efficiency, poor labor conditions, serious pollution.The concrete performance is, the shape still carries on the mold processing by the hand or the simple machinery;The socialization, specialization and commercialization of production and supply of casting raw and auxiliary materials are far from meeting the needs of new technology development in terms of variety and quality.The production level and quality of casting alloy materials are low;Backward production management;Process design with personal experience, less computer technology application;Poor basic conditions such as casting technology and equipment;High proportion of manual operation in the production process, low technical quality of on-site workers;Only a few large automobile and internal-combustion engine group foundries adopt advanced molding and core-making technology, and most foundry enterprises still use shock-compression moulding machines or even manual moulding, and the core-making is mainly made of tung oil, synthetic grease and clay binder sand.Most investment foundry to sodium silicate shell;Low - pressure casting can only produce non - iron or cast iron small and medium - sized pieces, can not produce cast steel;Stable production with EPC technology is limited to the exhaust pipe, shell and other castings, the productivity is below 30 / h, the casting size accuracy and surface roughness level is low;Although a relatively complete standard system for the foundry industry has been established, most enterprises passively implement the standards, which are usually lower than GB(national standard) and ISO(international standard).Quality and market awareness is not strong, only a few professional casting enterprises through the ISO 9000 certification.The research on quality management combined with the characteristics of foundry enterprises is very weak.

In recent years, some advanced smelting equipment has been developed and popularized to improve the temperature and comprehensive quality of molten metal.Some foundry non - ferroalloy plants still use fuel oil, coke crucible furnace and other backward melting technology.The cupola - furnace dual process is only used in a few mass production lines.A few large and medium-sized arc furnaces use ultra-high power (600 ~ 700kVA/t) technology.

The introduction of AOD, VOD and other refining equipment and technology, improve the internal quality of advanced alloy cast steel.Ultra-low carbon and high strength martensite stainless steels used in important projects adopt refining technology to improve the purity and performance of liquid steel.0Crl6Ni5Mo, Crl3Ni5Mo cast martensitic stainless steel on the basis of maintaining the original toughness, from 0.70 ~ 0.75 to 0.85 ~ 0.90, strength increased by 30% ~ 60%, hardness increased by 20% ~ 50%.

It is widely used in domestic rare earth resources, such as rare earth magnesium treated ductile iron in automobile, diesel engine and other products.Rare earth medium carbon low alloy cast steel and rare earth heat resistant steel are used in machinery and metallurgical equipment.A series of domestic inoculants, spheroidizing agents and vermicularizing agents were preliminarily formed, which promoted the quality improvement of cast iron