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Coated Sand – Precision Casting Process

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Coated sand as the raw material in the desert, processed into a new type of precision casting material coated sand, a green precision casting of key technology products, the upgrading of traditional casting materials to fill an international casting industry blank, won the Ministry of Electrical and Mechanical Science and Technology Progress Award, and in the country to create the first fully automatic coated sand production line, to achieve “sand casting.”

In the precision casting industry, the automobile industry more than 90% of domestic brands, some joint ventures and foreign brands are using “Ren Chong covered sand” series of products, such as the North Benz, Shanghai Volkswagen, Changchun FAW, BMW Brilliance, Guangzhou Honda, Guangzhou Toyota, Chongqing Suicheng, Changan Automobile, Jianghuai Automobile, NAC, SAIC, Beiqi, Hafei Automobile, Changhe Automobile, Foton Motor, Shaanxi Auto Group, BYD Auto, Second Automobile, China National Heavy Duty Truck, Yutong Automobile, Chongqing Lifan, Geely Automobile, Weichai power and other enterprises.

 

Coated Sand - Precision Casting Process Coated Sand - Precision Casting Process Precision Casting Process Precision Casting Process

Features: Fast curing, high strength, low gas, low expansion

Advantages: to adjust the speed of gas, better to avoid the casting hole defects

Product Price: contact the website immediately to obtain the latest offer!

Industry status: China’s auto engine parts more than 90%, are made using Ren Chong coated sand made of.

Ren Chong covered the story of the birth of film

At that time the industry background:

In the foundry industry, the manufacture of many precision instruments, the need to do with the mold to do the sand, such as the car’s engine. But not all sand can be competent, then has been relying on imports from Australia, the British sand, the price of this imported sand a ton of up to 7,000 yuan.

Qin Shengyi initiation idea:

Young and fit Qin Shengyi decided to develop mold to do the domestic sand. In 1985, he first proposed with China’s Inner Mongolia desert 10 yuan a ton of blooming quartz sand, instead of imported zircon sand to do precision casting materials. This idea is ushered in a cynical. The reason is that the expansion of quartz sand is three times the zircon sand, easy to deformation after heating, it is impossible to replace the zircon sand. Even the then developed US technology is also the use of imported zircon sand.

3 years experiment down, Qin Shengyi each with 1.5 kg of sand to do experiments, sharing more than 9,000 kilograms of sand, more than 6,000 experiments, and finally developed a “high temperature coated sand”.

At present, the main products of the coated sand are:

ZFS-KGD fast curing high strength low gas coated sand

ZFS-KGDD fast curing high strength low gas low expansion coating sand

ZFS-KGDK fast curing high-strength low-gas low-expansion fast-release plastic sand

ZFS-KGM fast curing high-strength low-gas low-expansion slow-release coated sand

 

ZFS-KN fast curing high temperature resistant coated sand

ZFS-KND fast curing high temperature low gas low expansion sand

ZFS-KNDK fast curing high temperature resistant low gas low expansion fast gas film sand

ZFS-KNDM fast curing high temperature low gas low expansion slow gas high temperature coated sand

ZFS-KNGD fast curing high temperature, high strength, low gas, low expansion, coated sand

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