SAND CASTING EQUIPMENT.

Sand casting is the main method of casting process, accounting for about 80% of the entire casting production. Sand casting, according to the classification of binder material, can be divided into 3 major categories such as clay sand casting, resin sand casting and water glass sand casting. These 3 processes are all applicable to the production of cast steel parts, with their own advantages and disadvantages

Water glass sand process is the main type of sand process for the production of cast steel parts. Water glass sand has obvious advantages, but also has its obvious disadvantages

Compared with clay sand, it produces less dust pollution, has the advantages of good fluidity of sand, easy to compact, easy to operate, low labor intensity, good working conditions, high precision of type (core) size, good casting quality, as well as less casting defects and low energy consumption in production.

Compared with resin sand, it produces less chemical pollution, has the advantages of low production cost, non-toxic and odorless on site, as well as good labor conditions, etc. It can effectively reduce the cracking tendency of cast steel parts because of its excellent high-temperature yielding property.
However, its main disadvantages are: low dimensional accuracy of cast steel parts, poor collapse of core sand, difficulty in cleaning up the falling sand, difficulty in regenerating and reusing the old sand, large waste emission, and easy to cause environmental pollution.

In Europe and the United States, the use of clay sand or alkaline phenolic resin sand production of cast steel parts reported more. Compared with acid-hardened furan resin sand, alkaline phenolic resin sand cast steel parts have a greater tendency to reduce cracking, but the amount of resin added is greatly increased, the cost of castings increased, and the regeneration of old sand reuse performance decreased.

xinyuanzhu group in order to solve the problem of falling sand cleaning of cast steel parts, by trying to use furan resin sand process, but this process has encountered great trouble, the cast steel parts of the crack defects increased significantly, in the surface magnetic particle flaw inspection magnetic trace agglomeration phenomenon is more prominent, so many companies back to the water glass sand process. In order to improve the problem of water glass sand collapse and regeneration, the foundry has improved the CO2 hardening method, using organic ester hardening technology, which makes the quality of castings also improved. With the development of China''''s machinery industry, the casting production process emissions and casting quality put forward higher and higher requirements, furan resin sand process to produce castings size accuracy and surface quality are better than clay sand and ordinary water glass sand process, and because of its high dispersion and high reuse and clean-up grinding workload and waste sand emissions are less, therefore, in recent years, resin sand production of cast steel enterprises are also gradually Therefore, in recent years, the production of cast steel parts with resin sand enterprises are gradually increasing. No matter what kind of sand process is chosen, the thermal cracking of cast steel parts is always a difficult problem that casting personnel must face.

Xinyuanzhu Group specializes in the production of Ductile iron castings, Pig iron gray iron casting, Steel casting, Brass Casting, Malleable Iron Casting, and undertakes batch casting processing of castings. Welcome guests to cooperate with pictures or samples.