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What are the raw material properties of precision casting wax

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What are the raw material properties of precision casting wax

Release date:2019-09-05 00:00 source:http://en.sofoi.cn Click:

The moulds produced by precision casting wax are characterized by good stability, low shrinkage, smooth surface, high strength and good formability. The types of moulds produced abroad include filler moulds and non-filler moulds, which are subdivided into model waxes, repair waxes, emulsifiable waxes, gate waxes, and bonding waxes for embedding and sealing.


The material properties of the investment mold must meet the following conditions: good fluidity, good flow and filling performance; The melting point and softening point are moderate, which can meet the requirements of batching and mold making, and it is not easy to deform. Shrinkage rate should be controlled at less than 1%, otherwise the dimensional accuracy will be affected. The strength and surface hardness shall be able to ensure that no damage, fracture or surface scratch occurs in the manufacturing process; The surface coating should be well wetted with the refractory coating to form a uniform coating layer. When pressing the investment mold, the cavity surface smoothness is high pressure, therefore, the surface smoothness of the investment mold is also relatively high.


秒速时时彩In addition, the shell is made of refractory coating made of special binder and refractory material which can withstand high temperature. Therefore, the surface finish of investment casting is higher than that of general precision casting, generally up to Ra.1.6~3.2 mum. In recent years, due to the advantages of human resources and raw materials, China's pipe fittings and valves industry has been rapidly developed, increasing the share of production. However, due to the large number of enterprises manufacturing pipe fittings and valves and the small production scale, the lack of core competitiveness and other problems, it is difficult to further improve productivity, and the green development of pipe fittings and valves is greatly restricted.


At present, China's valve enterprises have been able to provide the market with environmental protection valves, heating valves, building valves and other products. Protection from beginning to end. Super dust and water discharge capacity; Prevent oxidation. Sand scratches. Anti - UV ingredients, long and lasting. Nano polymer technology is used to form a hard protective layer on the paint surface with no chemical trace. The unique chemical molecular structure does not contain any polishing materials, unique dust and water drainage performance, fluorine synthesis technology, more durable protection, unique anti-scrub formula.


秒速时时彩Precision casting wax is mainly used in the field of aviation industry, civil precision casting, at the same time in ships, automobiles, telecommunications machinery, machine tools and other industries has also been widely used. It is characterized by low ash content and small shrinkage, especially suitable for precision casting in civil fields. New car paint is very delicate, easy to produce slight scratches, so this product does not contain any abrasive, etc., to ensure the smooth surface of the car paint.


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