XEX

Quality of ductile iron pipe fittings often appear what problem

by:XEX     2020-12-12
Ductile iron pipe fittings often appear any quality problem at present, the water supply industry is usually using graphite tube material as a supervisor. People commonly use the adoption of besmear brushs paint you will be presented with the casting sand inclusion, sand holes. Because of gate besmear brushs paint more hard and difficult. 2 is in the process of casting high pouring temperature, erosion, coating in the scour and under high temperature and soaked it is easy to fall off. Caused the sand inclusion sand holes. Has been a lot of casting factory attaches great importance to runner. Neglect of sprue in the process of casting wall. Thus caused the nodular cast iron pipe casting sand sand holes. So in order to improve casting yield, improve castings quality, reduce the total cost of castings. Using the casting gate earthenware pipe, the product easy to use, has a smooth flow, resistance to molten iron, molten steel scouring, no absorption of liquid steel, can be saw is good wait for a characteristic, can simplify the modeling process, eliminating gate on the inside of the hard work of paint, and to improve the pouring system arrangement, avoid the casting sand washing, sand holes, sand defects.
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