Dongguan Precision CastingIn the production process, we must pay attention to the use of correct operation methods. Next, Cheng Mao will tell you how to avoid porosity in precision castings.

1. For messy thin-walled castings, in order to improve the air permeability of precision casting shells, if possible, vent holes can be set at the highest point. Set up the pouring system reasonably to avoid pouring entrained gas and facilitate the discharge of gas in the cavity.

2. Properly increase the pouring temperature, reduce the distance between the ladle nozzle and the pouring cup as much as possible, and reduce the pouring speed, so that the molten metal can fill the mold smoothly, avoid being involved in the gas, and make the gas in the cavity and the liquid metal can be discharged smoothly.

3.Lost wax castingThe mold material should be swept clean, and the residual mold material should be as little as possible.

4. The mould shell should be sufficiently baked and the temperature should be high enough; silica sol and ethyl silicate shell 950-1100 degrees Celsius, water glass shell 850-900 degrees Celsius; heat preservation time is greater than&, to ensure casting processing The molded shells are roasted thoroughly, and the gas-producing substances are fully swept away. The thoroughly roasted shell is white or light gray, and there should be no dark spots.

The needs of stainless steel casters have gradually increased with the changes in the market. During the period of market decline, Cheng Mao had little effect on sales. On the contrary, the current market changes are more popular, because only by serving users can they gain users’ appreciation. Dongguan Cheng Mao Hardware Products Co., Ltd. not only enhances the quality of casting and processing products, but also continuously improves the quality of its needs. It does its best to use centered and comprehensive quality products.

Dongguan Precision CastingThere are many goods, and there are some colleagues in Dongguan. If you ask how to buy such a type? Sometimes you can’t tell by looking at the price. The price is high, and it’s not necessary to use reassurance. The point is to look at reputation and sales volume, and look at user awareness. About us and will do our best to create professional well-known brands. You can directly call to carry out inquiry and inquiry, or to carry out inquiry in our company. We have always checked and discussed, and we have been developing in terms of improving production quality.

It can serve customers, and the product quality is excellent. Users agree to help you implement it in the profession. According to the user's independent implementation, we can get more appreciation and more users.