Can large and medium-sized carbon steel precision castings be produced?

Silica sol precision castings in the range of 10g to 150kg can be forged, but the engineering cost is relatively high. If the demander wants to obtain it at all costs, precision casting can be chosen, and the precision casting process is generally chosen. Currently, the majority of small and medium-sized castings are common on the market.

When producing large and medium-sized carbon steel precision castings, blisters and vents often appear. I have summarized the following solutions:

1. The production of trachoma can be controlled by spraying latex paint, increasing the strength of the sand mold, strict modeling and buckling process.

2. Before pouring the molten steel, complete deamination should be carried out, the moisture content of the modeling design raw materials should be controlled, the entry of carbon steel precision castings should be avoided, the die and mandrel exhaust pipes should be unobstructed, the pouring temperature, speed and time should be controlled, and an effective processing technology should be formulated. .