What is the cooling time for precision casting processing?

The forming process of precision casting can not only shorten the development cycle of new weapons and reduce costs, but also improve the flexibility and reliability of weapons. After the cabin of the produced cruise missile is produced using aluminum alloy precision casting, the cost of the missile body is reduced by 30%. , the working hours required for each missile have been reduced from 8,000 hours to 5,500 hours, and the reliability has been improved and the weight has been reduced. Precision thermal processing technology has short production cycle, low cost, good parts performance, high product reliability, and nearly Its advantages such as no margin are highly valued by countries around the world.

The process is derived from silica sol casting. It has a complete set of advanced equipment and material composition detectors. The castings have high dimensional accuracy and good surface finish, which can eliminate the need for mechanical processing and save materials and processing costs. Cooling during processing is a very important process:

1. When alloy steel castings are air-cooled, they should be scattered in a dry place;

2. The workpiece should be tempered in time after quenching. The time interval should generally not exceed 4 hours. The alloy steel casting used for the workpiece has a low carbon content (mass fraction of carbon) and the shape of the workpiece is simple. It should not exceed 16 hours; 3. It must be cooled to room temperature before cooling. Perform cleaning, cryogenic treatment or tempering;