Where does a good valve start?
Cast!
As the first link in the valve production process
The quality of the casting determines the quality of the valve
Qingtian Lianggong Valve Foundry Co., Ltd.
As a wholly-owned subsidiary of Lianggong valve
It is an important part of the whole industry chain of the group today
Let's find out with the lens
Wax workshop
In this link, the temperature of the wax paste is very important.
Too high or too low temperature will change its concentration, which in turn affects the saturation of the product.
After the wax mold is formed and demolded, it is necessary to carefully check the appearance, repair the defects, and ensure that the qualified products enter the next link
shell workshop
Precisely proportioned slurry water is the guarantee of product appearance quality.
The temperature and humidity are related to the success of dewaxing, and it also requires precise control. After 24 hours of drying in the warehouse, the mold shell will be sizing and sanding again, and this process needs to be repeated 5-7 times until the mold is The shell reaches the dewaxing standard.
casting shop
Casting is the most important step after the mold shell is dewaxed.
casting shop
The shell is heated to 1100 degrees in the roaster and kept warm. The temperature of the molten steel should rise to about 1600 degrees. After the spectroscopic physicochemical process is completed, the impurities are removed, and the casting can be performed.
