How to control the temperature of silica sol precision casting? What are the methods?

2022-11-17 17:01 Mike

Stainless steel precision casting is a casting process with little or no cutting. It is an excellent technology in the foundry industry and has a wide range of applications. Stainless steel precision casting can effectively ensure the good fluidity of the melt during the transfer process, and the selection of stainless steel precision casting temperature should be effectively determined according to the transfer distance and the cooling and flow

factors during the transfer process.


Stainless steel precision casting ingots tend to have relatively low cracks. To a certain extent, it can effectively ensure that the alloy has good exhaust feeding ability, effectively create order close conditions, increase density, and the casting temperature is generally high. Casting with a diameter of 350 mm or more The ingot temperature is usually 730 ~ 750 ℃.


When the stainless steel precision casting satisfies its fluidity and does not form bright crystals to a certain extent, the general temperature is 715~740°C. Stainless steel precision casting flat ingots have a high tendency to thermal cracking, and the temperature ofstainless steel precision casting is relatively low, generally at 680~735°C.


Silica sol precision casting is suitable for casting of various types and alloys. The dimensional accuracy and surface quality of castings produced by this technology are much higher than other casting methods. Other casting methods are difficult to cast complex,

not easy process and high temperature resistance casting.


Silica sol precision casting belongs to investment casting, and the use of silica sol

precision casting is as follows:


1. First make the mold according to the shape of the part;


2. Then use the mold to make the same wax model as the part;


3. Put the wax type into the slurry made of silica sol and quartz sand, there will be a

layer of slurry on the wax type, and then solidify;


4. Dewaxing, put the model into hot water, the wax will melt and float on the water,

leaving the shell;


5. Casting.