Relevant process requirements and precautions for precision casting

1、 Process requirements:

Cleaning time with clear liquid: After the module is welded to the trailer and left stationary for more than 45 minutes, it can be cleaned. Room temperature: 24 ± 2 ℃

2、 Operating procedures:

1. Remove the module that has been stationary for more than 45 minutes from the trolley. Immerse the module in the cleaning solution and vibrate it back and forth about 10 times, lasting for about 3-4 seconds.

1) After removal, hang it at the designated position and drip it thoroughly, then use a compressed air nozzle to blow dry or cool dry the module.

2) Hang the cleaned module onto the transport trolley.

3) Spot check the cleaning effect of the module.

2. From the same batch of cleaned modules, select two groups and immerse them in silica sol (adding a wetting agent with a volume of 0.5% of silica sol). After removal, carefully check whether they are wet

1) Being fully wetted indicates a good cleaning effect. This module can be rinsed in water to remove the silica sol, blown off with compressed air, and hung onto a transport trolley.

2) If the module cannot be completely wetted, the entire batch of modules must be cleaned again.

3、 Precautions:

a) If there is a large amount of flocculent or viscous increase in the cleaning solution, it should be replaced with a new one.

b) During the use of cleaning solution, wax molds that have fallen in should be promptly removed. After use, all foreign objects should be removed and sealed with a cover for storage.

c) According to the requirements, the air circulation in the workshop should be ensured, and fireworks are strictly prohibited.

d) Residual liquid residue should be disposed of at designated locations and should not be randomly disposed of.

e) Strictly comply with this process operating procedure.