What are the common faults of core shooting machines and their solutions?

2025,03,16

Insufficient Sand Shooting

Reasons: Insufficient sand shooting pressure; Too short sand shooting time; Insufficient sand quantity in the sand hopper; The sand shooting nozzle is blocked; Poor exhaust of the mold.
Solutions: Check the air pressure system and adjust the sand shooting pressure to an appropriate value; Extend the sand shooting time; Supplement the molding sand in a timely manner to ensure there is enough sand in the sand hopper; Clean the sand shooting nozzle to remove the blockage; Improve the exhaust system of the mold, such as adding exhaust holes or cleaning the exhaust channels.

Insufficient Core Strength
Reasons: Poor quality of the molding sand, such as excessive mud content, inappropriate moisture, improper proportion of the binder, etc.; Uneven sand shooting; Insufficient curing time or insufficient curing temperature.
Solutions: Test the quality of the molding sand, adjust the molding sand formula, and control the mud content, moisture, and binder proportion well; Check the sand shooting device to ensure uniform sand shooting. You can appropriately increase the number of sand shooting times or adjust the position of the sand shooting head; According to the characteristics of the binder, adjust the curing time and temperature to ensure the core is fully cured.

Rough Surface of the Core
Reasons: Rough surface of the mold; Uneven particle size of the molding sand; Unstable sand flow during the sand shooting process.
Solutions: Polish the surface of the mold to improve the surface finish of the mold; Screen the molding sand to ensure its uniform particle size; Check the sand shooting system, such as the wear conditions of components like the sand shooting barrel and blades, and replace the worn components in a timely manner to stabilize the sand flow.

Equipment Air Leakage
Reasons: Aging and damage of the air pipe; Loose sealing at the joints; Damage to the cylinder seals.
Solutions: Replace the aging or damaged air pipe; Check the joints, tighten the nuts or replace the sealing washers to ensure good sealing; Disassemble the cylinder and replace the damaged seals.

Dongguan Shengshi Weiye Machinery Technology Co.The main equipment produced are: Liquid Die Forging Machine, low-pressure Casting Machine, Gravity Casting Machine, cold forging machine, hot forging machine, etc

Author:

Ms. Hu

E-mail:

dgliheng168@163.com

Phone/WhatsApp:

+86 13509684273