한국신동공업(주)

Introduction to sand control

Casting defect rate by reason (%)

About 2/3 of Defects is caused by Sand
Defects can be reduced by controlling Sand

Comparison of casting in sand conrtol

What is good sand?

Resolving casting defects in sand control systems

Q. Are you having trouble with defective castings?

Sand properties constantly fluctuate by production conditions, such as product weight, core sand inclusion, etc.
To reduce casting defects, sand properties need to be kept uniform.
Sand control is important.

For eliminating casting defects

Sand Control (IDST)

Sand properties change during transportation from mixer to molding machine by External Factor; such as Ambient temperature, Humidity, Sand temperature, Lapsed time, etc.

It is critical to control sand properties at the molding machine to prevent casting defects.

Features of the SAND CONTROL(IDST)

IDST automatically measures 5 sand properties

Sand temperature
Moisture
CB
Compressive strength
Permeability

Features

01Sand immediately before charging to molding machine is collected and measured.
02FEED-BACK: According to fluctuation of sand properties measured by IDST, water addition volume is adjusted at sand mixer.
03FEED-FORWARD: If measured sand properties are out of criteria, such sand is not molded, or mold made by such sand is not poured.

Processing of SAND CONTROL

Change the settings in the mixer according to the data obtained from the molding machine by changing the settings in the mixer according to the data obtained from the molding machine.