Product Overview

The QR-SHG Micro-computer Controlled Dual Disc Infrared Dryer is a specialized device designed to rapidly determine the moisture content of molding sand in wet casting production. Since molding sand properties are highly sensitive to moisture fluctuations, precise monitoring and control are essential to ensure optimal casting performance and avoid defects.

This instrument adopts infrared heating technology combined with microcomputer digital display control, ensuring fast, efficient, and reliable drying. It is suitable for testing original sand, molding sand, and core sand, making it an indispensable tool in foundries and research laboratories.

Importance of Moisture Control in Molding Sand

• Excessive moisture: Poor flowability, reduced compaction, low wet strength → casting defects such as rough surfaces, swelling, porosity, sand inclusion, and sticking.

• Insufficient moisture: Poor toughness, weak mold strength → defects like sand flushing, sand holes, and difficulty in mold stripping.

• Proper moisture content ensures excellent moldability, strength, and surface quality of castings.

Instrument Features

• Microcomputer-controlled digital timer for precise drying process.

• Infrared heating provides rapid and uniform evaporation of moisture.

• Dual-disc design allows simultaneous drying of two samples, improving efficiency.

• Simple structure with infrared bulb, housing, sand tray, and digital timer for reliable operation.

• Fast analysis: drying time of only 6–15 minutes.

Technical Specifications

Main Applications

The QR-SHG Infrared Dryer is widely used in:

• Foundries and casting workshops

• Quality inspection departments

• Materials research laboratories

• Universities and technical training institutions

✅ Why Choose QR-SHG?
Because it combines infrared drying speed, dual-sample efficiency, and microcomputer precision, ensuring accurate and reliable moisture analysis for molding sand in casting production.