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
| Parameter | Specification |
|---|
| Infrared bulb | 250W / 220 V |
| Sand tray surface temperature | 110 ℃ – 170 ℃ |
| Sand tray size (diameter × depth) | 110 × 27 mm |
| Drying time | 6 – 15 minutes |
| Timer range | 0 – 99 minutes |
| Power supply | AC220V / 10A |
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.
