High-Temperature Load Softening Point Tester
Published: 3/14/2025
A laboratory instrument for determining the load softening temperature of refractories, ceramics, and graphite under simultaneous heat and compressive load. It conforms to YB/T 370, GB/T 5989, and ISO 1893:1989 methods (non-dilatometric heating).
Product Description
The High-Temperature Load Softening Point Tester measures the temperature range at which refractory and related materials undergo noticeable plastic deformation under a specified compressive load during controlled heating. It supports non-dilatometric heating methods per international and Chinese standards and offers configurations suited to different sample geometries and material types.
The system provides manual or fully programmable heating with multi‑segment profiles, precise deformation measurement, optional direct-load digital application, and stable thermal zones for accurate determination of softening behavior. It can interface with a computer for automated control and report generation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Heating Temperature (Max) | 1650°C or 1750°C (two options) |
| Usable Temperature | 1600°C (for 1650°C furnace), 1700°C (for 1750°C furnace) |
| Temperature Control Accuracy (Heating Segment) | < ±2°C |
| Heating Rate | 0–20°C/min, freely settable |
| Heating Program | manual or automatic; ≥ 30 segments |
| Deformation Measurement Range | 0–10 mm |
| Deformation Indication Error | ≤ 0.03 mm |
| Sample Size Option 1 | height 50 ± 0.5 mm; diameter 36 ± 0.15 mm |
| Sample Size Option 2 | height 50 ± 0.5 mm; diameter 50 ± 0.35 mm |
| Uniform Temperature Zone Height | ≥ 75 mm |
| Uniform Zone Temperature Difference | ≤ 20°C |
| Maximum Power | 3.5–6 kW |
| Specimen Load Pressure | 0.1 MPa or 0.2 MPa (typical options) |
| Loading Method (Optional) | direct compression with digital display |
| Load Range | 100–1000 N |
| Load Resolution | 1 N |
| Furnace Structure | opening-type furnace for easy replacement of upper/lower push rods |
| Loading System | independent for higher loading accuracy |
| Control And Reporting | PC connectivity for full-automatic control and automatic report printing |
| Standards Compliance | YB/T 370; GB/T 5989; ISO 1893:1989 (non-dilatometric heating method) |
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Contact Information
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B6-101, Zhongnan High-Tech Intelligent Manufacturing Industrial Park, No. 10 Shuangma Street, Yuetang District, Xiangtan City, Hunan Province, China
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