Sundhy SDAF1000 Ash Fusion Temperature Tester

Overview

The Sundhy SDAF1000 Ash Fusion Temperature Tester is a fully automated, high-temperature thermal analysis system engineered for precise determination of ash fusion characteristics in solid fuels—primarily coal and solid biomass. It operates on the standardized visual observation principle defined in GB/T 219–2008 and GB/T 30726–2014, wherein ash samples are formed into standardized pyramidal cones (ash cones) and heated under controlled atmospheric conditions while their physical deformation stages—namely the initial deformation temperature (IDT), softening temperature (ST), hemispherical temperature (HT), and flow temperature (FT)—are captured and analyzed in real time. The instrument employs a dual-atmosphere furnace capable of maintaining either oxidizing or weakly reducing conditions via carbon-sealing methodology, ensuring strict adherence to regulatory test protocols used across power generation, metallurgical processing, cement manufacturing, and academic research laboratories.

Key Features

• Automated sample handling mechanism enabling unattended loading/unloading of up to five standard ash cones per test cycle—reducing operator intervention and improving throughput consistency.
• High-stability furnace with imported refractory insulation materials and a single-layer graphite crucible design optimized for uniform thermal distribution and long-term stability at 1600 °C.
• Integrated CE-certified industrial-grade HD camera system with active thermal shielding and forced-air cooling, delivering continuous high-fidelity imaging throughout the full heating ramp without lens fogging or sensor drift.
• Proprietary image-processing algorithm calibrated against reference standards to identify characteristic fusion temperatures with repeatability compliant with national metrological requirements.
• Anti-spill trough integrated into the ash cone support plate, preventing molten slag adhesion and simplifying post-test maintenance—extending service intervals and minimizing consumable replacement frequency.
• Robust mechanical architecture with vibration-damped base frame and precision-aligned optical path, supporting GLP-compliant operation in regulated QA/QC environments.

Sample Compatibility & Compliance

The SDAF1000 accommodates ash specimens derived from coal, lignite, anthracite, coke, and solid biomass feedstocks—including agricultural residues and energy crops—as specified in GB/T 30726–2014. Its furnace configuration supports both oxidizing and weakly reducing atmospheres, with the latter achieved through sealed carbon addition, meeting the exact gas composition profiles required by GB/T 219–2008. All hardware components—including combustion tube, sample boats, and furnace lining—are fabricated from high-purity, high-density ceramic and graphite composites rated for continuous exposure to 1600 °C. The system is designed to operate within ISO/IEC 17025-accredited laboratories and supports audit-ready documentation when paired with validated software configurations.

Software & Data Management

The embedded control and analysis software provides synchronized thermal profiling, real-time video streaming, timestamped image capture, and automated feature extraction. Each test generates a complete digital record—including raw thermal curve data, annotated video frames at each fusion stage, operator ID, calibration logs, and environmental metadata—exportable in CSV and PDF formats. Audit trail functionality records all user actions, parameter modifications, and system events in accordance with principles aligned with FDA 21 CFR Part 11 for electronic records and signatures. Software updates are delivered via secure HTTPS channel and validated prior to installation to ensure continued compliance with evolving quality system requirements.

Applications

• Coal quality assessment for boiler design and slagging/fouling prediction in thermal power plants.
• Biomass fuel qualification and co-firing feasibility studies in utility-scale combustion systems.
• R&D validation of ash behavior under varying mineralogical compositions and blending ratios.
• Regulatory compliance testing for emissions reporting and fuel procurement specifications.
• Academic investigation of low-melting eutectic formation, phase transitions, and silicate melt rheology in high-temperature ash systems.

FAQ

What standards does the SDAF1000 comply with?
It is fully compliant with GB/T 219–2008 and GB/T 30726–2014 for ash fusion temperature determination.
Can the instrument operate under both oxidizing and reducing atmospheres?
Yes—oxidizing conditions are maintained by ambient air circulation; weakly reducing conditions are achieved using the carbon-sealing method as specified in GB/T 219–2008.
How many samples can be processed simultaneously?
Up to five standard ash cones may be loaded and tested in a single automated cycle.
Is the video recording system suitable for long-duration tests at 1600 °C?
Yes—the camera subsystem includes thermally isolated mounting, active cooling, and CE-certified industrial optics rated for continuous operation under radiant heat load.
Does the system support traceable calibration and audit logging?
Yes—software enforces electronic signature workflows, immutable event logging, and exportable audit trails compatible with GLP/GMP and ISO/IEC 17025 quality management frameworks.