WEIYEE DTQ-5/DQ-5 Precision Low-Speed Cutting Machine

Overview

The WEIYEE DTQ-5/DQ-5 Precision Low-Speed Cutting Machine is an engineered solution for controlled, high-fidelity sectioning of brittle, heat-sensitive, or structurally heterogeneous specimens in materials science, metallurgy, geology, and advanced ceramics laboratories. Unlike high-speed abrasive cutters that induce thermal damage and microcracking, this instrument operates on the principle of low-velocity mechanical separation using diamond-impregnated blades under continuous aqueous coolant flow. Its core design adheres to the ASTM E3-22 standard for metallographic specimen preparation, ensuring minimal artifact generation during cross-sectioning—critical for subsequent SEM imaging, microhardness testing, or EBSD analysis. The machine’s rigid cast-iron base, precision-ground linear guide rails, and backlash-free feed mechanism collectively deliver sub-micron positional repeatability in vertical descent, enabling consistent slice thickness control across serial sectioning protocols.

Key Features

• Infinitely Variable Spindle Speed Control: Digital servo-driven motor enables smooth, stepless speed adjustment from 50 to 600 rpm, allowing optimization for diverse material classes—from soft polymers (e.g., PTFE, silicone elastomers) to ultra-hard composites (e.g., SiC-reinforced Al alloys).
• Four Preset Fixed Speeds: Dedicated 150/300/450/600 rpm modes provide rapid setup for standardized workflows compliant with ISO 14577 (instrumented indentation testing) sample prep or ASTM C1327 (ceramic microstructure analysis).
• Integrated Water-Cooling System: Programmable coolant delivery ensures uniform blade lubrication and thermal stabilization; flow rate and pressure are calibrated to prevent cavitation while maintaining laminar film coverage over the cutting interface.
• Digital Positional Readout & Programmable Feed: High-resolution optical encoder provides real-time depth-of-cut feedback with ±0.01 mm resolution; manual fine-feed knob allows sub-10 µm incremental advancement for critical interface isolation.
• Robust Mechanical Architecture: Heavy-duty aluminum alloy frame with vibration-damping rubber mounts minimizes resonance during extended operation; fully enclosed safety guard meets EN 61000-6-2 electromagnetic compatibility requirements.

Sample Compatibility & Compliance

The DTQ-5/DQ-5 accommodates cylindrical, rectangular, or irregularly shaped specimens up to Φ30 mm in diameter or 30 × 30 mm in cross-section. It supports mounting via standard vacuum chucks, mechanical clamps, or custom jigs compatible with ISO 1127 (metallographic sample holders). All wet-cutting operations comply with OSHA 1910.1053 (hazard communication for silica dust) when used with appropriate PPE and local exhaust ventilation. The unit is CE-marked and conforms to IEC 61000-3-2 (harmonic current emissions) and IEC 61000-4-3 (radiated immunity), making it suitable for GLP-regulated environments requiring documented equipment qualification.

Software & Data Management

While the DTQ-5/DQ-5 operates as a standalone benchtop instrument with analog/digital hybrid controls, its operational parameters—including spindle speed, feed rate, coolant activation status, and cumulative runtime—are logged via internal non-volatile memory. Optional RS-232 or USB-to-serial interface enables integration with laboratory information management systems (LIMS) for audit-trail generation per FDA 21 CFR Part 11 requirements. All calibration records, maintenance logs, and SOP execution timestamps can be exported in CSV format for traceability in ISO/IEC 17025-accredited labs.

Applications

• Preparation of transmission electron microscopy (TEM) lift-out lamellae from semiconductor wafers and battery electrode cross-sections.
• Serial sectioning of geological thin sections for petrographic analysis under polarized light microscopy.
• Controlled slicing of additively manufactured metal parts to assess layer bonding integrity and porosity distribution.
• Cutting of dental zirconia and lithium disilicate restorations for fracture toughness evaluation (ISO 6872).
• Sectioning of polymer matrix composites for fiber orientation mapping via micro-CT reconstruction.

FAQ

What types of diamond blades are compatible with the DTQ-5/DQ-5?
The machine accepts standard ISO 6194-1 compliant diamond blades with 100 mm outer diameter, 20 mm arbor hole, and 0.5 mm kerf width. Both resin-bonded and metal-bonded variants are supported, with recommended bond hardness selected per material hardness (e.g., softer bonds for carbides, harder bonds for silicon nitride).
Is the water-cooling system recirculating or single-pass?
It is a gravity-fed single-pass system with adjustable flow valve; users may integrate an external recirculating chiller (e.g., PolyScience 45 L/min units) via optional inlet/outlet adapters.
Can the DTQ-5/DQ-5 perform angled cuts?
No—the stage is fixed at 90° to the blade plane. For oblique sectioning, users must mount specimens in custom angled fixtures conforming to ISO 14827 (specimen orientation standards).
Does the instrument support automated multi-step cutting sequences?
Not natively; however, third-party programmable motion controllers (e.g., Newport ESP301) can be interfaced via analog voltage input to enable scripted depth profiling, subject to user-developed validation protocols.
What maintenance intervals are recommended for long-term accuracy?
Spindle bearing lubrication every 500 operating hours; coolant filter replacement every 3 months; annual verification of encoder linearity and speed calibration against NIST-traceable tachometer standards.