WEIYEE MP-2 Dual-Disc Grinding and Polishing Machine

Overview

The WEIYEE MP-2 Dual-Disc Grinding and Polishing Machine is an engineered solution for standardized, reproducible specimen preparation in metallurgical, ceramic, geological, and materials science laboratories. Designed around the principle of controlled mechanical abrasion, the MP-2 employs two independently driven platens rotating at fixed speeds—450 rpm on the left and 600 rpm on the right—to enable sequential or parallel grinding and polishing steps under consistent load and rotational dynamics. Its dual-disc architecture supports a two-stage preparation workflow: coarse grinding on one platen (typically using silicon carbide or alumina abrasive papers) followed by fine polishing on the other (with diamond suspension or colloidal silica on cloth pads). The machine’s rigid cast-iron base, precision-machined platen mounting, and regulated motor torque ensure minimal runout (<0.05 mm TIR) and high inter-run repeatability—critical for ASTM E3, ISO 14577, and GB/T 13298-compliant microstructural analysis.

Key Features

• Dual independent platens with fixed-speed operation: left platen at 450 rpm optimized for grinding; right platen at 600 rpm calibrated for polishing efficiency and surface finish control.
• 203 mm (8-inch) platen diameter—compatible with industry-standard 8″ grinding papers, polishing cloths, and consumables per ASTM E7, ISO 643, and EN 10360 specifications.
• Single-control interface with dedicated on/off switches and thermal overload protection for each motor—designed for operator safety and extended duty-cycle reliability.
• Stable benchtop footprint (W × D × H ≈ 420 × 480 × 280 mm) with non-slip rubber feet and integrated coolant trough for wet processing protocols.
• Motor assemblies rated for continuous operation at ambient temperatures up to 40 °C; compliant with IEC 60034-1 insulation class F.

Sample Compatibility & Compliance

The MP-2 accommodates specimens ranging from 10 mm to 50 mm in diameter when mounted in standard metallographic holders (e.g., cold-mounting phenolic or acrylic resins). It supports both wet and dry preparation modes, with optional splash guards and drip trays for aqueous coolant use. All structural components meet RoHS Directive 2011/65/EU material restrictions. The device is suitable for labs operating under GLP conditions where equipment qualification (IQ/OQ) documentation is required; its fixed-speed design eliminates variability associated with variable-frequency drives, simplifying validation protocols per ISO/IEC 17025 Clause 6.4.1.

Software & Data Management

The MP-2 operates as a standalone mechanical instrument without embedded firmware or digital connectivity. No software installation, calibration certificates, or electronic audit trails are provided—consistent with Class I laboratory equipment per FDA 21 CFR Part 11 definitions. Process parameters (speed, time, pressure via manual holder loading) are recorded manually in lab notebooks or LIMS-integrated log sheets. For traceability, users are advised to document platen usage, consumable lot numbers, and operator ID alongside each preparation batch—supporting root-cause analysis during SEM/EDS or hardness testing discrepancies.

Applications

• Preparation of cross-sections for optical microscopy (OM) and scanning electron microscopy (SEM) of ferrous and non-ferrous alloys, composites, and sintered ceramics.
• Routine quality control in foundries and heat-treatment facilities requiring adherence to ASTM E407 (etching) and ASTM E112 (grain size) standards.
• Geological thin-section fabrication for petrographic analysis, including brittle rock matrices and mineral aggregates.
• Failure analysis workflows where preservation of near-surface microstructure (e.g., decarburization, case depth, coating integrity) demands precise removal-rate control.
• Academic research labs performing comparative studies on abrasive wear behavior, phase transformation kinetics, or interfacial adhesion strength.

FAQ

Is the MP-2 compatible with automatic sample holders or force-controlled polishing systems?
No—the MP-2 is a manually loaded, fixed-speed unit. It does not integrate with motorized specimen arms or programmable downforce modules.
Can both platens operate simultaneously during a single preparation cycle?
Yes, both motors run concurrently, enabling parallel processing of two samples or sequential grinding-polishing within one setup.
What electrical certifications does the MP-2 carry?
It complies with GB 4706.1-2005 (Chinese national standard for household and similar electrical appliances) and meets CE marking requirements for EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU when supplied through authorized EU distributors.
Does WEIYEE provide IQ/OQ documentation or calibration services?
Documentation templates for installation and operational qualification are available upon request; field calibration of rotational speed is verified using traceable handheld tachometers (NIST-traceable, ±0.5% accuracy).
Are replacement platens and mounting hardware available separately?
Yes—standard M12 threaded platen adapters, stainless steel backing plates, and O-ring seals are stocked and shipped globally under part numbers MP-PLT-203 and MP-ADP-M12.