Hefei Kejing SYJ-50 Metallographic Sample Cutting Machine

Overview

The Hefei Kejing SYJ-50 Metallographic Sample Cutting Machine is a precision-engineered benchtop cutting system designed for reproducible, thermally controlled sectioning of metallurgical, ceramic, and polymeric specimens prior to mounting, grinding, and polishing. It operates on the principle of abrasive cutoff using a high-speed rotating thin-section resin-bonded silicon carbide or aluminum oxide wheel—optimized for minimal heat generation and reduced microstructural alteration. The machine’s rigid cast-iron base, stainless-steel work surface, and fully enclosed cutting chamber ensure dimensional stability and operator safety during extended use in QA/QC laboratories, R&D facilities, and academic metallography labs. Compliance with CE marking confirms adherence to EU Machinery Directive 2006/42/EC requirements for mechanical safety, electrical protection, and noise emission limits.

Key Features

• High-torque induction motor delivering consistent 2800 rpm rotation under load—ensuring clean, low-deformation cuts across ferrous and non-ferrous alloys, sintered ceramics, and epoxy-impregnated composites.
• Dual quick-action clamping system with adjustable vise jaws and angular positioning capability—enabling secure fixation of irregular geometries including crankshafts, valve bodies, turbine blades, and threaded fasteners without slippage or vibration-induced deviation.
• Integrated multi-port coolant distribution manifold with six independently directed nozzles—providing uniform, laminar water flow over the cutting interface to suppress localized thermal spikes (>300 °C) that may induce phase transformation, martensitic rehardening, or plastic deformation in sensitive microstructures.
• Tempered transparent polycarbonate observation window rated to EN 166:2002—offering full visual access to the cut zone while maintaining impact resistance against wheel fragmentation and splash containment per ISO 13857.
• LED-illuminated cutting chamber with IP65-rated fixtures—eliminating shadow zones and enabling real-time assessment of kerf width, cut depth, and wheel wear progression during manual feed operation.
• Corrosion-resistant 304 stainless-steel tabletop with integrated drainage trough and removable splash guard—facilitating rapid cleanup and compatibility with acidic or alkaline cleaning agents used in post-cut decontamination protocols.

Sample Compatibility & Compliance

The SYJ-50 accommodates specimens up to 60 mm in diameter and 120 mm in length, supporting standardized specimen geometries defined in ASTM E3-22 (Standard Guide for Preparation of Metallographic Specimens) and ISO 14971 (Risk Management for Medical Devices). It is routinely deployed for sectioning aerospace-grade Inconel 718, biomedical Ti-6Al-4V implants, WC-Co cemented carbides, and alumina-based technical ceramics. All electrical components conform to IEC 61000-6-2/6-4 for electromagnetic compatibility, and the enclosure meets EN 60204-1 for electrical safety in industrial machinery. Optional recirculating coolant pump (model CP-120) enables closed-loop operation compliant with ISO 14001 wastewater reduction targets.

Software & Data Management

As a manually operated mechanical cutter, the SYJ-50 does not incorporate embedded firmware or digital control interfaces. However, its operational parameters—including feed rate, coolant pressure, and cycle count—are documented in laboratory notebooks or LIMS-integrated electronic logbooks per GLP (Good Laboratory Practice) Annex 11 and FDA 21 CFR Part 11 requirements when used in regulated environments. Calibration records for motor speed (verified via handheld tachometer), coolant flow rate (measured with calibrated rotameter), and clamping force (validated using torque-testing fixture) are maintained as part of instrument qualification (IQ/OQ/PQ) packages.

Applications

• Routine cross-sectional preparation of rolled steel coupons for grain size analysis per ASTM E112.
• Sectioning of additively manufactured (AM) metal parts to expose build layers and detect porosity or lack-of-fusion defects.
• Preparation of ceramic matrix composite (CMC) specimens for SEM-EDS elemental mapping and interfacial bond characterization.
• Cutting of encapsulated electronic packaging substrates (e.g., AlN, BeO) without inducing thermal cracking or delamination.
• Controlled thickness reduction of geological thin sections prior to transmission electron microscopy (TEM) lift-out.

FAQ

Is the SYJ-50 suitable for cutting hardened tool steels (e.g., AISI D2, H13)?

Yes—when paired with diamond-impregnated or reinforced alumina cutting wheels rated for >60 HRC materials, and operated at recommended feed rates with continuous coolant flow.
Can the machine be integrated into an automated sample prep line?

No—the SYJ-50 is a standalone manual-feed system; however, its footprint and mounting holes allow integration into custom gantry-mounted robotic handling cells with third-party motion controllers.
What maintenance intervals are recommended for long-term reliability?

Motor bearings require relubrication every 2,000 operating hours; cutting wheel flanges should be inspected for runout prior to each wheel change; coolant lines must be flushed quarterly to prevent calcium deposit buildup.
Does the CE marking cover RoHS compliance?

Yes—the device complies with Directive 2011/65/EU (RoHS 2) as verified by material declarations from all Tier-1 component suppliers.
Are replacement wheels available with alternative bond types (e.g., vitrified, metal)?

Standard supply includes resinoid-bonded wheels; vitrified and electroplated diamond variants are available upon request with lead-time confirmation and compatibility validation.