Metallography
Metallography
Metallographic sample preparation is a sequential chain of processes whose quality determines whether microstructure analysis and hardness testing will give a reliable result. The steps: abrasive cutting (removing a sample from the part without thermal or deformation damage) → hot mounting in resin, so the sample is easy to hold and grind → grinding (planar and fine grinding with SiC paper or diamond discs) → polishing (diamond suspensions, oxide suspensions, vibratory polishing) → etching (chemical or electrolytic, to reveal the microstructure) → microscopy and hardness testing. QATM (Verder Scientific group, Germany) manufactures equipment and consumables for this entire chain – from benchtop laboratory instruments to fully automated robotic lines.
Intended for: materials science and quality laboratories, foundries, heat treatment and welding companies (macro sections of welds according to DIN EN ISO 5817), quality departments in the automotive and aerospace industries, universities and research institutes, electronics (PCB) and coating analysis.
How to choose:
Benchtop vs floor-standing equipment – depending on the maximum sample diameter (benchtop cut-off machines up to ~Ø135 mm, floor-standing up to Ø244 mm) and the cut-off wheel diameter.
Manual vs automatic – manual suits low sample volumes and training; automatic (with force control and program memory) ensures reproducibility and allows unattended operation.
Sample size and quantity – mounting mould diameter (Ø25–50 mm), sample holder capacity (e.g. 6ר40 mm or 6ר50 mm), one or two working wheels.
Material – hard materials and high loads require a more powerful drive and a pulse cutting mode.
In your enquiry please state: the materials to be examined (steel, Al, Cu, hard metals, ceramics, PCB), typical sample dimensions and number per day, the desired level of automation, the available power supply (1 or 3 phase), water/compressed air availability, and whether consumables are needed (cut-off wheels, resins, grinding paper, diamond suspensions).
