HMP-3 Automatic Metallographic Grinding and Polishing Machine

2025-08-21

Overview

The HMP-3 Automatic Grinding and Polishing Machine is a single-disk bench-top unit. As a new-generation high-precision automatic sample preparation device, it is manufactured in accordance with international standards and advanced processing technology.

Equipped with a microprocessor control system, the machine enables stepless speed adjustment for both the grinding/polishing disk and head. The sample preparation pressure and time can be set intuitively and conveniently. Operators can complete grinding and polishing processes simply by replacing the grinding/polishing disk, sandpaper or polishing cloth, granting the machine extensive applicability.

The machine features selectable rotation direction and quick-change design for the grinding/polishing disk; multi-sample holder and pneumatic single-point loading; and automatic abrasive dispensing (dispenser is optional). It also delivers stable rotation, low noise, and enhanced grinding rigidity thanks to the cast-aluminum base.

The integrated water cooling system and abrasive flushing nozzles cool specimens during grinding to prevent overheating damage to metallographic microstructures and remove abrasive particles timely. With a fiberglass-reinforced plastic enclosure and stainless steel standard parts, the machine features an elegant appearance, improved anti-corrosion and anti-rust performance, and easy cleaning.

The HMP-3 Automatic Grinding and Polishing Machine is designed for automatic preparation of metallographic specimens from coarse grinding, fine grinding, rough polishing to final polishing. It is an ideal sample preparation instrument for laboratories in enterprises, research institutions and universities.

Main Technical Specifications

Grinding/Polishing Disk Diameter: φ250mm (φ203mm, φ300mm available on request)

Grinding/Polishing Disk Speed: 50–1000r/min (stepless speed regulation); 150r/min, 300r/min (two fixed speeds)

Grinding/Polishing Disk Rotation Direction: Clockwise or counterclockwise adjustable

Grinding/Polishing Head Speed: 50–150r/min (stepless speed regulation)

Loading Range: 5–60 Newtons (N)

Standard Sample Capacity: 6 pieces

Sample Preparation Time: 0–995 seconds (S)

Standard Specimen Diameter: Φ30mm; customizable: Φ22mm, Φ25mm, Φ30mm, Φ40mm, Φ45mm, Φ50mm

Compressed Air Pressure: 0.6–0.9MPa

Input Voltage: Single-phase AC220V 50Hz

Input Power: 1.1KW

Overall Dimensions: 594×795×687mm

Net Weight: 98kg

Gross Weight: 125kg