Touch Screen Metallographic Grinding And Polishing Machine Four
Steps Speed Laboratory Grinder Machine
Technical Data Download:
iqualitrol
Grinding and Polishing Machine XGrind-312
Operation Manual Download:
iqualitrol
Operation Manual of XGrind-312
Brief Introduction:
iqualitrol Double disc XGrind-312 touch screen grinder polisher is
suitable for pre-grinding, grinding and polishing metallographic
specimens. Since the machine is speed-adjusted by a transducer, it
can get 150rpm, 300rpm, 600rpm, and 800rpm, which favors the
machine with wide applications.
The machine is equipped with cooling system which can cool down the
specimen during primary grinding so as to prevent overheating and
damage the metallographic structure .
Featuring easy operation and reliable performance, it is an
indispensable device for the factories, research institutions and
college labs to prepare metallographic specimen.
Technical Specifications:
| Model | XGrind-312 |
| Grinding/polishing disc diameter | φ250mm |
| Rotate speed: | 150rpm, 300rpm, 600rpm, and 800rpm |
| Input voltage | AC220V/50Hz/1Ph |
| Grinding/Polishing disc quantity | 2 |
| Motor Power Consumption | 550W |
| Dimension | 740mm x450mm x370mm |
| Net weight | 35kg |
Grinding, Fine Polishing:
After mounting, the specimen is wet ground to reveal the surface of
the metal. The specimen is successively ground with finer and finer
abrasive media. Silicon carbide abrasive paper was the first method
of grinding and is still used today.
Many metallographers, however, prefer to use a diamond grit
suspension which is dosed onto a reusable fabric pad throughout the
polishing process. Diamond grit in suspension might start at 9
micrometres and finish at one micrometre.
Generally, polishing with diamond suspension gives finer results
than using silicon carbide papers (SiC papers), especially with
revealing porosity, which silicon carbide paper sometimes "smear"
over.
After grinding the specimen, polishing is performed. Typically, a
specimen is polished with a slurry of alumina, silica, or diamond
on a napless cloth to produce a scratch-free mirror finish, free
from smear, drag, or pull-outs and with minimal deformation
remaining from the preparation process.
After polishing, certain microstructural constituents can be seen
with the microscope, e.g., inclusions and nitrides.
If the crystal structure is non-cubic (e.g., a metal with a
hexagonal-closed packed crystal structure, such as Ti or Zr) the
microstructure can be revealed without etching using crossed
polarized light (light microscopy).
Otherwise, the microstructural constituents of the specimen are
revealed by using a suitable chemical or electrolytic etchant.
