The difference between the new coal and rock sample preparation method and the traditional method
2023-08-12 09:37The difference between the new coal and rock sample preparation method and the traditional method
Serial number | Traditional method | New Rapid Sample Preparation Method |
1 | Traditional cold forming: using epoxy resin, etc.,. Molding time is about 2-6 hours/sample. | New cold forming: using new binder and curing agent. The molding time is about 2 minutes/sample. |
2 | Traditional thermoforming: using shellac sheets, etc., inlaid in a heating mosaic machine. The time is about 30 minutes/sample. | New thermoforming: using a special hand-held melting device for coal and rock + a simple pressurizing machine, combined with special mosaic powder for coal and rock. The molding time is about 2-3 minutes/sample. |
3 | Traditional pre-grinding method: use emery powder of different meshes with pre-grinding machine and frosted glass plate, the grinding time is long, 30 minutes/sample or more, and prone to scratches, oil residue and other unqualified conditions. | New pre-grinding method: adopt the simple water sandpaper pre-grinding method of one-step process, cooperate with manual or automatic grinding and polishing machine, the speed is fast, 1-2 minutes/sample, the sample pass rate is high. |
4 | Traditional polishing method: using chromium oxide etc. as the polishing material, the polishing time is long and it is not easy to clean. After polishing, it must be cleaned with an ultrasonic cleaner for a long time, and often the samples are unqualified and need to be repeatedly polished. It is very difficult to make a qualified sample light sheet. | New polishing method: use special nano-scale polishing agent for coal and rock, cooperate with manual or automatic grinding and polishing machine, the speed is fast, 1-2 minutes/sample. Sample pass rate is high. |
5 | Traditional optical film cleaning method: using filter paper to dry or suction ear balls and hair dryer to dry, it is easy to have stain residue, which makes the sample undetectable. | New light sheet cleaning method: a special purging machine for blending coal and rock light sheets, quickly blowing away residual stains and moisture. Sample pass rate is high. |