Listed below are problems, which may be encountered whilst grinding. Possible corrections are used advisedly here. It is practically impossible to establish hard and fast rules for turning out perfect grinding. There are many variables, which must be correctly attuned and an apparently irrelevant one may prove to be cause of trouble experienced. Also, the same cause may produce a varied number of grinding problems.
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Scratch Marks |
WHEEL LOADING - METAL LODGED ON GRAINS OR IN PORES
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Grinding
wheel too hard for particular work.
Use a coarser grained wheel with more open bond to
allow greater chip clearance. Increase coolant flow.
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Scale from hardened work, or dirty (oil, solder,
welding flux, etc.)
Clean work before grinding. Dress wheel more often.
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Incorrect dressing of grinding wheel
Turn diamond or replace with new one. Increase rate
when dressing.
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Stock removal too fast.
Check set-up. Take lighter cuts or infeed at slower
rate. Increase regulating wheel (work speed) to make
wheel act softer.
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Coolant incorrect or dirty.
Change coolant. If using soluble oil, use thinner
coolant, add soda, or if necessary filter coolant.
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Vibration |
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Chatter Marks |
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Low Ends |
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Low Centre |
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Not Straightened |
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Work Out of Round |
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Faulty Sizing |
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Wheel Loading |
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Wheel Glazed |
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Wheel Grading |
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Wheel Breakage |
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Maintenance Tips |
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