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Double-disc grinding on sus 303 stainless steel

2003

We are using double-disc grinding to achieve flatness & parallelism of 0.7 micron. However, when the grinding period is long, the revolution/micron is increase. This means 20 revolution/micron at start, and after a period we may get 35 to 40 revolution/micron. This will increase the cycle time. The material of workpiece is sus303 , and abrasive material is silicon carbide. Dressing will be done when the revolution/micron is increase, however sometimes it does not works. Pressure for upper plate is adjusted increase and increase but when it reached 2.0 the parallelism & flatness will exceed 0.7 micron. Please advice how to solve this.

Thank you.

Your sincerely,

Tan Foo Tat
- Bayan Lepas, Penang, Malaysia

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I am reluctant to offer you any suggestions because there are just too many unknowns. There are at least 3 factors at work here. I'd check things out in this order. Check to see if machine is operating correctly within the specs it is designed. Check the size and concentricity of the contact abrasive. Check the lubricant and its flow.

AF Kenton
retired business owner - Hatboro, Pennsylvania
2003