Burning While Grinding
Burning While Grinding
(OP)
We have been creep feed grinding parts for months now on some casting parts and everything has been running well until recently. The parts have been showing burning along some of the edges. The grinding wheel is fairly new, coolant is ok, and the program and dressing has not been changed. We have to dress the wheel every fourth part to keep proper form and dimensions and usually the third part shows little or no burn, but the first and second part after dress show unacceptable burning. It is only a cosmetic issue, but we need to stop it. Any ideas?





RE: Burning While Grinding
Questions:
Is the wheel the same in ALL respects, type, manufacturer, bond, etc?
How do you determine that "coolant is ok"? If nothing has changed with the coolant (see q1), then has your water source changed (assuming water soluble?
How is coolant distrbution managed, how do you control where it hits the part/wheel?
New operator?
Fixture change?
Sorry if some of there seem so elementary but as my old buddy Charlie used to say "The answer has got to be something so simple that we'll al say 'DUH' when we find it.
Griffy
RE: Burning While Grinding
RE: Burning While Grinding
RE: Burning While Grinding
RE: Burning While Grinding
jck26
RE: Burning While Grinding
Sorry if this seems too elementary but where is your coolant hitting the part and wheel? Jck26's notion of spoiling airflow made me wonder about this.
If your wheel is not carrying enough coolant into the cut it might explain why your wheel is loading. Coolant after the cut(on top of the Part?) may cool the part but may be flung from the wheel by the time a given section of the wheel reengages the material.
Griffy
RE: Burning While Grinding