chubbyhubby
Plastic
- Joined
- Apr 9, 2011
- Location
- Illinois
Greetings All,
I'm curious how others grind plates flat after heat treating. I generally send out die blocks for heat treating, and of course, they are slightly warped afterwards. Normal sizes are anywhere from 6" x 6" x 1" up to 36" x 12" x 1 1/2". I usually put a sheet of newspaper on the chuck, and set the die block on it. Next, I turn the coolant on, so the paper absorbs it and expands, filling the voids between chuck and block. After the paper is soaked, I turn the magnet on to as low as possible, just to keep the part from launching off the chuck. I'll flatten the top face first. Next, I'll flip the part and use full magnet and grind normally after that. It usually works ok. One of my problems is that on large block, the paper in the center of the block is still dry, even after an hour of grinding. I guess the coolant just can't wick its way to the center. Does anyone wet the paper (sounds like my dog...) before they set the block on hte chuck? Not the way I learned, but was just wondering. Any other methods used out there? TIA, CH
I'm curious how others grind plates flat after heat treating. I generally send out die blocks for heat treating, and of course, they are slightly warped afterwards. Normal sizes are anywhere from 6" x 6" x 1" up to 36" x 12" x 1 1/2". I usually put a sheet of newspaper on the chuck, and set the die block on it. Next, I turn the coolant on, so the paper absorbs it and expands, filling the voids between chuck and block. After the paper is soaked, I turn the magnet on to as low as possible, just to keep the part from launching off the chuck. I'll flatten the top face first. Next, I'll flip the part and use full magnet and grind normally after that. It usually works ok. One of my problems is that on large block, the paper in the center of the block is still dry, even after an hour of grinding. I guess the coolant just can't wick its way to the center. Does anyone wet the paper (sounds like my dog...) before they set the block on hte chuck? Not the way I learned, but was just wondering. Any other methods used out there? TIA, CH