Definition of Sheet Polishing
Wide coated abrasive belts are utilized for the finishing and/or polishing of metal “in the flat” to remove defects, generate desirable surface finishes, or to prepare the sheets for picking to final gauge.
Stainless steel, for example, may be abraded with a relatively coarse (60-80) grit belt to remove surface imperfections such as pits, slivers, and handling marks, then polished with succeeding fine grit belts for the standard No. 3 to No. 8 stainless finishes.
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Bumper steel or bars are processed to remove rust, pits, slivers, etc., and brought to a 10-12 RMS finish by means of 15-head grinding lines. The bars are then formed into automobile bumpers, hand spotted where necessary to remove forming marks, and then chrome plated.
Titanium sheets are ground and polished prior to sale as polished sheets or to prepare the material for acid etch to final gauge.
Wide belt sheet polishing is also used to generate finishes on a wide variety of metal, from zinc engraver plates to aluminum sheets for computer cabinets.
Sheets are polished either wet (water soluble or straight oil) or dry (no coolant), or may be “headed” with a combination of oil mist and swarf.
Related Products
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• Wide belts
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Typical Machines
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| Machines used for sheet polishing fall into one of the following designs: pinch roll, reciprocating table, conveyor, or solid table. The coated abrasive grinding heads are similar on all four machines. The difference is either in the manner in which the plates are brought to the abrasive belt, e.g., conveyor vs. reciprocating table, or in the manner in which the plates are held in place while going through the grinding head, e.g., pinch rolls, clamps, etc. |
- Acme Mfg
- A.E.M
- Burlington
- Sanders
- Carbo-Curtis (Now Tannewitz)
- CEMCO
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- Grinding Master (Linden)
- Hill-Acme Co.
- IMEAS (Italy)
- Mattison
- Murray-Way (Purchased by Acme)
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- Olean Finishing
- RAMCO (Tannewitz)
- Sandingmaster (Holland)
- Tannewitz (RAMCO)
- Timesavers, Inc.
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Industrial Engineering Applications
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- Removal of surface imperfections
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