7 MAINTENANCE & REPAIR
7-16
and permeability are less good.
3) Transparent water-solubility coolant
Mainly with chemical treatment chrome acid sodium such as inorganic
ammonium, dissolves into water and apears transparent which develops
anti-solubility and resst prevention with good grinding effect. It’s suitable for
cast iron and cast steel.
2.
Non water-solubility grinding liquid
Mainly with light mineral oil, mixes with sulfur fatty oil or chlorine
sulfurfatty oil which has good lubrication including active and inactive. If
added with sulfur, chlorine such as extreme pressure additives, it can
effectively reduce grits worn and torn and prevent grinding wheel’s holes
from being clogged, which may reduce heating. Hence, this is suitable for
precisin grinding and better for aluminum workpiece. Be ware of its
inflammability and hygiene.
3.
Water
Water is good for cooling but lessgood for lubrication. It may cause rest
formetalworkpieces. Underspecial conditions, it’s used for grinding in
porcelain and glass fiber but do not apply the used-water. The used grinding
liquidshould be treated according to general standard industrial wastewater
treatment, such as chemical treatment (by acid-base treating method) or
burned ash in order to avoid water pollution.
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Industrial
USA
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