Patent ID: 6197736
Filing Date: 2001-03-06
Classification: C02F,Y10T

Abstract:
A process for descaling, derusting, and completely dissolving and removing machining lubricants coated on steel and other iron alloy objects, said process comprising the steps of:(a) providing an alkaline cleaning solution consisting essentially of water, about 10% to 95% by volume of the water-soluble descaling and a liquid deruster concentrate containing surfacants, complexors and 25.0-30.0% sodium hydroxide, and about 2% to 8% by weight of a water-soluble sequestering agent selected from the group consisting of sodium gluconate and its functional equivalents; and(b) contacting said object with said alkaline cleaning solution for about 15 to 35 minutes at a temperature of about 120.degree. F. to 140.degree. F., whereby said object is descaled, derusted, and said machining lubricant is completely dissolved and removed.