초록 ▼

An improved method and formulation is shown for preparing polishing media for superfinishing pure metal surfaces. A combination of hydrophobic and hydrophilic silicone surfactants is used to control the porosity and water absorption during use whereby durability is obtained and the catalyst concentr

An improved method and formulation is shown for preparing polishing media for superfinishing pure metal surfaces. A combination of hydrophobic and hydrophilic silicone surfactants is used to control the porosity and water absorption during use whereby durability is obtained and the catalyst concentration is regulated to control hardness to achieve durability without scratching the workpiece. Density is controlled by the quantity of mixture with which a closed mold is charged. To produce successful media it is also necessary to preheat the closed mold and to be certain that the resin mixture of particles, polyol and additives does not exceed 120 degrees F. prior to final mixture with isocyanate just before charging the mold and curing. Also a longer cure at a lower temperature enhances the qualities of the resulting polishing media.

대표청구항 ▼

The method of making a polishing pad for superfinishing metal substrate surfaces comprising fast mixing at a temperature of less than 120 degrees Fahrenheit the following ingredients in parts by weight: approximately 50 parts polyol approximately 100 parts abrasive particles 0.35 to 0.50 parts water

The method of making a polishing pad for superfinishing metal substrate surfaces comprising fast mixing at a temperature of less than 120 degrees Fahrenheit the following ingredients in parts by weight: approximately 50 parts polyol approximately 100 parts abrasive particles 0.35 to 0.50 parts water 0.95 to 1.05 parts hydrophobic silicone surfactant 0.05 to 0.2 parts hydrophilic silicone surfactant 0.8 to 0.9 parts catalyst; preheating a mold to 85 to 105 degrees Fahrenheit; mixing the above initial mixture with approximately 50 parts by weight of isocyanate to form a final mixture and delivering said final mixture to said preheated mold; and curing said final mixture for 25 minutes at a temperature not exceeding 275 degrees Fahrenheit.