Process for multicoat finishing
1
Alpha alumina-based ceramic abrasive grain comprismg, on a theoretical oxide basis, A1203. SiO,: and at least 0.25% by weight Fe,O,, havmg alpha alumina crys- tallites with an average crystallite size of less than 0.5 micrometer; said abrasive grain having a surface roughness height of greater than 200 nanometers and a density of greater than 3.5 g/cm?. Electroplating Process U.S. Patent 5,611,905. Mar. 18, 1997 SM. Florio ef al. asmgnors to Shipley Co. UC.. Mar/borough, Mass. A process for depositing metal on a sub- strate having metallic and nonmetallic re- gions comprising providing an aqueous dispersion of carbonaceous particles con- taining an etchant for the metallic regions in an amount of 0.1 to 10% by weight of the dispersion; contacting the substrate with the dispersion to form a coating over all surfaces of the substrate and simulta- neously dissolve the top surface of the me- tallic regions: removing carbonaceous coating from the metallic regions of the substrate; and electroplating metal on the substrate from an electrolytic metal plating solution. Surface Treatment of Parts U.S. Patent 5,612,#8. Mar. 18, 1997 RF: i’echer, Huntingdon Valley, Pa. A method of surface treatment of parts with liquid baths comprising cleaning in a first treatment tank; transferring by first conveyor means to a second conveyor means: next immersing the parts trans- ferred to the second conveyor means in a treatment tank containing a liquid bath of treatment solution and tumbling the parts within the liquid bath; transferring the tum- bled parts out of the treatment tank onto a third conveyor means in a rinse tank con- taining rinsing solution and subjecting the parts to a rinsing action utilizing the rinsing solution; allowing the parts on the third conveyor to drain: recapturing the drained solution within the rinse tank; and dis- charging the parts on the third conveyor from the rinse tank. Process for Multicoat Finishing U.S. Patent 5,612,095. Mar. 18, 1997 T. Brock and K. Wandelmaier, assignors to Herberfs GmbH, Wuppertal, Germany A process for applying a multicoat finish to a substrate, which comprises applying to the substrate a basecoat layer containing waler, a binder, a pigment, and optionally an organic solvent, a neutralizing agent, and an additive, wherein the binder com- prises 85 to 99.5Y0 by weight based on the solids content of the binder of an aqueous, physicallly drying polyurethane binder and 0.5 to 15% of a polyisocyanate that is liquid at room temperature or is liquefied by an organic solvent, &herein the polyiso- cyanate is mixed with the basecoat before application to the substrate: and applying a clearcoat containing an organic solvent over the aqueous basecoat while the latter is still wet or after it has dried. Apparatus for Applying Powder to Workpieces U.S. Patent 5.612J9.5. Mar. 18, 1997 D.C. Muider et ab, assignors fo Nor&on Corp.. Westlake, Ohio A method of sequentially applying powder to each article of a plurality of articles rorming a series of pulses or air with powder entrained therein, sequentially conducting each of the pulses of ti with powder entrained therein along a flow path through a spray gun toward a workstation where powder is applied to each of the atticles in turn, and sequentially divetig a portion of each of the pulses of air with powder entrained therein hnrn the flow path through the spmy gun to sharply define an edge portion of each of the pulses of air with powder entrained therein. Apparatus for Coating a Substrate US. Patent 5,612,099. Mar. 18, 1997 S.L. Thaler, assignor to McDonnell Doug/as Corp., St Louis, MO. A method of coating a surface of a sub- strate comprising suspending a coating ma- Circle 039 on reader information card Circle 069 on reader information card METAL FINISHING ?? NOVEMBER 1997 127
Transcript of Process for multicoat finishing
Alpha alumina-based ceramic abrasive grain comprismg, on a theoretical oxide basis, A1203. SiO,: and at least 0.25% by weight Fe,O,, havmg alpha alumina crys- tallites with an average crystallite size of less than 0.5 micrometer; said abrasive grain having a surface roughness height of greater than 200 nanometers and a density of greater than 3.5 g/cm?.
Electroplating Process U.S. Patent 5,611,905. Mar. 18, 1997 SM. Florio ef al. asmgnors to Shipley Co. UC.. Mar/borough, Mass.
A process for depositing metal on a sub- strate having metallic and nonmetallic re- gions comprising providing an aqueous dispersion of carbonaceous particles con- taining an etchant for the metallic regions in an amount of 0.1 to 10% by weight of the dispersion; contacting the substrate with the dispersion to form a coating over all surfaces of the substrate and simulta- neously dissolve the top surface of the me- tallic regions: removing carbonaceous coating from the metallic regions of the substrate; and electroplating metal on the substrate from an electrolytic metal plating solution.
Surface Treatment of Parts U.S. Patent 5,612,#8. Mar. 18, 1997 RF: i’echer, Huntingdon Valley, Pa.
A method of surface treatment of parts with liquid baths comprising cleaning in a first treatment tank; transferring by first conveyor means to a second conveyor means: next immersing the parts trans- ferred to the second conveyor means in a treatment tank containing a liquid bath of treatment solution and tumbling the parts within the liquid bath; transferring the tum- bled parts out of the treatment tank onto a third conveyor means in a rinse tank con- taining rinsing solution and subjecting the parts to a rinsing action utilizing the rinsing solution; allowing the parts on the third conveyor to drain: recapturing the drained solution within the rinse tank; and dis- charging the parts on the third conveyor from the rinse tank.
Process for Multicoat Finishing U.S. Patent 5,612,095. Mar. 18, 1997 T. Brock and K. Wandelmaier, assignors to Herberfs GmbH, Wuppertal, Germany
A process for applying a multicoat finish to a substrate, which comprises applying to the substrate a basecoat layer containing waler, a binder, a pigment, and optionally an organic solvent, a neutralizing agent, and an additive, wherein the binder com- prises 85 to 99.5Y0 by weight based on the solids content of the binder of an aqueous, physicallly drying polyurethane binder and 0.5 to 15% of a polyisocyanate that is
liquid at room temperature or is liquefied by an organic solvent, &herein the polyiso- cyanate is mixed with the basecoat before application to the substrate: and applying a clearcoat containing an organic solvent over the aqueous basecoat while the latter is still wet or after it has dried.
Apparatus for Applying Powder to Workpieces U.S. Patent 5.612J9.5. Mar. 18, 1997 D.C. Muider et ab, assignors fo Nor&on Corp.. Westlake, Ohio
A method of sequentially applying powder to each article of a plurality of articles rorming a series of pulses or air with powder entrained
therein, sequentially conducting each of the pulses of ti with powder entrained therein along a flow path through a spray gun toward a workstation where powder is applied to each of the atticles in turn, and sequentially divetig a portion of each of the pulses of air with powder entrained therein hnrn the flow path through the spmy gun to sharply define an edge portion of each of the pulses of air with powder entrained therein.
Apparatus for Coating a Substrate US. Patent 5,612,099. Mar. 18, 1997 S.L. Thaler, assignor to McDonnell Doug/as Corp., St Louis, MO.
A method of coating a surface of a sub- strate comprising suspending a coating ma-
Circle 039 on reader information card Circle 069 on reader information card
METAL FINISHING ?? NOVEMBER 1997 127
