SPOOL FOR WINDING WELDING WIRE AND ITS PRODUCTION

• Main Authors: FUJII SHIZUO, NARIAI TETSUO, TAKAGI ATSUTOSHI, OOI JIYUNJI, NAKAI KOUZOU
• Format: Patent
• Language: English
• Published: 02.11.1984
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CLADDING OR PLATING BY SOLDERING OR WELDING; CONVEYING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PACKING; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SOLDERING OR UNSOLDERING; SPRAYING OR ATOMISING IN GENERAL; STORING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

PURPOSE:To obtain a spool which is provided with an excellent insulating characteristic and a rust preventive effect by forming a polyolefin film via a carbide layer on the surface of the metallic wire rod of a titled spool called briefly as a cage spool. CONSTITUTION:Spool elements (a)-(h) formed by bending a wire rod 1 are arranged into a circular shape and the radial rims of the adjacent elements are joined to each other to obtain a cage spool. The spool is charged into a fluidized bed of polyolefin powder and granules 4 formed of the gas flowing upward through a dispersing plate 5 on a meshed plate 3 of a painting device 2. The spool K is preliminarily heated to the carbonizing temp. of the powder and granules 4 or above. Then the powder and granules are touched, melted and stuck on the surface of the spool to cover the entire surface of the spool. The powder and granulues 4 sticking on the surface of the spool are further coated with a polyolefin layer P sticking thereon and are carbonized by the waste heat possessed by the spool thus forming a carbide layer C. The source adhesion between the wire rod 1 and the layer P is obtd. by the layer C intervened therebetween.