Production method for molten-aluminum-plated copper wire

Abstract

A production method for molten-aluminum-plated steel wire, the production method being characterized in that a steel wire ( 2 ) immersion part ( 6 ) at which the steel wire ( 2 ) is to be immersed in a molten aluminum plating bath ( 1 ) is immersed in the molten aluminum plating bath ( 1 ) after the steel wire ( 2 ) has been passed into a steel wire introduction device ( 7 ) while an immersion region ( 9 a ) thereof has been immersed in the molten aluminum plating bath ( 1 ). The steel wire introduction device ( 7 ) comprises a tube-shaped body ( 9 ), which has a total length of 10 to 1000 mm and has a through hole ( 8 ) that is for passing the steel wire ( 2 ) through the inside thereof, and includes the immersion region ( 9 a ), which is for immersion in the molten aluminum plating bath ( 1 ) to a length of 2 mm to 400 mm from an end part of one end of the tube-shaped body ( 9 ) along the long direction of the tube-shaped body ( 9 ). The ratio of the area of the opening of the through hole ( 8 ) and the area of a horizontal cross-section of the steel wire ( 2 ) (the area of the opening of the through-hole ( 8 ) of the tube-shaped body ( 9 )/the area of the horizontal cross-section of the steel wire ( 2 )) is 3 to 4000.

1 . A method for producing a hot-dip aluminum-coated steel wire by dipping a steel wire in molten aluminum, and then continuously drawing up the steel wire from the molten aluminum, to produce a hot-dip aluminum-coated steel wire, comprising:
 introducing a steel wire into a steel wire-introducing device comprising a tubular body of 10 mm to 1000 mm in total length having a through hole for introducing a steel wire into the tubular body, and a dipping region of 2 mm to 400 mm in length from one end part of the tubular body in a longitudinal direction of the tubular body for dipping the dipping region in the molten aluminum, wherein a value of the ratio of an area of the opening part of the through hole to an area of the cross section of the steel wire which is used in hot-dip aluminum plating [area of the opening part of the through hole of the tubular body/area of the cross section of the steel wire] is 3 to 4000, under a condition that the dipping region of the steel wire-introducing device is dipped in the molten aluminum, and thereafter dipping the steel wire in the molten aluminum.   
     
     
         2 . The method for producing a hot-dip aluminum-coated steel wire according to  claim 1 , wherein the steel wire is a steel wire made of stainless steel or carbon steel. 
     
     
         3 . A steel wire-introducing device used in a dipping area of a steel wire where the steel wire is dipped in molten aluminum when a hot-dip aluminum-coated steel wire is produced by dipping the steel wire in the molten aluminum, and then continuously drawing up the steel wire from the molten aluminum, comprising a tubular body of 10 mm to 1000 mm in total length having a through hole for introducing a steel wire into the tubular body, and a dipping region of 2 mm to 400 mm in length from one end part of the tubular body in a longitudinal direction of the tubular body for dipping the dipping region in the molten aluminum, wherein a value of the ratio of an area of the opening part of the through hole to an area of the cross section of the steel wire which is used in hot-dip aluminum plating [area of the opening part of the through hole of the tubular body/area of the cross section of the steel wire] is 3 to 4000.