Manufacturing method of extra fine wire
AssigneeMitsubishi Kinzoku Kabushiki Kaisha
InventorsMasato Koide, Takuro Iwamura, Tsugio Koya
Life of this patent
Estimating the term…
Abstract
In a method of manufacturing an extra fine wire, a blank wire cooled to a low temperature is caused to pass through a high humidity atmosphere and, immediately thereafter, is drawn to a diameter such that wire breakage due to the drawing does not occur. Alternatively, a blank wire is caused to pass through a die assembly so arranged as to be immersed in refrigerant, and is drawn within the refrigerant of low temperature, to a diameter with which wire breakage due to the drawing does not occur. The drawn wire material is heated rapidly and is annealed and, thereafter, is cooled rapidly to form an intermediate blank wire. Subsequently, the intermediate wire is drawn at the ordinary temperature.
Claims12
A method of manufacturing an extra fine wire, comprising the steps of:
- (a) cooling a blank wire to a low temperature and passing said cooled wire through a high humidity atmosphere so that the low temperature imparted to the wire and the high humidity atmosphere cause a water coating to be formed on the wire, and subsequently drawing said blank wire to a diameter such that wire breakage due to the drawing does not occur;
- (b) heating the drawn blank wire rapidly to anneal the same and, thereafter, cooling the blank wire rapidly to form an intermediate blank wire;
- and
- (c) thereafter, drawing said intermediate blank wire at a ordinary temperature.
A method of manufacturing an extra fine wire comprising the steps of:
- (a) cooling a blank wire to a low temperature and passing said blank wire through a drawing die assembly immersed in refrigerant, and drawing said blank wire to a diameter such that wire breakage due to the drawing does not occur;
- (b) heating the drawn wire rapidly to anneal the same and, thereafter, cooling the blank wire rapidly to form an intermediate blank wire;
- and
- (c) thereafter, drawing said intermediate blank wire at a ordinary temperature.
Dependencies are inferred from the claim text.