Title:
METHOD FOR MANUFACTURING THIN-DIAMETER WIRE OF HIGH- SPEED TOOL STEEL
Document Type and Number:
Japanese Patent JP3632907
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a thin-diameter wire of high- speed tool steel hardly causing voids in the center part of the material and excellent in the tool life of a cutting tool or the like.
SOLUTION: The thin-diameter wire of the high-speed tool steel is manufactured by drawing the high-speed tool steel in one-pass wire drawing process consisting of one-pass wire cold-drawing stage and an annealing stage. In the wire cold-drawing stage, the die angle of a die is defined as 10-20°, the length of bearing as (0.5+(wire drawing size D1/4)) to (2+(wire drawing size D1/2.5)) and also the reduction of area in the wire cold-drawing stage as 20-40%.
Inventors:
Akira Shimamoto
Application Number:
JP2000270664A
Publication Date:
March 30, 2005
Filing Date:
September 06, 2000
Export Citation:
Assignee:
Japan High Frequency Steel Industry Co., Ltd.
International Classes:
B21C3/02; B21C1/00; C21D8/06; C21D9/52; (IPC1-7): B21C3/02; B21C1/00; C21D8/06; C21D9/52
Domestic Patent References:
| JP61202717A | ||||
| JP4147713A |
Other References:
社団法人日本塑性加工学会,引抜き加工-基礎から先端技術まで-,日本,株式会社 コロナ社,1990年10月25日,p.54-55
Attorney, Agent or Firm:
Masanori Fujimaki