Title:
STEEL WIRE HAVING EXCELLENT STRAIGHTNESS QUALITY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/002560
Kind Code:
A1
Abstract:
The present invention relates to a steel wire having an excellent straightness quality and a method for manufacturing same. The steel wire having an excellent straightness quality comprises a wire which goes through, after going through a wire drawing step, a heating step in which the wire is heated in a state where tension is applied thereto, and then goes through a cooling step, wherein when the wire is wound around a winding part having a diameter larger than the diameter of the wire during a predetermined period and then the linearity of the wire configured to have length of 400 mm is measured, the linearity of the wire is 30 mm or less. A method for manufacturing a steel wire having an excellent straightness quality comprises a wire preparing step, a heating step, a cooling step, and a linearity measuring step.
More Like This:
Inventors:
PARK PYEONG YEOL (KR)
KIM GI HWAN (KR)
KIM GI HWAN (KR)
Application Number:
PCT/KR2020/003182
Publication Date:
January 07, 2021
Filing Date:
March 06, 2020
Export Citation:
Assignee:
HONGDUK IND CO LTD (KR)
International Classes:
C21D8/06; C21D9/573
Foreign References:
| KR101972456B1 | 2019-04-25 | |||
| KR20050011601A | 2005-01-29 | |||
| JP2003253342A | 2003-09-10 | |||
| JP2002180160A | 2002-06-26 | |||
| JP2001025815A | 2001-01-30 | |||
| KR102059095B1 | 2019-12-24 |
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (KR)
Download PDF:
Previous Patent: FLOATING STRUCTURE FOR WATER SOLAR POWER FACILITY
Next Patent: MICRONEEDLE CONTAINING SYMPLOCARPUS FOETIDUS EXTRACT
Next Patent: MICRONEEDLE CONTAINING SYMPLOCARPUS FOETIDUS EXTRACT