Title:
NPR STEEL REINFORCEMENT BAR TREATMENT PROCESS
Document Type and Number:
WIPO Patent Application WO/2021/032215
Kind Code:
A1
Abstract:
An NPR steel reinforcement bar treatment process, the NPR steel reinforcement bar being cold worked, and the NPR steel reinforcement bar having a yield strength of 800 MPa - 950 MPa, a tensile strength of 900 MPa - 1100 MPa, and a percentage of extension at maximum force of ≥ 10-40%. The steps of the treatment process comprise: I-shaped material feeding processing L20: uncoiling processing L30: leveling processing L40; butt welding processing L50; sand blasting processing L60; straightening processing L70; pointing processing L80; hydraulic pushing processing L90; cold-drawn spiral processing L10; in-line continuous wire drawing pulling processing L11; pre-straightening processing L12; fine straightening processing L13; and cutting processing L14. The treatment process is able to satisfy the requirements for fully-automatic smart production of NPR steel reinforcement bars, NPR cold rolled spiral steel reinforcement bars, and NPR pre-stressed steel reinforcement bars.
Inventors:
HE MANCHAO (CN)
XIA MIN (CN)
GUO HONGYAN (CN)
LI HONGCHAO (CN)
XIA MIN (CN)
GUO HONGYAN (CN)
LI HONGCHAO (CN)
Application Number:
PCT/CN2020/118267
Publication Date:
February 25, 2021
Filing Date:
September 28, 2020
Export Citation:
Assignee:
HE MANCHAO (CN)
XIA MIN (CN)
XIA MIN (CN)
International Classes:
B23P15/00; B21C5/00
Foreign References:
| CN110524192A | 2019-12-03 | |||
| CN101823086A | 2010-09-08 | |||
| CN1398683A | 2003-02-26 | |||
| CN201012451Y | 2008-01-30 | |||
| CN101269397A | 2008-09-24 | |||
| CN102061370A | 2011-05-18 | |||
| CN207272039U | 2018-04-27 | |||
| CN109013741A | 2018-12-18 | |||
| JP2000197939A | 2000-07-18 |
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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