The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2023
Filed:
Sep. 28, 2020
Manchao He, Beijing, CN;
Min Xia, Beijing, CN;
Manchao He, Beijing, CN;
Min Xia, Beijing, CN;
Hongyan Guo, Beijing, CN;
Hongchao Li, Hebei Province, CN;
Min Xia, Beijing, CN;
Abstract
A processing method of NPR steel rebar rod is disclosed. The NPR steel rebar is cold processed and has a yield strength of 800˜950 MPa, a tensile strength of 900˜1100 MPa, and a percentage elongation at maximum force of not less than 10˜40%. The processing method comprises the following steps: a I-shaped placing step L, an uncoiling step L, a flattening step L, a butt welding step L, a sandblasting step L, a straightening step L, a pointing step L, a hydraulic head-pushing step L, a cold drawn spiral ribbing step L, a straight forward continuous wire drawing and traction step L, a pre-straightening step L, a fine straightening step L, and a cutting-off step L. The processing method can meet the automatic intelligent production requirements of NPR steel rebar, cold rolled spiral NPR steel rebar, and pre-stressed NPR steel rebar.