Process method for solving thread gap problem in process of screw-thread steel threading

A process method and technology of rebar, applied in threaded products, manufacturing tools, bending workpieces, etc., can solve problems such as thread gaps, and achieve the effects of increasing spacing, stable material type, and reducing the number of transverse bars

Inactive Publication Date: 2019-04-12
YANCHENG LIANXIN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a technological method to solve the problem of gaps in threaded steel threads during the threading process, which ensures uniform filling on both sides of the longitudinal reinforcement and stable dimensions of the entire length.

Method used

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  • Process method for solving thread gap problem in process of screw-thread steel threading
  • Process method for solving thread gap problem in process of screw-thread steel threading
  • Process method for solving thread gap problem in process of screw-thread steel threading

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Embodiment Construction

[0022] The technical method for solving the problem of notches in the screw thread during the threading process of rebar, which includes the following process:

[0023] Add an automatic intelligent temperature control system to control the heating temperature difference between the billet and the section to be less than 30°C;

[0024] Replace rolls and rolling grooves in time to ensure the stability of the material entering the finished rolling mill;

[0025] Strictly control the height of the looper;

[0026] Reduce the oblique angle α of the rebar cross bar;

[0027] Increase the spacing L of rebar cross bars.

[0028] Among them, the specific steel passing control parameters of the roll and the rolling groove are shown in Table 1:

[0029] Table I

[0030]

[0031] Furthermore, the heating temperature of the steel billet is divided into the initial section temperature, the heating section temperature, the soaking section temperature and the tapping temperature. The h...

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Abstract

The invention relates to the technical field of steel rolling, in particular to a method for solving thread gap problem in a process of screw-thread steel threading. The process method includes the following processes: adding an automatic intelligent temperature control system to control the heating temperature difference lower than 30 DEG C between the billets strips and the billets sections; replacing a roller and a groove in time to ensure stability of the steel shape into a finisher; strictly controlling the loop rising height; reducing the bevel angle alpha of a transverse bar of screw-thread steel; and increasing the transverse bar spacing L of the screw-thread steel. The process method ensures a fullness balance in two sides of a longitudinal bar, ensures stability in ruler size, and solves the gap problem in the process of the screw-thread steel threading.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a process method for solving the problem of notches in threaded buckles during the threading process of threaded steel. Background technique [0002] Sleeves are used as connecting parts between steel bars, and are generally made of threaded steel through threading. However, there are often gaps in the threads of the threaded steel during the threading process, resulting in loosening of the steel bars connected by the sleeve. After repeated research and experiments, it was found that the main reason for the gaps in the threads of the rebar in the process of threading is due to the unevenness of the filling on both sides of the longitudinal reinforcement of the rebar and the unstable size of the finished steel, especially the large Specifications of rebar are more prone to such defects. Contents of the invention [0003] The technical problem to be solved by the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/74B21H3/02B21B41/00
CPCB21B37/74B21B41/00B21H3/02
Inventor 谢锦官陈春荣谢吉祥曾锦刁承民陈小平刘燊赵根社
Owner YANCHENG LIANXIN IRON & STEEL CO LTD
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