Summary of the tie-in technology of taper thread of reinforcing bars used in Shanxi International Trade Center;

The two-strands slit rolling technology for Φ18mm ribbed bar which was the big specification was designed by this paper according to the real situation of one steel plant’s bar producing line, the pass system and guide unit equipments of slit rolling were chosen and designed in detail.

A method for online tension measuring during cold rolling of ribbed bars is described.

There are a huge uses of hot rolled ribbed bars in our country.

Combined with the production process and quality of the small size HRB335 (20MnSi)ribbed bars made in High-speed Wire Factory, Tangshan Iron and Steel Group Co.

Three types of ribbed bars with diameter of 18,22 and 25 mm respectively were tested,and the "position effect" was in fact confirmed.

The essay briefly introduces the water cooling technology applied in the manufacturing process of the hot-rolled ribbed bars of 20MnSiNb.

Effect of martensite layer thickness of rebar surface on its mechanical properties;

The model of heat transfer coefficient during rebar cottrol cooling;

Tianjin Iron and Steel Company Limited applies LTR quench cooling process to substitute QTB waste heat treatment process and succeeds in producing 460B BS rebar (ф50mm) in bar production line in a large scale for the first time.

The structure characteristics and experimental analysis of the produce line of cold-rolling screw thread steel reinforcing bar;

This study discusses the economic and society benefits of popularizing and using the Y small diameter cold-rolling screw thread steel reinforcing bar in the enterprises by analyzing the technology parameters,the structure characteristic and the principle and the technology economic of the small diameter cold-rolling screw thread steel reinforcing bar.