CN103447294A

CN103447294A - Process for rolling hot-rolled steel bars for anchor rod by adopting double-slitting technology

Info

Publication number: CN103447294A
Application number: CN2013103562010A
Authority: CN
Inventors: 徐佩笔; 刘君晖; 曹国保; 邓元江; 李勇山
Original assignee: PINGXIANG PXSTEEL ANYUAN STEEL & IRON Co Ltd
Current assignee: PINGXIANG PXSTEEL ANYUAN STEEL & IRON Co Ltd
Priority date: 2013-08-14
Filing date: 2013-08-14
Publication date: 2013-12-18

Abstract

The invention discloses a process for rolling hot-rolled steel bars for an anchor rod by adopting a double-slitting technology, and particularly relates to the technical field of press working of steel. The process comprises the following steps of heating a square billet with a sectional side length of 150 to 170mm to more than 950 DEG C; performing reducing rolling by using a rough rolling mill and an intermediate rolling mill; pre-slitting the rolled piece into a dog bone shape by using a fourth rolling mill; slitting the rolled piece into two rolled pieces which are the same by using a third rolling mill; rolling the two rolled pieces which independently enter a second rolling mill and a first rolling mill into two steel bars, which are the same, for the anchor rod; regulating a phase regulator arranged on the first rolling mill to ensure that two opposite ribs of the steel bars are on the same helix, so that a connecting nut can be sleeved on any section of anchor rod steel. According to the process, on the premise of ensuring that the requirement of a user on the size of the anchor rod steel is met, the output per machine-hour of the hot-rolled steel bar for the anchor rod can be greatly improved, and the energy consumption in the production of the hot-rolled steel bar for the anchor rod can be reduced.

Description

A kind of technique of two segmentation technique rolling anchor bars with hot-rolled reinforced bar that adopts

Technical field:

The present invention relates to steel pressure processing technology field, be specifically related to a kind of two slit rolling process that are applicable to the anchor pole reinforcing bar.

Background technology:

Slit rolling process is generally used for the production of armored concrete by Ribbed Bar, and this technique can increase substantially reinforcing bar output, reduces the reinforcing bar energy consumption, so slit rolling process is widely used in the production by Ribbed Bar at armored concrete.There is obviously difference with appearance and size and the armored concrete of hot-rolled reinforced bar in anchor pole by Ribbed Bar, for the dextrorotation anchor bar steel, need to all can directly overlap top nut at arbitrary cross section, so anchor pole will be far above the armored concrete Ribbed Bar to the requirement of appearance and size with hot-rolled reinforced bar.In order to meet the high request of anchor bar steel size, current domestic anchor bar steel manufacturing enterprise all adopts one-strand roller explained hereafter anchor pole hot-rolled reinforced bar.The technique that the one-strand roller technology is produced the anchor pole reinforcing bar makes the output of anchor pole reinforcing bar limited, and production cost is high.

Summary of the invention:

The purpose of this invention is to provide a kind of technique of two segmentation technique rolling anchor bars with hot-rolled reinforced bar that adopts, it guarantees under the prerequisite of anchor bar steel size conforms customer requirements, output, reduction anchor pole hot-rolled reinforced bar energy consumption in the time of can increasing substantially anchor pole with the hot-rolled reinforced bar machine.

In order to solve the existing problem of background technology, the present invention adopts following operating procedure: the first step: the square billet that is 150-170mm by the section length of side is heated to more than 950 ℃; Second step: by thick, middle milling train reducing and rolling; The 3rd step: by milling train four, be cut in advance dog bone shape; The 4th step: rolled piece is cut into to two identical rolled pieces by milling train three; The 5th step: two rolled pieces are entered separately to milling train two and milling train one is rolled into two identical anchor pole reinforcing bars; The 6th step: the phase regulator that is arranged on milling train one by adjustment makes the relative rib of reinforcing bar two on same helix, makes anchor bar steel put the attaching nut at arbitrary section.

The present invention has following beneficial effect: it guarantees under the prerequisite of anchor bar steel size conforms customer requirements, output, reduction anchor pole hot-rolled reinforced bar energy consumption in the time of can increasing substantially anchor pole with the hot-rolled reinforced bar machine.

The specific embodiment:

This specific embodiment is by the following technical solutions: its operating procedure: the first step: the square billet that is 150-170mm by the section length of side is heated to more than 950 ℃; Second step: by thick, middle milling train reducing and rolling; The 3rd step: by milling train four, be cut in advance dog bone shape; The 4th step: rolled piece is cut into to two identical rolled pieces by milling train three; The 5th step: two rolled pieces are entered separately to milling train two and milling train one is rolled into two identical anchor pole reinforcing bars; The 6th step: the phase regulator that is arranged on milling train one by adjustment makes the relative rib of reinforcing bar two on same helix, makes anchor bar steel put the attaching nut at arbitrary section.

This technique is applicable to the production of Ф 16mm, Ф 18mm, Ф 20mm, Ф 22mm anchor pole use hot-rolled reinforced bar.

This specific embodiment has following beneficial effect: it guarantees under the prerequisite of anchor bar steel size conforms customer requirements, output, reduction anchor pole hot-rolled reinforced bar energy consumption in the time of can increasing substantially anchor pole with the hot-rolled reinforced bar machine.

Claims

1. one kind adopts the technique of two segmentation technique rolling anchor bars with hot-rolled reinforced bar, and it is characterized in that its operating procedure: the first step: the square billet that is 150-170mm by the section length of side is heated to more than 950 ℃; Second step: by thick, middle milling train reducing and rolling; The 3rd step: by milling train four, be cut in advance dog bone shape; The 4th step: rolled piece is cut into to two identical rolled pieces by milling train three; The 5th step: two rolled pieces are entered separately to milling train two and milling train one is rolled into two identical anchor pole reinforcing bars; The 6th step: the phase regulator that is arranged on milling train one by adjustment makes the relative rib of reinforcing bar two on same helix, makes anchor bar steel put the attaching nut at arbitrary section.