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A rolling finishing method and processing device for hot-rolled steel

A rebar and trial processing technology, applied in the field of rebar hot rolling manufacturing rolling and finishing devices, can solve the problems of large occupied space, long equipment line, reduced production efficiency, etc., to prevent high temperature damage, shorten the overall length, The effect of improving processing efficiency

Active Publication Date: 2022-03-04
JIANGSU BINXIN STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Rebar is generally manufactured by hot rolling during production, firstly through heating, then through rough rolling, intermediate rolling, finishing rolling, cooling, and cutting to complete the processing; in the process of processing, rough rolling, intermediate rolling, finishing The rolling process needs to be carried out at different temperatures. Generally, the distance between the rough rolling process, the intermediate rolling process and the finishing rolling process is increased to leave a sufficient cooling transmission area; however, this results in the overall production process. Longer, takes up a lot of space, and reduces production efficiency

Method used

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  • A rolling finishing method and processing device for hot-rolled steel
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  • A rolling finishing method and processing device for hot-rolled steel

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Embodiment 1

[0048] Such as figure 1 As shown, a method for hot-rolled manufacturing and rolling finishing of threaded steel according to an embodiment of the present invention includes the following steps:

[0049] S1, heat treatment: put the round steel bar into the walking heating furnace for heating;

[0050] S2. Low-speed trial processing: send the round steel bar heated in S1 into the shell 5 at a low speed and undergo rough rolling, intermediate rolling, primary finishing rolling and secondary finishing rolling in sequence. The temperature of the round steel bar itself is dissipated to the shell 5. , so that the temperature inside the housing 5 increases;

[0051] S3, start the cooling mechanism: After completing the step S2, start the first blower 503 and the second blower 505, adjust the ratio of the mixed gas through the first proportional valve 514 and the second proportional valve 516, and mix the gas with different temperatures, and then Jet out from the oblique air holes 52...

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Abstract

The invention discloses a threaded steel hot-rolled manufacturing and rolling finishing method, which comprises the following steps: feeding round steel bars into a walking heating furnace for heating; feeding the heated round steel bars into the shell at low speed and sequentially After rough rolling, intermediate rolling, primary finishing rolling and secondary finishing rolling; start the first blower and the second blower, adjust the ratio of the mixed gas through the first proportional valve and the second proportional valve, and mix it into gases of different temperatures , and then spray out from the oblique air hole; start to increase the processing speed, the round steel bar successively undergoes one cooling, rough rolling, two cooling, intermediate rolling, three cooling, one finishing rolling, four cooling and two finishing rolling, and finishes finishing. Processing; the present invention reduces the temperature once by blowing air at the front of the rough rolling, intermediate rolling and finishing rolling, shortens the overall length of the process line, improves the processing efficiency, and does not cause sudden cooling of the temperature , will not affect the processing quality of rebar.

Description

technical field [0001] The invention relates to the technical field of rebar processing, in particular to a method for hot-rolled manufacturing and rolling finishing of rebar, and in particular to a device for hot-rolling manufacturing and rolling finishing of rebar. Background technique [0002] Rebar, also known as hot-rolled ribbed steel bar. The protruding lines on the surface of rebar are called transverse ribs. There are three common types: spiral, herringbone, and crescent. The crescent is commonly used on construction sites. [0003] There are usually two longitudinal ribs and transverse ribs evenly distributed along the length direction on the rebar, mainly to enhance the adhesion between steel and concrete. Bear external forces, so that the house becomes stronger and stronger; then the compressive strength and resistance to bending the building will be better, and it can also effectively resist disasters such as earthquakes. Ribbed steel bars are widely used in va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/18B21B45/02
CPCB21B1/18B21B45/0224
Inventor 刘刚张树江张玉成周文君万鹏
Owner JIANGSU BINXIN STEEL GRP
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