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

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...

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

Images