Hot rolling forming process of door frame steel for civil air defense

A hot-rolled forming, door frame steel technology, applied in metal rolling and other directions, can solve the problems of high processing cost, low production efficiency, large door frame steel for civil air defense, etc., and achieve the effect of reducing stress defects, uniform thickness and accurate angle

Active Publication Date: 2019-04-19
SUQIAN NANGANG JINXIN STEEL ROLLING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The market demand for door frame steel for civil air defense is relatively large. At present, the production of door frame steel for civil air defense in the market is mainly welded by equilateral angle steel and two pieces of flat steel (such as figure 1 , angle steel 3, flat steel oblique bars 1, and vertical bars 2 are welded), and there are defects such as poor welding quality, low production efficiency, environmental pollution during welding, and high processing costs

Method used

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  • Hot rolling forming process of door frame steel for civil air defense
  • Hot rolling forming process of door frame steel for civil air defense
  • Hot rolling forming process of door frame steel for civil air defense

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Embodiment Construction

[0029] The entire production process of door frame steel for civil air defense includes hot rolling forming process and post-processing process.

[0030] Major equipment:

[0031] 1. Equipment required for hot rolling forming process:

[0032] 1) One end-in and end-out push steel heating furnace with an effective heating area of ​​210m2 2 , the heating capacity is 80 tons / hour, and the fuel is natural gas.

[0033] 2) Φ850 two-roll reversible rolling mill: motor model TDZBS4500-12, U=3100v, power 4500Kw, speed 0-56 / 112rpm, roll diameter 850-1000mm;

[0034] 3) Φ750 three-roller shingle rolling mill: motor model: YZ132M-4P=7.5kW, speed n=1445r / min, power 2500kW main motor, roll diameter 800~920mm;

[0035] 4) The 650×2 rolling mill is composed of Φ650I three-roller and Φ650II two-roller: motor model YR3200-12, power 3200kW, speed 497rpm, roll body size 720-850mm;

[0036] 5) Φ650III two-roll finishing mill: motor model YR2500-16 / 2150, power 2500kW, speed 372r / min, roll size...

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Abstract

The invention provides a hot rolling forming process of door frame steel for civil air defense, and belongs to the technical field of steel machining. A continuous casting blank serves as a raw material, in the cogging rough rolling stage, through two times of steel turnover and three-pass rolling, a vertical rib prototype is formed on the surface of the raw material, through two-pass rolling, aninclined rib prototype is formed, through eight-pass rolling, auxiliary supporting legs and supporting legs are formed, and finally, through one-pass finish rolling, hot rolling forming machining is finished. The door frame steel for civil air defense is formed at a time, high in production efficiency, free of appearance defect, precise in angle and uniform in thickness.

Description

technical field [0001] The invention belongs to the technical field of steel processing, and in particular relates to a hot rolling forming process of door frame steel for civil air defense. Background technique [0002] The market demand for door frame steel for civil air defense is relatively large. At present, the production of door frame steel for civil air defense in the market is mainly welded by equilateral angle steel and two pieces of flat steel (such as figure 1 , Angle steel 3 and flat steel oblique bar 1, vertical bar 2 are welded), there are defects such as poor welding quality, low production efficiency, environmental pollution produced in welding, and high processing cost. Contents of the invention [0003] The object of the present invention is to provide a hot-rolled forming process of door frame steel for civil air defense, which can be formed once and has high production efficiency. The door frame steel for civil air defense produced has no appearance de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/08
CPCB21B1/08B21B2201/06
Inventor 丁光辉刘健刘俊军沈晓辉马进喜
Owner SUQIAN NANGANG JINXIN STEEL ROLLING CO LTD
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