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Parallel flow type steel billet heating furnace

A billet heating and billet technology, applied in the field of parallel flow billet heating furnace, to achieve the effect of large billet processing, high furnace utilization rate and small floor space

Active Publication Date: 2012-10-03
SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Parallel flow type steel billet heating furnace
  • Parallel flow type steel billet heating furnace
  • Parallel flow type steel billet heating furnace

Examples

Experimental program
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Effect test

Embodiment 1

[0014] The parallel-flow steel billet heating furnace of the present invention is as figure 1 Shown, comprise furnace body 4, air supply system, fuel supply system and waste gas exhaust system. The furnace body is a U-shaped structure with double chambers, and the upper ends on both sides of the U-shaped structure are connected with the horizontal structural part 11 . The furnace body is provided with burners 3, and the burners are located on the top of the furnace chamber 5 on both sides, and the number of burners is 6 on each side. The furnace body is provided with a steel billet feed port 2, a steel billet discharge port 13 and a waste gas discharge port. The billet feed port 2 is located at the top of the horizontal structural parts on both sides, the billet discharge port 13 is located at the bottom of the U-shaped structure, and the exhaust gas discharge port is located at the horizontal structural part. Furnace chambers on both sides are provided with conveying device...

Embodiment 2

[0017] Another embodiment of the present invention is as figure 2 As shown, the heating furnace is provided with two billet preheaters 14 and a billet cooler 15 . The billet preheater is connected to the billet feed port 2, and the waste gas discharge ports on both sides are connected to the waste gas discharge system through the billet preheater and the waste gas three-way valve 10. The billet cooler is connected to the billet outlet 13, and the blower 8 is connected to the air inlets 17 of the burners on both sides through the billet cooler 15 and the air three-way valve 9. Other structures are the same as in Embodiment 1. Preheat the heated steel slab 6 to 150-200°C with the residual heat of exhaust gas, and then send it into the heating furnace for heating. The combustion-supporting air is preheated to 200-300° C. by the heat released by cooling the steel billet through the billet cooler 15 , and then goes to the burner 3 for combustion-supporting combustion. Make full...

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Abstract

The invention relates to a parallel flow type steel billet heating furnace, which comprises a furnace body, an air supply system, a fuel supply system and a waste gas exhaust system, wherein the furnace body is provided with steel billet feed ports, steel billet discharge ports and waste gas discharge ports; a burner is arranged in the furnace body; the furnace body has a double-hearth U-shaped structure; the upper end of the U-shaped structure is connected with horizontal structure parts; the steel billet feed ports are positioned at the top ends of the horizontal structure parts on the two sides respectively; the steel billet discharge ports are positioned at the bottom of the U-shaped structure; the burner is positioned on the upper parts of hearths on the two sides; the waste gas discharge ports are positioned on the horizontal structure parts; the hearths on the two sides are provided with conveying devices; the conveying devices are provided with steel billet frames; the steel billet frames move from top to bottom along with the conveying devices; a combustion heating and gas preheating process is alternately performed on the hearths on the two sides; and reversing operationof the hearths on the two sides is realized through actions of a fuel three-way valve, an air three-way valve and a waste gas three-way valve. Through the double-hearth structure, a parallel flow type heating mode of a steel billet is realized; and the parallel flow type steel billet heating furnace has the advantages of high heating efficiency, high hearth utilization rate, small floor area and high steel billet machining capacity.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and relates to equipment for heating billets, in particular to a co-current billet heating furnace. Background technique [0002] In the steel rolling production process, various steel billets and steel materials need to be heated to a given temperature and kept for a certain period of time. Billet heating is an important link in the steel rolling production line, and it is responsible for the task of providing qualified steel billets for the rolling process. Billet heating is carried out through the heat exchange process in the furnace, and the heat exchange process in the furnace is transferred to the heated billet in the form of conduction, radiation and convection heat transfer. Conduction is the direct contact heat transfer between objects with different temperatures, and the heat exchange occurs by the movement of free electrons or molecular movement. Radiation heat transfer is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/70
Inventor 贾会平
Owner SHIJIAZHUANG XINHUA IND FURNACE CO LTD