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Blast-furnace tuyere small sleeve extrusion technology

A small set of tuyere, technology, applied in the direction of the tuyere, can solve the problems of short service life, bad working environment, etc., achieve the effect of increasing product yield, improving product quality, and solving the problems of cracks and water leakage

Active Publication Date: 2012-06-20
河北金栋机械有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the welding place is in the blast furnace, the temperature is high and the working environment is harsh, so the service life is less improved than that of casting

Method used

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  • Blast-furnace tuyere small sleeve extrusion technology
  • Blast-furnace tuyere small sleeve extrusion technology
  • Blast-furnace tuyere small sleeve extrusion technology

Examples

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Comparison scheme
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Embodiment Construction

[0015] Such as Image 6 As shown, the blast furnace tuyere small cover is made up of three parts of the front cap 1, the deflector 5 and the rear body 9. The front cap 1 adopts pure copper to be extruded multiple times to form a double U-shaped structure in the shaft section. The deflector 5 adopts steel plate welding and machining. The rear body 9 adopts pure copper casting and machining, with inlet and outlet holes above. Welded after assembling, divided into a water inlet chamber and a water outlet chamber by the deflector 5, which improves the density and cooling effect of the front cap 1, and increases the service life.

[0016] The present invention comprises the following steps: ①, the semi-continuous casting machine casts the pure copper bar that meets the product requirement diameter, such as φ260mm; ②, uses the sawing machine to saw the pure copper bar into a copper section that meets the required length, such as 180mm; ③, copper section Heating, thickening with a...

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Abstract

The invention relates to a blast-furnace tuyere small sleeve extrusion technology which comprises the following steps of: (1) casting a pure copper rod; (2) sawing the pure copper rod into copper segments conforming to the required length; (3) heating the copper segments and heading with a mould; (4) heating, heading with a mould and punching a center hole; (5) turning the inner wall of the center hole and chamfers at the two ends according to the requirements of a product drawing; (6) heating, extruding an annular groove with a mould and producing the semi-finished product of a front cap; (7) heating, and extruding the annular groove again with the mould; (8) assembling and fitting the matched fluid director and front cap, and enabling closed contact between a small clapboard of the fluid director and the bottom in the annular groove of the front cap; (9) extruding and reaming the center hole with a mould, and compacting the fluid director and the front cap at the same time; and (10) machining the welding grooves on the outer side of the annular groove opening of the front cap and the inner side of the conical big opening of the center hole; and assembling and welding the rear body and the front cap, and checking whether the product is qualified. The technology provided by the invention is simple, and the service life of the product is long.

Description

technical field [0001] The invention relates to an extrusion process of a small tuyere sleeve for a blast furnace. Background technique [0002] There are two processing techniques for blast furnace tuyeres: casting and forging. The casting process is simple, but due to many casting defects, the service life is short. The current forging process is to divide the front cap of the blast furnace tuyere cover into two parts to forge separately, and then weld them into shape. Because the welding place is in the blast furnace, the temperature is high and the working environment is harsh, so the service life is less improved than that of casting. Invention content: [0003] In order to overcome the disadvantages of the prior art, the invention provides a blast furnace tuyere small sleeve extrusion process, which has simple process and long service life of the finished product. [0004] The technical scheme adopted by the present invention to solve the technical problems is: co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21C23/02C21B7/16
Inventor 许漳林许金栋
Owner 河北金栋机械有限公司
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