Production method for combined forging and pressing oxygen lance nozzle and mould special for same

A production method and technology of oxygen lance nozzles, applied in forging/pressing/hammer devices, forging/pressing/hammering machinery, manufacturing tools, etc., can solve problems such as complex manufacturing process, difficulty in popularization and use, and potential safety hazards, and achieve Good processing performance, improved cooling effect, and improved water supply intensity

Active Publication Date: 2011-01-05
山东崇盛冶金氧枪有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this nozzle has a long service life and a good blowing effect, the manufacturing process is complicated, there are many welds, there are potential safety hazards, and the manufacturing cost is high, so it is difficult to popularize and use

Method used

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  • Production method for combined forging and pressing oxygen lance nozzle and mould special for same
  • Production method for combined forging and pressing oxygen lance nozzle and mould special for same
  • Production method for combined forging and pressing oxygen lance nozzle and mould special for same

Examples

Experimental program
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Effect test

Embodiment Construction

[0042] Examples such as Figure 2 to Figure 8 As shown, the production method of the combined forging oxygen lance nozzle includes the production method of the nozzle crown 1, the water retaining plate 2, the nozzle outer pipe 3, the nozzle middle pipe 4, the nozzle inner core 5 and the nozzle inner pipe 6, the nozzle crown 1 The production method comprises the following steps:

[0043] Material selection: select oxygen-free copper Tu1 with a purity of 99.97%;

[0044] Forging blank: the selected oxygen-free copper Tu1 is forged into a blank. The blank includes a base 12 and a disc 13 with an integrated structure. The base 12 is larger in diameter than the disc 13. After forging, the metallographic structure of the copper is a twin crystal α phase, resulting in high density;

[0045] Intermediate billet production: draw a line on the disk 13 and perform volume distribution, that is, determine the position of the column 14, first process the inner cavity 131 on the disk 13, a...

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PUM

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Abstract

The invention relates to a production method for a combined forging and pressing oxygen lance nozzle and a mould special for the same. The production method comprises methods for producing a nozzle crown, a watertight shutter, a nozzle external pipe, a nozzle middle pipe, a nozzle inner core and a nozzle internal pipe, wherein a method for producing the nozzle crown comprises the following steps of: selecting materials; forging and pressing blanks; producing semifinished blanks, forging and molding; and machining a cone-shaped oxygen blowing mouth on an upright post to obtain the nozzle crown. The mould special for the production method comprises an upper mould and a lower mould, wherein the upper mould comprises a male die fixing plate on which a male die is arranged; a plurality of post holes are formed on the male die and radially and uniformly arranged around the center of the male die; the central line of each post hole forms an included angle of 7 to 20 degrees with the central line of the male die; the mould special for the production method is used for forging and pressing so as to obtain mould blanks. The nozzle crown forged and molded by the mould has a small number of welded joints, uniform and compact wall thickness, refined crystalline grains and the high polished degree of a mould cavity; and the production method improves the water supply strength of the oxygen lance nozzle and ensures cooling effect, so that the service life of the oxygen lance nozzle is effectively prolonged.

Description

technical field [0001] The invention relates to equipment for smelting steel, in particular to a production method and a special mold for a combined forging oxygen lance nozzle for oxygen blowing steelmaking, belonging to the technical field of smelting. Background technique [0002] Commonly used oxygen lance nozzles such as figure 1 As shown, it includes the main body of the nozzle, the water baffle 2, the outer pipe 3 of the nozzle, the middle pipe 4 of the nozzle and the inner pipe 6 of the nozzle. The main body of the nozzle includes the crown 1 of the nozzle and the inner core 5 of the nozzle. 9. The oxygen blowing pipe 9 has an oxygen blowing port 8, and the center line of the oxygen blowing port 8 has an angle α with the center line of the oxygen lance nozzle. Oxygen tray 11 and the oxygen outlet pipe 10 of the bottom, oxygen outlet pipe 10 has oxygen outlet 7, and oxygen outlet 7 is corresponding with oxygen blowing outlet 8 positions, is provided with water guide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/46B21J5/00B21J13/02
Inventor 刘延春
Owner 山东崇盛冶金氧枪有限公司
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