Die special for producing combined forged and pressed oxygen lance nozzle

Abstract

The invention relates to a die special for producing a combined forged and pressed oxygen lance nozzle. The die comprises an upper die and a lower die, wherein the upper die comprises a male die fixing plate; a male die is arranged on the male die fixing plate and is provided with pillar holes which are uniformly formed along the center of the male die radially; an included angle of 7 to 20 degrees is formed between the center line of the pillar holes and the center line of the male die; inserts are arranged on the pillar holes close to the center of the male die; the contact surfaces of the inserts and the male die are parallel to the center line of the male die; an arc concave surface is formed at the middle position of the male die; the lower die comprises a female die fixing plate; a female die is fixedly arranged on the female die fixing plate and is provided with a cavity of which the shape corresponds to that of the end face of a crown of the nozzle; and an arc convex surface is formed at the middle position of the female die. An intermediate blank is forged and pressed into a formed blank by the special die, so that the water supply intensity of the oxygen lance nozzle is improved, and the service life of the oxygen lance nozzle is prolonged; and the contact surfaces of the inserts which are arranged on the pillar holes close to the center of the male die, and the maledie are parallel to the center line of the male die, so that the die and a forged and pressed piece are convenient to take and place.

Description

[0001] This application is a divisional application with the application number 201010248756X, the application date of August 10, 2010, and the title of the invention "the production method of the combined forging oxygen lance nozzle and the special mold". technical field [0002] The invention relates to equipment for smelting steel, in particular to a special mold for producing combined forging oxygen lance nozzles, which belongs to the technical field of smelting. Background technique [0003] 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 n...

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

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