Optimal Design Method of Short-flow Extrusion Molding Process for Blast Furnace Tuyere Front Cap Body

Abstract

The invention proposes an optimization design method for the short-flow extrusion molding process of the front-end cap body of a blast furnace tuyere. The front-end cap body can be obtained by subjecting a red copper cylindrical blank to one-time hot back extrusion and one-time reaming, which specifically includes the following steps : (1) Design of the thermal back extrusion process of the front end cap of the blast furnace tuyere; (2) Reaming process design of the front end cap of the blast furnace tuyere; (3) Optimization of the hot back extrusion process and die design of the front end cap of the blast furnace tuyere; (4) Design of the split hole reaming die for the cap body at the front end of the blast furnace tuyere; (5) Heat the red copper hollow cylindrical blank to the thermoforming temperature, put it into the reverse extrusion die, and perform reverse extrusion to obtain a semi-finished product; (6) Utilize The designed split hole reaming die extrudes and reams its central hole. The process optimization design method is highly targeted, so that the front-end cap body for blast furnace tuyere with a height difference between the inner and outer taper has a simple forming process, a short process, a guaranteed quality of the finished product, and a long service life.

Description

technical field [0001] The invention belongs to the technical field of the molding process of the front end cap body of the blast furnace tuyere, and in particular relates to an optimal design method of the short-flow extrusion molding process of the front end cap body of the blast furnace tuyere. Background technique [0002] The front-end cap body for the blast furnace tuyere is a key component to ensure the normal production of the blast furnace (generally made of copper, the price is relatively expensive), and it is the only way to blast the blast in the blast furnace. The high-temperature hot air also bears the scour of the high-temperature iron flow and the wear of the furnace material, so it is often burned out, and once it is burned out, it needs to be replaced by a shutdown. This not only requires a large number of spare parts, but also greatly increases the process cost, and once the wind down time is too long, it will directly affect the normal operation and produ...

AI Technical Summary

Problems solved by technology

Although the casting process is simple, the finished product has many defects, the quality cannot be guaranteed, and the service life is short.

At present, there is no specific process design method for the extrusion process of the front end cap body of the blast furnace tuyere; there is no numerical simulation analysis using finite element software; it needs to be squeezed 2-3 times to obtain a semi-finished product, and the process is lengthy; and then The use of traditional hole reaming method makes the finished product size unguaranteed and the molding load is too large; it does not provide a reliable, short-flow molding process and general design method

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