Method for producing titanium slabs efficiently

Abstract

The invention discloses a method for producing titanium slabs efficiently. Electron beam cold hearth furnaces of six electron guns are used, raw materials of which components are selected are placed in bulk material feeders or bar material feeders of the electron beam cold hearth furnaces, smelting is conducted, then obtained cast ingots are cooled and are discharged out of the furnace, and finished products are obtained. According to the method, the raw materials in an original state are used directly for smelting, crushing of recycled materials, mixing of titanium sponge materials, electrode block pressing and electrode welding are avoided, slab ingots smelted through optimization design are two cast ingots of 200*1290*5000mm which are produced in one furnace, the weight is about 12 tons, and the slab ingots are not required to be smelted twice or to be forged can be used in rolling, so that the production flow and the production period are shortened, the production cost is reduced, and the efficiency is improved greatly.

Description

technical field [0001] The invention relates to a material processing technology, in particular to a method for efficiently producing titanium slabs. Background technique [0002] The existing technology is mainly the method of VAR melting round ingot + billet forging. Melting is carried out by a vacuum consumable arc furnace (VAR), which requires the recycled material to be broken into chips and mixed with sponge titanium, then pressed into electrode blocks, welded in a vacuum welding box, and then vacuum arc furnace (VAR ) first smelting, second smelting or even third smelting. The ingot after smelting is a round ingot, which is forged after machining. It needs to be forged several times to become a cuboid slab before it can be used for plates. Production. And the flatness of the forged slab is poor, the surface oxide layer is thick, and the yield is low. Therefore, the traditional method is not only limited in the shape of the raw material, but also has high processing...

AI Technical Summary

Problems solved by technology

And the flatness of the forged slab is poor, the surface oxide layer is thick, and the yield is low

Therefore, the traditional method is not only limited in the shape of the raw material, but also has high processing costs, complicated procedures, and a long process, and the utilization rate of the material is low after smelting-forging

[0003] Titanium is a refractory and hard-to-deform metal. Because of the activity of titanium, it is very easy to react with oxygen, nitrogen and other gases at high temperature, so that the metal titanium will be polluted and lose its original good process performance and mechanical properties.

Forging in the atmospheric state will form a thick oxide layer, and the dimensional accuracy of the forged slab is not easy to control, and the amount of machining before rolling is large, which does not meet the requirements of near-net shape

The manufacturing process of titanium slab is complex and the yield is low

The high manufacturing cost of sponge titanium is one of the reasons for the high price of titanium processing materials, and the expensive processing costs and low material utilization in the processing process are the main reasons for the high price of titanium processing materials

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