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Method for melting titanium scraps and pure titanium wastes of thin titanium plates by electron beam cold hearth melting furnace

An electron beam cooling bed furnace and electron beam cooling bed technology, which is applied in the field of melting titanium scraps and thin titanium plate pure titanium waste by electron beam cooling bed melting furnace cold bed smelting technology, can solve the problem of reducing the recycling quality and use ratio of titanium waste Limitations, low utilization rate of titanium waste, etc., to avoid violent fluctuations in chemical composition, improve quality, and remove high and low density inclusions

Inactive Publication Date: 2014-06-18
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, titanium is a metal element, which is widely used in various fields such as petroleum, chemical industry, metallurgy, electric power, shipbuilding, etc. due to its high strength and heat resistance. Due to the high price of titanium, waste recycling of titanium It is a necessary way for every titanium processing enterprise to control costs; the existing common smelting technology mainly uses vacuum arc furnace (VAR) to recycle and smelt titanium waste. This method not only needs to break the blocky titanium waste into chips After mixing with titanium sponge, it has to be pressed into electrode blocks and then welded. Vacuum arc furnace (VAR) smelting can only be carried out after welding. Not only the processing cost of raw materials is high, but also the proportion used when pressing into electrodes is also limited. It is also relatively complicated, and the utilization rate of titanium waste is low; because the high and low density inclusions in titanium waste are difficult to remove in VAR furnace smelting, the chemical composition fluctuates greatly, which greatly reduces the quality of titanium waste recycling

Method used

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  • Method for melting titanium scraps and pure titanium wastes of thin titanium plates by electron beam cold hearth melting furnace
  • Method for melting titanium scraps and pure titanium wastes of thin titanium plates by electron beam cold hearth melting furnace
  • Method for melting titanium scraps and pure titanium wastes of thin titanium plates by electron beam cold hearth melting furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Example 1: Common TA1 smelting

[0070] Raw materials: Grade 0 titanium sponge + 17% TA1 crushed titanium shavings

[0071] Equipment: EBCHR 6 / 200 / 3600 electron beam cooling hearth furnace.

[0072] The chemical composition of the slabs is defined as shown in Table 2.

[0073] Table 2

[0074]

[0075] Actual smelting process:

[0076] A. Raw material preparation: TA1 pure titanium and titanium chips are crushed with a pulverizer (the inner wall of the pulverizer is made of stainless steel to prevent rust pollution).

[0077] B. Ingredients: Select 2 barrels of grade 0 titanium sponge (250kg) and 1 barrel of TA1 crushed titanium scraps (100kg / barrel), and put them into the mixer for mixing in turn. Pour out after mixing for 5 minutes, and seal the barrel for later use. Continue to mix 66 barrels according to the above method.

[0078] C. Deflate the drum, and put 10 barrels of mixed materials into the drum through the feeding trolley and vacuumize. Afterwards...

Embodiment 2

[0095] Embodiment 2: ordinary TA2 smelting

[0096] Raw materials: 29% crushed recycled materials + grade 0 titanium sponge + titanium dioxide.

[0097] Equipment: EBCHR 6 / 200 / 3600 electron beam cooling hearth furnace.

[0098] The chemical composition of the slab is defined in Table 4.

[0099] Table 4

[0100]

[0101] Actual smelting process:

[0102] A. Raw material preparation: Use hydraulic shears to crush TA2 block materials with a thickness of ≤4.5mm.

[0103] B. Ingredients: Select 1 barrel of grade 0 titanium sponge (250kg) and 1 barrel of TA2 crushed material (100kg / barrel), and configure titanium dioxide material bags, and put them into the mixer for mixing in turn. Pour out after mixing for 5 minutes, and seal the barrel for later use. Continue to mix 76 barrels according to the above method.

[0104] C. Deflate the drum, and put 10 barrels of mixed materials into the drum through the feeding trolley and vacuumize. Afterwards, every time you feed, you ...

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Abstract

The invention discloses a method for melting titanium scraps and pure titanium wastes of thin titanium plates by an electron beam cold hearth melting furnace, and relates to methods for melting pure titanium by electron beam cold hearth melting furnaces. The method comprises the following steps: preparing raw materials; selecting and proportioning; mixing by a mixer; vacuumizing and melting the vacuumized raw materials by the electron beam cold hearth melting furnace to obtain slab ingot formed by recovering and melting the wastes. According to the method, the utilization rate of the block-shaped titanium wastes is effectively increased, the process is simplified, the cost is reduced, high-and-low-density impurities in the wastes are effectively removed, and the waste recovering and melting quality is improved.

Description

technical field [0001] The invention relates to a method for smelting pure titanium in an electron beam cooling bed smelting furnace, in particular to a method for smelting titanium shavings and thin titanium plate pure titanium waste using the electron beam cooling bed smelting furnace cold bed smelting technology. Background technique [0002] As we all know, titanium is a metal element, which is widely used in various fields such as petroleum, chemical industry, metallurgy, electric power, shipbuilding, etc. due to its high strength and heat resistance. Due to the high price of titanium, waste recycling of titanium It is a necessary way for every titanium processing enterprise to control costs; the existing common smelting technology mainly uses vacuum arc furnace (VAR) to recycle and smelt titanium waste. This method not only needs to break the blocky titanium waste into chips After mixing with titanium sponge, it has to be pressed into electrode blocks and then welded. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B34/12
CPCY02P10/20
Inventor 朱俊杰刘茵琪吴胜男穆晓辉赵向宇
Owner LUOYANG SUNRUI TI PRECISION CASTING
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