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Method for smelting, recycling and preparing TA2 pure titanium by adopting TA1 scrap-like pure titanium residual material

A titanium residual material and pure titanium technology, applied in the field of titanium material processing, can solve the problems of shortening the smelting and recycling process of TA1 chip-like pure titanium residual material, long smelting and recycling process, and difficult quality control, so as to reduce the risk of uneven segregation , The effect of avoiding milling parameters and reducing the amount of TiO2 added

Active Publication Date: 2018-04-10
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies and shortcomings of the prior art, such as long smelting and recycling process of TA1 chip-shaped pure titanium residue, low production efficiency, high recycling cost, and difficult quality control, the purpose of the present invention is to provide a method of using TA1 chip-shaped pure titanium residue A method for preparing TA2 pure titanium by smelting and recycling, which can greatly shorten the smelting and recycling process of TA1 shavings of pure titanium residue, improve the quality of smelting and recycling, and does not need to add sponge titanium, and can achieve 100% smelting and recycling of TA1 shavings of pure titanium residue , greatly increase the addition ratio of TA1 flake-like pure titanium residue, with the advantages of high efficiency, short process, low cost, high quality, etc.

Method used

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  • Method for smelting, recycling and preparing TA2 pure titanium by adopting TA1 scrap-like pure titanium residual material
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  • Method for smelting, recycling and preparing TA2 pure titanium by adopting TA1 scrap-like pure titanium residual material

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Experimental program
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Embodiment 1

[0039] A method for preparing TA2 pure titanium by smelting and recovering TA1 shavings of pure titanium residue, comprising the steps of:

[0040] (1) Titanium shavings preparation: the TA1 pure titanium rough slab with a dry, clean surface, no oil stains, water stains, sundries and other foreign matter attached to it is dry-milled with a milling machine, and the surface is machined to obtain a TA1 pure titanium finished slab and Chip-shaped titanium residues, in which the milling cutter head is cooled by blowing compressed air, the cutting amount of the milling cutter head at one time is ≤4mm, and the feeding speed of the milling machine table is ≤120mm / min; the appearance of the obtained titanium chips is silvery white or light yellow , to avoid blue and purple peroxidized unqualified titanium chips; before rough slab processing, the milling machine workbench and titanium chip collection conveyor belt should be inspected and cleaned to avoid oil stains and foreign matter adh...

Embodiment 2

[0047] (1) The TA1 pure titanium rough slab whose surface is dry, clean, and free from oil stains, water stains, sundries and other foreign matter is dry-milled with a milling machine, and the milling cutter head is cooled by blowing compressed air without using coolant. To avoid contamination of titanium shavings, the feed rate of the milling cutter head is 4mm at a time, and the feed rate of the milling machine table is 100mm / min. The surface is machined to obtain TA1 pure titanium finished slabs and clean, silvery white and light yellow shavings of titanium residues. Material; wherein, TA1 pure titanium rough slab Fe, C, N, O impurity element content (mass percentage) is respectively 0.025%, 0.02%, 0.005%, 0.045%, impurity element overall content [O] 当 =[O]%+0.5×[Fe]%+0.7×[C]%+2.5×[N]%=0.045%+0.5×0.025%+0.7×0.02%+2.5×0.005%=0.084%; Before billet processing, check and clean the milling machine table and titanium chip collection conveyor belt to avoid oil stains and foreign m...

Embodiment 3

[0060] (1) The TA1 pure titanium rough slab whose surface is dry, clean, and free from oil stains, water stains, sundries and other foreign matter is dry-milled with a milling machine, and the milling cutter head is cooled by blowing compressed air without using coolant. To avoid contamination of titanium shavings, the feed rate of the milling cutter head is 2 mm at a time, and the feed speed of the milling machine table is 80 mm / min. The surface is machined to obtain TA1 pure titanium finished slabs and clean, silvery white and light yellow shavings of titanium residues. Material; wherein, TA1 pure titanium rough slab Fe, C, N, O impurity element content (mass percentage) is respectively 0.045%, 0.035%, 0.007%, 0.075%, impurity element overall content [O] 当 =[O]%+0.5×[Fe]%+0.7×[C]%+2.5×[N]%=0.075%+0.5×0.045%+0.7×0.035%+2.5×0.007%=0.1395; rough slab Before processing, check and clean the worktable of the milling machine and the titanium chip collection conveyor belt to avoid o...

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Abstract

The invention belongs to the technical field of processing of titanium materials and particularly relates to a method for smelting, recycling and preparing TA2 pure titanium by adopting a TA1 scrap-like pure titanium residual material. According to the method, a dry-type milled TA1 pure titanium plate blank is adopted to obtain the TA1 scrap-like titanium residual material, and the TA1 scrap-liketitanium residual material is subjected to magnetic separation deironing, caking and drying to obtain titanium scrap press cakes; and the titanium scrap press cakes are reasonably dosed by an ingredient dosing method and are smelt and recycled to obtain the TA2 pure titanium. The smelting and recycling flow for the scrap-like titanium residual material can be greatly reduced, the smelting and recycling quality is improved, no sponge titanium is needed to be added, the smelting and recycling of the TA1 scrap-like titanium residual material can be realized one hundred percent, and the additive proportion of the scrap-like titanium residual material is greatly improved. The method has good effect of removing high and low density inclusions, the obtained TA2 pure titanium meets the standard requirements of GB / T 3620.1 Titanium and Titanium Alloy Brand Number and Chemical Components, and the mechanical property of a produced titanium plate is superior to the standard requirements of GB / T 3621 Titanium and Titanium Alloy Plate.

Description

technical field [0001] The invention belongs to the technical field of titanium material processing, and in particular relates to a method for preparing TA2 pure titanium by smelting and recovering TA1 chip-like pure titanium residue. Background technique [0002] Industrial pure titanium is mainly TA1 and TA2 grades, which are widely used in chemical industry, petroleum, electric power, metallurgy, environmental protection and other fields. Among them, TA1 brand pure titanium has low content of impurity elements such as O, N, C, Fe, etc., has the characteristics of low strength and high plasticity, and the raw materials required for smelting have high purity; TA2 brand pure titanium needs to contain a certain proportion of O, N, C, Fe And other strengthening impurity elements, with medium strength and excellent performance of plastic matching, relatively low requirements on the purity of smelting raw materials. [0003] During the preparation of TA1 pure titanium slabs, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12
CPCC22B34/1209Y02P10/20
Inventor 李渤渤裴腾王非刘如斌朱俊杰刘茵琪
Owner LUOYANG SUNRUI TI PRECISION CASTING
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