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A method for preparing ta2 pure titanium by smelting and recovering ta1 shavings pure titanium residue

A technology of titanium residue and pure titanium, which is applied in the field of titanium material processing, can solve the problems of shortening the smelting and recycling process of TA1 scrap pure titanium residue, long smelting and recycling process, and difficult quality control, so as to reduce the risk of uneven segregation , Milling processing parameters to avoid and reduce the effect of TiO2 addition

Active Publication Date: 2020-02-25
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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  • A method for preparing ta2 pure titanium by smelting and recovering ta1 shavings pure titanium residue
  • A method for preparing ta2 pure titanium by smelting and recovering ta1 shavings pure titanium residue
  • A method for preparing ta2 pure titanium by smelting and recovering ta1 shavings pure titanium residue

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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 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. The invention adopts dry milling of TA1 pure titanium rough slabs to obtain TA1 titanium scrap residues, and the TA1 scrap titanium residues are subjected to magnetic separation to remove iron, briquetting, and drying to obtain titanium scrap briquettes; titanium scrap briquettes pass through the composition The batching method is reasonable batching and smelting recovery to obtain TA2 pure titanium. The invention can greatly shorten the smelting and recovery process of shavings titanium residues, improve the quality of smelting and recycling, and can realize 100% TA1 smelting and recovery of shavings titanium residues without adding sponge titanium, and greatly increase the addition ratio of shavings titanium residues. This method has a good effect of removing high and low density inclusions, and the obtained TA2 pure titanium meets the standard requirements of GB / T 3620.1 "Titanium and Titanium Alloy Grades and Chemical Compositions", and the mechanical properties of the titanium plates produced by it are better than those of GB / T 3621 "Titanium and Titanium Alloys". Titanium alloy plate" standard requirements.

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 Patents(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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