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Manufacturing technology method of titanium and titanium alloy bar wires used for manufacturing additional materials

A technology of additive manufacturing and preparation technology, applied in the field of material processing, can solve problems such as long process flow, high processing cost, and increased impurity element increment, so as to reduce electrode pressing and assembly welding, improve comprehensive performance, and improve quality level Effect

Pending Publication Date: 2020-01-31
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the process flow for the preparation of titanium and titanium alloy rods and wires for additive manufacturing is the route of VAR melting-forging-rolling. The preparation process includes material mixing, electrode pressing and assembly welding, 2~3 times of VAR melting, forging, and peeling. From grinding to bar rolling, not only the process flow is long, the material loss is large, and the processing cost is high, but also the increase of impurity elements such as O and N increases due to multiple VAR smelting, which affects the comprehensive mechanical properties of parts for additive manufacturing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1. Weigh the sponge titanium, AlV55 master alloy, Al bean, and ferro-titanium alloy according to the weight percentage of Al 7.5%, V 4.0%, and the rest is sponge titanium. The O content of the sponge titanium is 0.051%, and the N content is 0.006% %, do not add Fe element alloy and titanium dioxide to increase oxygen, weigh the raw materials and mix them through the mixing system for 5 minutes, a single mixing of 100Kg, a total of 4 times of mixing, the raw materials after mixing are evenly distributed to the TC4 alloy plate In a coverless material box with a welding size of 400×450×1500mm, the bars for EB smelting are used for standby;

[0021] Step 2: Dry the bar material for EB smelting and put it into the material box, put the material box into the feeding room, and vacuum the smelting room and the feeding room, and the vacuum degree should be less than or equal to 0.07Pa and 0.3Pa respectively , turn on the electron gun to preheat the solidification shell, car...

Embodiment 2

[0026] Step 1. Weigh the titanium sponge. The O content of the titanium sponge is 0.042%, and the N content is 0.005%. After weighing the above-mentioned raw materials, they are mixed by the mixing system for 3 minutes, and then clothed to a size of 420×450×1500mm welded with TA1 plates. In the coverless material box, it is used as bar material for EB melting;

[0027] Step 2: Dry the bar material for EB smelting and put it into the material box, put the material box into the feeding room, vacuum the melting room and the feeding room, and turn on the electron gun after the vacuum degree is less than or equal to 0.07Pa and 0.3Pa respectively. Preheating, enter the normal smelting step for continuous feeding smelting, smelting to obtain an EB ingot blank with a size of 200×1290×6100mm;

[0028] Step 3: Carry out face milling on the upper and lower surfaces and both sides of the EB ingot blank, the milling removal amount is 3mm, and use the grinding wheel and the impeller to repa...

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Abstract

The invention provides a manufacturing technology method of titanium and titanium alloy bar wires used for manufacturing additional materials. The method comprises the following specific steps that needed raw materials are smelted, sponge titanium and an intermediate alloy are weighed, the raw materials are added into a mixing machine to be mixed uniformly, and obtained bars for EB smelting are subjected to ingot casting to obtain EB cast ingot blanks; the surfaces of the obtained EB cast ingot blanks are machined mechanically, the removing thickness of the milled surfaces is 2-5 mm, and surface defects are subjected to coping and polishing treatment; and bars and wires are obtained by means of one fire time and multiple fire times and metal pressure machining treatment, and among the different fire times, a straightening machine carries out online straightening, and a centerless lathe carries out scaling and polishing. The manufacturing technology is simple and low in cost, the obtained bar wires contain low content of impurity elements such as O and N, the component is more pure, and the comprehensive performance of additional material manufacturing parts is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a process method for preparing titanium and titanium alloy rods and wires for additive manufacturing. Background technique [0002] 3D printing additive manufacturing is an advanced, efficient, and near-net-shape component production method with high material utilization. It can produce thin-walled, complex cavities and lattice structures that cannot be prepared by traditional processes, meeting individual needs and developing prospects broad. Titanium alloy is the most commonly used metal material in 3D printing. It has the characteristics of low density, high specific strength, excellent corrosion resistance, and good biocompatibility. It has broad application prospects in daily necessities and other fields. However, due to titanium's high activity, high strength, and difficulty in deformation, traditional manufacturing and processing of titanium alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C14/00B21C37/04B33Y70/00
CPCB21C37/047B33Y70/00C22C1/03C22C14/00
Inventor 李渤渤裴腾刘茵琪王树军蒋林凡张强
Owner LUOYANG SUNRUI TI PRECISION CASTING
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