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Manufacturing method of arc additive of titanium alloy structural part

A technology for additive manufacturing and structural parts, applied in the field of rapid prototyping, can solve problems such as difficulty in meeting the schedule requirements of rapid development of new products and mass production, difficulty in machining, affecting processing procedures, etc., and achieve reduction of technical procedures and good forming. The effect of high quality and processing efficiency

Active Publication Date: 2015-06-03
CAPITAL AEROSPACE MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, casting technology and mechanical processing methods are mainly used for titanium alloy structural parts. Although traditional methods can meet the requirements of product processing accuracy, there are difficulties in mechanical processing, numerous and complicated processes, low material utilization, high production costs, and long production cycles. shortcoming
At the same time, due to the existence of many macroscopic defects and component segregation in cast parts, it directly affects the subsequent processing procedures such as machining and welding.
The existing manufacturing process combination is difficult to meet the progress requirements of rapid development and mass production of new products

Method used

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  • Manufacturing method of arc additive of titanium alloy structural part
  • Manufacturing method of arc additive of titanium alloy structural part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 2 As shown, the height of the titanium alloy structural part is 200mm, the wall thickness is 20mm, and it is formed by surfacing welding of 200 layers of ring parts, and the height of each layer of ring parts is 1mm. It is manufactured using the arc additive method for titanium alloy structural parts described in the present invention. Specifically:

[0029] The arc additive manufacturing method is used to weld each layer of ring parts, that is, the wire feeding device feeds the welding wire, the welding torch melts the welding wire for welding, and the inner to outer ring welds are overlapped to form a layer of ring parts; then the welding torch increases a layer thickness , repeat the above welding method to form another layer of ring parts, and so on, and finally form a titanium alloy structural part by superimposing 200 layers of ring parts.

[0030] Adjacent annular welds are welded in opposite directions during welding, and the welding arc starti...

Embodiment 2

[0032] Such as figure 2 As shown, the height of the titanium alloy structural part is 200mm, the wall thickness is 20mm, and it is formed by surfacing welding of 200 layers of ring parts, and the height of each layer of ring parts is 1mm. It is manufactured by the arc additive method of titanium alloy structural parts according to the present invention, such as figure 1 As shown, the specific steps are:

[0033] (1) Select the arc starting point on the Q235 carbon steel substrate, and start the clockwise welding of the first ring on the first layer;

[0034] (2) After the first layer of the first ring welding is completed, the welding torch moves 1.4mm to the outside of the ring, and the counterclockwise welding of the first layer and the second ring is started, and the welds overlap by 0.6mm;

[0035] (3) After completing the second ring welding of the first layer, repeat step (2), and then complete another 13 ring welding, and the adjacent ring welding of the same layer a...

Embodiment 3

[0043] The height of the titanium alloy structural part is 100mm, and the wall thickness is 15mm. It is formed by surfacing welding of 50 layers of ring parts, and the height of each layer of ring parts is 2mm. It is manufactured by the arc additive method of titanium alloy structural parts according to the present invention, such as figure 1 As shown, the specific steps are:

[0044] (1) Select the arc starting point on the Q235 carbon steel substrate, and start the counterclockwise welding of the first ring on the first layer;

[0045] (2) After the first layer of the first ring welding is completed, the welding gun moves 1mm to the outside of the ring, and starts the clockwise welding of the first layer of the second ring, with 0.5mm of overlap between the welds;

[0046] (3) After completing the second ring welding of the first layer, repeat step (2), and then complete another 13 ring welding, and the adjacent ring welding of the same layer adopts the opposite direction; ...

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Abstract

The invention provides a manufacturing method of an arc additive of a titanium alloy structural part. An arc wire feed additive manufacturing method is used to carry out welding of each layer of ring members, i.e., a wire feeder feeds welding wires, the welding wires are melted by a welding gun to weld, and ring welding beads from the inside to the outside are sequentially lapped to form a layer of ring members; and then one thickness of layer of the welding gun is increased, and the welding method is repeated to form another layer of ring members, and so forth; and finally, a plurality of layers of ring members are overlapped to form a titanium alloy structural part. The welding forming part provided by the invention has a fine and uniform grain size and good mechanical properties, and can meet or exceed the level of congruent castings, and the product has a short development cycle and high processing efficiency.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to an arc additive manufacturing method for titanium alloy structural parts. Background technique [0002] At present, casting technology and mechanical processing methods are mainly used for titanium alloy structural parts. Although traditional methods can meet the requirements of product processing accuracy, there are difficulties in mechanical processing, numerous and complicated processes, low material utilization, high production costs, and long production cycles. shortcoming. At the same time, due to the existence of many macroscopic defects and composition segregation in cast parts, it directly affects subsequent processing procedures such as machining and welding. The existing manufacturing process combination is difficult to meet the progress requirements of rapid development and mass production of new products. [0003] Wire+Arc Additive Manufacture...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04
Inventor 王国庆王福德陈济轮曾晓雁何京文董鹏梁晓康
Owner CAPITAL AEROSPACE MACHINERY
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