Manufacturing machine and method of titanium alloy parts

Abstract

The invention provides a manufacturing machine and method of titanium alloy parts. The manufacturing machine is characterized by comprising a machine body; a movable platform is arranged on the lower portion of the machine body; a preformed billet is arranged on the movable platform; a thermomechanical processing head is arranged above the preformed billet; a titanium alloy bar hopper is arranged on one side of the thermomechanical processing head; a movable guide rail is connected with the upper portion of the titanium alloy bar hopper and the upper portion of the thermomechanical processing head; and a driver used for driving the titanium alloy bar hopper and the thermomechanical processing head is arranged on the movable guide rail. The manufacturing method of the titanium alloy parts comprises the steps that titanium alloy bars are put into the titanium alloy bar hopper, the preformed billet is installed on the movable platform, direct-current voltage is applied to the other ends, not in contact with one another, of the titanium alloy bars, thermomechanical processing is conducted on metal molten drops spread on the preformed billet through the thermomechanical processing head, the titanium alloy bars are melted and form the molten drops, then thermomechanical processing is conducted immediately for forming after the molten drops drop on the preformed billet, and the titanium alloy parts can be formed in line-by-line and layer-by-layer modes. By the adoption of the technical scheme, the performance of the manufactured parts is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of metal forming, in particular to a preparation machine and a preparation method of titanium alloy parts. Background technique [0002] At present, the commonly used metal additive manufacturing methods mainly use heat sources such as lasers and electron beams, and use powder, wire, etc. as raw materials to form metal parts such as titanium alloys by wire feeding, powder feeding or powder spreading methods, such as selective laser melting. (SLM), Electron Beam Selective Melting (SES), Electron Beam Sintering (EBF), etc., in order to achieve the melting of titanium alloys, in addition to using lasers, electron beams and other methods to melt metals, vacuum arc self-consumption melting can also be used , electroslag remelting, electron beam melting, plasma melting, vacuum induction melting and other methods, so these methods can also be used for the additive manufacturing of metals. [0003] Friction Stir we...

AI Technical Summary

Problems solved by technology

[0004] At present, the existing metal key structural parts are often manufactured by casting and forging methods. For the manufacture of large-scale parts, large-scale forging equipment is often required. At the same time, the utilization rate of materials is low, the manufacturing cycle is long, and the cost is high. Forming, but it also sacrifices the strength and plasticity of some materials, and is not suitable for the manufacture of key structural parts. Different from casting and forging, electron beam and laser forming methods are incremental forming methods, but the existing electron beam, There are some deficiencies in the laser forming method: on the one hand, laser and electron beam rapid prototyping technology is a new forming technology developed in recent years, but its structure is mainly a single cast structure formed by metal melting and deposition, which cannot be formed according to different It is required to obtain different organizational states to meet various requirements for performance, and it cannot be used to manufacture key components such as aircraft frames, landing gear, and engine rotors; on the other hand, the cost of electron beam systems and laser systems is high, and laser forming The cost of domestic equipment needs to be more than 2 million yuan, imported equipment needs 7-8 million yuan, and the equipment is very large; at the same time, the efficiency still needs to be improved. At present, the maximum efficiency of electron beam forming is: 3-5kg / h, while laser rapid prototyping The efficiency is: 0.3-0.5kg / h

In addition, when the existing methods are used to manufacture titanium alloy or titanium aluminum alloy parts, if the powder method is used, the performance of the titanium alloy or titanium aluminum alloy structural parts produced is insufficient, and the fuse method is difficult to obtain Filament of high temperature titanium alloy or titanium aluminum alloy

Images