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High-temperature alloy rib structure laser solid forming method

A technology of high-temperature alloys and ribs, which is applied in the coating process and coating of metal materials, can solve the problems of increased cost, high cost, and long cycle, and achieve the effect of improving the overall strength and rigidity

Active Publication Date: 2014-01-08
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Secondly, in the process of developing new models, titanium alloy structural parts need to be designed, processed and trial-manufactured, such as forging and casting. The design and manufacture of molds not only has a long cycle but also high costs, resulting in a longer development cycle and increased costs for the entire part. In addition, when the design department needs to modify the designed model, the design and manufacture of the later molds need to be remanufactured

Method used

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  • High-temperature alloy rib structure laser solid forming method
  • High-temperature alloy rib structure laser solid forming method
  • High-temperature alloy rib structure laser solid forming method

Examples

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Embodiment 1

[0041] This embodiment manufactures a titanium alloy process sample A with a width of 60mm, a height of 100mm, a thickness of 10mm, and a 15mm boss on the top, such as Figure 3a As shown, A1 in the figure is the boss. The specific manufacturing steps are as follows:

[0042] 1. Select a TC4 titanium alloy plate with a thickness of about 60mm×10mm×10mm as the substrate, simulate the semi-finished parts, and fix them on the machine tool with fixtures;

[0043] 2. Turn on the laser, set the laser power parameter to 700W, high-purity CO 2 , high-purity He, high-purity N 2 The pressure is adjusted to about 0.5MPa, and the cooling water flow is about 20L / min;

[0044] 3. Put the titanium alloy powder into the powder feeder;

[0045] 4. Use UG software to establish a three-dimensional model of titanium alloy process sample 1 and process support 1B. The shape of process support A2 is as follows Figure 3b As shown, the slope α is 10°, and the 3D model is subdivided using the sub...

Embodiment 2

[0051] This embodiment manufactures the titanium alloy cabin section test piece B with ring rib structure, Figure 4a is the longitudinal sectional view of the side wall of the cabin with ring ribs, where B1 is the position of the ring ribs. Its specific manufacturing steps are as follows:

[0052] 1. Fix the semi-finished titanium alloy cabin section on the machine tool with fixtures;

[0053] 2. Turn on the laser, set the laser power parameter to 1000W, high-purity CO 2 , high-purity He, high-purity N 2 The pressure is adjusted to about 0.5MPa, and the cooling water flow is about 20L / min;

[0054] 3. Put the titanium alloy powder into the powder feeder;

[0055] 4. Use UG software to establish a three-dimensional model of the technical support of the ring reinforcement, and merge it with the titanium alloy cabin model. The shape of the technical support B2 is as follows Figure 4b As shown, the slope α is 15°. The 3D model is subdivided using the subdivision software th...

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Abstract

The invention relates to a high-temperature alloy rib structure laser solid forming method. According to the method, a rib structure three-dimensional model is constructed, three-dimensional process support is designed according to the place of the rib structure; the model is split, and a cladding control program is programmed. When forming is carried out, cladding forming of the process support part is first carried out on a part on which the rib structure is required to be formed; forming process parameters are adjusted; uniform and stable forming of the rib structure part is carried out; and the process support is removed, such that an integral high-temperature alloy rib structure is obtained. With the method provided by the invention, high-temperature alloy structural parts with rib structures such as lugs and bosses can be integrally manufactured. The invention establishes a basis for realizing engineering in the field of rapid manufacturing.

Description

technical field [0001] The invention belongs to the technical field of special metal forming and processing, and relates to a laser three-dimensional forming method for a rib structure of a high-temperature alloy, especially a titanium alloy. Background technique [0002] There are many titanium alloy parts on aerospace vehicles, especially revolving parts such as cabin sections, and the inner or outer walls of such parts generally have ribs or lugs and boss structures. Manufacturing, generally using welding process. Using this process not only requires the design of specific fixtures, but also considers the deformation, shape correction and heat treatment of the parts after welding, which will greatly increase the manufacturing cost. For large and complex parts with high performance requirements, it is difficult to guarantee the overall performance of the parts using traditional connection methods. Using laser cladding connection technology, titanium alloy structural part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 吴复尧刘黎明许沂王斌程卫文
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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