Forging heads, device and method of electric arc additive limit stroke high-frequency micro-forging impact strengthening

Abstract

The invention belongs to the field of metal additive manufacturing, and relates to forging heads, a device and a method of electric arc additive limit stroke high-frequency micro-forging impact strengthening. The forging heads comprise a first forging head and a second forging head, the first forging head comprises a cylindrical first forging head base part and a first forging head forging part located at the top end of the first forging head base part, the first forging head forging part is provided with first forging head forging surfaces, the first forging head forging surfaces are symmetrically arranged on the four sides of the first forging head forging part, and the first forging head forging surfaces are planes, and are used for forging a cladding layer in the process of additive manufacturing to form the cladding layer. According to the designed impact forging heads, forging and modifying can be conducted on materials with different stress characteristics, and the forging efficiency is high; and the alloy materials are used, so it is guaranteed that the forging heads have the good toughness and hardness, and the additive manufacturing-forging-combined composite machining process efficiency is improved.

Description

technical field [0001] The invention belongs to the field of metal additive manufacturing, and relates to an arc additive limited-stroke high-frequency micro-forging impact strengthening forging head, a device and a method. Background technique [0002] In recent years, the additive manufacturing technology industry has developed rapidly. Its rapid prototyping technology without molds has continuously shortened the preparation cycle of large and complex structural parts. Compared with laser, electron beam, etc. The arc additive manufacturing technology based on the surfacing welding principle uses the arc as the heat source, and the metal wire feeding method can quickly and cost-effectively manufacture complex parts, which can further improve structural efficiency and achieve lightweight and high-performance structures. [0003] In the arc additive forming process, the reciprocating movement of the welding torch causes the thermal physical process of the heat accumulation of...

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Problems solved by technology

[0005] Aiming at the defects of the above-mentioned prior art, the present invention provides a forging head, device and method for impact strengthening of arc-added materials with limited stroke and high-frequency micro-forging. The adjustment of forging parameters such as forging frequency, job type switching timing, and single forging time can overcome the shortcomings of the known residual stress removal treatment of welded parts, and can achieve the refinement of metallographic grains in the weld area, eliminate residual stress, and effectively prevent welding. The generation of cracks and bubbles improves the mechanical properties and machining properties of the weld area, and solves the problem that large-scale special-shaped weldments cannot be heat-treated to eliminate residual stress

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