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Laser additive manufacturing forming area temperature gradient controllable device and implementation method thereof

A laser additive and temperature gradient technology, applied in the direction of additive manufacturing, additive processing, process efficiency improvement, etc.

Active Publication Date: 2020-07-07
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the problems existing in the prior art, the present invention provides a laser additive manufacturing forming area that can regulate the temperature gradient of the forming area during the forming process and reduce the thermal stress cracking, deformation, and structural differences of the parts. Device with controlled temperature gradient

Method used

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  • Laser additive manufacturing forming area temperature gradient controllable device and implementation method thereof
  • Laser additive manufacturing forming area temperature gradient controllable device and implementation method thereof

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Embodiment

[0031] Such as Figure 1 to Figure 2As shown, the temperature gradient controllable device in the laser additive manufacturing forming area includes a platform 1, a support and fastening base 2, a stepping motor 3, a rotating rod 4, a well-type resistance heating mechanism 6, a superalloy mold 7, and a thermocouple Temperature measuring mechanism 9, substrate 10, forming area 11, laser cladding head 12, motion control system 13, heating control system 14, temperature control feedback system 15, first groove 16, second groove 17, action controller 18 , Nut 19 and rotating space 20 etc. Wherein, the platform 1 is used for processing; the supporting and fastening base 2 is fixed on the platform 1, and is used for installing and fixing the stepping motor 3; the stepping motor 3 is fixed on the bottom of the supporting and fastening base 2 and is supported by the platform 1, and its It is coaxially connected with the rotating rod 4; the action controller 18 is arranged on the step...

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Abstract

The invention discloses a laser additive manufacturing forming area temperature gradient controllable device. The device comprises a platform, a supporting and fastening base, a stepping motor fixed to the bottom end of the supporting and fastening base, a first groove formed in one side of the supporting and fastening base, a rotating rod with one end coaxially connected with the stepping motor,a well-type resistance heating mechanism installed in the first groove, a high-temperature alloy mold arranged in the well-type resistance heating mechanism and driven by the rotating rod to move up and down, a thermocouple temperature measuring mechanism, a substrate, a laser cladding head located above the substrate, a forming area, a motion control system, a heating control system and a temperature control feedback system, wherein the high-temperature alloy mold is matched with the first groove in shape. The invention further provides an implementation method of the laser additive manufacturing forming area temperature gradient controllable device. According to the device and the implementation method, the substrate can be heated and subjected to temperature control, the temperature gradient of the forming area is guaranteed, and the thermal stress cracking risk and the overall residual stress of a formed part in the forming and repairing process are reduced.

Description

technical field [0001] The invention relates to the field of laser additive manufacturing, in particular to a device with controllable temperature gradient in a forming area of ​​laser additive manufacturing and a method for realizing the same. Background technique [0002] Laser additive manufacturing technology (a type of 3D printing technology) mainly uses high-energy beam laser to form a molten pool on the alloy substrate, and simultaneously sends alloy powder or wire into the molten pool to melt and solidify, and then accumulate and form point by point . Compared with traditional casting and powder metallurgy technology, it has the advantages of no mold, short cycle time and low cost, and plays an important role in the rapid prototyping and repair of high-performance metal parts with complex structures. At present, domestic and foreign research institutions and related scholars have carried out a lot of research work on the equipment, process, structure and performance...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y30/00B33Y50/02B33Y10/00
CPCB33Y30/00B33Y50/02B33Y10/00B22F2207/15B22F10/00B22F10/368B22F12/30B22F10/25B22F12/90B22F12/17B22F10/80Y02P10/25
Inventor 魏怡芸徐庆东王述钢杨磊莫文林
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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