A device with controllable temperature gradient in forming area of ​​laser additive manufacturing and its realization method

A laser additive and temperature gradient technology, which is applied in the directions of additive manufacturing, additive processing, and process efficiency improvement, to achieve practical and convenient, strong applicability, and ingenious design.

Active Publication Date: 2022-03-08
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
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AI Technical Summary

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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  • A device with controllable temperature gradient in forming area of ​​laser additive manufacturing and its realization method
  • A device with controllable temperature gradient in forming area of ​​laser additive manufacturing and its realization method

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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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PUM

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Abstract

The invention discloses a device with controllable temperature gradient in the forming area of ​​laser additive manufacturing, which includes a platform, a support and fastening base, a stepping motor fixed to the bottom of the support and fastening base, and arranged on one side of the supporting and fastening base The first groove of the first groove, the rotating rod coaxially connected with the stepper motor at one end, the well-type resistance heating mechanism installed in the first groove, the superalloy that is set in the well-type resistance heating mechanism and driven up and down by the rotating rod A mold, 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 superalloy mold matches the shape of the first groove. The invention also provides a realization method of the device with controllable temperature gradient in the laser additive manufacturing forming area. The invention can heat and control the temperature of the substrate, ensure the temperature gradient of the forming area, reduce the risk of thermal stress cracking and the overall residual stress of the formed part in the process of forming and repairing.

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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Patent Type & Authority Patents(China)
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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