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Metal solid state deposition device and method and material with metal layer on surface

A deposition device, metal layer technology, applied in additive processing, pressure inorganic powder coating, additive manufacturing, etc., can solve the problems of energy waste, inability to achieve uniform stress relief, limited use effect, etc., to achieve a wide range of applications, eliminate Effect of Coating Cracking Risk

Pending Publication Date: 2022-06-28
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the material and size of the parts, it is not suitable to use post-processing to remove the internal stress of the coating
Although the laser head can be re-introduced to post-process the material, the laser irradiation can only act on the surface of the material, and the temperature of the material from the surface to the inside will change from high to low, and uniform stress relief cannot be achieved.
At the same time, the application of multi-laser technology has complicated process and high cost, and the use of high laser reflection metals and alloy materials such as silver, copper, aluminum, and platinum is limited.
Laser also has low photoelectric conversion rate, low energy utilization rate, and energy waste.

Method used

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  • Metal solid state deposition device and method and material with metal layer on surface
  • Metal solid state deposition device and method and material with metal layer on surface
  • Metal solid state deposition device and method and material with metal layer on surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] In this embodiment, the base body 11 is 45# steel, and the metal powder 13 is 316L stainless steel powder.

[0058] The Rafael nozzle 130 faces the surface of the substrate 11 at an included angle of 90 degrees, and the hollow channel of each electromagnetic induction coil faces the surface of the substrate 11. The Rafael nozzle 130 is linked with the electromagnetic induction coil, and the moving trajectories overlap to scan the surface of the substrate 11. .

[0059] The high-frequency current generated by the special power transformer (power 250KW, oscillation frequency 200KHz) is connected with the first electromagnetic induction coil 110 and the second electromagnetic induction coil 120 to form a strong alternating magnetic field; the magnetic field generated by the first electromagnetic induction coil 110 A magnetic circuit is formed with the area to be deposited, so that a vortex-like induced current is generated on the surface of the substrate 11, and the surfac...

Embodiment 2

[0067] This embodiment is basically the same as Embodiment 1, the only difference is that the oscillation frequency is 50KHz.

[0068] After testing, the bonding strength of the 316L coating prepared on the surface of 45# steel in this example is 62MPa, the thickness of the single-layer coating (the coating after scanning once on the surface of the substrate 11) can be greater than 0.3mm, and the overall coating (on the substrate 11) thickness can be greater than 0.3mm. The thickness of the overall coating after multiple surface scans can be greater than 5 mm, the entire deposition body does not appear transverse / longitudinal cracks, and the coating porosity is less than 0.4%.

Embodiment 3

[0070] This embodiment is basically the same as Embodiment 1, the only difference is that the oscillation frequency is 400KHz.

[0071] After testing, the bonding strength of the 316L coating prepared on the surface of 45# steel in this example is greater than 80MPa, the thickness of the single-layer coating (the coating after scanning the surface of the substrate 11 once) can be greater than 0.2 mm, and the overall coating (on the substrate 11) thickness can be greater than 0.2 mm. The thickness of the overall coating after multiple scans on the surface can be greater than 3mm, the entire deposition body does not appear transverse / longitudinal cracks, and the coating porosity is less than 0.8%.

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Abstract

The invention relates to the technical field of metal solid deposition, and provides a metal solid deposition device and method and a material with a metal layer on the surface. The metal solid deposition device comprises a first electromagnetic induction coil, a nozzle and a second electromagnetic induction coil which are sequentially arranged, the nozzle is located between the first electromagnetic induction coil and the second electromagnetic induction coil, and the axis of the first electromagnetic induction coil and the axis of the second electromagnetic induction coil are parallel to the orientation of the nozzle. The metal solid deposition additive manufacturing method adopts the device to deposit the metal layer on the surface of the substrate, and comprises the steps that the substrate is scanned in the mode that the first electromagnetic induction coil, the nozzle and the second electromagnetic induction coil sequentially pass through the surface of the to-be-deposited area of the substrate, and the nozzle faces the surface of the substrate all the time during scanning. The material of the metal layer is prepared by the additive manufacturing method. According to the scheme provided by the invention, the interface bonding between the particles and the matrix and between the particles is optimized, and the risk of coating cracking caused by introduction of thermal stress is also eliminated.

Description

technical field [0001] The present invention relates to the technical field of metal solid state deposition, and in particular, to a metal solid state deposition device, method and material having a metal layer on the surface. Background technique [0002] Metal solid-state deposition is based on high-pressure gas as the acceleration energy source. By accelerating the micron-sized particles entering the Lafael nozzle, the micron-sized solid particles collide with the surface of the substrate to be deposited at a very high speed. A new type of deposition technology that completes the deposition by plastic deformation. Compared with the traditional material deposition technology of material melting and solidification, in the process of metal solid-state deposition, the material is always in a solid state, and the particles are not prone to oxidation, decomposition, grain growth and other phenomena during the manufacturing process, which can make the composition and microscopic...

Claims

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Application Information

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IPC IPC(8): C23C24/04B22F12/53B22F12/90B22F12/17B22F10/10B22F10/50B22F10/85B33Y30/00B33Y50/02B33Y40/00B33Y10/00B33Y80/00
CPCC23C24/04B22F12/53B22F12/90B22F12/17B22F10/10B22F10/50B22F10/85B33Y30/00B33Y50/02B33Y40/00B33Y10/00B33Y80/00
Inventor 谢迎春邓畅光禇欣兰海明
Owner GUANGDONG INST OF NEW MATERIALS
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