Electromagnetic Stirring Assisted Laser Rapid Forming of Nickel-based Alloy Parts

A nickel-based alloy and laser-assisted technology, which is applied in the direction of additive manufacturing, process efficiency improvement, additive processing, etc., to achieve the effects of inhibiting pores and cracking, improving mechanical properties, and improving organizational structure

Inactive Publication Date: 2018-01-26
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, these problems are mainly determined by the process characteristics of laser rapid prototyping itself and the limitations of current technical conditions. They cannot be completely solved by adjusting the process parameters of laser rapid prototyping and subsequent processing. They must be supplemented by some special technical means. Row

Method used

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  • Electromagnetic Stirring Assisted Laser Rapid Forming of Nickel-based Alloy Parts
  • Electromagnetic Stirring Assisted Laser Rapid Forming of Nickel-based Alloy Parts
  • Electromagnetic Stirring Assisted Laser Rapid Forming of Nickel-based Alloy Parts

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Embodiment Construction

[0021] The technical solution of the present invention will be further described below in combination with specific embodiments.

[0022] Use metallographic sandpaper and acetone solution to polish and clean the surface of the 306 stainless steel substrate, and then place it on the laser rapid prototyping machine tool;

[0023] Connect the coaxial powder feeding nozzle and electromagnetic stirrer to the laser head, and use the numerical control system to move it to the starting processing position;

[0024] will be composed of Ni 65.8 Cr 15 B 3.0 Si 3.5 C 0.7 Fe 12 , The nickel-based alloy with a particle size of 45-180 μm is placed in the barrel of the coaxial powder feeder, and the powder feeder is turned on to start the power supply, and the powder feeding rate is adjusted to 3.5g / min;

[0025] Turn on the electromagnetic stirrer switch, adjust its frequency to 50Hz, and adjust the magnetic field strength to 10-90mT;

[0026] The start switch of the powder feeder and...

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Abstract

The invention belongs to the field of advanced additive manufacturing, and relates to an electromagnetic stirring-assisted laser rapid forming nickel base alloy part. It is characterized in that the coaxial powder feeder nozzle and the electromagnetic stirrer are assembled on the laser head, and then moved according to the scanning track of each layer of graphics, and the electromagnetic stirring assisted laser rapid prototyping of nickel-based alloy parts is performed. The parts formed by the invention have a fine and uniform structure, no internal defects such as pores and cracks, excellent mechanical properties, various types of materials, unlimited forming size, high degree of automation, and easy operation. It can meet the requirements of aerospace, machinery, The need for "near net shape" of metal parts in the fields of automobile and military industry.

Description

technical field [0001] The invention belongs to the field of advanced additive manufacturing, and relates to an electromagnetic stirring-assisted laser rapid forming nickel base alloy part. Background technique [0002] Laser rapid prototyping is an advanced additive manufacturing technology developed on the basis of laser cladding technology and rapid prototyping technology. High-performance complex structural parts with non-equilibrium solidification structure characteristics can be directly and quickly manufactured without any proprietary molds. It has many advantages such as flexibility, high performance, and high precision. But at the same time, there are many technical challenges and scientific problems that need to be overcome and solved urgently. One of the key issues is how to effectively control the solidification structure, quality, precision and performance of laser rapid prototyping so that it can meet the actual needs of engineering applications. [0003] La...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y10/00C22C19/05B33Y70/00
CPCC22C19/058B33Y10/00B33Y70/00B22F2999/00B22F10/00B22F10/322B22F10/25B22F10/36B22F12/53B22F2202/05Y02P10/25
Inventor 王存山于群
Owner DALIAN UNIV OF TECH
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