scholarly journals Research of deformation compensation method in laser metal deposition process of 316L stainless steel product

2021 ◽  
Vol 2077 (1) ◽  
pp. 012010
Author(s):  
A Kovchik ◽  
K Babkin ◽  
A Vildanov
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Deposition Process ◽  
Metal Deposition ◽  
Laser Metal Deposition ◽  
Steel Product ◽  
Deformation Degree ◽  
Shrinkage Effect ◽  
Product Manufacturing ◽  
Deformation Compensation

Abstract It is exists the problem of big product manufacturing with minimal dimensions tolerances. To solve this problem it is necessary to compensate the deformations influence. In researching of method, it became clear that deformation degree has changed and depended on size and form of part. However, the amount of deformation degree to dimension of part is still independent of size. This fact has observed after production of axis-symmetrical parts. The simple axis-symmetrical part was built up. The dimensions of part was measured, and the compensation coefficient was calculated. The dimensions of part was scaled on this coefficient for compensation of shrinkage effect. After that the experiment was repeated.

Study of Ultrasonic Vibration Laser Metal Deposition Process

2012 ◽  
Author(s):  
Xueyong Chen ◽  
Todd Sparks ◽  
Jianzhong Ruan ◽  
Frank Liou
Keyword(s):  
Stainless Steel ◽  
Ultrasonic Vibration ◽  
316L Stainless Steel ◽  
Steel Powder ◽  
Deposition Process ◽  
Metal Deposition ◽  
Laser Deposition ◽  
Laser Metal Deposition ◽  
Micro Hardness ◽  
Laser Direct Deposition

This paper presents the usage of ultrasonic vibration in laser direct deposition of 316L (stainless steel) powder. Ultrasonic vibration is used to refine the crystalline structure of the deposition. The ultrasonic vibration device vibrates in the laser deposition system along the Z axis while the system is performing metal deposition. A design of experiments approach is applied in studying the effect of vibration on the deposited material. Vibration during deposition led to grain refinement and an increase in micro-hardness. Also, vibration frequency is a significant factor in determining microstructure.

A Study of Microstructure and Surface Hardness of Parts Fabricated by Laser Direct Metal Deposition Process

2010 ◽  
Vol 129-131 ◽  
pp. 648-651 ◽  
Author(s):  
Mehdi Soodi ◽  
Milan Brandt ◽  
Syed H. Masood
Keyword(s):  
Stainless Steel ◽  
Tool Steel ◽  
316L Stainless Steel ◽  
Surface Hardness ◽  
Deposition Process ◽  
Metal Deposition ◽  
Direct Metal Deposition ◽  
Significant Difference ◽  
Aluminium Bronze ◽  
Hardness Values

This paper presents an investigation on the microstructure and surface hardness of the parts fabricated by laser assisted Direct Metal Deposition (DMD) technology. A series of engineering metallic alloy powders were used in the DMD process to produce simple 3D geometric structures. The alloy powders investigated include: 316L stainless steel, 420 Stainless Steel, Stellite(R) 6, tool steel (H13), Cholmoloy (Ni Based alloy), and Aluminium Bronze. These were chosen due to their frequent application in engineering parts and components. The microstructure and hardness values have been compared to those of the wrought products (as annealed) as reported in the SAE standards, Heat treater’s guide to metals ASM international, and material data sheets supplied by the materials manufacturers. A significant difference is reported in both hardness and microstructure of the laser deposited samples compared to those of the wrought form.

Influence of laser absorption by water- and gas-atomised powder feedstock on Laser Metal Deposition of AISI 431 stainless steel

2021 ◽  
pp. 102242
Author(s):  
Andre Hatem ◽  
Christiane Schulz ◽  
Thomas Schlaefer ◽  
Jeff T. Boobhun ◽  
Nikki Stanford ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Metal Deposition ◽  
Laser Metal Deposition ◽  
Laser Absorption ◽  
Powder Feedstock
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