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.

Study of TI64 Vibration Laser Metal Deposition Process

2011 ◽  
Vol 189-193 ◽  
pp. 512-517 ◽  
Author(s):  
Xue Yong Chen ◽  
Todd Sparks ◽  
Jian Zhong Ruan ◽  
Frank Liou
Keyword(s):  
Design Of Experiments ◽  
Grain Refinement ◽  
Crystalline Structure ◽  
Vibration Frequency ◽  
Deposition Process ◽  
Metal Deposition ◽  
Laser Deposition ◽  
Laser Metal Deposition ◽  
Direct Deposition ◽  
Laser Direct Deposition

This paper presents the usage of vibration in laser direct deposition of Ti64. The vibration is used to refine the crystalline structure of the deposition. The vibration device vibrates in the laser deposition system along the Z axis. 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 microhardness over that of samples from no-vibration. Also, vibration frequency is a significant factor. From the experiment results, it is found that a vibration frequency greater than 20Hz is desirable.

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.

Development of Bio-Compatible Metallic Structures Using Direct Metal Deposition Process

2012 ◽  
Vol 576 ◽  
pp. 141-145
Author(s):  
Syed H. Riza ◽  
Syed H. Masood ◽  
Cui'e Wen ◽  
William Song
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Laser Power ◽  
Deposition Process ◽  
Metal Deposition ◽  
Direct Metal Deposition ◽  
Metal Powders ◽  
Micro Hardness ◽  
Metallic Structures ◽  
Ti6al4v Titanium Alloy

This paper investigates the capabilities of Direct Metal Deposition (DMD) process, which is a novel additive manufacturing technique, for creating structures that can be used as bone implants. Emphasis is on the use of bio-compatible metals, because metals are the most suitable materials in terms of mechanical strength when the requirement arises for supporting and replacing the load bearing bones and joints such as hip and knee. Specimens using two different metal powders, 41C stainless steel and Ti6Al4V titanium alloy, are generated by DMD process on mild steel and titanium plates as substrates respectively. Metallographic samples were made from the cladding, and tested for surface roughness and micro-hardness. The results indicate that at low laser power, hard and strong structures with good porosity can be successfully created using the DMD system.

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