Effects of Laser Cladding Process on Cladding Layer Qualities of Nickel-Base Alloy

2014 ◽  
Vol 1028 ◽  
pp. 90-95 ◽  
Author(s):  
Chun Cheng Zang ◽  
Yan Zhong Wang ◽  
Yi Du Zhang
Keyword(s):  
Laser Cladding ◽  
Alloy Powder ◽  
Base Alloy ◽  
Scanning Speed ◽  
Processing Parameters ◽  
Nickel Base Alloy ◽  
Cladding Layer ◽  
Laser Cladding Process ◽  
Nickel Base ◽  
Overlap Ratio

Nickel-base alloy powder is widely applied to strengthen the surface of products through laser processing. This paper presents the experiments on laser cladding of Ni45 alloy powder on substrates of 45 steel. The experimental results show that the laser cladding processing parameters such as laser power, scanning speed, powder feed rate and overlap ratio have great effects on the qualities of the cladding layer. Optimizing the processing parameters is an effective way to improve the layer qualities and obtain desired cladding layers.

Nickel Base Alloy Powder Spray Welding Process Application in Production

2013 ◽  
Vol 813 ◽  
pp. 129-131
Author(s):  
Yu Hai Xu ◽  
Yu Ping Zhao
Keyword(s):  
Alloy Powder ◽  
Base Alloy ◽  
Welding Process ◽  
Slag Inclusion ◽  
Thin Coating ◽  
Nickel Base Alloy ◽  
Parent Metal ◽  
Workpiece Surface ◽  
Welding Technology ◽  
Nickel Base

In this paper, we study Spray welding technology has been widely used in our country, it is between the spraying and welding process, the workpiece surface after spray welding coating is thin and smooth, dilution rate is extremely low, the deposited layer and base metal metallurgy, high bonding strength, density, and coating no slag inclusion, porosity and oxidation is suitable for occasions with thin coating. In 45Mn parent metal, for example, this paper mainly introduces the application of the technology in production.

Preparation of Ni-Base Alloy Coatings on Monel Alloy by Laser Cladding

2012 ◽  
Vol 472-475 ◽  
pp. 313-316 ◽  
Author(s):  
Chun Hua Zhang ◽  
Yu Xi Hao ◽  
Lin Qi ◽  
Fang Hu ◽  
Song Zhang ◽  
...  
Keyword(s):  
Phase Composition ◽  
Laser Cladding ◽  
Surface Hardening ◽  
Alloy Powder ◽  
Base Alloy ◽  
Dendritic Structure ◽  
Eutectic Phase ◽  
Inconel 625 ◽  
Cladding Layer ◽  
The Matrix

Abstract. The paper presents the results of a study concerned with the surface hardening of Inconel 625 alloys and Ni-base alloy powder on Monel alloy by electro spark deposition and laser cladding processes. The microstructure, the phase composition and the microhardness of samples are investigated by SEM, EDS, XRD and microhardness instrument. It is shown that, the matrix phase is mainly made up of dendritic structure (γ-Ni), interdendritic eutectic phase (Ni3(B,Fe,Si)) and some precipitates (Cr7C3, Cr23C6). Additional, the microhardness of laser cladding layer can be substantially increased, duo to formation of precipitates.

scholarly journals Geometry Analysis and Microhardness Prediction of Nickel-Based Laser Cladding Layer on the Surface of H13 Steel

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 408
Author(s):  
Fangping Yao ◽  
Lijin Fang ◽  
Xiang Chen
Keyword(s):  
Laser Cladding ◽  
Laser Power ◽  
Polynomial Regression ◽  
Scanning Speed ◽  
Processing Parameters ◽  
H13 Steel ◽  
Cladding Layer ◽  
Geometry Analysis ◽  
The Relationship ◽  
Powder Feeding

In order to improve the resistance to thermal fatigue and wear resistance of H13 hot-working tool steel, a nickel-based composite coating was prepared on its surface by laser cladding technology. The relationship was studied between the main processing parameters and the size of the cladding layer such as height and width. Based on the orthogonal polynomial regression method, the relationships were modeled mathematically between laser power, scanning speed, powder feeding voltage and microhardness. This model was proved to be able to predict the laser power and powder feeding voltage under 1100 Hv microhardness.

Influence of Preheating Temperature on Mechanical Properties of Laser Cladding Layer

2016 ◽  
Author(s):  
Jibin Jiang ◽  
Guofu Lian ◽  
Mingsan Xu ◽  
Chunyu Li ◽  
Bingsan Chen ◽  
...  
Keyword(s):  
Residual Stress ◽  
Laser Cladding ◽  
Heat Affected Zone ◽  
Processing Parameters ◽  
Cladding Layer ◽  
Laser Cladding Process ◽  
Preheating Temperature ◽  
Substrate Preheating ◽  
Physical And Chemical ◽  
Cladding Layers

Physical and chemical changes always occur in the process of laser cladding, and the cladding quality is directly affected by processing parameters. This paper mainly focused on effects of temperature field of preheating substrate on the cladding quality. Laser cladding process has the following experimental parameters: laser power, powder feeding rate and rotational speed. Three types of cladding powders were used: Ni60A, Cr12MoV and WC-Co. Experiments were conducted by using different substrate preheating temperatures and cladding materials, which affect the quality of cladding layers. Comparison and analysis of the three types of powders showed that under different preheating temperatures, the cladding layer is mainly affected by tensile stress. Besides that, the residual stress of cladding layer is always higher than that of heat affected zone and substrates. The best preheating temperature to test the residual stress for three types of powders are: 600°C, 400°C and 300°C. For all three types of powders under different preheating temperatures, cladding layer and substrate have compact and uniform structures. However, when substrate is overheated the cracking will occur in the substrate. Under different preheating temperatures, the Vickers hardness is higher than that of heat affected zone and the substrate for all three materials. The preheating temperatures for getting the maximum hardness are respectively 300°C, 600°C and 400°C.

scholarly journals The Forming Control Method of Multi-Track Laser Cladding on Curved Surface

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1109
Author(s):  
Guofu Lian ◽  
Zhaozhen Liu ◽  
Yang Zhang ◽  
Meiyan Feng ◽  
Changrong Chen ◽  
...  
Keyword(s):  
Mathematical Models ◽  
Central Composite Design ◽  
Laser Cladding ◽  
Gas Flow ◽  
Scanning Speed ◽  
Processing Parameters ◽  
Curved Surface ◽  
Pore Area ◽  
Overlap Ratio ◽  
Central Composite

This paper investigated the correlation between the processing parameters and the properties of clad deposited by laser cladding on a curved surface. Mathematical models relating the processing parameters (laser power, scanning speed, gas flow, and overlap ratio) and clad properties (flatness ratio and pore area) were established by central composite design. Analysis of variance and experimental validation confirmed the validity of the models. The results indicated that the flatness ratio was negatively influenced by the larger scanning speed, gas flow, and overlap ratio, while the pore area was enlarged by the increasing of scanning speed, and increasing the overlap ratio lead to the pore area reducing at first and then increasing. Optimized processing parameters were obtained under the target of maximizing the flatness ratio and minimizing the pore area. The developed mathematical models enabled predicting the flatness ratio and pore area with optimized processing parameters. The validation experimental result verified the prediction accuracy of the models and displayed target improvement compared with the original central composite design. The results provide theoretical guidance in multi-track laser cladding on a curved surface for the prediction and control of the geometric characteristics of the coating and the optimization of the processing parameters. This research outcome provides guidance for the coating deposition application in crankshaft surface coating or surface restoration, rotary parts coating deposition, or complex shape tool manufacturing. It also forms the fundamental basis for the extensive application of multi-track laser cladding on curved substrates in the additive manufacturing industry.

Characteristics and printability of K417G nickel-base alloy powder prepared by VIGA method

2018 ◽  
Vol 62 (1) ◽  
pp. 30-37
Author(s):  
Wuming Jia ◽  
Suiyuan Chen ◽  
Mingwei Wei ◽  
Jing Liang ◽  
Changsheng Liu ◽  
...  
Keyword(s):  
Alloy Powder ◽  
Base Alloy ◽  
Nickel Base Alloy ◽  
Nickel Base
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