scholarly journals Filling Path Planning and Polygon Operations for Wire Arc Additive Manufacturing Process

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Jiansheng Zhang ◽  
Qiuyun Wang ◽  
Guiqian Xiao ◽  
Jie Zhou
Keyword(s):  
High Temperature ◽  
Additive Manufacturing ◽  
Path Planning ◽  
Attitude Control ◽  
Hot Forging ◽  
Outer Contour ◽  
Hot Forging Die ◽  
Forging Die ◽  
Wire Arc Additive Manufacturing ◽  
Filling Path

To improve the service life of hot forging die, the additive manufacturing algorithm and additive manufacturing device for die remanufacturing are developed. Firstly, a compound filling algorithm in which the inner zone is filled by linear scanning and the outer contour is filled by offsetting is developed in order to solve the problems encountered in filling path planning for wire arc additive manufacturing (WAAM) like staircase effect at marginal division, degenerated edge at outer contour, programming difficulty, and so forth. Meanwhile, the attitude control algorithm of welding gun is proposed to control the angle between welding gun and welding path so as to improve the welding forming quality. Secondly, the high-temperature and low-temperature wear resistances of Fe-based and Ni-based alloy are tested. The results show that Ni-based alloy has higher high-temperature wear resistance. Finally, a disabled crankshaft hot forging die is selected for application test and the results show that, using the techniques discussed in this paper, welding materials can be saved by more than 50% and machining cost can be saved by more than 60%. In addition, the surface of automatic-repaired die is smooth without oxidation, collapse, and other defects after forging 3000 times, which is much better than that of manual-repaired die.

scholarly journals Research on Gradient Additive Remanufacturing of Ultra-large Hot Forging Die Based on Automatic Wire Arc Additive Manufacturing Technology

2021 ◽  
Author(s):  
Xiaoying Hong ◽  
Guiqian Xiao ◽  
Yancheng Zhang ◽  
Jie Zhou
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Additive Manufacturing ◽  
Service Life ◽  
Hot Forging ◽  
Welding Parameters ◽  
Manufacturing Strategy ◽  
Hot Forging Die ◽  
Forging Die ◽  
Wire Arc Additive Manufacturing

Abstract In this paper, an automatic WAAM technology are proposed to realize the gradient additive remanufacturing of ultra-large hot forging dies. Firstly, a vertical additive manufacturing strategy and a normal additive manufacturing strategy are proposed to meet different additive manufacturing demands. Secondly, the basic principle of layering design of ultra-large hot forging dies is developed, and the wear resistance of Ni-based, Co-based and Fe-based alloys at room temperature and high temperature is analyzed. The Co-based alloy has the best high temperature wear resistance, which can be used on the surface of the hot forging die to strengthen the die. In order to control the forming quality of additive manufacturing, the relationship between welding parameters and weld shape was discussed, and the reverse system of welding process parameters was built. Finally, a typical aviation ultra-large hot forging die is selected as the research object. According to different stress and temperature distribution in different regions of the ultra-large hot forging die in service, materials with different properties are used in corresponding regions to improve the service life of the die, reduce the remanufacturing costs and improve the remanufacturing efficiency. The experimental results show that the service life of the hot forging die repaired by the automatic gradient function WAAM technology is significantly increased, the material is reduced by more than 50% and the production efficiency is increased by more than 50%.

scholarly journals Fractography of high temperature fracture surface of hot forging die steel.

1987 ◽  
Vol 36 (404) ◽  
pp. 513-519 ◽  
Author(s):  
Ryuichiro EBARA ◽  
Yoshikazu YAMADA ◽  
Tamotsu YAMADA ◽  
Katsuaki KUBOTA
Keyword(s):  
High Temperature ◽  
Fracture Surface ◽  
Hot Forging ◽  
Die Steel ◽  
Hot Forging Die ◽  
Temperature Fracture ◽  
Forging Die

Research on High-Temperature Wear Resistance of Laser Cladding Co-Based WC Composite Coating on Hot-Forging Die

Applied laser ◽  
2013 ◽  
Vol 33 (4) ◽  
pp. 370-375
Author(s):  
徐卫仙 Xu Weixian ◽  
张群莉 Zhang Qunli ◽  
姚建华 Yao Jianhua
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Composite Coating ◽  
Laser Cladding ◽  
Hot Forging ◽  
High Temperature Wear ◽  
Hot Forging Die ◽  
Forging Die

scholarly journals Path planning and kinematics simulation of surfacing cladding for hot forging die

2015 ◽  
Vol 21 ◽  
pp. 08005 ◽  
Author(s):  
Huajun Wang ◽  
Wanxia Fu ◽  
Hengan Ou ◽  
Xuan Tang
Keyword(s):  
Path Planning ◽  
Hot Forging ◽  
Hot Forging Die ◽  
Kinematics Simulation ◽  
Forging Die

scholarly journals DECOMPOSITION ALGORITHM FOR TOOL PATH PLANNING FOR WIRE-ARC ADDITIVE MANUFACTURING

2018 ◽  
Vol Vol.18 (No.1) ◽  
pp. 96-107 ◽  
Author(s):  
Lam NGUYEN ◽  
Johannes BUHL ◽  
Markus BAMBACH
Keyword(s):  
Additive Manufacturing ◽  
Path Planning ◽  
Computer Aided Design ◽  
Tool Path ◽  
Heuristic Method ◽  
Support Material ◽  
Build Time ◽  
Cad Models ◽  
Aided Design ◽  
Wire Arc Additive Manufacturing

Three-axis machines are limited in the production of geometrical features in powder-bed additive manufacturing processes. In case of overhangs, support material has to be added due to the nature of the process, which causes some disadvantages. Robot-based wire-arc additive manufacturing (WAAM) is able to fabricate overhangs without adding support material. Hence, build time, waste of material, and post-processing might be reduced considerably. In order to make full use of multi-axis advantages, slicing strategies are needed. To this end, the CAD (computer-aided design) model of the part to be built is first partitioned into sub-parts, and for each sub-part, an individual build direction is identified. Path planning for these sub-parts by slicing then enables to produce the parts. This study presents a heuristic method to deal with the decomposition of CAD models and build direction identification for sub-entities. The geometric data of two adjacent slices are analyzed to construct centroidal axes. These centroidal axes are used to navigate the slicing and building processes. A case study and experiments are presented to exemplify the algorithm.

scholarly journals A modular path planning solution for Wire + Arc Additive Manufacturing

2019 ◽  
Vol 60 ◽  
pp. 1-11 ◽  
Author(s):  
Florent Michel ◽  
Helen Lockett ◽  
Jialuo Ding ◽  
Filomeno Martina ◽  
Gianrocco Marinelli ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Path Planning ◽  
Wire Arc Additive Manufacturing
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