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

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 A Newly-developed High Wear Resistant Cast Hot-forging Die Steel

2007 ◽  
Vol 47 (9) ◽  
pp. 1335-1340 ◽  
Author(s):  
Shugi Wang ◽  
Feng Wang ◽  
K. M. Chen ◽  
Xianghong Cui
Keyword(s):  
Hot Forging ◽  
Wear Resistant ◽  
Die Steel ◽  
Hot Forging Die ◽  
Forging Die

Research on Thermal Wear of Cast Hot Forging Die Steel Modified by Rare Earths

2007 ◽  
Vol 25 (1) ◽  
pp. 88-92 ◽  
Author(s):  
Cui Xianghong ◽  
Wang Shuqi ◽  
Jiang Qichuan ◽  
Chen Kangmin
Keyword(s):  
Rare Earths ◽  
Hot Forging ◽  
Die Steel ◽  
Hot Forging Die ◽  
Thermal Wear ◽  
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 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%.

Giga cycle fatigue behavior of hot forging die steel

2003 ◽  
Vol 2003.1 (0) ◽  
pp. 145-146
Author(s):  
Takeshi Yamashita ◽  
Ryuichiro Ebara ◽  
Katsuaki Kubota
Keyword(s):  
Fatigue Behavior ◽  
Hot Forging ◽  
Cycle Fatigue ◽  
Die Steel ◽  
Hot Forging Die ◽  
Forging Die
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