scholarly journals Effect of Pressure on Dendrite Structure and Characteristics of Carbides during Solidification Process of H13 Die Steel Ingot

2021 ◽  
Author(s):  
Hongchun Zhu ◽  
Huabing Li ◽  
Zhiyu He ◽  
Hao Feng ◽  
Zhouhua Jiang ◽  
...  
Keyword(s):  
Steel Ingot ◽  
Solidification Process ◽  
Dendrite Structure ◽  
Die Steel ◽  
Effect Of Pressure ◽  
H13 Die Steel

Effect of Pressure on Inclusion Number Distribution During the Solidification Process of H13 Die Steel Ingot

2020 ◽  
Vol 51 (6) ◽  
pp. 2976-2992
Author(s):  
Hong-Chun Zhu ◽  
Hua-Bing Li ◽  
Zhi-Yu He ◽  
Hao Feng ◽  
Zhou-Hua Jiang
Keyword(s):  
Steel Ingot ◽  
Solidification Process ◽  
Die Steel ◽  
Effect Of Pressure ◽  
Number Distribution ◽  
H13 Die Steel

Comparison of material transfer in electrical discharge machining of AISI H13 die steel

2009 ◽  
Vol 223 (7) ◽  
pp. 1733-1740 ◽  
Author(s):  
S Kumar ◽  
R Singh ◽  
T P Singh ◽  
B L Sethi
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Tungsten Powder ◽  
Material Transfer ◽  
Die Steel ◽  
Cent Increase ◽  
Aisi H13 ◽  
Copper Chromium ◽  
H13 Die Steel ◽  
And Tungsten

The electrical discharge machining (EDM) process is extensively used in the tool and die making industry for accurate machining of internal profiles in hardened materials. Although it is essentially a material removal process, efforts have been made in the recent past to use it as surface treatment method. This article investigates and compares the effect of material transfer from electrode bodies (copper, copper—chromium, and copper—tungsten) and tungsten powder suspended in the dielectric medium during die-sinking EDM of AISI H13 die steel. Results show a 76 per cent increase in micro-hardness by machining with a copper—tungsten electrode and a 111 per cent increase by machining with tungsten powder mixed in the dielectric. The copper—chromium electrode gives the best surface roughness (Ra) value of 2.67 μ m. Scanning electron microscopy and X-ray diffraction analysis of the machined surfaces show alloying of parent material with tungsten and tungsten carbide. Chemical composition of the machined surfaces was further checked on an optical emission spectrometer to verify the results. Besides a significant presence of tungsten, an increase in the percentage of carbon is also observed.

Thermodynamic Analysis and Observation of Inclusions in H13 Die Steel with Rare Earth

2013 ◽  
Vol 690-693 ◽  
pp. 193-196
Author(s):  
Xiao Liu ◽  
Jing Long Liang
Keyword(s):  
Rare Earth ◽  
Thermodynamic Analysis ◽  
Electron Spectroscopy ◽  
Thermodynamic Calculation ◽  
Metallographic Examination ◽  
Die Steel ◽  
H13 Die Steel

The effect of RE on modifying inclusions of H13 die steel was studied by metallographic examination, SEM and electron spectroscopy. Thermodynamic calculation was used to analyze the formation of RE inclusions in H13 die steel. The result shows that sulfide inclusions are modified to round RE complex inclusions after adding RE to H13 die steel.

Process Optimization of Hardening on H13 Die Steel by Diode Laser Based on Orthogonal Experiment

Applied laser ◽  
2015 ◽  
Vol 35 (3) ◽  
pp. 314-318
Author(s):  
林继兴 Lin Jixing ◽  
曹洪钢 Cao Honggang ◽  
牛丽媛 Niu Liyuan ◽  
童先 Tong Xian ◽  
李光玉 Li Guangyu ◽  
...  
Keyword(s):  
Diode Laser ◽  
Process Optimization ◽  
Orthogonal Experiment ◽  
Die Steel ◽  
H13 Die Steel

The Studies on Numerical Simulation of Unidirectional Solidification Process in 23t Steel Ingot

2012 ◽  
Vol 502 ◽  
pp. 46-50
Author(s):  
Guang Wu Ao ◽  
Ming Gang Shen ◽  
Zhen Shan Zhang ◽  
Li Li Hong
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Temperature Distribution ◽  
Steel Ingot ◽  
Side Wall ◽  
Solidification Process ◽  
Unidirectional Solidification ◽  
Finite Element Software ◽  
Solidification Processes

In this paper, by using the commercial finite-element software of ProCAST, unidirectional solidification processes in 23t steel ingot were simulated. Emphasis is placed on analysis of required time for complete solidification of steel ingot and temperature distribution about ingot and side wall during the solidification process. By comparing simulation values and measured values of side wall during the solidification process, the simulated results conclusively demonstrate that our developed model is feasible and valuable.

scholarly journals Influence of Alloy Elements on Cracking in the Steel Ingot during Its Solidification

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 836 ◽  
Author(s):  
Junli Guo ◽  
Guanghua Wen
Keyword(s):  
Carbon Content ◽  
Cooling Rate ◽  
Steel Ingot ◽  
Solidification Process ◽  
Solidification Shrinkage ◽  
Liquid Feeding ◽  
Peritectic Solidification ◽  
Longitudinal Cracks ◽  
Cracking Tendency ◽  
Solidification Crack

The average steepness of |dT/d(fs)1/2| on the T − (fs)1/2 curve were calculated during peritectic solidification, which was used to investigate the effect of alloying elements on surface longitudinal cracks of peritectic steels in the solidification process. The value of |dT/d(fs)1/2| indicates the liquid feeding capacity between interdendrites during solidification, where cracks can easily occur if there is poor capacity of liquid feeding, as in peritectic solidification shrinkage. The cracking tendency as a function of carbon content was well described by the |dT/d(fs)1/2| at the cooling rates of 0.5, 5, and 10 °C/s, and the influences of other solute elements on |dT/d(fs)1/2| were also calculated. The results indicate that the possibility of crack occurrence increased and the maximum average steepness |dT/d(fs)1/2| changed from 496.75 °C located near 0.09C wt.% to 622.14 °C near 0.11C wt.% with increasing cooling rate. The value of |dT/d(fs)1/2| on the T − (fs)1/2 curve during the peritectic solidification can be used to analyze the solidification crack for peritectic steels.

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