Milling performance of titanium alloy based on short electric arc machining with direct current power source

2020 ◽  
Vol 110 (5-6) ◽  
pp. 1641-1652
Author(s):  
Kai Liu ◽  
Jianping Zhou ◽  
Zongjie Zhou ◽  
Yan Xu ◽  
Guoyu Hu ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Direct Current ◽  
Power Source ◽  
Electric Arc ◽  
Milling Performance

scholarly journals Design and Construction of a Laboratory-Scale Direct-Current Electric Arc Furnace for Metallurgical and High-Titanium Slag Smelting Studies

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 732
Author(s):  
Botao Xue ◽  
Lingzhi Yang ◽  
Yufeng Guo ◽  
Feng Chen ◽  
Shuai Wang ◽  
...  
Keyword(s):  
Direct Current ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Melting Time ◽  
Furnace Lining ◽  
Arc Furnace ◽  
Titanium Slag ◽  
Design Requirements ◽  
Metallized Pellets ◽  
The Heat Balance

A novel direct-current electric arc furnace (DC-EAF) was designed and constructed in this study for experimentally investigating high-titanium slag smelting, with an emphasis on addressing the issues of incomplete separation of metal and slag as well as poor insulation effects. The mechanical components (crucible, electrode, furnace lining, etc.) were designed and developed, and an embedded crucible design was adopted to promote metal-slag separation. The lining and bottom thicknesses of the furnace were determined via calculation using the heat balance equations, which improved the thermal insulation. To monitor the DC-EAF electrical parameters, suitable software was developed. For evaluating the performance of the furnace, a series of tests were run to determine the optimal coke addition under the conditions of constant temperature (1607 °C) and melting time (90 min). The results demonstrated that for 12 kg of titanium-containing metallized pellets, 4% coke was the most effective for enrichment of TiO2 in the high-titanium slag, with the TiO2 content reaching 93.34%. Moreover, the DC-EAF met the design requirements pertaining to lining thickness and facilitated metal-slag separation, showing satisfactory performance during experiments.

scholarly journals Experimental study on high-efficiency DC short electric arc milling of titanium alloy Ti6Al4V

2021 ◽  
Author(s):  
Zongjie Zhou ◽  
Kai Liu ◽  
Yan Xu ◽  
Jianping Zhou ◽  
Lizhong Wang
Keyword(s):  
Titanium Alloy ◽  
Electrode Material ◽  
Material Removal ◽  
Electrode Materials ◽  
Arc Discharge ◽  
Specific Energy Consumption ◽  
Base Material ◽  
Electric Arc ◽  
Tool Electrode ◽  
Q235 Steel

Abstract Short electric arc milling (SEAM) is an efficient electrical discharge machining method, especially for the efficient removal of difficult-to-machine conductive materials with high hardness, high toughness, and wear resistance. In this study, titanium alloy Ti–6Al–4V is used as the research object to conduct machining experiments. The material removal mechanism of SEAM technology is studied using a DC power supply and different tool electrode materials (copper, graphite, Q235 steel, and titanium). The energy distribution of the discharge gap is analyzed using a data acquisition system and a high-speed camera. The arc is found to move with the spindle rotation in the process of arc discharge, and multi-point discharge occurs in the process of single-arc discharge. The voltage and current waveforms and the radius of the etched particles during the experiment were counted, the material removal rate (MRR) and relative tool wear rate (RTWR) are calculated, and the surface and cross-section micromorphology and hardness are analyzed. The experimental results show that when the electrode material is graphite, the maximum feed rate is 650 mm/min, the MRR can reach 17268 mm3/min, the ideal maximum MRR is more than 65000 mm3/min, and the RTWR is only 1.27%. When the electrode material is Q235 steel, the minimum surface roughness is 35.04 µm, and this material has good stability under different input voltages. When the electrode material is copper, the hardness of the resolidified layer is close to that of the base material, which is beneficial for further processing. The lowest specific energy consumption is 18.26 kJ/cm3 when titanium is used as the electrode material.

Acoustic Monitoring of Plasma Arcs in Direct Current Electric Arc Furnaces

2009 ◽  
Vol 40 (6) ◽  
pp. 886-891 ◽  
Author(s):  
J.J. Burchell ◽  
C. Aldrich ◽  
J.J. Eksteen ◽  
T.R. Niesler ◽  
G.T. Jemwa
Keyword(s):  
Direct Current ◽  
Acoustic Monitoring ◽  
Electric Arc ◽  
Electric Arc Furnaces ◽  
Arc Furnaces

Investigation of the Milling Performance about Titanium Alloy Based on Orthogonal Experiment

2010 ◽  
Vol 44-47 ◽  
pp. 2867-2871
Author(s):  
Ke Yan Tang ◽  
Li Hua Zhou ◽  
Li Song
Keyword(s):  
Titanium Alloy ◽  
Orthogonal Experiment ◽  
Milling Process ◽  
Machining Accuracy ◽  
Milling Force ◽  
Milling Parameters ◽  
Milling Performance ◽  
Orthogonal Experiments ◽  
Ta15 Titanium Alloy ◽  
Single Factor Experiment

The milling process has been widely used for manufacturing aeronautical materials. It is very important to choose the reasonable milling parameters for improving the machining accuracy and surface quality. In this paper, the orthogonal experiments are made to construct the relationships between the milling force and milling parameters to TA15 titanium alloy. And the milling parameters mainly include milling speed, milling depth, milling width and feed engagement. And the empirical equations of milling force are gotten by regression analysis, and the equations are tested to be correct by the single factor experiment. The result is quite important for further research on the milling performance and can serve as a reference to production of titanium alloys.

Test and Analysis of Electric Arc Machining Characteristics of Titanium Alloy and High-Temperature Alloy

2015 ◽  
Vol 667 ◽  
pp. 123-129
Author(s):  
Hai Peng ◽  
Yang Zhai
Keyword(s):  
Titanium Alloy ◽  
High Temperature ◽  
Processing Parameters ◽  
Electric Arc ◽  
High Temperature Alloy ◽  
Processing Efficiency ◽  
Good Surface ◽  
Machining System ◽  
Metallurgical Structure ◽  
Processing Properties

The short electric arc machining technique is a new type of strong current processing method, which has many advantages, especially for difficult-to-machine materials, such as no cutting force, small cutting chips, easy to chip removal, high processing efficiency and so on. In this paper, the electric arc processing cutting performance of two typical difficult-to-machine materials, titanium alloy and high-temperature alloy, was studied by electric machining cutting experiment to analyze the influence of arc processing on the properties of materials. Using the designed electric arc machining system, the effect of electrical processing parameters on processing properties was discussed. Furthermore, the surface layer hardness and materials metallurgical structure were detected to study the change of material internal organization and the effects on material properties change, which provide the corresponding theoretical analysis basis for arc machining of difficult-to-machine materials. Experimental results show that the titanium alloy and high-temperature alloy have small heat affected zone and hardening layer after electric arc processing, which could meet the requirement of subsequent machining to obtain a good surface quality.

Hourglass Triboelectric Nanogenerator as a “Direct Current” Power Source

2017 ◽  
Vol 7 (19) ◽  
pp. 1700644 ◽  
Author(s):  
Chuan He ◽  
Chang Bao Han ◽  
Guang Qin Gu ◽  
Tao Jiang ◽  
Bao Dong Chen ◽  
...  
Keyword(s):  
Direct Current ◽  
Power Source ◽  
Triboelectric Nanogenerator

scholarly journals THE RESEARCH OF PSEUDO COATINGS SPRAYED WITH ELECTRIC ARC SPRAY / PSEUDODANGŲ, UŽPURKŠTŲ ELEKTROLANKINIU BŪDU, TYRIMAS

2017 ◽  
Vol 8 (6) ◽  
pp. 602-608
Author(s):  
Tomas Rodžianskas ◽  
Ovidijus Jarašiūnas ◽  
Irmantas Gedzevičius ◽  
Gediminas Mikalauskas ◽  
Justinas Gargasas ◽  
...  
Keyword(s):  
Power Source ◽  
Electric Arc ◽  
Arc Spraying ◽  
Main Task ◽  
Arc Spray ◽  
Tribological Coatings ◽  
Steel Aisi ◽  
Aisi 316 ◽  
Spraying Process ◽  
Stainless Steel Aisi

The paper presents coatings obtained using two different stainless steel (AISI 316) and marine bronze (CuAl8) wires sprayed with electric arc spraying. Substrate: mild steel S235J2 (LST EN 10025: 2004). Arc spray equipment – “EuTronic Arc Spray 4” with an additional power source. The main task was to select optimal technological spraying process and obtain coatings which possess the best mechanical, physical, tribological properties that meet the requirements of the specific requirements in service coatings. The microhardness, elastic modulus, and morphology was examined. Dry friction wear was assessed in the mass loss of the coatings. The results of tribological coatings properties were assessed in determining the mass lost. Straipsnyje nagrinėjamos elektrolankinio purškimo būdu suformuotos dangos, gautos užpurškus dvi skirtingas pilnavidurės nerūdijančiojo plieno (AISI 316) ir jūrinės bronzos (CuAl8) vielas. Substratas – mažaanglis plienas S235J2 (LST EN 10025:2004). Elektrolankinio purškimo įranga – „EuTronic Arc Spray 4“ su papildomu srovės šaltiniu. Eksperimentų metu siekiama parinkti optimalų technologinį purškimo procesą ir gauti dangas, pasižyminčias geriausiomis mechaninėmis, fizikinėmis, tribologinėmis savybėmis, kurios atitinka konkrečius keliamus reikalavimus eksploatuojamoms dangoms. Nustatytas dangų mikrokietumas, tamprumo modulis ir nagrinėta dangų morfologija. Dangų tribologiniai rezultatai vertinti nustatant prarastąją bandinių masę.

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