Vacuum arc remelting - Wikipedia
Vacuum arc remelting (VAR) is a secondary melting process for production of metal ingots with elevated chemical and mechanical homogeneity for highly demanding applications. [1] The VAR process has revolutionized the specialty traditional metallurgical techniques industry, and has made possible tightly-controlled materials used in biomedical ...
VAR is widely used to improve the cleanliness and refine the structure of standard air-melted or vacuum in-duction melted ingots (called consumable electrodes). VAR steels and superalloys as well as titanium and zirconium and its alloys are used in a great number of high-integrity applications where cleanliness, homogeneity, improved fatigue ...
镍基合金VIM+ESR+VAR三大熔炼工艺简析 - 知乎 - 知乎专栏
2018年8月18日 · 真空感应熔炼（vacuum induction melting，简称VIM）是在真空条件下，利用电磁感应，在金属导体内产生涡流加热炉料来进行熔炼的方法。 VIM可提供对化学成分最大程度的控制，防止熔液与大气中氢、氧、氮的接触。
A Parametric Study of the Vacuum Arc Remelting (VAR)
2019年10月29日 · The vacuum arc remelting (VAR) process is extensively used to purify numerous alloys such as stainless steel, Nickel-based, and Titanium-based alloys. It is a method of refining an impure alloy (electrode in VAR) through vacuum as heated by a DC arc. The tip of the electrode melts resulting in the formation of droplets.
Remelting Model and Cracking Criterion for Vacuum Arc …
2024年8月2日 · To enhance the quality of vacuum arc remelting (VAR) ingots in enterprises, a remelting model and cracking criterion was developed based on simulation and a series of designed experiments to predict the segregation behavior, shrinkage cavity, thermal stress, and cracking tendency of VAR ingot.
真空電弧再熔煉 - 维基百科，自由的百科全书
真空電弧再熔煉 （Vacuum arc remelting，常縮寫為 VAR）是一種生產無論在機械性質或在化學性質都具有高度 同質性 （英语：Homogeneity (physics)） 的 金屬 錠 （英语：ingot） 的製程。. [ 1 ] 真空電弧再熔煉製程可用於煉製特用鋼材，或用於煉製生醫、航太等嚴苛應用 ...
Numerical simulation and experimental study of vacuum ...
2023年5月1日 · The melting process includes three physical reaction regions: the arc gap (plasma formation), the electrode extremities (melting), and the ingot (melt pool flow and solidification). In this paper, we focus on the metallurgical quality of the ingot, with the arc plasma and electrode melting as boundary conditions.
Vacuum Arc Remelting | Casting - ASM Digital Library
The vacuum arc remelting (VAR) process is widely used to improve the cleanliness and refine the structure of standard air melted or vacuum induction melted (VIM) ingots. It is also used in the triplex production of superalloys. This article illustrates the VAR process and the capabilities and variables of the process.
2019年4月13日 · THE vacuum arc remelting (VAR) process is exten-sively used to purify numerous alloys such as stainless steel, Nickel-based, and Titanium-based alloys. It is a method of refining an impure alloy (electrode in VAR) through vacuum as heated by a DC arc. The tip of the electrode melts resulting in the formation of droplets.
A Future for Vacuum Arc Remelting and Electroslag ...
2023年9月23日 · In the secondary metals refining processes, vacuum arc remelting (VAR) and electroslag remelting (ESR), the consumable electrode is commonly produced by vacuum induction melting (VIM) which employs the regrettably primitive casting technique of simply pouring into the open top of the mold.
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