2015年4月21日 · VIM/VAR, double vacuum, will give you super clean material, with least inclusions. some nuclear and medical applications specify it must be VIM/VAR. Normally static cast, concast is sufficient. Arc+VAR or ARC+ESR is better. VIM/VAR is superior. Carpenter even uses triple melting VIM+ESR+VAR for lots of aerospace applications (not for 304L)

2003年1月17日 · We machine low sulfur, low inclusion VIM/VAR stainless steel every day. The Sulfur in 316 is specified at a maximum of 0.030%, and the producers add Sulfur back in for product intended for fabrication by machining, as Sulfur significantly improves machinability.

2022年12月3日 · depending on volume, Cartech can offer many versions of 316 with slightly different compositions and melting combinations. they can do arc-AOD, VIM, VIM+VAR, VIM+ESR, or even triple melting. interestingly, VIM+ESR 316L is a bit clearer than VIM+VAR in terms of inclusion rate, which is preferrable for some medical applications.

2011年4月19日 · Both ESR and VAR processes can produce a high quality product. However, there are some nickel alloys (like Inconel 625/AMS 5599) that are widely available in air melt quality. These nickel alloys are used more for their corrosion and high temperature capabilities than their ultimate strength.

2004年2月4日 · VAR also provides a microstructure that is typically better than conventionally cast ingots. By far the most common VAR steel is 15-5 stainless. VAR is also the preferred refining process for nickel-based superalloys. ESR, or electroslag remelting, uses an electrically conductive slag through which the arc is struck and molten metal drops through.

2024年3月7日 · VIM/VAR or VIM/ESR 304 is cleaner than regularly melted 304. i had customers ordered both VIM/VAR and VIM/ESR 304 for medical and watch applications asking for least inclusions to control polish process (watch) and implant (medical).

2009年5月28日 · SEMI F20 VIM/VAR Ultimate 1. monkeydog; Oct 31, 2013; Steel and Stainless engineering; Replies 3 Views 267 ...

2002年7月15日 · SEMI F20 VIM/VAR Ultimate 1. Thread starter monkeydog; Start date Oct 31, 2013; Status

2004年11月16日 · Where I can get the metal-foil samples that made by superclean stainless steel ? like 316L VIM/VAR(double vacuume treatment) The thickness I need is about 50~100um, the size is about 170mm width. What's the best surface roughness I can get ? and I need to know the price and min.order. Thank everyone very much.

2023年6月29日 · However, it should be noted that even when using VIM and VAR methods, it is not always possible to achieve the desired level of cobalt content in steel. The effectiveness of these methods depends on many factors, such as the initial cobalt content of the material, smelting and remelting process parameters, and the thoroughness of quality control.