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GMAW: Gas type vs wire speed

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发表于 2021-8-31 23:36:51 | 显示全部楼层 |阅读模式
Quick question.... does the type of gas you have usually affect the wire speed needed?  ie.  I have a CO2 argon mix, and I usually have to bump my wire speed up a bit (30-90 ipm) depending upon my voltage setting.  The chart gets me close, but I am always bumping it up.  I haven't ever tried another gas mix, so I was wondering if the type of gas being used can contribute to the wire being consumed faster or not.The Lord has declared, "This is my work and my glory--to bring to pass the immortality and eternal life of man"  Moses 1:39Link: My name is John, and I am a member of The Church of Jesus Christ of Latter-Day Saints.-- ColdCreekWorks.com --
Reply:Yes, it may affect wire speed.  Different gases offer different resistance characteristics across the arc, and consequently affect heat which may have to be compensated for accordingly.
Reply:in a roundabout way: yes.  Gas type effects the amount of heat put into the metal, and is also affects your parameter range.  it effects where you end up setting your voltage and amperage. of course amperage is directly related to wfs so that means you have to increase or decrease your WFS.  This in turn means you have to weld slightly faster or slower for the same amount of heat.Off the top of my head Argon takes about 5-15% higher amperage for the same amount of energy into the pool. But it has a much larger parameter range which means you can go lower and higher on the dial.  Those charts are at best a useful hint that gets you in the right direction. And are very generic, things like long cables, etc will throw you off from the chart in a hurry.Welding EngineerCertified Scrap Producer
Reply:Thank you everyone.  I think my mixture is 80/20 (my supplier doesn't provide 75/25 --- at least I don't think they do).The Lord has declared, "This is my work and my glory--to bring to pass the immortality and eternal life of man"  Moses 1:39Link: My name is John, and I am a member of The Church of Jesus Christ of Latter-Day Saints.-- ColdCreekWorks.com --
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