What Shade Of Lens Should Be Worn When Welding With Acetylene?

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You’d like this filter to appear like when you have a regular size soldering torch. The flame is so low with a small torch you don’t have to think about it as protection is necessary. You can see what is going on with a certain kind of filter if you find things too luminous. 

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Oxyacetylene fires may be hot enough, especially if they are used to provide any ultraviolet as a neutral or even oxidizing flames, such as platinum, but any glass lens, shaded or not, will obstruct these low levels. Any moderate UV protection sunglass lens would do likewise. A bigger fire can also produce enough radiant heat. 

You would have needed some sort of protection (is the flame warm enough and you are facial close enough for you to feel the heat?

But once again, it doesn’t take much for the measurements you chat with the torch. Shade 5 is perfect if you have torch welding steel or something else that is just as soft. But you will not be able to see what you’re doing, if you are soldering gold or silver, with a hue of five, that would be a good sign that you have too much filter…

Start with a shadow too dim to see the weld zone as a rule of thumb. Then go to a lighter shade that provides a vision of the weld zone without going under the max. 

When welding or cutting the fuel gas where the torch creates a strong yellow light, a filter lens that absorbs the yellow or sodium line in the visible light of the activity of (spectrum) is required.

Such meanings are true where the arc is clearly visible. There have been observations where lighter filters can be used if the workpiece covers the arc.

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