Every welder must not forget about personal protective equipment. During the welding process, sparks and splashes of molten metal inevitably fly into the face. In addition, thermal and infrared radiation affects the eyes. To protect against all these negative factors, use protective masks and shields. The latter are less preferable, since they need to be held with one hand, which is not very convenient. That is why let's talk about how to choose a “chameleon” welding mask and what are its key features.
Why exactly the "chameleon"?
Many experts say that welding chameleon-type masks are the most progressive and protect the operator’s vision well. This is true because of the presence of an automatic filter. He himself reacts to a change in the intensity of the glow. For example, when the arc is ignited, it automatically darkens, which indicates the start of welding, while the operator’s eyes will be protected. In most cases, high-quality filters have a layered structure. LCD layers overlap each other. When welding starts, they line up in the right order and block a certain part of the light, making the operator's work comfortable and safe. But it is worth noting that, before choosing a “chameleon” welding mask, it is necessary to understand its main parameters. Let's talk about this.
Briefly about the features of glass
We already learned a little about the fact that the "chameleon" masks are equipped with an automatic light filter. It is interesting that the welder does not need to do anything, since the liquid crystal filters themselves adjust to the brightness and intensity of the light. It is from here that the name of the mask "chameleon" came from.
If you are not a professional welder and are engaged in such work quite rarely, then a single-layer filter is suitable for you. If welding is your daily work, and your eyes are constantly under load, then a multilayer filter is needed. Work in such a mask will be not only safe, but also comfortable. In addition, the dimming does not affect the operator's view and the seam visibility in any way. Of course, filters are different, so the prices for seemingly identical masks differ.
About design features
If we understand in more detail the design features of the filter, then it is a multilayer product. In this case, each layer is formed by liquid crystals. And between the layers a polarizing film is inserted . When light enters the crystals, they line up in a certain direction, which allows you to partially block the radiation and darken it.
But we can say that the chameleon masks are famous for their protection against ultraviolet and infrared radiation. Some models may not provide such protection due to the presence or absence of an additional layer in the filter. By the way, before choosing a “chameleon” welding mask, check the speed of the darkening of the filter. The higher it is, the higher the price of the product will be. But it is worth noting that this is a rather important characteristic. The fact is that there are masks, the filter of which only works a few minutes after the start of welding. During this time, the operator can get a corneal burn. The optimal response speed can be considered 0.00005 seconds. This will provide reliable protection from the very beginning of welding work.
Chameleon welding masks: how to choose the right model
Before buying, you need to pay attention directly to the mask. It should not be plastic or too fragile. Therefore, it often makes sense to give preference to heavy masks. Any model should be well and comfortably worn and removed. Any discomfort during operation can affect the quality of the weld. In addition, the presence of a light filter makes the mask a complex electronic-optical device, so you need to handle it carefully. It is undesirable to allow moisture, condensation, etc. to enter. In addition, mechanical damage to the filter makes it ineffective, and the operator’s eyes become vulnerable. In principle, you already know what characteristics a “chameleon” welding mask should have. How to choose from the whole assortment? There is nothing complicated, for this it is necessary to take into account a number of characteristics.
What to look for when buying
First of all, look at the optical class of the filter. This setting is crucial for protecting your eyesight. Professional models can be considered masks and helmets that have three units in the filter marking, for example, 1/1/1/2. This ensures reliable eye protection as well as undistorted vision. After the optical class, look at the response speed, it should be at least 100 microseconds.
Many masks of the welder “chameleon” (including “Invertica”) have different degrees of protection and blackout. The best option is when the glass in the normal state (not working) is completely transparent, and during welding - dark. But even a darkened filter should not contain haze or distortion on its surface. The best indicator is the degree of protection 13 DIN. One of the useful features that must be available is the smooth dimming of the filter. This option is extremely useful in low light conditions.
Weight and dimensions
In particular, it makes sense to talk about the size of the working window. The best models are equipped with a rather large window, which greatly improves the view of the welder during operation. The price of such models, of course, is rather big, but the process of connecting metal products will be completely controlled by the operator. As for weight, it should not be too small. “Cardboard” masks very quickly fail due to their low strength. Thick-walled models weighing more than 1 kg tire the welder, which is also bad. Therefore, it is better to choose a middle ground, say, 400-700 grams. By the way, before choosing a “chameleon” mask, pay attention to the mount. It should have two positions: the mask is in working condition and is raised up. At least that's what professionals say. This will allow, without removing the mask from the head, at the end of welding work to inspect the quality of the seam and immediately continue the work begun.
Welding masks "chameleon": design, types, application
The design of the masks in most cases is almost the same. Some models have a larger window, others a smaller one. Of course, it is better to give preference to the first option, since the review in this case is much higher. But an increase in visibility leads to the fact that the filter becomes more fragile, so something average will suit you.
As for the type of mask, it is selected depending on the welding work performed. Usually we are talking about a different welding glass in relation to the rated current. Currently, the following masks can be found on sale: 4-9 DIN glass - current up to 40 A, 5-11 glass for 175A current, 6-12-300A, 7-13-500A. For domestic use, the first two groups are suitable. Their scope is usually limited to utilities, construction and some other industries. At the same time, masks with a high index of blackout, that is, 3-4th groups, are used in aircraft manufacturing, engineering, metallurgy and so on.
About the Chameleon Helmets
Do not forget that you have the opportunity to buy a helmet, not a mask. It is usually used in harsh conditions. For example, at high temperatures, a long welding process. Also, if there is a danger of getting a thermal burn, then it is necessary to use not glasses or a mask, but only a helmet. Its design completely repeats the shape of a motorcycle helmet. But here it is made of lightweight and durable plastic. Therefore, if you do not know how to choose the “chameleon” welding mask correctly, then pay attention to what kind of work you will have to do. It is possible that you need a helmet.
Points for welding "chameleon"
If you plan short-term welding, where there is no need for additional face protection, then glasses will do. This solution is relatively cheap when compared to masks and helmets. Glasses give the welder an excellent overview, as they represent one large screen. As for the parameters for protecting glass, they are no worse than masks and helmets. Typically, prices start at 800 rubles and above, which depends on the manufacturer. Many consumers for welding in domestic conditions are advised to purchase glasses. They are lightweight, comfortable and protect your eyes well.
What professionals say
We have already figured out a bit what a mask for welding "chameleon". How to choose? Recommendations and reviews of consumers and professionals will definitely help you. So, many are advised to purchase domestically produced “chameleon” masks. They have an affordable price and reasonable quality. But, according to experts, they are not best suited for argon welding. If we talk about Chinese products, then it is cheap, but not too reliable. Filters can be delayed and open spontaneously. For professionals, only high-quality European products are suitable.
Conclusion
So, how to choose the best "chameleon" welding mask? A definite answer cannot be given. The fact is that you need to be guided by your own needs. Sometimes you don’t need something too expensive. There is enough glass with parameters 5-9 DIN for a welding current of 40 A. This will not be a very expensive purchase. But for work at home, such a mask is quite enough. If you are a professional welder, then the product should be appropriate. Basically, this is all that can be said about how to choose a “chameleon” welding mask.