Improving the efficiency of welding machines is associated not only with the expansion of their functionality. Manufacturing companies strive to make devices as accessible as possible to non-specialists who can perform welding operations at home. This is due to the development of remedies. Domestic models of such devices give intense ultraviolet radiation, in the process of operation, the appearance of a spark is inevitable, and the most dangerous side effect is splashes of molten metal. Accordingly, the future user is faced with the question: “How to choose a mask of a welder who can reliably protect against unpleasant consequences during the course of work?” For this, you need to familiarize yourself with the offers of the modern market.
The easiest and most affordable version of the welding mask, which, however, provides a minimum level of protection and functionality. The device of such a device includes a shield, equipped with a filter with dimming, and a special pen to hold. This is the most common option that comes bundled with inexpensive household appliances. Despite the obvious drawbacks, such a welder mask has one significant positive quality - by moving it away from the face, the master will be able to directly inspect the resulting seam. But this plus is crossed out by the need to hold the mask in his hand. And this is despite the fact that the second hand should be occupied by the welding machine itself.
Models of this type have recently been considered the optimal solution for the welder. It differs from the previous version by the possibility of fixation on the head by means of fastening. Also the master in the process of work can evaluate the result by raising the mask. After that, she goes down with a simple nod. Among the advantages that this type of welder mask has is the ease of handling it during the work process and the unoccupied second hand. But there is a minus, expressed in the absence of eye protection when lifting the mask.
Masks with lifting light filters
Such models can be considered as the last modification of traditional masks with light filters. Their fundamental difference is the presence in the construction of a plastic shield, which protects the eyes, even at times when the filter is raised. This innovation allowed operators to perform related operations, including grinder cutting and slag beat. At the same time, the protective filter, which, in addition to tinted glass, included a coating layer and plexiglass as a substrate, has noticeably improved. With the development of technology and this model faded into the background. She was moved by the mask of the welder "Chameleon", reviews of which mark its convenience, high degree of safety and functionality.
Features and device mask "Chameleon"
In the filters of such masks the technology of polarization of liquid crystals is used. The protective screen device assumes the presence of a liquid crystal layer between the polarization films. In the process of welding, the effective voltage corrects the parameters of the LCD layer, preventing the passage of unwanted light fluxes. In modern light filters, different amounts of liquid crystal layers can be used. In addition to them, the screen includes a filter designed to work with ultraviolet and infrared spectra. Its function has nothing to do with LCD layers and acts autonomously. Also the mask of the welder "Chameleon" is supplied with sensors that recognize the arc, electronic regulating devices, and also comes with batteries in the form of batteries and accumulators.
Characteristics of the filter "Chameleon"
The key operating parameter of the Chameleon is the trigger period to ensure reliable eye protection. In the newest models this time is less than 1 millisecond, which is one of the best indicators against the background of competing masks. But this time is also relative, since it depends on the characteristics of the environment. For example, the mask of the welder "Chameleon" in conditions of negative temperature will not be able to provide sufficient speed of darkening. The lower temperature limit for operating such filters is -50 degrees. But for the sake of justice, it is worth noting that during the work in the cold, the inside of the mask still gives noticeable heat provided by the filter warmed from the welding arc.
Adjustment of the light filter
First of all, modern welding requires the ability to adjust the dimming. The arc can have a different level of brightness - it depends on the strength of the current and in general on the parameters of the workflow. In the standard version, the glass for the mask of the welder provides for dimming the filter within 9-13 DIN. In the non-darkened state, the filter has a tinting level of 3-4 DIN.
No less important are the characteristics of sensitivity, the settings of which will determine the response of the device. The master adjusts the sensitivity of on and off, focusing on the radiation of the heated material and the same brightness of the arc. This option can be useful in the process of welding in the sun - in this case, it helps to eliminate the risk of untimely switching on the light filter.
More advanced models provide other adjustment options, including changing the angle of sensory perception of the arc. By the way, the number of sensors can vary, which directly affects the quality of work. For example, the mask of the welder "Chameleon FUBAG" in the 992450 series has four sensors, through which you can more accurately track the state of the arc.
The quality of optical performance, perhaps, is one of the main criteria for choosing a light filter. The model may well have a whole range of options and adjustment capabilities, but if the optics itself is poorly implemented, even wide functionality will be useless. Therefore, in work, the protective mask of a welder with a reliable and durable light filter is more effective than its counterpart with a mass of settings and several layers of attractive externally but not always useful replaceable glasses.
Pay attention to the following characteristics:
- Optics class. It depends on the clarity of the image. For example, in first-class models, the distortion of objects is excluded;
- Light scattering This parameter determines the level of transparency of the filter;
- Homogeneity. Adjusting the blackout of a light filter largely depends on the uniformity of the radiation - this is the homogeneity of the optics;
- The degree of angular dimming. This indicator determines the dependence of the depth of darkening on the angle at which the viewing is carried out.
All listed properties can belong to one of three classes. Manufacturers label their models with the designation of the parameters that the specific mask of the welder “Chameleon” possesses. User reviews and expert opinions confirm the undoubted advantage of optics, which has light scattering, homogeneity and the degree of angular darkening of the first class.
Other selection criteria
Before buying it is necessary to take into account the parameters of the visible area, which will allow a more reliable assessment of the quality of work. It is believed that the vastness of the visible zone is the advantage of the mask. This is partly true, but it is important to understand that a large area affects the strength of the light filter - the smaller it is, the more reliable. It is also necessary to correlate the type of welding operations and their conditions with the characteristics available to the welder’s mask and its filter. Modern models are more often developed as universal. For example, a model with a specific light filter can be used both in work with argon arc welding and in automatic welding operations, and will successfully cope with stick electrodes. But there are exceptions, so you should pay attention to the labeling.
Of course, the technical parameters and functionality of the masks for welding are paramount selection criteria. But if the mask does not fit the elementary size under the head, its use will negate all the advantages of the device. For this reason, the welder mask should be selected taking into account the size, overall design of the headgear, weight, mounting methods and size adjustment options. Particular attention is paid to the depth of landing and the angle of inclination. It would be nice if the mask also allows you to adjust the interval between the light filter and the head. The adjustment system must be strong, reliable and ergonomic. Sometimes it makes sense to provide additional features, such as the availability of space for a respirator.
Reviews about masks "Chameleon"
Light filters of this type, of course, far advanced masks for welding in terms of safety and manufacturability as a whole. Compared to traditional models, they benefit in all respects. For example, owners note that hands can remain free from the beginning to the end of the work process, additional heating is provided in the cold, and there is no talk about radiation and speech - filters perfectly cope with their function.
But there are also disadvantages that the mask of the welder also possesses. Reviews of users who regularly deal with welding work, criticize the glass for scratching and rapid discharge of the battery. On the other hand, it is possible to insure against such phenomena even at the stage of selection of the apparatus. The problem with batteries should be solved by optimal selection of the capacity of the power source in a particular model. The magnitude of the charge can be quite high, so this minus is more likely to be attributed to an oversight during the purchase process. The situation is more difficult with the formation of scratches. As a rule, they occur on the protective surfaces of Plexiglas, and the only way out can be the rejection of this material.