The options are unlimited when it comes to choosing a welding helmet. They can be conveniently classified based on the shades, sensors and viewing size. Having the right helmet can enhance the productivity and improve the weld quality making you feel comfortable. Moreover, it should satisfy the ANSI Z87.1-2003 a standard making sure it has passed independent testing standards so that it can survive the impact of high velocity flying objects, offering 100% protection from ultraviolet and infrared filtering irrespective of the shade setting that was hardly available in old fashioned welding helmet https://ohsonline.com/Articles/2017/04/01/Welding-Safety-Best-Practices.aspx explains the safety standards of welding helmets. It has to meet the shade setting and the prescribed switching speed as advertised. The darker shade has to be 23 degrees F low and 131 degrees F high.
Comparing Passive and Auto-Darkening lens
The welding lens shade is determined by its ability to filter light. Most of the auto-darkening helmets protect from UV rays and range in the #8 shade suggestive for low amp application ranging up to #13 shade for high amp applications. There are additional ranges between #3 to #8 for cutting or grinding purposes.
Helmets with the passive lens are coated with UV, or IR tinted glasses and comes with a fixed shade value of #10. This type of helmet is worn in an upright position, and the electrode is held in a gun or torch position. The helmet can be flipped into position by the snap of the neck. Though they are economical, it comes with a few shortcomings.
· Position the electrode could be difficult for a novice welder especially to snap the helmet in place. This can lead to weld defects and poor start.
· The welder may have to repeatedly lower and lift the helmet leading to difficulty in tack welding and short welding exercise.
· The helmet has to be flipped repeatedly causing neck fatigue for the welder and in some cases can cause stress-related injuries.
· If the helmet does not lock properly, it can lead to injuries due to arc flashes
For this purpose, the auto-darkening lens addresses the problem. An auto darkening lens with a shade of #3 or #4 is easy to see through. Once the arc starts is sensed by the sensor the lens darkens and within a fraction of a second, it turns shade #8 to #13. Moreover, the helmet stays in position for a long duration even after the weld. In the case of auto-darkening welding helmet, it enables you to set the joint and the hood position. With this, there are no more headaches of head snaps to the lower helmet. It also prevents lowering and raising the helmet for tack welds. With no disturbances, it helps to improve the performance and quality of the weld. No more worries of neck strain either as the helmet snaps perfectly fine.
Use of old-fashioned welding helmets can lead to repetitive stress injuries. Get instant relief with standardized auto-darkening helmets. It is reported by Forbes that the use of auto-darkening helmets have reduced workers compensation insurance rate with fewer emergencies being reported due to arc flashed eyes.