Welding is one of the most widely used metal material processing operations. From nuclear power generation to petrochemical development, from exploring space to deep sea resources development, from automobile production to home appliance manufacturing, welding operations are indispensable. Due to its wide range of applications, the impact of welding operations on occupational welders has received much attention from occupational health and environmental safety experts.
Occupational hazards known at the welding site are mainly eye and eye hazards and respiratory hazards. Eye and eye damage is caused by strong visible light in the welding arc, a large amount of ultraviolet light and infrared rays. Strong visible light can cause brief blindness and retinal burns, ultraviolet rays can cause arc eyes, cataracts and skin cancer, while infrared rays can cause burns to cataracts, retinas and corneas. In addition, the grinding process is often accompanied by a grinding operation, and splash metal particles generated during the grinding process can damage the eyes and the skin. Respiratory hazard is caused by various harmful gases and welding fumes generated by metal elements, coatings, protective gas and air in the base metal and welding consumables under the action of high temperature flame. They enter the human body through the respiratory tract to cause harm. For example, long-term inhalation of dust exceeding the lower limit concentration can cause diffuse fibrosis of lung tissue, which can lead to welder pneumoconiosis; long-term inhalation of particles of manganese and its compounds exceeding the allowable concentration may cause manganese poisoning, causing autonomic dysfunction, poisoning When it is heavy, turning, crossing, and squatting are more difficult. At present, for these two kinds of hazards, R & D personnel have developed automatic dimming welding masks, welding special masks, welding-specific electric air-supplied respirators, long-tube air-supplying respirators and other products for protection.
At the same time, for professional personal protective equipment, both characteristics should be prepared at the same time, namely safety and comfort. Under the premise of ensuring the safety of personal protective equipment, if the comfort is neglected, some harmful factors in the welding operation will still have a negative impact on the professional welders. Such as wearing a welding mask for a long time to cause cervical spondylosis caused by cervical strain; welding produces heat stress caused by high temperature radiation; wearing a welding mask or welding mask and breathing poorly, causing carbon dioxide in the mask to gather, causing fatigue of the welder; wearing welding Face masks that limit visibility and the inability to observe potential hazards in the workplace can pose a threat to the health and safety of occupational welders. Therefore, occupational welders need protective equipment that not only protects the eyes, face and respiratory hazards, but also avoids the above-mentioned hazards.
First, 3M SpeedglasTM 9100 automatic dimming welding mask
In 2009, 3M, the world leader in occupational health and environmental safety products, launched the 3M SpeedglasTM 9100 automatic dimming welding mask for the Chinese welding protection market (see Figure 1), which opened a new era for welder comfort welding.
3M SpeedglasTM Automatic Dimmer Welding Mask R&D team experts, environmental safety engineers, and ergonomics experts have learned about the three important expectations of welders for welding masks by visiting 500 professional welders around the world: they must have excellent protection Performance, extremely comfortable, safe and reliable. The SpeedglasTM 9100 automatic dimming welding mask meets the requirements of professional welders for welding protection with its superior design features.
The core component of the 3M SpeedglasTM 9100 automatic dimming welding mask is the automatic dimming lens (see Figure 2), which is mainly composed of a sensitized probe, UV/IR reflective protective sheet, grating/liquid crystal composite lens (see Figure 3) and digital circuit board. composition.
Before the welding, the automatic dimming screen is in a bright state. When the welding starts, the photosensitive probe receives the optical signal of the arc welding and converts it into an electrical signal and transmits it to the circuit board. The circuit board applies a voltage across the liquid crystal screen to make the composite The lens becomes black and is in a dark state; after the welding is completed, the arc welding signal disappears and the voltage across the composite lens disappears, so that the automatic dimming screen automatically changes from a dark state to a bright state (see Figure 4). In order to achieve the purpose of moving the lens without using mechanical action, the welder's hands are completely liberated. Ultraviolet and infrared reflective protective sheets are non-electronic control components that provide 100% protection from ultraviolet and infrared radiation at all times.
Occupational hazards known at the welding site are mainly eye and eye hazards and respiratory hazards. Eye and eye damage is caused by strong visible light in the welding arc, a large amount of ultraviolet light and infrared rays. Strong visible light can cause brief blindness and retinal burns, ultraviolet rays can cause arc eyes, cataracts and skin cancer, while infrared rays can cause burns to cataracts, retinas and corneas. In addition, the grinding process is often accompanied by a grinding operation, and splash metal particles generated during the grinding process can damage the eyes and the skin. Respiratory hazard is caused by various harmful gases and welding fumes generated by metal elements, coatings, protective gas and air in the base metal and welding consumables under the action of high temperature flame. They enter the human body through the respiratory tract to cause harm. For example, long-term inhalation of dust exceeding the lower limit concentration can cause diffuse fibrosis of lung tissue, which can lead to welder pneumoconiosis; long-term inhalation of particles of manganese and its compounds exceeding the allowable concentration may cause manganese poisoning, causing autonomic dysfunction, poisoning When it is heavy, turning, crossing, and squatting are more difficult. At present, for these two kinds of hazards, R & D personnel have developed automatic dimming welding masks, welding special masks, welding-specific electric air-supplied respirators, long-tube air-supplying respirators and other products for protection.
At the same time, for professional personal protective equipment, both characteristics should be prepared at the same time, namely safety and comfort. Under the premise of ensuring the safety of personal protective equipment, if the comfort is neglected, some harmful factors in the welding operation will still have a negative impact on the professional welders. Such as wearing a welding mask for a long time to cause cervical spondylosis caused by cervical strain; welding produces heat stress caused by high temperature radiation; wearing a welding mask or welding mask and breathing poorly, causing carbon dioxide in the mask to gather, causing fatigue of the welder; wearing welding Face masks that limit visibility and the inability to observe potential hazards in the workplace can pose a threat to the health and safety of occupational welders. Therefore, occupational welders need protective equipment that not only protects the eyes, face and respiratory hazards, but also avoids the above-mentioned hazards.
First, 3M SpeedglasTM 9100 automatic dimming welding mask
In 2009, 3M, the world leader in occupational health and environmental safety products, launched the 3M SpeedglasTM 9100 automatic dimming welding mask for the Chinese welding protection market (see Figure 1), which opened a new era for welder comfort welding.
3M SpeedglasTM Automatic Dimmer Welding Mask R&D team experts, environmental safety engineers, and ergonomics experts have learned about the three important expectations of welders for welding masks by visiting 500 professional welders around the world: they must have excellent protection Performance, extremely comfortable, safe and reliable. The SpeedglasTM 9100 automatic dimming welding mask meets the requirements of professional welders for welding protection with its superior design features.
The core component of the 3M SpeedglasTM 9100 automatic dimming welding mask is the automatic dimming lens (see Figure 2), which is mainly composed of a sensitized probe, UV/IR reflective protective sheet, grating/liquid crystal composite lens (see Figure 3) and digital circuit board. composition.
Before the welding, the automatic dimming screen is in a bright state. When the welding starts, the photosensitive probe receives the optical signal of the arc welding and converts it into an electrical signal and transmits it to the circuit board. The circuit board applies a voltage across the liquid crystal screen to make the composite The lens becomes black and is in a dark state; after the welding is completed, the arc welding signal disappears and the voltage across the composite lens disappears, so that the automatic dimming screen automatically changes from a dark state to a bright state (see Figure 4). In order to achieve the purpose of moving the lens without using mechanical action, the welder's hands are completely liberated. Ultraviolet and infrared reflective protective sheets are non-electronic control components that provide 100% protection from ultraviolet and infrared radiation at all times.
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