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Anonymous users2024-02-10There are many health hazards in electric welding operations, which can generally be divided into two categories: physical factors and chemical factors. The former has ultraviolet rays, infrared rays, etc., produced by high-temperature arc light. The latter is a variety of components of electrowelding aerosols, including various metals such as iron, manganese, aluminum, chromium, lead, nickel, radioactive elements, etc., and gases such as manganese oxide, hydrogen fluoride, and nitrogen oxides [1] in the gas phase.
High temperatures, vibrations, and noise are not very noticeable. It is mainly harmful to the eyes.
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Anonymous users2024-02-09The specific damage of electric welding to people mainly includes: ultraviolet rays and infrared rays. Burns and a small amount of radiation. Ultraviolet rays can cause eye redness, keratitis, and more. Infrared rays can cause cataracts.
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Anonymous users2024-02-08The following toxic and harmful substances are produced: welding fumes, carbon monoxide, manganese and its compounds, nitrogen oxides, ozone, and ultraviolet radiation.
1. Welding method.
According to the different heating and pressurization conditions during welding, it is usually divided into three categories: fusion welding, pressure welding and brazing.
2. Electric welding. It is a welding operation that uses the welding rod to melt the metal parts at high temperature through the arc to the place where they need to be connected.
3. The working principle of electric welding is:
With the commonly used voltage of 220V or 380V, the voltage is reduced through the transformer in the welding machine, the current is enhanced, and the electrical energy is generated to produce a huge arc heat to melt the electrode and the steel, and the electrode melting makes the steel more integrated.
4. Advantages of arc welding.
It is the most widely used welding method, including hand arc welding, submerged arc welding, tungsten gas arc welding, plasma arc welding, MIG/MAG welding, etc. Due to the use of power supply in arc welding, the high-temperature arc generated by it is easy to cause fire, and the danger is greater.
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Anonymous users2024-02-07The damage to the body of electric welding has physical and chemical damage, and the optical and magnetic radiation during welding has potential damage to human eyes and **.
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Anonymous users2024-02-06Hazards: 1. Long-term exposure to high-frequency electromagnetic fields.
It can cause autonomic nervous dysfunction and neurasthenia. Symptoms include general malaise, dizziness, headache, fatigue, loss of appetite, insomnia, and low blood pressure.
2. Welding arc radiation hazards.
There are mainly visible, infrared and ultraviolet light. They act on the human body, are absorbed by human tissues, and cause thermal, photochemical or ionization of tissues, causing damage to human tissues.
3. Workplace hazards.
Chronic manganese poisoning is mainly seen in workers who inhale manganese soot for a long time.
4. Manganese welding hazards.
Exposure to manganese is increased by industrial workers who are exposed to manganese ore mining and smelting, manganese electrode manufacturing, welding and wind-cut manganese alloys, and manufacturing and application of manganese dioxide, permanganate and other manganese compounds.
Extrapyramidal neurological symptoms are predominant, and there are neurobehavioral dysfunction and psychosis.
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Anonymous users2024-02-05The most harmful part of electric welding to the human body is the eyes, and welders generally have a professional mask to cover them, mainly for fear of hurting their eyes.
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