What are the physical effects of long term burn welding and TIG welding?

In our country, welding operations need to be licensed, welders are the type of work that belongs to the access category, in the professional qualifications of skilled personnel, only five of the 81 types of work in the access category, welders are one of them, and the actual situation is that most of the industry practitioners are unlicensed operations. With the continuous standardization of technology and the relevant requirements of the industry, more and more people want to take a welding certificate, the advantage of the certificate is still very large, first of all, the salary of the certificate and the non-certificate are very different, often able to reach more than double or higher level. Therefore, the issue of short-term welder training has naturally become a concern for practitioners.

Welding as an industrial "tailor" is a very important means of processing in industrial production, the quality of welding plays a decisive role in the quality of the product, so, what is the future development of welding technology?

Industry outlook. With the development of production, welding is widely used in aerospace, aviation, nuclear industry, shipbuilding, construction and machinery manufacturing and other industrial sectors, in China's economic development, welding technology is an indispensable means of processing. After entering the 21st century, welding is an important part of the manufacturing industry, and the rapid development, so it has brought unprecedented development opportunities to the welding industry.

At present, China consumes 300 million tons of steel every year (about tons of welded structure), and needs about 750,000 welding machines, and the welding industry will continue to grow in the next 8 10 years.

Mainly for the eyes, the arc light has a radioactive hazard to the body, as well as the lungs, the smoke from welding, I do this, although I know, but what can I do? Life is forced! Be protected.

You need to know that the smoke and dust generated in the welding process still stay in the strong electromagnetic field for a long time, which is harmful to the body, so it is very important to have regular special physical examinations!

Books on welding expertise or consultation with the doctor at the Occupational Disease Diagnosis Center can give you a satisfactory answer.

Argon was first used as an inflatable bulb for electric light bulbs, and later argon arc welding was made from this gas, which was used to cut metals. In heavy industry, TIG welding is widely used, but it is also very harmful to the human body.

1. Welder's pneumoconiosis. Pneumoconiosis refers to a disease caused by diffuse fibrosis of the lung tissue due to the long-term inhalation of dust exceeding the prescribed concentration. Welder's pneumoconiosis is a mixed pneumoconiosis caused by long-term inhalation of iron oxide-based and amorphous silica, silicate, manganese, iron, chromium, ozone, nitrogen oxides and other mixed smoke and toxic gases in tissues that exceed the allowable concentration.

According to relevant data, the shortest working age of welders' pneumoconiosis in China is 7 years, and the average working age is about 20 30 years, and there is a significant difference between the north and the south. In the north, due to the cold climate, the doors and windows of the workshop are often closed, and the poor natural ventilation conditions lead to a higher incidence rate in the north than in the south.

The main symptoms of welder's pneumoconiosis are: shortness of breath, cough, sputum production, chest tightness and chest pain. There are also some patients who present with general weakness, loss of appetite, weight loss, and neurasthenic syndrome (such as headache, dizziness, insomnia, drowsiness, dreaminess, memory loss, etc.), which also have a significant impact on lung function.

2. Manganese poisoning. Manganese vapor is oxidized into grey manganese oxide (MNO) and brownish-red manganese tetroxide (Mn3O4) soot in the air. If a welder inhales particles and vapors of manganese and its compounds in excess of the permissible concentration for a long time, it can cause violent poisoning.

Generally, the onset of manganese poisoning is relatively slow, and most of them gradually develop after 3 to 5 years of exposure, or even up to 20 years. In the early stages of manganese poisoning, headaches, dizziness, insomnia, memory loss, and autonomic dysfunction such as subtle tremors of the tongue, eyelids, and fingers may occur. If the poisoning progresses, the neuropsychiatric symptoms will be more obvious, and it will be difficult to get down, turn, and cross, and even when walking, there will be swaying from side to side or rushing forward and backward, and you will feel trembling when writing.

3. Welder metal heat. A syndrome in which metal heat inhales certain metal fumes in sufficient concentrations. Welder's metal heat refers to the absorption of copper oxide, zinc oxide, alumina, manganese oxide, iron oxide particles and fluoride in 0 0 0 0 5 pm in the welding metal fumes, which are easy to enter the peripheral bronchioles and alveoli through the upper respiratory tract, and then enter the blood, causing welder metal thermal reaction.

Metallic fever is an acute and occasional pathology, and its main symptoms are a metallic taste in the mouth after work, loss of appetite, nausea, chills, and mostly accompanied by low-grade fever. Welder metal heat is common among workers who weld copper and copper alloys, as well as those who often use alkaline electrodes in ship holds, closed containers.

There are six types of noble gases, which are arranged in order of increasing atomic weight, in order of helium, neon, argon, krypton, xenon, and radon. In general, these atoms are also indifferent to their own atoms, and do not even want to get close to each other to the extent that they can form liquids, they are only in the form of individual atoms, so at room temperature, they do not liquefy, but exist in the atmosphere in the form of gases.

Compared with the electrode arc welding, the degree of damage to the human body is higher, the current density of argon arc welding is large, the light emitted is relatively strong, and the ultraviolet radiation produced by its arc is about 5 30 times that of ordinary electrode arc welding, and the infrared ray is about 1 times that of electrode arc welding, and the ozone content produced during welding is higher.

Welder's pneumoconiosis and pulmonary function.

Arc welding, electrode welding cores, coatings and base metal arc melting, evaporation, oxidation, polymerization, produce a large number of metal oxides, soot and other substances, which can lead to long-term inhalation of welders' pneumoconiosis. Welder pneumoconiosis generally occurs in closed, poorly ventilated working conditions, with an average incidence of about 18 years in working age. Pulmonary function tests have shown that exposure to welding dust can cause a certain degree of lung function impairment in welders, and FVC,,,mmF, V50, V25, and PEFR lung function are significantly reduced [4]; Smoking factors, dust exposure factors, may have a synergistic effect on the lung function of welders; Welders with aggravated lung impairment prolonging the length of service in contact with dust.

Manganese poisoning. Various weldments and electrodes contain different amounts of manganese, and the manganese content of the general welding core is very low, only about to. In order to improve mechanical strength, wear resistance, corrosion resistance and other properties, the content of manganese in the electrode using manganese can be as high as 23.

Welding in the engine room, boiler or closed container, long-term inhalation of manganese dust in poorly ventilated places, manganese poisoning can occur, blood manganese can be detected, and manganese can be used as an early screening indicator for manganese poisoning by increasing the neurobehavioral changes of manganese in the urine.

Welding fumes fever.

Also known as welder heat welding fume fever, is a type of metal fume fever, a disease of metal fume fever due to the sudden inhalation of metal oxides, an increase in body temperature, increased white blood cell count, dizziness, fatigue, and chest tightness as the main manifestations, often 6 to 12 hours after contact with metal oxide fumes [8], from shortness of breath muscle and joint pain, fever, leukocytosis, severe chills, chills, and chills.

Effects on the nervous system.

Many studies have shown that occupational exposure to neurological impairment associated with welding work is inextricably linked to information processing functions such as memory, analysis, positioning, performance neurophysiology, neuropsychology, neurobehavioral abnormalities, manganese, aluminum, lead, and welding fumes. WHO's. The NCTB test showed a negative correlation between behavioral function and urine manganese, suggesting that changes in neurobehavioral function could serve as an early indicator of prevention of manganese poisoning.

Foreign studies of welder workers' behavioral function were reported, but increased, compared to the control group, and the authors analyzed the possible health effects of workers and the effects of work-related skills training due to. Parasympathetic investigation function in workers working with welding has also been reported [13]. It has been reported abroad that the early age of onset of Parkinson's disease (the average age of welders in the control group is 46 years old, and the average age is 63 years), which indicates that welding work is one of the risk factors for Parkinson's disease'S syndrome.

Injuries to the eyes and **.

Ultraviolet radiation (UVR) and infrared radiation (IFR) are an important aspect of eye and ** damage to welding work.

How harmful is TIG welding to the human body?

In addition to the same electric shock, burns, and fire as electrode arc welding, argon arc welding also has high-frequency electromagnetic fields, electric shock radioactivity, and arc light damage that is much stronger than that of arc welding. TIG welding is mainly used in the welding of aluminum and aluminum alloys, copper and copper alloys, magnesium and magnesium alloys, titanium and titanium alloys, high-temperature alloys, etc., and has a wide range of applications in many important industrial sectors.

Welding fume purification: 1. Natural ventilation.

2. Filter cartridge mobile welding fume purifier.

3. High negative pressure welding fume dust collector.

Natural ventilation has the lowest cost, and the main natural method is adopted, which reduces the concentration of welding fumes in the workshop by opening windows for ventilation and setting up blinds.

TIG welding operating procedures:

1. The argon arc welding must be operated by a special person.

2. Check whether the equipment and tools are in good condition before work.

3. Check whether the welding power supply, the control system has a grounding wire, and the transmission part is lubricated. The rotation should be normal, and the argon and water sources must be unblocked. If there is any water leakage, it should be repaired immediately.

4. Check whether the welding torch is normal and whether the ground wire is reliable.

5. Check whether the high-frequency arc striking system and welding system are normal, whether the wire and cable joints are reliable, and check whether the adjustment mechanism and wire feeding mechanism are in good condition for automatic wire argon arc welding.

6. Select the polarity according to the material of the workpiece, connect the welding circuit, use DC positive connection for general materials, and reverse connection or AC power supply for aluminum and aluminum alloy.

7. Check whether the welding groove is qualified, there shall be no oil stain and rust on the surface of the groove, and the oil and rust should be removed within 200mm on both sides of the weld.

8. Check the reliability of the fetal tool, and check the preheating equipment and temperature measuring instrument if the weldment needs to be preheated.

9. The argon arc welding operation button should not be far away from the arc, so that it can be closed at any time in the event of a failure.

10. When using high-frequency arc striking, it is necessary to check whether there is leakage.

11. If the equipment fails, the power should be cut off for maintenance, and the operator shall not repair it by himself.

12. It is not allowed to be naked and naked in other parts near the arc, and it is not allowed to smoke or eat near the arc, so as to avoid ozone and smoke inhalation into the body.

13. When grinding thorium tungsten electrode, you must wear masks and gloves, and abide by the operating procedures of the grinder. It is best to use cerium tungsten electrode (the radiation dose is smaller). The grinder must be equipped with an exhaust device.

14. Operators should wear electrostatic dust masks at all times. Minimize the time of high-frequency electrical action during operation. Continuous work shall not exceed 6 hours.

15. The argon arc welding work site must be well ventilated. Ventilation and detoxification equipment should be started during work. When the ventilation device fails, it should stop working.

16. Argon cylinders are not allowed to be smashed, and there must be a bracket for vertical placement, and they are more than 3 meters away from open flames.

17. When argon arc welding is carried out inside the container, a special mask should be worn to reduce the inhalation of harmful smoke. There should be a person outside the container to supervise and cooperate.

18. Thorium tungsten rods should be stored in a lead box to avoid injury due to the radioactive dose exceeding the safety regulations when a large number of thorium tungsten rods are concentrated together.

How harmful is TIG welding to the human body?