1, argon arc welding: more serious harm to the body, the technical requirements of the content, fatigue is higher,;
2, two bonded welding, handlebar welders;
3, special welders: gas welding,
4, resistance welders, spot welding;
5, underwater welding, pressure vessel welding< /p>
There are two main types of welding methods, namely, self-fusion welding and fusion wire welding two. The more common are 5 types of work. Commonly used welding methods (fusion welding; pressure welding and brazing).
2, manual electric arc welding, gas welding and gas cutting, argon arc welding, co2 gas shielded welding.
3, the type of welding rod selection and storage, the type and purpose of welding equipment, the form of welded joints.
4, the principle of formation of welded joints.
5, welding position (flat welding, vertical welding, horizontal welding, back welding) and welding process parameters (welding current, arc voltage, welding polarity, welding speed, etc.) selection, weld layout and weldment structure, gas welding process and cutting process, gas welding and gas cutting of commonly used metal materials, the principle of argon arc welding, the use of equipment and welding technology.
6, welding deformation and stress and generation and prevention methods.
7, common welding defects and preventive measures.
8, welding inspection.
9, electric and gas welding safety regulations.
10, understanding of cast iron, copper, aluminum, titanium and other metal welding characteristics and operation points.
Welder duties
1, welding operations on products arranged by the supervisor on a daily basis;
2, daily before and after the shift for the maintenance and repair of the machine, the site 5s organization;
3, follow the mcg process standards for operation; quality inspection of the input parts to ensure that the quality of the output assembly or sub-assembly; to the section chief of the defects in products Report;
4. Report equipment and tooling failures to the section manager; responsible for cleaning and lubricating fixtures and jigs to ensure proper storage on a daily basis.
Welding Skills Editorial Podcast
①Basic operation of manual arc welding (flat welding, vertical welding, horizontal welding) and operation of back welding and its essentials (with J507 alkaline electrode).
②Flat fillet welding and vertical fillet welding techniques.
③Welding methods of common metal materials.
④Proficiency in the basic operating techniques of gas welding and gas cutting.
⑤ Correct use of flame adjustment methods and the range of flame applications (carbonized flame, neutral flame, oxidizing flame).
6 master argon arc welding arc, wire feeding technology, specific operating points and parameter adjustment, argon arc welding application range.
Welder hazards
Welder's work will often make the overalls completely wet. Chronic manganese poisoning is mainly seen in the long-term inhalation of manganese fume workers, clinical manifestations of extrapyramidal neurological symptoms and neurobehavioral dysfunction and mental disorders. Those who have more exposure to manganese include manganese ore mining and smelting, manganese welding rod manufacturing, welding and wind cutting manganese alloys, as well as manufacturing and applying manganese dioxide, permanganate and other manganese compounds to industrial workers.
Radiation Hazards Often Exposed to Welders in Welding
Strong light, infrared rays, ultraviolet rays, and so on. X-rays from electron beams in welding can affect the health of welders.
Common accidents in the operation of welders
1, by the welding spark triggered by the combustion and explosion accidents.
2, burns and scalds caused by welding flames or candles.
3, welding process of electric shock and fall from height accidents.
4, welders in the operation will cause blood, eyes, skin, lungs and other lesions.
5, welding welders are often subjected to radiation hazards are bright light, infrared, ultraviolet and so on. X-rays produced by the electron beam in the welding will affect the health of the welder.
6, welding process, due to high temperature so that the metal welding parts, welding rod, dirt, paint, etc. evaporation or combustion, the formation of smoke-like vapor dust, causing poisoning.
7, welding in the high-frequency electromagnetic field will make people dizzy and tired.
The hazards of welding operations, is not inevitable. As long as each welder in the operation are strictly abide by the welding and cutting operation safety regulations, these hazards can be prevented. Junior welders, often get photophthalmitis. In the process of welding practice, but also often be iron burns.
Welder grade
Welder in accordance with their own welding skills, through the welding skills test can be achieved junior, intermediate, senior, technician, senior technician technical title and obtain the technical grade certificate issued by the state. Different titles can carry out welding operations are also different. And to carry out the boiler and other pressure vessel welding work is required to obtain a pressure vessel welding license.
Welder's license
Welder's license
PS: Welding is a skilled trade, such as a long time not engaged in welding work, you need to re-examine the technical grade certificate. Engaged in welding must hold a license to work, the license every three years a review. One person with a license to work. The main role of the induction card: the correct operation, safe production.