What is welding? What is the difference between ordinary welding

Release Time :

2022-10-27 13:28

1.Different working principles

Gas welding is a welding method that uses the flame generated by themixed combustion of combustible gas and combustion supporting gas asthe heat source to melt the weldment and welding material and realizeatomic bonding. Electric welding uses electric energy to pressurize,heat, or both, with or without filler material to achieve atomicbonding of weldments.

2.The basic operation process is different

Themain processes of gas welding include ignition, flame regulation and flameout, and stacking of flat welding waves.

The main processes of electric welding include arc striking, strip transportation and weld ending.

Welding methods are usually divided into fusion welding, pressure welding and brazing according to the different heating and pressure conditions during welding.

Fusion welding is to heat the metal at the joint of the weldment to the molten state during the welding process. The welding is generally completed without pressurization. In the welding process, the heat source quickly melts the metal at the welded joint and adds filler metal when necessary. The molten pool extends with the movement ofthe heat source and forms a weld after cooling.

According to different electric heating methods, it can be divided into electro slag welding, arc welding, laser welding and electron beam welding. Fusion welding is widely used in various welding methods,especially arc welding.

Pressure welding is a welding method that connects the joints of weldment sunder pressure (with or without heating). According to different pressure welding mechanisms, pressure welding can be divided intohigh-frequency welding, diffusion welding, resistance welding,friction welding, ultrasonic welding and so on. Among them,resistance welding is the most widely used.

Most pressure welding methods have no melting process, and there are no problems of combustion of beneficial alloy elements such as fusion welding and immersion of harmful elements in the weld. However, the welding conditions of pressure welding are harsh and the scope of application is narrow.

Brazing is a welding process in which materia ls with a melting point lower than the weldment are melted and adhered to the weldment, and the weldment joints are connected together after cooling. Generally, itcan be divided into gas welding and electric welding.

Gas welding, also known asburning welding, uses acetylene gas as the combustion source, mixeswith oxygen, and uses a welding gun to weld metal parts after ignition. Some unique metals are easily oxidized (such as aluminum) and need inert gas protection, such as argon welding.

What is welding? What is the difference between ordinary welding

The welding process used for submerged arc welded straight seam steel pipe is submerged arc welding technology, which adopts filler welding and particle protection flux submerged arc. The diameter of production can reach 1500mm. LSAW is the English abbreviation of submerged arc welded straight seam steel pipe. The production process of submerged arc welded straight seam steel pipe includes JCOE forming technology and coil forming submerged arc welding technology. When the diameter is large, two steel plates may be used for rolling, which will form the phenomenon of double welds.

2022-10-27

What is welding? What is the difference between ordinary welding

Reducing high-pressure boiler pipe eddy current testing misjudgment several key factors: (1) Coil eddy current testing and inspection center roller consistency in relation to the accuracy inspection rate high pressure boiler tube inspection system of the entire product, the coil center alignment requirements than the sample through holes circumferentially poor sensitivity ≤2dB, signal to noise ratio ≥ 8dB.

2022-10-27

What is welding? What is the difference between ordinary welding

Argon reduces the burning loss of alloy elements and obtains denseand high-quality welded joints; The protection can isolate the adverse effects of oxygen, nitrogen and hydrogen in the air on arcand molten pool.

2022-10-27

What is welding? What is the difference between ordinary welding

Submerged arc welding technology is ideal for important applications such as pipelines, pressure vessels and tanks, rail manufacturing and large buildings. There are the simplest form of monofilament, double-filament structure, tandem double-filament structure, and multi-filament structure.

2022-10-27

What is welding? What is the difference between ordinary welding

1.What is welding power supply? Weldingpower supply refers to the equipment with electrical characteristicssuitable for welding in the electric welding machine and provides theelectric energy required for welding, which is called welding powersupply.

2022-10-27

What is welding? What is the difference between ordinary welding

Shandong Xinghan Aluminum Industry Group Co., Ltd.

Tel : +8615562508601
Email : cnxh005@xhsteelgroup.com
WhatsApp：+8615562508601
Address : 15A11, Building J1, Hi tech Wanda Office Building, No. 57, Gongye South Road, Lixia District, Jinan, Shandong, China