Austenitic stainless steel is an important category of stainless steel prickets, because of its good heat resistance, corrosion resistance, low temperature resistance and Good processing and bonding properties are widely used in various fields, and its output accounts for about 70% of the total stainless steel.
Austenite is a gap solid solution formed by C dissolved in γ iron, with a face-centered cubic structure and non-magnetic; Austenitic stainless steels are stainless steels that are mainly strengthened by cold work processing (and produce magnetic) induced martensite.
Hydrogen diffusing to metal becomes air Impurities, which endanger almost all metal, result in cracks and flaws.
Control the volume of diffusible hydrogen when welding is a must-consider point.
Cracks are one of the most dangerous defects in the performance of the structure of the rust joint, and any form of crack is prohibited in the cracks. Cracking is a crack in the joint of materials caused by the combined effect of the joint force of the substrate and other brittle factors, forming a gap in the new territories interface. According to the production conditions of the crack, it can be divided into thermal crack, cold crack, reheat thermal crack, layered tear and stress corrosion crack. Following we introduce the most common crack form - thermal crack.
EO/EG are key material for petrochemical for antifreeze, coolant, fiber, and plastic. Also for Nonionic surfactant, Glycol ether, Ethanolamine, Anti-corrosion coating, and other chemical product. EO and EG are the third Ethylene derivatives beyond polyethylene and Polyvinyl Chloride.
Weathering Steel is advantageous to the atmospheric corrosion. It contains a small amount of Cr, Ni, Cu, and P elements to form up a protective layer on the surface for slowing down the corrosion.
It is in a range of 2~8 times capable of the atmospheric corrosion to the general carbon steel. It is mainly using for vehicle, bridge, containerizing, construction, and gantry(crane) for lifespan longer.
Wind power is a clean source that has rapidly developed in recent years. The steel plates are being used thicker even over 100mm and required higher welding skills according to the developing progression. Q355 or DH36 is more use in wind power equipment, and the welding consumables selected in FCAW and SAW.
The development of metal-type flux-cored welding wire began in the mid-20th century. It is a product similar to "slag-type" flux-cored welding wire. Its welding flux is mainly metal powder, and a small amount of deoxidizer and arc stabilizer are added. After welding, just like solid welding wire, it will only form intermittent island-shaped oxide film on the welding bead.
Welding gas shield includes CO2, Argon, Helium, O2, and mixed gas. It protects the melting process and keeps outer air away into the weld while welding, that of being a media to cause different arc characteristics.Gas characteristics, not only affects the protective effects but also affects the arc status and the melting characteristics in the process.
Stainless steel flux cored wire is widely adopted at many fields such as petrochemical, pressure vessel, ship building, and machinery industries. This is mainly because of its superior weldability, stable mechanical performance, and high productivities.There are cracks discovered after weld at the high working temp. 700℃ or higher on conventional austenite stainless steel joints.It is because of conventional stainless steel flux cored wire contains a minute of Bismuth oxide, so Sorex develops Bi-free type wire to improve it.
Carbon content more than 2.1% iron-carbon alloy, which contains rich in the world, low cost, castability, machinability and seismic performance are the reasons, characteristics for cast iron steel widely adopted and applied to different industrial fields. It is divided into grey cast iron and white cast iron. There are Nodular cast iron and vermicular cast iron of grey cast iron.
Member of the self-shield flux cored wires.Adding slag-forming agent, deoxidizer and denitrification agent with an appropriate melting point, which can be directly welded without shielding gas, and good welding characteristics can be obtained.The designs of cored flux utilize the principle of slagging and gas production of metallurgical reaction to demonstrate the joint protection of gas slag in the molten pool.It delivers efficiency 3~5 times of regular manual welding.
A matrix of 50:50 microstructure of austenite with ferrite. 30% ferrite is minimum and balance of austenite as basic organization. The duplex alloy delivers high strength, ductility, resistance to chloride induced stress corrosion cracking, pitting attack in chloride environments with superior weldability.
In recent advance and industrial applications on Offshore Construction, Nuclear Power and Chemical Facilities has corrosion and heat resistance requirement. Therefore, NiCrMo-3 had been provided in most applications. Such as low temperature High-Alloyed steel, Heat-Resistant steel, 9% Ni and also suitable for joint metals of the type mentioned above.
