Our experts are also able to advise you on the correct gas mixture, process and consumables for your application.
Welding and Brazing of Carbon Steel
The BOC Argoshield range of shielding gases is tailored for different material thicknesses and is perfectly suited for MIG welding carbon steel, delivering improved welding performance and lower operating cost than other types.
Various gas mixtures are suitable for MIG brazing, which is similar to MIG welding but uses aluminium or silicon bronze wire instead of a steel filler wire.
Unlike welding, MIG brazing doesn’t cause the parent metal to melt and the filler metal flows into the joint bonding the surfaces together, so it’s often used to fill the joint between two pressed steel surfaces or to join dissimilar materials.
Flame or Gas Brazing
This joining technique uses a number of fuel gas combinations to achieve fast joins without impairing quality.
Examples of its use in automotive and commercial vehicle manufacturing include brazing body-in-white chassis and fuel tanks. A flux is used to aid the capillary action, which can be applied either directly as a paste or through the flame as liquid suspension.
Welding of Stainless Steel
BOC’s Stainshield range is ideal for MIG welding stainless steel, including Ferritic and Austenitic types, as it contains small amounts of carbon dioxide that help stabilise the arc.
There is a choice of gases suitable for different applications.
TIG and Plasma Welding
This common process for welding stainless steels achieves quality welds with a good surface finish.
Although not all gas mixtures suit stainless steel types, there is a wide range of shielding gas mixtures to fit many purposes, from Specshield 5% H2 for welding thicker section joints to Pureshield Argon for exhaust systems.
MIG and TIG Welding Aluminium
It’s vital that the correct shielding gas is used when welding or brazing aluminium – a metal valued in automotive and commercial vehicle manufacturing for being lightweight.
Only inert gases such as pure argon, pure helium or a mix of the two, should be used for both MIG welding (ideal for high productivity) and TIG welding (best for high quality joints with excellent surface finish).
This established technology needs the correct welding gas to protect the focusing optics of the laser against fumes and spatter, so they last longer.
BOC’s helium, argon or mixtures of argon/helium, argon/oxygen and argon/CO2 are ideal when using CO2 lasers for laser welding of carbon steel.
Our range of gases for laser welding of stainless steel includes helium, argon/6-10% hydrogen and mixtures of the two for welding Austenitic steel and welding gases containing hydrogen for use on lower laser powers.
The most suitable gases for CO2 laser welding of aluminium are mixtures of helium and argon.
For details, download our pdf on Laser Welding.
The oxy-acetylene flame is outstanding for flame cutting, while there are various plasma gases to choose from, with nitrogen and argon sometimes used as secondary gases. Laser cutting requires the correct lasing gases and assist gas to work reliably and productively.