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There are three classes of metals based in stainless steel; Austenitic, martensitic and ferritic. Classification is based on their crystal structure. Stainless steel has a chromium content of at least ten percent. Austenitic grades are available with lowered carbon content. The basic steps below act as a guide in stainless steel welding.
Ensure Safety first. Take caution in protecting yourself and others. Fumes and gases affect health and electric shock kills. Read manufacturers instructions and provide articles on workers safety to your employees, protect your head from the fumes . Ensure ventilation and keep the exhaust at the arc, wear protective gears for the body, eyes and ears. Take caution not to touch live electrical wires.
Decide on which joint design you will use. This will ensures strength of welded steel. When connecting base metals, ensure strength, metal thickness, bonding position and how accessible the joints are. Joints are of five types; lap joint, edge joint, butt joint, cornet joint and t joint. They are arranged in different combinations to ensure a variety of welds. Make use of fixtures and jigs to secure pieces. When you are connecting, clamp metal sheet, joints and fillets when working.
Choose any of the following processes; Stick electrode welding process by which there is an electric arc between a base metal and metal electrode which generates heat that is needed in the bonding process. It is an inexpensive and efficient process due to slang coating and stub loss. Tig welding process is performed easily on various metals. The electric arc that generates heat is between the base metal and tungsten electrode. If necessary, a filler metal is added. The arc is shielded by an inert gas.
Welding of mig is faster on thin metal gauge and weighty plates. The process is provided with heat by the arc sandwiched by filler electrode and base metal. The gas doses the shielding. Mig welding come in two types; spray transfer and short circuit transfer. The short circuit is used in tiny gauges and produces shallow weld. The method of spray transfer continuously sprays metal droplets is undertaken to transfer the metal to the arc.
If your method of welding requires shielding, determine which gas to use. The Shield electrode does not require a shielding gas. For the tig process, shield with argon if the metal thickness is approximately half. Use argon helium mixture or just helium if the metal is thicker. Employ helium for deeper penetration. Two percent thiorated is used mostly. For mig welding, use between one percent and two percent argon or combined oxygen and argon. Mostly, one percent oxygen is used.
When the metal pieces are the same, make use of a filler metal that has the same composition with the base metals so that the weld will have uniform properties. Consider the mechanical characteristics, probability of cracking and compatibility when choosing filler metal with different applications of the base metal.
Use either direct or alternating current when using the stick electrode method. Direct current takes one direction of flow in the circuit. It either uses straight polarity or reverse polarity. Its advantage is that it can work even in settings with low current. Use direct current having a straight polarity in Tig bonding.
Ensure Safety first. Take caution in protecting yourself and others. Fumes and gases affect health and electric shock kills. Read manufacturers instructions and provide articles on workers safety to your employees, protect your head from the fumes . Ensure ventilation and keep the exhaust at the arc, wear protective gears for the body, eyes and ears. Take caution not to touch live electrical wires.
Decide on which joint design you will use. This will ensures strength of welded steel. When connecting base metals, ensure strength, metal thickness, bonding position and how accessible the joints are. Joints are of five types; lap joint, edge joint, butt joint, cornet joint and t joint. They are arranged in different combinations to ensure a variety of welds. Make use of fixtures and jigs to secure pieces. When you are connecting, clamp metal sheet, joints and fillets when working.
Choose any of the following processes; Stick electrode welding process by which there is an electric arc between a base metal and metal electrode which generates heat that is needed in the bonding process. It is an inexpensive and efficient process due to slang coating and stub loss. Tig welding process is performed easily on various metals. The electric arc that generates heat is between the base metal and tungsten electrode. If necessary, a filler metal is added. The arc is shielded by an inert gas.
Welding of mig is faster on thin metal gauge and weighty plates. The process is provided with heat by the arc sandwiched by filler electrode and base metal. The gas doses the shielding. Mig welding come in two types; spray transfer and short circuit transfer. The short circuit is used in tiny gauges and produces shallow weld. The method of spray transfer continuously sprays metal droplets is undertaken to transfer the metal to the arc.
If your method of welding requires shielding, determine which gas to use. The Shield electrode does not require a shielding gas. For the tig process, shield with argon if the metal thickness is approximately half. Use argon helium mixture or just helium if the metal is thicker. Employ helium for deeper penetration. Two percent thiorated is used mostly. For mig welding, use between one percent and two percent argon or combined oxygen and argon. Mostly, one percent oxygen is used.
When the metal pieces are the same, make use of a filler metal that has the same composition with the base metals so that the weld will have uniform properties. Consider the mechanical characteristics, probability of cracking and compatibility when choosing filler metal with different applications of the base metal.
Use either direct or alternating current when using the stick electrode method. Direct current takes one direction of flow in the circuit. It either uses straight polarity or reverse polarity. Its advantage is that it can work even in settings with low current. Use direct current having a straight polarity in Tig bonding.
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