The only way to tig is to have your ground clamp hooked to the positive side of the welding machine. The negative lead will go to the tig torch. If it is reversed you will find out very quickly when you strike an arc. Most metals will be welded using this Polarity (straight). Most Aluminum TIG welding is performed using A C current.
Zinc
The most widely used mild steel grades are ASTM A36, EN S235JR, JIS SS400, DIN ST37-2, GB Q235B, etc. BBN steel 3w(.)bebonchina(.)com is world class steel materials supplier, the mild steel is one of our main products. If you are interested, please contact sales6(@)bebonchina(.)com.
Bright mild steel is an alloy. It is usually used to make hammer heads and shears, and it has a smooth, but tough surface.
Tensile yield strength in a steel bar is the amount of pressure exerted before the bar begins to bend. Tensile steel is used for a variety of construction projects.
CO2 is an oxygen compound or a non-inert gas,the purpose of a shielding gas is to shield the weld and the electrode from oxygen. argon, nitrogen and helium are the most common gases used for GTAW
A C, with high frequency superimposed, when welding Aluminum. D C straight polarity on almost everything else.
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duev to its ductility
mild steel.
Zinc
mild steel
Mild steel is harder than copper as it has a higher hardness level on the Mohs scale. Mild steel is commonly used in construction and manufacturing due to its durability and strength, while copper is known for its excellent electrical conductivity and malleability.
GTAW is commonly used to weld thin slections of stainless steel and non-ferrous metals luike aluminum, magnesium and copper alloys. The gas shield is never removed to prevent oxidation of its surface and contamination of the weld.
Because hard steel would be brittle and break.
During a tensile test of mild steel, the bar is tested until it breaks. It measures how much stress the mild steel can take before it finally breaks under the pressure.
both of these are same In some places they are used interchangeabl low carbon steel has 0.05-0.15% carbon mild carbon steel has0.16-0.29% carbon http://www.metalsupplies.com/