What type of inert gas is used for the spray method of welding?
== == 95% Argon 5% CO2 is most commonly used for spray MIG.
Technically speaking, MIG welding is arc welding because it uses an intensely hot electrical arc to heat and join the metal together. Usually arc welding means stick welding. The difference between the processes is the manner in which the filler metal is applied. With MIG welding, the filler metal is usually applied with a wire fed through a gun type device with an inert gas such as argon shielding the weld. Arc (or stick) welding…
Arc welding is a type of welding using electricity to heat and fuse metal together. In order to control the process the heat must be controlled by varying the current. MIG (Metal Inert Gas) welding uses an inert cast to protect the weld from the air at extreme temperatures during the welding process. You can find a more detailed explanation of <a href=" http://www.trade-equip.co.uk/blog/?p=969 ">Arc Welding here</a>
Arc welding uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. They can use either direct (DC) or alternating (AC) current, and consumable or non-consumable electrodes. The welding region is sometimes protected by some type of inert or semi-inert gas, known as a shielding gas, and/or an evaporating filler material. The process of arc welding is widely used because…
2 basic types, Gas shielding, and flux shielding. Gas shielding comes from compressed tanks of inert gas such as argon. these gases are pumped through the welding hose and over the weld pool. The flux type protects the weld by covering it in a layer of slag that prevent it from being contaminated by the surrounding air.
MIG (Metal Inert Gas) and MAG (Metal Active Gas) welding requires an external shielding, since the electrode does not have a coating of its own. Higher carbon dioxide content increases the weld heat and energy when all other weld parameters (volts, current, electrode type and diameter) are held the same. Higher levels of CO2 allow deeper penetration of the weld as well.
Testors makes both spray and brush on paint for model cars, if you are too yound you may need to get an adult to purchase the spray type. The best results come from the spray method, but do not lay it on too heavy, it is better to use several light coats with an 800 grit wet sand in between coats to pruduce a realistic finish.