INTRODUCTION Originally Inert Gas Tungsten Arc Welding (Tungsten Inert Gas) is a type of arc welding made the atmosphere control. Tungsten electrodes were used. Electrodes only to produce an arc only. So, for the weld when the metal Additional required to weld, trunk filler rod should be fed to the weld area as methods done in oxy-gas welding process asetilina. During the welding process is a shield in the form of gas inert (argon & helium) is used to block the welded from atmospheric air. Shield works for prevent oxidation at the electrode tip, a puddle weld and the parent metal in the vicinity of the welded. There are two types of commonly used welding nozzle weld TIG operation manually. For welding use per current is low (less than 200 amperes) when welding thin material, weld nozzles are usually of the type that can cooled in air conditioning. But, for welding require more current than 200 amperes, the nozzle weld should be cooled with water so that the electrodes do not become overheated.
TEORY In TIG welding, electric arc occurs when electricity is passed to the tungsten electrode. The distance between the tip of the tungsten electrode and the workpiece surface will cause a flow of electrons. The flow of electrons in turn produce arc and high heat to melt metal.
TIG welding is done in a controlled atmosphere using a tungsten electrode which serves to produce an arc to melt the metal. Direct current or alternating current of high frequency is used to enable the resulting continuous and stable arc without touching the metal electrodes. The arc is ignited by pressing the starter switch is located on the blowpipe flame. Filler rod to feed and deposited into the cauldron of molten metal as an additive. During extended inert gas welding gas cylinder through the blowpipe from functioning as a shield to protect the molten crater of atmospheric air trapped in it.
OBJECTIVE
There are several purposes for doing this report. Among them:
To gain experience and knowledge of the use of TIG arc welding and materials safe.
To discipline students using workshop should.
To provide exposure to the students about security is important.
Ensure that the students that they know how to use TIG machine and hand tools in the right way
Improve the students during their patience do work piece.
Able to help students in the job environment requires skill.
SAFETY DURING WORK Some of the measures that need to be done while in welding workshop are:
Well-dressed, neat and safe.
Wear goggles when welding. Goggles protect the eyes when students operate TIG welding.
Do not look at welding with the naked eye as strong arc light can cause eye pain, glare and juicy.
Put the lid onto the shirt before use TIG welding.
When wearing an apron workshop, always tie back not in front.
Remove watches, rings and bracelets as they can endanger yourself while using welding conditions and cause injury.
Turn off welding before cleaning.
Always ensure TIG welding and hand tools are clean.
Make sure the floor is not greasy so as to avoid injuries from occurring.
For the boys, they should ensure their hair short and neat.
Before getting into the workshop the students must clad mechanical workshop.
Students who use TIG welding or equipment without the permission of the lecturer will be disciplinary action.
In the event of any injury to the student, please report it immediately to a lecturer in action further.
SAFETY EQUIPMENT
FUNTION
GOOGLE Protective devices to protect your face and eyes from arc light.
GLOVE Protective equipment to protect the hand than the high temperature working material.
APRON to prevent sparks hit in shirt
APPARATUS
Machine tig
Tungsten eletcrod
FUNCTION
Welding machine uses an alternating current entry (AU) and produces direct current (DC).
used for drainage flow
Enhancer rod
APPARATUS
Rod additive used to strengthen the connection with the molten welding rod into a cauldron of molten enhancer.
FUNCTION
Regulator and Flow Meters
There are three main parts of the regulator, cylinder pressure gauges and flow meters: Flowmeter gas measure serves as a gauge for the working pressure required. There are readings on the outside while the inside of the glass tube there is a ball float that will be used to mementukan pressure level of work required. Meter readings will be taken at the center of the ball ata at the top of the ball.
HOS
Hose is used to transport the gas from the cylinder to blowpipe. Hos is also used to drain water conditioning to blowpipe
PROCEDURE
1) clean the workpiece to be in welding 2) using iron as the base of the workpiece 3) connect the earth line on iron material so that current can be discharged 4) set and adjust the appropriate protective gas and adjust the end point tungsten 5) upon completion of the current set on the machine ac / dc, take place at the base of the workpiece metal 6) Next put the two workpieces to locate the ends of the material and do weld the nail on the connection of the workpiece 7) Perform TIG weld to weld finish filling the space with the use of the rod. 8) Switch TIG weld and cover gas pressure when finished welding the steel connections and cool the workpiece. 9) Clean the slag on the workpiece by using an air purifier to get results updates
CONCLUSION
From the results of this assignment I have learned many things during this project, especially in dealing with TIG machine. This is because there are several steps that must be followed before conducting proper welding TIG is. For example, adjust the gas pressure which is suitable for welding workpiece. I also use TIG welding as well although not mahir. I’m
