Adison Welding - A solution to your Welding Needs

Cellulose Coated Deep Penetration Electrodes For Pipe Welding

Mild Steel Electrodes

Mild Steel Iron Powder Types Electrodes

Low Hydrogen Electrodes

Cutting Electrodes

Hard Facing Electrodes

Stainless Steel Electrodes

Synthetic Hardfacing Stainless Steel Electrodes

Cast Iron Electrodes

Low Heat Input Welding Alloys

MIG / MAG Wires

SAW Wires

MIG / MAG Welding Systems

ARC Welding Transformers

Dc Welding Rectifiers

Welding Cables

CHECK-POINTS FOR QUALITY WELDING

Every welder has the responsibility of making each and every weld bead the best that he can possibly make. The future of welding and the future of the welder's security rest upon quality welding. Public confidence in welding has been built up through the satisfactory service of millions and millions of welds. Public confidence can quickly be destroyed by a catastrophe that could be caused by a defective weld. Adherence to the following rules will insure quality welds and the future of the welding industry as well as your own job security.

1.	Use only high quality welding machines, electrodes and welding accessories.
2.	Know the base material that you are working on.
3.	Select the proper welding process to give the highest quality welds on the material to be used.
4.	Select the proper welding procedure to meet the service requirement of the finished weldment.
5.	Select the correct electrode for the job in question. See additional information concerning the job.
6.	When preheating is specified or required make sure that the temperature requirements are met. In any case do not weld on material below 0°C without first preheating.
7.	Clean the base metal of all slag, paint, grease, oil, moisture and any other foreign materials.
8.	Remove weld slag and thoroughly clean each bead prior to making the next bead or pass.
9.	Do not weld over cracks or porous tack welds. Defective tack welds should be removed prior to welding.
10.	Be particularly alert to obtain root fusion on the first pass of fillet and groove welds.
11.	When root gaps of groove welds are excessive, build up one side of the joint prior to welding the pieces together.
12.	When the root gap is excessive in fillet welding, be sure to increase the size of the fillet weld the amount of the root gap in order to maintain the strength requirement. In some cases it is an advantage to make a groove weld in order to avoid extremely large fillets.
13.	Inspect your work and immediately remove any defective weld and replace it.
14.	Observe the size requirement for each weld and make sure that you meet or lightly exceed the specified size.
15.	Make sure that the finished appearance of the weld is smooth and that overlaps and undercuts have been properly repaired. Remember that many people judge the strength of a weld merely by its external appearance.

COST SAVING HINTS

Welding is the most economical method of joining metals. However, we should be on the lookout for ways to save time and materials to make welding the most advantageous. The following hints will help to lower welding costs.

MATERIAL Select an easily weldable material that will not require expensive electrodes or complicated welding procedures

JOINT DESIGN On heavier material material, double bevel and vee joints save considerable weld material. Of course it is necessary to be able to weld both sides.

ROLLED SECTIONS AND FORMING use bends and rolled angle channels, etc. to reduce the number of weld joints required.

DISTORTION CONTROL
Use wandering or back step sequence to reduce warp age and keep material in line to reduce the machining necessary.

PROPER FIT-UP Wide gaps between pieces to be welded waste weld metal. Fillets must be increased by the amount of gap to maintain strength.

FILLET WELD SIZE
Fillet weld size must be closely controlled. Doubling the size of fillet requires four times as much weld metal.

OVERWELDING AND REINFORCEMENT
Extra reinforcement and unequal legged fillets waste weld metal. The crown or reinforcement adds little to the strength of the weld..

POSITIONING. Position the job for flat welding if at all possible. This is the most efficient position. It allows use of large electrodes. It is easier and more comfortable for the welder.