The cost of welding pipe per diameter inch can vary depending on several factors, including the type of metal being welded, the welding process used, and the complexity of the project. Generally, welding prices are calculated based on the length of welds required, material costs, labor costs, and overhead expenses. It is recommended to obtain quotes from multiple welding professionals or companies to compare prices and ensure you are getting a fair estimate for your specific project.
H-O-H is the symbol formula of WATER. H2O
In electrical wiring awg ( American wire gauge) goes to 4/0 as the largest size. then it goes to 250 mcn. MCN which stands for 1,000 Circular Mils. this system uses the cross sectional area of the wire as a measurement. typical mcm wire sizes start at 250 and go to 300,350,400,500,600, etc. 250 mcm is usually good for a 200 amp service in aluminum wire in Canada per code. American standards are not as high or as good as Canadian ones. 250 MCM Welding cable is the next size larger than the standard 4/0 cables used on most standard mag particle inspection machines. Increasing the cable size will reduce the heating effect on the cables and increase the available current. welding cables is one of the more common uses for bigger sized wires. 250 MCM Cable has a cross-sectional area of .199 square inches
FP on a weld symbol stands for "Fillet weld all around." This means that a fillet weld is required to be made on all sides of the joint where the symbol is placed. The weld size, length, and other specifications should be indicated next to or below the FP symbol on the welding symbol to provide further guidance to the welder. It is important to follow the welding symbol precisely to ensure the weld meets the required specifications and standards.
Additive processes add stuff to the original piece. Think welding or adhesive bonding. Subtractive would be maybe a machining process that takes material away. Trailing zeros mean greater tolerance is required and that comes at a higher price.
Yes, the electrode holder (stinger) is positive and the ground is negative which means you would be welding DC positive.
Transformer type welding machine
DCEN means Direct Current Electrode Negative. Hook the welding cable to the Positive connection (+) on the machine, the ground cable to the Negative connection (-) Electricity travels from Negative pole to Positive pole.
Transformer type welding machine
Reverse. Using a D C machine, electricity travels from the negative post to the positive post. Connecting the electrode holder to the positive post and the ground clamp to the negative post means the current flows from the work to the electrode - reverse polarity. In A C machines it doesn't matter which post the electrode holder is connected to.
The new principal inside welding machines is based on metal-arc welding, whereas the older welding machines used electromagnetic winding to increase the current in welding rods.
Welding is the process of joining two metals, usually involving a heat source. Welding symbols are the symbols used on part prints or assembly drawings to show size and type of weld, the specific welding process, and many other variables pertaining to that particular weld. A welding symbol looks like an arrow pointing to the location of the weld, with a horizontal line 'carrying' other symbols and numbers that describe how to make that weld. A picture of a welding symbol can be found when an image search is done.
I am not sure your question is clear enough but here I go... Stick Arc Welding (AC or DC), MIG (Metal Inert Gas) and TIG (Tunsten Inter Gas). All three of these are the basic metal welding machines.
The welding transformer - converts 'standard' mains electricity to high-amp power. The negative lead is attached to the piece of work, and the positive to the welding 'gun'. Touching the welding electrode (from the gun) - completes an electrical circuit - making an 'arc' with enough power to melt the metals together.
Mainly In spot welding & resistance welding two type welding machines are used :- 1. Air Cooled & 2. water Cooled.
Who makes the best welding machines is quite subjective. Some of the best machines are said to be made by Lincoln Electric while others prefer Miller Electric machines.
V= 0.05 i + 10 for mmaw welding v= 0.05 i + 20 for tig welding