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How much prices for welding pipe per dia inch?
It greatly depends on material cost and the labour cost. In middle east region, it is around USD 10 / Inch dia for CS welding
What is h(-3)?
H-O-H is the symbol formula of WATER. H2O
What is 250 MCM?
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
What effect can trailing zeros in the dimension text have on the cost of a part?
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.
What makes a hexagon a parallelogram?
That's like asking "What makes a Chevy a Ford ?". A Hexagon has six sides. None of them have to be equal or parallel. A parallelogram has four sides. Two of them are equal and parallel, and the other two are also equal and parallel. To take a hexagon and make it a parallelogram, you have to do some serious cutting and welding.
When welding with 7018 rod is the electrode holder positive and the ground negative?
Yes, the electrode holder (stinger) is positive and the ground is negative which means you would be welding DC positive.
What type of welding machine does not have positive and negative terminal?
Transformer type welding machine
When welding with DCEN the electrode is positive and the work is negative?
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.
What type of welding machine does not have positive and negative terminal connection?
Transformer type welding machine
What polarity is used for stick welding?
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 old welding machines used electromagnetic winding to step up the current for welding rods. What is the new principle inside the welding machines?
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.
What is meant by the term welding and draw various welding symbols?
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.
What are the three types of machines used in manual metal arc welding?
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.
How does welding transform work?
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.
What type of welding machine use in spot welding or resistance welding?
Mainly In spot welding & resistance welding two type welding machines are used :- 1. Air Cooled & 2. water Cooled.
Which company makes the best welding machine?
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.
What is a general formula for welding output current and voltage relationship for MMA welding machines?
V= 0.05 i + 10 for mmaw welding v= 0.05 i + 20 for tig welding
