A weld symbol is the shape drawn on a Print to tell the welder: how to prepare a welding joint, what process can be used to weld (mig, tig, arc, etc) what filler rod to use, how wide and long the weld should be, how to deal with the weld after your done (grind flush, brush clean, or nothing) and a million other things....
Its a tool that design engineers use to communicate what the weld needs to be to meet their design specifications.
circumfrencial weld is sometimes referred to as Girth weld. its just another term.
Yes, you can weld steel to steel. You can use steel welding rod.
why is it important only to strike the arc in the weld joint
A fillet weld in any single continuous weldmay underrun the nominal fillet weld size specified by2 mm [1/16 in] without correction, provided that theundersize portion of the weld does not exceed 10% of thelength of the weld. On the web-to-flange welds on girders,underrun shall be prohibited at the ends for a lengthequal to twice the width of the flange.
Without knowing exactly which Code or industry this applies to, I'll give it a shot using AWS D1.1 standards. The standard flare-groove detail is P10 indicating that it is a PJP (partial joint penetration) weld. If a weld size is not indicated, it is assumed it is a full thickness weld and I believe this is where the confusion comes in. It's a partial penetration with full thickness and that's where the argument starts. This weld could be used as a full penetration weld (and held to that testing criteria) but the detailer must be specific about the intentions, particularly if it is used in a critical joint.
A weld symbol is a representation of a cross section of a given weld. A welding symbol is a composite containing a weld symbol, reference line, and arrow. Additional information can be included in supplementary symbols, and dimensions.
When a flanged corner joint is specified, the other side of the edge weld symbol is often a groove weld symbol. This indicates that a groove weld is required on the opposite side of the joint to ensure proper joint strength and integrity. The combination of both weld types helps to achieve a robust connection in the assembly.
To find the root opening on a groove weld symbol one must measure the depth of filling for plug & slot weld. Rhianna Berriman
To find the root opening on a groove weld symbol one must measure the depth of filling for plug & slot weld. Rhianna Berriman
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.
When the depth of filling is less than the thickness (less than complete), it is specified inside the plug weld symbol!!!
A TCU4a weld is a Corner Jount (TC), Unlimited Thickness Full Joint Penetration (U), Single Bevel Groove (4), and (a) is the welding process.
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.
Depends on what you are welding, but generaly welds can meet, or even weld on top of a weld.
Theodore Weld
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