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Sunday, 14 September 2014

Types of Welds

Types of Welds Points : Types of Welds, Filler Weld, Groove Welds, Plug Welds and Slot Welds, Spot Welds and Seam Welds, Flange Welds and Surfacing Welds, All of preceding joints can prepare with welding. It is suitable to distinguish between joint type and the method in which it is welded-the weld type. Differences with weld types are in geometry (joint type) and welding process. Filler Weld Filler weld is use to fill in edges of plates formed through corner, lap, and tee joints. Filler metal is use to give a cross section about the shape of a right triangle. It is mainly familiar weld type in arc and oxy fuel welding as it need minimum edge preparation basic square edges of parts are use. Fillet welds can single or double explicitly welded on one side or both and can continuous or intermittent that is welded along the whole length of joint or by un-welded spaces along the length.
Groove Welds Groove welds generally need that edges of parts be shaped into a groove to make easy weld access. The grooved shapes contain square, bevel, V, U, and J, in single or double sides. Filler metal is use to fill in joint, generally with arc or oxy fuel welding. Preparation of part edges outside the basic square edge, while require extra processing is often done to enhance strength of welded joint or where thicker parts are to be welded. While most intimately connected by a butt joint, groove welds are use on every joint types except lap.
Plug Welds and Slot Welds Plug welds and slot welds are use for attach level plates, using one or extra holes or slots in top part and then filling by filler metal to fuse two parts jointly.
Spot Welds and Seam Welds Spot welds and seam welds, use for lap joints. A spot weld is a little fused section among surfaces of two sheets or plates. Multiple spot welds are usually necessary to join parts. It is most strictly coupled with resistance welding. Seam weld is like to a spot weld excluding it consists of a extra or less constantly fused section among the two sheets or plates.
Flange Welds and Surfacing Welds Flange weld is prepared on edges of two (or more) parts, generally sheet metal or thin plate, at least one of parts being flanged. A surfacing weld is not use to join parts, but slightly to deposit filler metal onto surface of a base part in one or more weld bead. Weld beads can make in a series of overlapping parallel passes, thus covering large areas of base part. The function is to increase thickness of plate or to give a protective coating on surface.

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