Welding Terms part 1

Posted: December 13, 2006 By: CARS

Home Forums Welding Welding Archives Welding Terms part 1

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    CARS

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    Here are some welding terms I “borrowed” from a web site. If anyone wants to discuss a difference in opinion on these terms please state the # infront of the definition. There are close to 200 terms so don’t try to memorize them all 😀

    ID Term Definitions
    1 arc seam weld a seam weld made by an arc welding process

    2 arc spot weld a spot weld made by an arc welding process

    3 arc strike any inadvertent discontinuity resulting from an arc, consisting of any localized re-melted metal, heat-affected metal, or change in the surface profile of any metal object. The arc may be caused by arc welding electrodes, magnetic inspection prods, or frayed electrical cable.

    4 arc welding a group of welding processes wherein coalescence is produced by heating with an arc or arcs, with or without the application of pressure, and with or without the use of filler metal

    5 as brazed adj. pertaining to the condition of brazements after brazing, prior to any subsequent thermal, mechanical, or chemical treatments

    6 as welded adj. pertaining to the condition of weld metal, welded joints, and weldments after welding but prior to any subsequent thermal, mechanical, or chemical treatments

    7 backgouging the removal of weld metal and base metal from the weld root side of a welded joint to facilitate complete fusion and complete joint penetration upon subsequent welding from that side

    8 backhand welding a welding technique in which the welding torch or gun is directed opposite to the progress of welding

    9 backing a material placed at the root of a weld joint for the purpose of supporting molten weld metal so as to facilitate complete joint penetration. The material may or may not fuse into the joint. See retainer.

    10 backing gas a gas, such as argon, helium, nitrogen, or reactive gas, which is employed to exclude oxygen from the root side (opposite from the welding side) of weld joints

    11 base metal the metal or alloy that is welded, brazed, or cut

    12 bond line (brazing and thermal spraying) the cross section of the interface between a braze or thermal spray deposit and the substrate

    13 braze a joint produced by heating an assembly to suitable temperatures and by using a filler metal having a liquidus above 840°F and below the solidus of the base materials. The filler metal is distributed between the closely fitted surfaces of the joint by capillary action.

    14 brazer one who performs a manual or semiautomatic brazing operation

    15 brazing a group of metal joining processes which produces coalescence of materials by heating them to a suitable temperature, and by using a filler metal having a liquidus above 840°F and below the solidus of the base materials. The filler metal is distributed between the closely fitted surfaces of the joint by capillary action.

    16 brazing, automatic brazing with equipment which performs the brazing operation without constant observation and adjustment by a brazing operator. The equipment may or may not perform the loading and unloading of the work.

    17 brazing, block (BB) a brazing process that uses heat from heated blocks applied to the joint. This is an obsolete or seldom used process.

    18 brazing, dip (DB) a brazing process in which the heat required is furnished by a molten chemical or metal bath. When a molten chemical bath is used, the bath may act as a flux; when a molten metal bath is used, the bath provides the filler metal.

    19 brazing, furnace (FB) a brazing process in which the work pieces are placed in a furnace and heated to the brazing temperature

    20 brazing, induction (IB) a brazing process that uses heat from the resistance of the work pieces to induced electric current

    21 brazing, machine brazing with equipment which performs the brazing operation under the constant observation and control of a brazing operator. The equipment may or may not perform the loading and unloading of the work.

    22 brazing, manual a brazing operation performed and controlled completely by hand. See automatic brazing and machine brazing.

    23 brazing, resistance (RB) a brazing process that uses heat from the resistance to electric current flow in a circuit of which the work pieces are a part

    24 brazing, semiautomatic brazing with equipment which controls only the brazing filler metal feed. The advance of the brazing is manually controlled.

    25 brazing, torch (TB) a brazing process that uses heat from a fuel gas flame

    26 brazing operator one who operates machine or automatic brazing equipment

    27 brazing temperature the temperature to which the base metal(s) is heated to enable the filler metal to wet the base metal(s) and form a brazed joint

    28 brazing temperature range the temperature range within which brazing can be conducted

    29 build up of base metal/restoration of base metal thickness this is the application of a weld material to a base metal so as to restore the design thickness and/ or structural integrity. This build-up may be with a chemistry different from the base metal chemistry which has been qualified via a standard butt-welded test coupon. Also, may be called base metal repair or buildup.

    30 butt joint a joint between two members aligned approximately in the same plane

    31 buttering the addition of material, by welding, on one or both faces of a joint, prior to the preparation of the joint for final welding, for the purpose of providing a suitable transition weld deposit for the subsequent completion of the joint

    32 clad brazing sheet a metal sheet on which one or both sides are clad with brazing filler metal

    33 coalescence the growing together or growth into one body of the materials being joined

    34 complete fusion fusion which has occurred over the entire base material surfaces intended for welding, and between all layers and beads

    35 composite a material consisting of two or more discrete materials with each material retaining its physical identity

    36 consumable insert filler metal that is placed at the joint root before welding, and is intended to be completely fused into the root to become part of the weld

    37 contact tube a device which transfers current to a continuous electrode

    38 corner joint a joint between two members located approximately at right angles to each other in the form of an L

    39 coupon see test coupon

    40 crack a fracture-type discontinuity characterized by a sharp tip and high ratio of length and width to opening displacement

    41 defect a discontinuity or discontinuities that by nature or accumulated effect (for example, total crack length) render a part or product unable to meet minimum applicable acceptance standards or specifications. This term designates rejectability. See also discontinuity and flaw.

    42 direct current electrode negative (DCEN) the arrangement of direct current arc welding leads in which the electrode is the negative pole and the work piece is the positive pole of the welding arc direct current electrode positive (DCEP) –

    43 discontinuity an interruption of the typical structure of a material, such as a lack of homogeneity in its mechanical, metallurgical, or physical characteristics. A discontinuity is not necessarily a defect. See also defect and flaw.

    44 double welded joint a joint that is welded from both sides

    45 double welded lap joint a lap joint in which the overlapped edges of the members to be joined are welded along the edges of both members

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