Presentation on theme: "Manufacturing Processes Lab I Joint Design & Welding Terms"— Presentation transcript:
1Manufacturing Processes Lab I Joint Design & Welding Terms
2Welding terminologyAn electrode is a component that conducts electrical current to the weld area.Some electrodes are covered with a flux coating.The base metal is the metal or alloy that is to be welded.Constant molten pool width meansconstant bead widthMaintain steady arc lengthA weld bead is a weld that results from a weld pass.A weld pass is a single progression of welding along a weld joint.Single pass & multiple-pass weld
3Welding terminologyA filler metal is metal deposited during the welding processes.A ripple is the shape within the deposited bead caused by the movement of the welding heat source.
4Welding terminologyA crater is a depression in the base metal that is made by the welding heat source (at the termination of the weld bead).Joint Penetration is the depth of the weld metal from the weld face into the joint (it does not include the weld reinforcement measurement!).
5Welding terminologyWeld reinforcement is the amount of weld metal in excess of that required to fill the joint. (= face reinforcement)Root reinforcement is reinforcement on the opposite side (opposite the one which welding took place).
6Welding terminologyThe root face is the portion of the groove face within the joint root.The root opening is the distance between joint members at the root of the weld before welding (this should be accurate!).Weld width is the distance from toe to toe across the face of the weld.
7Welding terminologyThe weld toe is the point where the weld metal meets the intersection of the base metal and the weld face.The weld face is the exposed surface of the weld (bounded by the weld toes on the side on which welding was done). The face may be either convex or concave.The weld root is the area where filler metal intersects the base metal and extends the furthest into the weld joint.
8Welding terminologyA joint root is the portion of a weld joint where joint members are the closest to each other (may be either a point, line or an area).The actual throat is the shortest distance from the face of a fillet weld to the weld root after welding.The effective throat is the minimum distance, minus convexity, between the weld face and the weld root.A weld leg is the distance from the joint root to the weld toe. (size of a fillet weld in lap or T-joints).
9Weld jointsA weld joint is the physical configuration at the juncture of the workpieces to be welded.Basic considerations in the selection of any weld joint.