Groove —— An opening or channel in the surface of a part or between two components which provides space to contain a weld.
3.1 Weld joint terminology 焊接接头术语
【原文】1. Root opening---The separation between the members to be joined at the root of the joint.
【原文】2. Root face(land)---The unbeveled portion of the groove face.
【原文】3. Bevel---The beveled surface of a member included in the groove.
【原文】4.Bevel angle---The angle formed between the prepared edge and a plane perpendicular to the surface.
【原文】5.Groove angle---The total included angle of the groove between parts to be joined.
【原文】6.Counter bore---Boring of pipe inside diameter to correct for out of roundness resulting during manufacturing.
【原文】7.Groove radius---The radius used to form the shape of a J- or U-groove weld joint
【原文】8. Backing---A material placed at the root of the joint for the purpose of supporting molten weld metal (also called backing or backing strap).
3.2Types of welds 焊缝类型
【原文】There are numerous welds which can be applied to the various types of joints. Accessibility, type of welding process, and method of joint preparation determine the type of weld.
【原文】Figures2-4 and 2-5 show some of the typical configurations for single-welded and double-welded groove welds.