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Video: Automatic butt-welding machine. Butt welding is when two pieces of metal are placed end-to-end without overlap and then welded along the joint (as opposed to lap joint weld, where one piece of metal is laid on top of the other, or plug welding, where one piece of metal is inserted into the other).
Aluminium alloys are often used due to their high strength-to-weight ratio, corrosion resistance, low cost, high thermal and electrical conductivity.There are a variety of techniques to join aluminium including mechanical fasteners, welding, adhesive bonding, brazing, soldering and friction stir welding (FSW), etc. Various techniques are used based on the cost and strength required for the joint.
The joining technology is used in any type of mechanical joint which is the arrangement formed by two or more elements: typically, two physical parts and a joining element. The mechanical joining systems make possible to form a set of several pieces using the individual parts and the corresponding joining elements.
This hole is stopped 1 ⁄ 4 in (6.4 mm) or so from the edge of the frame member. The second step is to drill a pilot hole concentric with the pocket hole which extends through the edge of the member. The pilot hole allows the screw to pass through the member and into the adjoining member.
Holes are drilled in nuts and bolt heads, and wire is threaded through the holes to prevent back-rotation. This method of locking is labor intensive, but is still used on critical joints. [1] Locknuts Some portion of the nut deforms elastically during tightening to provide a locking action. Spring washers and lock washers
A splice joint is a method of joining two members end to end in woodworking. [1] The splice joint is used when the material being joined is not available in the length required. It is an alternative to other joints such as the butt joint and the scarf joint. Splice joints are stronger than unreinenforced butt joints and have the potential to be ...
The ends get caught in between the two ropes and these two hitches, at the elliptical eye in the middle of the knot. There are two other variants to this bend: a double harness bend with ends pointing in opposite directions, and a double harness bend with parallel ends i.e. with ends pointing in the same direction. The starting side of one of ...
Chain splice – Attached the working end of a rope to a chain. [7] Figure-eight "splice" knot – A splice-like bend knot used for joining two ropes. Horseshoe splice – A cut splice where the two sides of the loop are of unequal length. Long splice – A splice used to join two rope ends forming one rope the length of the total of the two ropes.