Double Seam Joint In Sheet Metal

Some seams are created entirely by machine or in a metal shop while others are made to snap together without requiring welding or soldering on site.

Double seam joint in sheet metal.

Hemming is the process in which the edge is rolled flush to itself while a seam joins the edges of two materials. The extra material allowance for a grooved seam is 3 times the width w of the seam one half of this amount being added to each edge note. Multiply 1 8 by 2 1 2 and your answer will be 5 16 inch which you will allow when laying out sheet metal for making the wire edge. Grooved seam are a type of self locking joint used commonly in the fabrication of cylindrical and conical objects.

A variety of seams are used to connect pieces of sheet metal in construction auto body creation and fine art sculpture. Hemming and seaming are two similar metalworking processes in which a sheet metal edge is rolled over onto itself. Hems are commonly used to reinforce an edge hide burrs and rough edges and improve appearance. 2 57 is one of the most widely used methods for joining light and medium gauge sheet metal.

The grooved seam joint fig. The seam can be on the outside or on the inside. Up to 4 times the material thickness may also need to be added for thicker.