Sheetmetal Joints Joints can be Self Secured Or

Sheetmetal Joints

Joints can be…………. Self Secured Or!!!!! Non Self Secured

Definition of a Self – Secured Joint? A joint that requires no mechanical fixings such as……. Bolts Rivets Screws or Clamping devices. Or …………… A joint that requires no thermal joining methods such as…… Soldering Brazing or Welding Or …………… A joint that requires no Non-Thermal Bonding Methods such as………. Acrylic, cellulose, polyamide based and cyanoacrylate based (superglues)

Types of Self - Secured Grooved Seam Or …………… Panned Down Or …………… Knocked Up

Grooved Seam Joint • The Grooved Seam Joint is a SELFSECURED JOINT • Once finally formed (using the correct sized grooving tool) the joint should not come apart! • If the joint needs to be gas or water tight then it will be necessary to solder or use a non thermal bonding method (please note this not required to hold the joint together). Seam is completed by use of grooving swage

Panned Down Joint Construction • Formed by one section folded at 90º. • The second section Is folded 180º. • The sections are fitted together (Shown opposite) and the sections are dressed together using a panning hammer. Applications. • Used to join sides of cylinders , square and rectangular shapes at 90º to each other.

Knocked Up Joint • This is much stronger and more secure joint than the panned down joint. • This is because there is one more folding stage than the panned down joint. • This joint has the same applications as the panned down joint

Non-Self Secured Joint Types Can Be…. ØLap ØCorner ØButt ØTee ØFlange Butt ØLock Seam

Lap Joint (Non Self-Secured) Lap Joints can be secured by using: - 1. Mechanical Methods such as…. . Riveting Bolting Screwing or clamp devices etc. 2. Thermal Methods such as…… Soldering Brazing or Welding • Non-Thermal Bonding Methods such as………. Acrylic, cellulose, polyamide based and cyanoacrylate based (superglues) Other methods are: neoprene: use of contact (impact) adhesives Or one and two component epoxy based resins

Corner Joint (Non Self-Secured) There are various ways to form a non self secured corner joint and two examples are shown opposite. Corner Joints can also be secured by using: - 1. Mechanical Methods such as…. . Riveting Bolting Screwing or clamp devices etc. 2. Thermal Methods such as…… Soldering Brazing or Welding 3. Non-Thermal Bonding Methods such as………. Acrylic, cellulose, polyamide based and cyanoacrylate based (superglues) Other methods are: neoprene: use of contact (impact) adhesives Or one and two component epoxy based resins Or……

Tee Joint (Non Self-Secured) Again Tee Joints can be secured by using: - 1. Mechanical Methods such as…. . Riveting Bolting Screwing or clamp devices etc. 2. Thermal Methods such as…… Soldering Brazing or Welding 3. Non-Thermal Bonding Methods such as………. Acrylic, cellulose, polyamide based and cyanoacrylate based (superglues) Other methods are: neoprene: use of contact (impact) adhesives Or one and two component epoxy based resins

Flanged Butt (Non Self-Secured) Flanged Joints are be secured by using: - 1. Mechanical Methods such as…. . Bolting Screwing or by using clamp devices etc especially where joints may require dismantling. When permanent or sealed joints are required the previously mentioned Thermal and Non-Thermal Bonding Methods alternatives can be us

Lock Seam (Non Self-Secured)