Sheetmetal Joints

Self Secured Or!!!!! Non Self Secured 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 A joint that requires no Non-Thermal Bonding Methods such as………. Acrylic, cellulose, polyamide based and cyanoacrylate based (superglues)

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

Grooved Seam Joint The Grooved Seam Joint is a SELF- SECURED 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…. Lap Corner Butt Tee Flange Butt Lock Seam

Lap Joint (Non Self-Secured) Lap Joints can be secured by using: - Mechanical Methods such as….. Riveting Bolting Screwing or clamp devices etc. 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: - Mechanical Methods such as….. Riveting Bolting Screwing or clamp devices etc. 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 Or……

Tee Joint (Non Self-Secured) Again Tee Joints can be secured by using: - Mechanical Methods such as….. Riveting Bolting Screwing or clamp devices etc. 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

Flanged Butt (Non Self-Secured) Flanged Joints are be secured by using: - 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)