Sheetmetal Joints

1. Sheetmetal Joints

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

3. 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)

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

5. 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). Grooved Seam Joint Seam is completed by use of grooving swage

6. 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. Panned Down Joint

7. 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 Knocked Up Joint

8. Non-Self Secured Joint Types Can Be…. Lap Corner Butt Tee Flange Butt Lock Seam

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

10. 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 Methodssuch 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) Or……

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

12. 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 Methodsalternatives can be us

13. Lock Seam (Non Self-Secured)