When designing the component, sufficient space must be left for the welding operation.
Spot welding
Simple preparation of a welding point
Projection welding
Projection welding is a simple and cost-effective way of joining components with a low to medium load.
The weld projections are inserted once and thanks to their design in accordance with DIN 8519 are very advantageous as regards price. To join the two sheets, the first operation is to create a secure contact by applying pressure in the area to be joined. Then, the point to be welded is heated locally by applying electrical energy and the welded joint is created.
The weld projection is not only used in the joining technique, but also is very suitable as a design element or step protection.
Notes on manufacturing
- The thickness of the sheet S for projection welding can be between 0.63 mm and 3.2 mm.
- The distance A between two weld projections must be equal to or greater than 15 mm
- The optimal dimensioning of the projection height H and the projection diameter D1 can be seen in the attached table in relation to the thickness of sheet S.
- The projection welding can only be carried out upwards.
NOTE
Example parts
Spot welded box
Electricity
- multibend
- deburring
- standard forms
- thread formation
- z-lug
- countersink
- head welder
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Source: TRUMPF Group. View PunchGuide