BS 6944 is a British Standard that specifies requirements for the automatic flash welding of ferrous metal sections excluding tubes, pipes, and pipe fittings for pressure applications, which are covered in BS 4204. The main objective of BS 6944 is to provide best industry practices for flash welding such that play a positive role in the manufacturing of welding products.
In addition to the definitive requirements, it also requires the items detailed in clause 3 to be documented.
For compliance with BS 6944, both the definitive requirements and the documented items have to be satisfied.
Note: The titles of the publications referred to in this standard are listed on the inside back cover.
BS 6944 on flash welding of butt joints in ferrous metals is useful for:
Flash welding is a type of resistance welding method in which the ends of the workpiece are pressed together and welded, without the use of filler metals. The pieces of metal to be welded are set apart at a predetermined distance based on material thickness, material composition, and desired properties of the finished weld.
In this regard, BS 6944 provides best industry guidance on welding equipment and fittings requirements, materials requirements, and process sequence for component preparation, welding and finishing.
Guidance on establishing procedure approval for each machine, for each size of component, and for each material or combination of materials to be used in production is covered in BS 6944.
Compliance with the testing methods and acceptance criteria recommended by BS 6944 can further help demonstrate whether or not the weld features are adequate to improve service performance.
If you are the manufacturer, BS 4215-2 can ensure that the process of flash welding of butt joints in ferrous metals helps improve welding work to achieve good quality weld.