Drawing Symbols for Bonding/Adhesive
Drawing Symbols for Bonding/Adhesive
(OP)
Could anyone tell me if there are Drawing Symbol standards for bonding/gluing etc., as there are for Welding and brazing. We often produce assembly drawings which require parts to be bonded or semi-permanently locked together by adhesives such as super glue, Loctite, etc.
It would be useful to know the [BS?] drawing symbols to suit these requirements, if they exist yet.
It would be useful to know the [BS?] drawing symbols to suit these requirements, if they exist yet.





RE: Drawing Symbols for Bonding/Adhesive
Bonding is more complicated that simply spreading some glue and clamping the parts together. Meticulous attention to surface preparation is required. I generally identify bonded surfaces with a leader to a note on the drawing. The note in turn references a procedure or work instruction for the entire bonding process, including surface preparation, how much adhesive to use, and where, temperatue and time limits if appropirate, etc.
RE: Drawing Symbols for Bonding/Adhesive
The weld symbols work for us because it helps clarify if the joint is butted together, there will be some leftover fillet on a joint, or if there needs to be extra fill or excess build-up of adhesive.
We also have standard abbreviations (company or industry standard, I don't know) that dictates how the adhesive is to be applied. Those abbreviations also appear in the "notes" area of the weld symbol. If a more detailed explanation is required, we just write a flag not.
--Scott
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RE: Drawing Symbols for Bonding/Adhesive
We use a flag note to call areas that are to be bonded, in the general notes the flag note refers to a specific work instruction that we have developed in-house, based on the manufacturer recommendations for their adhesive product.
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