correct coefficient for bending settings

[Gian74]

Hello, everyone. I have recently started working in another company that bought a die-packer with sw esa kvara. in the table materials to the aluminium, sheet metal, stainless steel is preset the value 1, while in the company where I worked previously we had for all three materials the value 0.85. Sincerely with this value I have never had big problems with the profile measures completed. This difference of co-efficiency, but it kind of snouted me. Considering that this value affects the final development of the profile I would like to know which can be the most appropriate value or if there is a table that can provide indications on the coefficient associated with the various types of material (ax 304; ax 316l; galvanized sheet etc.) I accept advice on this subject. thanks to all

 

[meccanicamg]

Of course there is the coefficient.
the coefficient depends on:
- material and mechanical characteristics
- thickness or better thickness range
- bending knife radius
- size of the matrix used
the table of values k is obtained experimentally with tests and measuring before and after to evaluate what happened.
the neutral fiber will almost never pass in the middle unless you make big fold rays compared to the thickness.

 

[Gian74]

Of course there is the coefficient.
the coefficient depends on:
- material and mechanical characteristics
- thickness or better thickness range
- bending knife radius
- size of the matrix used
the table of values k is obtained experimentally with tests and measuring before and after to evaluate what happened.
the neutral fiber will almost never pass in the middle unless you make big fold rays compared to the thickness.

Thank you very much for the advice. In fact, I was referring precisely to a possible manual that collects previous experiences on various types of thickness and sheet. this to speed up time and avoid making various auditions

 

[meccanicamg]

every folder is jealous of his settings and does not spread anything unfortunately