welding indication on thin sheet

[czar]

hi, I'm doubtful about the type of indication to be placed (always if needed) on the junction of a thin sheet thickness (2mm), therefore without cyanphrine or preparation of the edge or overlap of the lembi. welding is continuous.
someone practical of thin welded sheets?

 

[MassiVonWeizen]

I think you can use the one with the two perpendicular lines.
the second from above

 

[czar]

Thanks massive. Am I wrong if I say it should not serve the indication of the thickness of welding?

 

[MassiVonWeizen]

there are indications to prepare the welding pipes according to the thickness.
if I find the pdf or the norm I place it.
In principle, I do not think it is necessary to indicate anything.
this should already know the welder; it is true that even the preparation of chianfrini is often done to the eye and experience, but if you want to be precise and avoid problems of supply better to speak directly with who will do the job and understand if you look after manuals or only on the experience

 

[Legs]

I don't know the subject well.
but continuous welding made on so small thicknesses do not risk deforming materials
Would it be no longer indicated to make a series of punctual welding?

 

[MassiVonWeizen]

I do not find the pdf norm of reference, if there is, for the size of the lembi.
I found this link permanent links - ppt download Specifically, look at points 10 and 11.

I don't know the subject well.
but continuous welding made on so small thicknesses do not risk deforming materials
Would it be no longer indicated to make a series of punctual welding?

surely the risk of deformation is there, but it is the task of the welder to perform the process avoiding or limiting this phenomenon. If it is absurd to pull a meter of welding all in a blow without precautions it is normal to deform, perhaps so much to throw it. it must therefore use measures such as heating the metal in other areas to counter the deformations, alternating the areas where weld or let rest the piece.

then maybe you need to give additional directions on the design to clarify the result you have to get; I've never been able to draw welded pieces so thin so take with the pliers this last statement

 

[meccanicamg]

I think you can use the one with the two perpendicular lines.
the second from aboveView attachment 72006

parallel not perpendicular.
Number 2.
they approach the lembi, leave distant x and weld.

the ideal would be tig and carry rod.
even the wire welding if well regulated makes of those microscopic welding .....I had a supply that soldered 1mm to wire and seemed really better than the tig. they still make carpenters for pharmaceutical exhibitors and hairdressers.

 

[MassiVonWeizen]

parallel not perpendicular.
Number 2.

I meant perpendicular to the reference line, I was unclear.

 

[PIETRO2002]

hi, I'm doubtful about the type of indication to be placed (always if needed) on the junction of a thin sheet thickness (2mm), therefore without cyanphrine or preparation of the edge or overlap of the lembi. welding is continuous.
someone practical of thin welded sheets?

where I worked, we had a welding on sheet thickness 1.5 mm of stainless steel, the process was called "micro plasma", without intake material.

 

[czar]

thanks 1000 to all. to date we have never put indications according to norm, agreements have been made with the supplier where it is made clear that the soldering is continuous, airtight, with polishing for aesthetic issues, that the final and initial part of the soldering should not have withdrawals so as to prevent the circular edge from being discontinuous, we have provided him with plans to put the sheet in shape and verify its seal.
However, with the usual saving and changing supplier operations, all know-how has not been transferred to the new supplier (they are operations of which the technical office has no news) with the result that the components are not compliant and the quality manager now makes fleas to the documentation.

 

[DrBarde]

thanks 1000 to all. to date we have never put indications according to norm, agreements have been made with the supplier where it is made clear that the soldering is continuous, airtight, with polishing for aesthetic issues, that the final and initial part of the soldering should not have withdrawals so as to prevent the circular edge from being discontinuous, we have provided him with plans to put the sheet in shape and verify its seal.
However, with the usual saving and changing supplier operations, all know-how has not been transferred to the new supplier (they are operations of which the technical office has no news) with the result that the components are not compliant and the quality manager now makes fleas to the documentation.

classic situation that arises when changing light-heart suppliers only economic side without evaluating the actual capacity of the same.
It is true that the table must report everything, but equally true that if a sheet is at 90 degrees such it must remain after welding, for example.

the question to do to quality is: when you changed supplier, you went from the new one to explain to him what you do, present examples etc. each sector has its own peculiarities.

 

[czar]

yesterday they explained to me that the usual supplier charged another company, I have no idea whether to our unconscious or what. We're going to see him today. However the problem is what is written on the drawing (in this case what is not written, which usually generates a call for clarification. . Usually!

 

[czar]

so much to speak: the company has instructed a second company to our unknowing, this received the drawings with the logo deleted so that it could not trace back to us, it did not even receive the sheet developments present in our designs and therefore had to create them with their systems.
This is because our company has no technology to manufacture the component.
there are many steps that did not work or worked wrongly, we as quality control did not carry out the necessary checks on the supplier and this I think will expire a set of measures to prevent it from repeating in the future.
on the note to put for welding the supplier has not been helped. If I can get me to send some sketches of other customers with a trusted reputation.

 

[PIETRO2002]

so much to speak: the company has instructed a second company to our unknowing, this received the drawings with the logo deleted so that it could not trace back to us, it did not even receive the sheet developments present in our designs and therefore had to create them with their systems.
This is because our company has no technology to manufacture the component.
there are many steps that did not work or worked wrongly, we as quality control did not carry out the necessary checks on the supplier and this I think will expire a set of measures to prevent it from repeating in the future.
on the note to put for welding the supplier has not been helped. If I can get me to send some sketches of other customers with a trusted reputation.

Unfortunately, what you write, are practices that many companies adopt, ww quality!

 

[rizzoliomatteo]

I don't know the subject well.
but continuous welding made on so small thicknesses do not risk deforming materials
Would it be no longer indicated to make a series of punctual welding?

Good morning legs,
usually, if the sheet in question is stainless steel,
is good thing to put an aluminum frame behind the lembi during welding,
to ensure a continuous operation and without possible holes.