Is it possible to accurately laser drill both sides of a plate? For example I have some 200 micron thick steel, I drill from the top side right through the steel, the entry hole is 40 microns diameter and the exit hole is 20 microns diameter. I then drill from the bottom side to create a hole...
Well I was thinking of a technique to machine stainless that involved laser drilling the holes then boring them to remove the taper. The catch is that the laser drilled holes have an entry diameter of 60 microns and exit diameter 30 microns, so the drill bits for bore need to be around 60...
I have some stainless parts that I am electropolishing, the parts are discs that are 0.2mm thick and 15mm in diameter. What I'm finding is that they are warping and I can't figure out what will stop them warping. I can't change the thickness which is very thin and I've reduced the current so...
I'm electropolishing some stainless steel in the lab and as a novice a few things went wrong. In particular the stainless has ended up stained. There are marks were the electrodes were touching the part and there appears to be some kind of 'wash' on the rest of it, like tide marks. It doesn't...
Hi,
I need to know how much material is removed from stainless steel with electro-polishing. I have some laser drilled holes that are 10 microns (10 millionths of a metre) in diameter and i want to know how much the diameter will increase if they are electro-polished? And how much rounder will...
I have some 17-7Ph stainless steel that is in the CH condition. So its been cold rolled and then had 1 hour at 480 degrees C. Now I need to heat it again for 1 hour at 120 degrees C. So how much softer will it get? I mean will i lose 1% or 10%? on the yield strength. What would you think...
Hi,
I have some 0.2mm (0.008 inch) thick stainless steel that I want pressed or stamped flat. It is flatish now but I want it 100% flat. The parts are just 3cm / 1 inch diameter and I don't want to send them out to be done. I want to buy a cheapish fly press or stamping machine. What would you...
Hi, I'm trying to set up a piezoelectric analysis in workbench, but for the life of me I can't find the command/input to do this. The toolbox doesn't include it and the closest I can get is to start an electric analysis and then use a named selection to select a part as solid227 (a piezo...
I'm trying to model a pzt ring in ansys to do a modal/harmonic analysis. The first of possibly a few problems, is that I don't seem to be able to change the point mass. It defaults to the edge of the ring and it needs to be at its centre, so the modal analysis is waving at me like a beam. Any...
I have some stainless steel 17-7 PH that is currently in condition C. So now I need to heat it to condition CH. I'm wondering if I could use one of the mini melting furnaces noted below. The part will fit in there, the furnace is cheap and I only need a few parts. The 17-7 needs 900 degrees F...
I'm trying to understand laser drilling with a mask. I have had some drilling done with the lasers direct focal point changing rapidly to make holes. I send a 2D CAD with 100 holes each at 20um diameter and the part returns. It appears fairly standard stuff.
Now I'm at the point that I need...
Hi,
If I were to buy some annealed stainless steel and then cold roll it harder how would the thickness change?
What I want to end up with is 0.2mm stainless that is 2000N/mm2 hardness. So would I buy for example 0.4mm annealed?
Thanks,
Ant.
I read on the webpage below that 440C is the hardest stainless available and will get to Rockwell C60. Is the manufacture process difficult compared to 304? I think it might end up more expensive. And where could I get some 0.2mm in R&D quantities in Europe? Thanks. Ant...
Hi,
I need some stainless steel that is 0.2mm thick that doesn't deform. I have found some stainless 304 that is "full hard" but it comes in a roll so I'm thinking it must bend because it'll come in a can. I just don't know what I'm googling for any more. I thought "full hard" meant stainless...
How would I best change the thickness of stainless steel? For example, if I bought some with a thickness of 0.25mm how would I best change this to 0.23mm. I would like to test 0.21mm, 0.22mm, 0.23mm and 0.24mm but it is only available in 0.20mm or 0.25mm.
How do I test the hardness of stainless...
I need to find a laser cutting service. I have phoned quite a few but they tend not to go down below 0.5mm in any material. I need 0.3mm stainless steel cut. I'd have thought that smaller thicknesses would make finding the right company easier. Not so, any suggestions welcome.
Thanks,
Ant.
I'm trying to understand the aspect ratio when laser drilling. I will be using an ND Yag for drilling an entry diameter of 20 microns and I know the hole will get smaller as it drills through about 0.2mm thickness.
How can I calculate what the exit diameter will be?
Thanks,
Ant.
I'm trying to understand the aspect ratio when laser drilling. I will be using an ND Yag for drilling an entry diameter of 20 microns and I know the hole will get smaller as it drills through about 0.2mm thickness.
How can I calculate what the exit diameter will be?
Thanks,
Ant.
