How to make groove on the surface of nonferrous metal
How to make groove on the surface of nonferrous metal
(OP)
Hi, I am trying to make groove on the surface of nonferrous metal(currently, I am using nickel, monel, inconel).
It is not easy because the thickness of the metal I am using is just 0.027mm.
How can I make groove(depth: 0.0135mm) on the surface of nonferrous metal which has the thickness of 0.027mm.
I am desperate. Please help me.
It is not easy because the thickness of the metal I am using is just 0.027mm.
How can I make groove(depth: 0.0135mm) on the surface of nonferrous metal which has the thickness of 0.027mm.
I am desperate. Please help me.





RE: How to make groove on the surface of nonferrous metal
RE: How to make groove on the surface of nonferrous metal
RE: How to make groove on the surface of nonferrous metal
I forgot to mention one thing.
I shouldn't make the mechanical characteristics(such as tensile strength, elongation, hardness etc.) of the nonferrous metal changed by applying high heat on the material.
The mechanical characteristics should stay as its origianl state.
That's why I was thinking of machining the surface but how can I achieve engraving on such thickness?
Please advise me...
RE: How to make groove on the surface of nonferrous metal
I would give J&M a call and discuss your requirements. You may have to use a removable backup in the tube if machining. The use of diamond wire to cut a groove puts very little bending pressure on the pipe. You will have to build jig to hold the diamond wire. You have to anchor one end and have weight as tension device on the other end.
Do Not try to hold the wire by hand while using.
http://www.diamondtool.com/
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RE: How to make groove on the surface of nonferrous metal
RE: How to make groove on the surface of nonferrous metal
RE: How to make groove on the surface of nonferrous metal
If you can mount the material so that it is well supported you could scribe a line that deep with a single point diamond tool, just like scribing a diffraction grating.
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Plymouth Tube
RE: How to make groove on the surface of nonferrous metal
High precision is also required.
Please help me...
RE: How to make groove on the surface of nonferrous metal
RE: How to make groove on the surface of nonferrous metal
Barring that, you face a process of experimentation - get material samples, select candidate etching solutions (consulting a metallurgy/metallography text may be useful here), apply solutions (of varying strengths) to samples (for varying durations), apply a suitable alkali (one that won't evolve dangerous gases would be preferred) to neutralize remaining acid and stop the etching at the end of the specified durations, rinse, inspect, document, repeat. Oh, and I forgot to add, find candidate masking materials and application methods. Mint is right, that at your groove size you will probably need to use a photo process for the mask.
RE: How to make groove on the surface of nonferrous metal
http://www.photofabrication.com/etching-process/
RE: How to make groove on the surface of nonferrous metal
Unfortunately, contracting with specialized chem etching company is difficult for my current situation.
I am hoping that I could control the groove depth and the width, length precisely on the nonferrous metal by doing the process by myself. How can i evenly and precisely control them? I need to make(control) groove depth 0.0135mm~2mm, width up to 0.001mm~2mm.
I've thought of milling but the thickness of my materials are so thin(0.027mm~1mm) and they are all nonferrous metals, making it difficult for the materials to be cutted off. I even thought of scratching off the surface of nonferrous metal by doing the repeted scratching(X to Y, Y to X) motion with gradual height nerrowing of Z axis using CNC milling but I think this method compromises the precision of the measurement of groove depth,width,length. I already tried pressing using 150ton press. But, if I do this, the depth of groove is uneven and I have no idea how the mechanical materials charecteristics have been changed.....
RE: How to make groove on the surface of nonferrous metal
http://www.diamondtool.com/
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RE: How to make groove on the surface of nonferrous metal
I just tried grinding on SUS316L(0.027mm thickness) by using a sharp tip grinder(?) to make groove. Unfortunately, the grinding job didn't remove the material, instead, it just squashed the material. I have a microscope, so I saw it by using it. The groove pattern is terribly uneven and it was almost like the result I get when I pressed the material with pressing machine. I think it is because of the elongation of SUS316L. I think they are very difficult to be drilled or cut off when the thickness is thin.
Drag engraving using a non-rotating diamond point and chemical etching would be the best option. Am I approching it right? I hope I could try the chemical etching method by myself. Is there any DIY method of doing it? How can I control the depth, width of the groove if I use chemical etching method? Please help me.
RE: How to make groove on the surface of nonferrous metal
Here are two links that maybe of some help. The first has a good selection of points in Carbide. The second is a company that makes electro-marking equipment that might be adapted for marking /etching linear parts.
http://www.2linc.com/engraving_tools_pro_micro.htm
http://www.img-electromark.com/
RE: How to make groove on the surface of nonferrous metal
Actually, I am working on plates not tubes but I think they are applicable. Could you advise me what is the best way to cut nonferrous metal without affecting their mechanical characteristics?
RE: How to make groove on the surface of nonferrous metal
Depending on the amount needed I would look into Electrochemical Milling as mentioned above.
Depend on the precision needed you can use a photo-mask or an insulating varnish like Glyptol. I used the red for a phosphoric acid electrolyte working with SS.
Here is a table of electrolytes from the link posted above.
http://www.img-electromark.com/table/
RE: How to make groove on the surface of nonferrous metal
My goal is to make bursting disc using nonferrous metals. Since they are discs used to be ruptured when it reached to a certain pressure level, controlling that certain bursting pressure level is so difficult to achieve. That's why I need the mechanical characteristics of those nonferrous metals unchanged so that I can prepare a dozens of bursting discs in the same bursting pressure and the same specification. I am so excited doing this for myself. I hope I could have your continuos support then I will back to you with actual result. Please help me.
RE: How to make groove on the surface of nonferrous metal
When you say this is a bursting disc it sets of red flags and alarm bells about safety issues. Bursting discs are usually used in pressure vessels. Have you exhausted all the options in looking for commercially available bursting disc or relief valve?
If this is truly your only option you have to accept that you will have tolerances and the parts will not be perfect. You need to make the calculations for what those tolerances can be. Every process will change the material properties in someway.
RE: How to make groove on the surface of nonferrous metal
The material composition is so dynamic.. even the composition of the same material is different when it is from a different lot.
How can I make the performance uniformed bursting disc out of such dynamical material composition change?
Below is the inspection certificate from the material supplier.
They are same material(SUS316L), the difference is Lot number.
**Chemical composition**
SUS316L Material from A LOT:
C(%): 0.09, SI(%): 0.303, Mn(%): 1.59, S(%):0.0010, P(%): 0.029, Cr(%): 16.79 Ni(%): 10.13, Mo(%): 2.32, N(%): 0.034
Tensile strength 97.8KSI, Yield strength 49.5KSI, Elongation 5.50%, Hardness 88.0HRB
SUS316L Material from B LOT:
C(%): 0.022, SI(%): 0.51, Mn(%): 1.38, S(%):0.0010, P(%): 0.03, Cr(%): 16.49, Ni(%): 10.22, Mo(%): 2.05, N(%): 0.03, Cu(%): 0.3
Tensile strength 95.8KSI, Yield strength 43.7KSI, Elongation 59.8%, Hardness 83.0HRB
So, having the same mechanical characteristics of those material is different. If I want to have burstin disc which bursts at 1kgf/cm2, the material's thickness and he groove depth, width has to be different according to the material lot. This project is so challenging...
RE: How to make groove on the surface of nonferrous metal
Your Carbon on Lot A is out of spec and Silicon on Lot B is out of Spec. Also Elongation on A lot is far too low.