Dimensional stability
Dimensional stability
(OP)
Hello everybody,
I have to design a high precision squeegee support foe a digital press. Squeegee dimensions: 1"x0.118"x22". Preciosion and dimensional stability of the support is of the essence. 5 microns are way too much. Could anybody advise, please, what would be the best material selection among:
- Wrought Al alloys
- Casting Al alloys
(anodization necessary)
- Rolled SS 316
- SS 316 casting
What would be the recommended heat treatement in each case to acieve stress relaxation and dimensional stability.
The mecanical loads are very low so any alteration of the original mechanical properties is acceptable.
Many thanks for any suggestion.
I have to design a high precision squeegee support foe a digital press. Squeegee dimensions: 1"x0.118"x22". Preciosion and dimensional stability of the support is of the essence. 5 microns are way too much. Could anybody advise, please, what would be the best material selection among:
- Wrought Al alloys
- Casting Al alloys
(anodization necessary)
- Rolled SS 316
- SS 316 casting
What would be the recommended heat treatement in each case to acieve stress relaxation and dimensional stability.
The mecanical loads are very low so any alteration of the original mechanical properties is acceptable.
Many thanks for any suggestion.





RE: Dimensional stability
RE: Dimensional stability
carbon & low alloy steel ~ 11 to 12 x 10-6 m/mK
austenitic stainless steel ~ 16 to 18.5 x 10-6 m/mK
wrought aluminum alloys ~ 23 to 23.5 x 10-6 m/mK
Invar or Nilo-36 ~ 1.3 to 1.5 x 10-6 m/mK
There is a great deal of information on Invar available from Carpenter at their website under the Technical Information header:
http://www.cartech.com/
Nilo-36 is a similar Fe-Ni alloy to Invar available from Special Metals. More information is available on their website under the Controlled Expansion Alloys header:
http://www.specialmetals.com/products/index.html
RE: Dimensional stability
RE: Dimensional stability
RE: Dimensional stability