Abrasive Diatomaceous Earth Needs Hard Metal to Mix.
Abrasive Diatomaceous Earth Needs Hard Metal to Mix.
(OP)
Hello,
I'm working on a project involving Diaomaceous Earth (DE)and water mixing together on a rotor/stator type mixer.(Please see link)
The mixer was used for 2 months only. We found out that the mixing assembly wore out excessively. By the way the mixer is made of SS316. From one site the hardness of DE is 7 out of 9.
Need your help/tips/suggestions on choosing economical:
1. Boronizing. One of our colleague suggested boronizing the mixing head and check them every week. If there is a significant wear, boronize it again.
2. Hard Chrome plating. My concern with this is that since mixer is rotating at high speed. The chrome plate might just be chipped off.
3. Special Alloys. I'm trying to find a special metal that has a high hardness and tough enough not to break.
D2 alloy - one website showed it has a high hardness but low toughness.
S7 - the same website showed it has mid hardness and mid toughness.
Please also suggest any alloy you know.
Thanks!
I'm working on a project involving Diaomaceous Earth (DE)and water mixing together on a rotor/stator type mixer.(Please see link)
The mixer was used for 2 months only. We found out that the mixing assembly wore out excessively. By the way the mixer is made of SS316. From one site the hardness of DE is 7 out of 9.
Need your help/tips/suggestions on choosing economical:
1. Boronizing. One of our colleague suggested boronizing the mixing head and check them every week. If there is a significant wear, boronize it again.
2. Hard Chrome plating. My concern with this is that since mixer is rotating at high speed. The chrome plate might just be chipped off.
3. Special Alloys. I'm trying to find a special metal that has a high hardness and tough enough not to break.
D2 alloy - one website showed it has a high hardness but low toughness.
S7 - the same website showed it has mid hardness and mid toughness.
Please also suggest any alloy you know.
Thanks!





RE: Abrasive Diatomaceous Earth Needs Hard Metal to Mix.
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It is the fifth photo from top
RE: Abrasive Diatomaceous Earth Needs Hard Metal to Mix.
A tool steel is one option, but you do need some corrosion resistance. Look into 420 or 440C.
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Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net
RE: Abrasive Diatomaceous Earth Needs Hard Metal to Mix.
RE: Abrasive Diatomaceous Earth Needs Hard Metal to Mix.
RE: Abrasive Diatomaceous Earth Needs Hard Metal to Mix.
Crucible might also want to sell you CPM420V, it will out preform 440C by a good margin.
= = = = = = = = = = = = = = = = = = = =
Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net
RE: Abrasive Diatomaceous Earth Needs Hard Metal to Mix.