Helicoiling before Alocrom finish

Helicoiling before Alocrom finish

This topic has 6 replies, 5 voices, and was last updated 23 March 2014 at 03:34 by Bill Pudney.

Viewing 7 posts - 1 through 7 (of 7 total)

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22 March 2014 at 11:32 #147679
James Staniford
Participant
@jamesstaniford
Hi Guys,

Can you insert stainless steel helicoils into aluminium before an alocrom treatment?

Thanks in advance
Advert

22 March 2014 at 11:32 #15700
James Staniford
Participant
@jamesstaniford
22 March 2014 at 11:35 #147680
Ian P
Participant
@ianp
I suspect not but the people doing the anodising or whatever would know.

Ian P
22 March 2014 at 12:38 #147686
Bubble
Participant
@bubble
Hi Jqmes

Alocrom is unaffected by steel, brass or copper inserts in the articles being processed

extract from anochrome.com/ alocrom website

Jim
22 March 2014 at 12:44 #147687
James Staniford
Participant
@jamesstaniford
Thanks Jim, that's great
22 March 2014 at 14:11 #147689
Clive Hartland
Participant
@clivehartland94829
I suggest you thoroughly flush any threaded or insert holes after Alochrom treatment, I have found that salts do stay in the holes. I find on new parts for the instruments are often not cleansed of residues. Even finding small bits of metal when the holes are blown out. The problem is that these salts can make the fixing screws lock up and snap off on dismantling.

Clive
23 March 2014 at 03:34 #147737
Bill Pudney
Participant
@billpudney37759
When I had to work for a living I vaguely remember putting the following note, or something like it on drawings of aluminium bits.

"Alodine/Alochrom prior to inserting thread inserts".

The reason was that whilst the insert was ok with the treatment, the tiny gaps between insert and parent metal could and would retain small quantities of the stuff. Similar to Clives comment above.

cheers

Bill
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