New Posts New Posts RSS Feed: Which rivet material?
  FAQ FAQ  Forum Search   Register Register  Login Login

Which rivet material?
 Post Reply Post Reply Page  12>
Author
  Share Topic Share Topic  Topic Search Topic Search  Topic Options Topic Options
mole View Drop Down
Groupie
Groupie


Joined: 02 Feb 06
Location: United Kingdom
Online Status: Offline
Posts: 43 		Post Options Post Options   Quote mole Quote  Post ReplyReply Direct Link To This Post Topic: Which rivet material?
    Posted: 14 Aug 21 at 12:46pm
The best rivets for high load fittings are monobolt rivets.
The important parameter is the sheer strength of the rivet.
Monel rivets are good allrounders on smaller rigs/boats. 
Most important is the preparation of the hole. Use good quality of drill bits, deburr the holes (you can get a special tool for inside the hole)
Make sure the fitting fits snug to its mating surface, any gap will significantly reduce the strength. Fettle or form it if required.
Make sure any necessary alignment is considered. Particularly spreader brackets with the mast heel.
Obviously make sure the rivet is the correct length,- grip range
Use a good quality riveting tool with the correct nozzle

The jointing compound has been covered, and most masts are 7000 series alloy which has good corrosion resistance (relatively), but if you have any other alloy it may require a different type of insulating material/compound.
Back to Top
Sussex Lad View Drop Down
Far too distracted from work
Far too distracted from work


Joined: 08 Jun 18
Online Status: Offline
Posts: 360 		Post Options Post Options   Quote Sussex Lad Quote  Post ReplyReply Direct Link To This Post Posted: 10 Aug 21 at 7:39am
Originally posted by Oatsandbeans

Duralac -full of CrVI -not flavour of the month environmentally , everyone is getting rid of it!


....and replacing it with stuff that doesn't work Wink Nitromors and Creasote went the same way. All for the greater good I suppose.

To be fair Chromate has been known as a carcinogen for years. Wear Gloves.


Edited by Sussex Lad - 10 Aug 21 at 7:42am
Back to Top
Andymac View Drop Down
Really should get out more
Really should get out more


Joined: 04 Apr 07
Location: Derbyshire
Online Status: Offline
Posts: 852 		Post Options Post Options   Quote Andymac Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 7:33pm
Doh! Nomel = Monel. Typo x 2! Thanks
Back to Top
2547 View Drop Down
Really should get out more
Really should get out more


Joined: 11 Aug 11
Online Status: Offline
Posts: 1151 		Post Options Post Options   Quote 2547 Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 6:43pm
Originally posted by Oatsandbeans

Duralac -full of CrVI -not flavour of the month environmentally , everyone is getting rid of it!

I believe it’s banned in the US. TechGel is the now preferred but it doesn’t set and so is less effective. 
Back to Top
423zero View Drop Down
Really should get out more
Really should get out more


Joined: 08 Jan 15
Location: United Kingdom
Online Status: Offline
Posts: 3420 		Post Options Post Options   Quote 423zero Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 5:56pm
https://www.marshfasteners.com/can-stainless-steel-and-aluminum-be-used-together/
Robert
Back to Top
Oatsandbeans View Drop Down
Far too distracted from work
Far too distracted from work


Joined: 19 Sep 05
Location: United Kingdom
Online Status: Offline
Posts: 382 		Post Options Post Options   Quote Oatsandbeans Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 5:09pm
Duralac -full of CrVI -not flavour of the month environmentally , everyone is getting rid of it!
Back to Top
L123456 View Drop Down
Really should get out more
Really should get out more


Joined: 30 Apr 12
Online Status: Offline
Posts: 500 		Post Options Post Options   Quote L123456 Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 2:48pm
Originally posted by Sussex Lad

Just as a suggestion I use Duralac liberally smeared between the surfaces before riveting. It inhibits electrolysis.<div ="md-9="" sm-12"="" style="-sizing: border-; width: 555px; : left; color: rgb64, 64, 64; font-family: " sans", arial, sans-serif; font-size: 13px; : rgb255, 255, 255; -webkit-font-smoothing: antialiased !imant;"><h1 style="-sizing: border-; -webkit-font-smoothing: subpixel-antialiased; margin-right: 0px; margin-bottom: 15px; margin-left: 0px; color: rgb76, 162, 82; font-size: 24px; font-family: "work sans", sans-serif;"><span itemprop="name" style="-sizing: border-; -webkit-font-smoothing: antialiased !imant; font-size: 30px; color: rgb51, 51, 51; font-family: "Work sans"; width: 499.5px; display: block;"></span><span itemprop="name" style="-sizing: border-; -webkit-font-smoothing: antialiased !imant; font-size: 30px; color: rgb51, 51, 51; font-family: "Work sans"; width: 499.5px; display: block;"><b style="-sizing: border-; color: rgb64, 64, 64; font-family: " sans", arial, sans-serif; font-size: 13px; -webkit-font-smoothing: antialiased !imant;">DESCRIPTION<br style="-sizing: border-; -webkit-font-smoothing: subpixel-antialiased; color: rgb64, 64, 64; font-family: " sans", arial, sans-serif; font-size: 13px; font-weight: 400;"><span style="-sizing: border-; color: rgb64, 64, 64; font-family: " sans", arial, sans-serif; font-size: 13px; font-weight: 400; line-height: 16px; -webkit-font-smoothing: antialiased !imant;">Duralac is a chromate containing jointing compound designed to inhibit electrolytic decomposition between dissimilar metals – often called galvanic corrosion. It is a single pack, air setting product. Used correctly, </span><span style="-sizing: border-; color: rgb64, 64, 64; font-family: " sans", arial, sans-serif; font-size: 13px; font-weight: 400; line-height: 16px; -webkit-font-smoothing: antialiased !imant;">Duralac prevents anodic decomposition.</span></span></h1>


Duralac is a must.
Back to Top
maxibuddah View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 06 Mar 09
Location: United Kingdom
Online Status: Offline
Posts: 1760 		Post Options Post Options   Quote maxibuddah Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 2:21pm
Originally posted by Sussex Lad

Just as a suggestion I use Duralac liberally smeared between the surfaces before riveting. It inhibits electrolysis.


DESCRIPTION
Duralac is a chromate containing jointing compound designed to inhibit electrolytic decomposition between dissimilar metals – often called galvanic corrosion. It is a single pack, air setting product. Used correctly, Duralac prevents anodic decomposition.


between stainless and aluminium it is necessary to use a prevention compound like you suggest. These two are far apart on the galvanic table - https://www.qsl.net/n9zia/electrochemical.html and there will be issues with the ali being corroded if you don't.
Everything I say is my opinion, honest
Back to Top
Sussex Lad View Drop Down
Far too distracted from work
Far too distracted from work


Joined: 08 Jun 18
Online Status: Offline
Posts: 360 		Post Options Post Options   Quote Sussex Lad Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 1:25pm
Just as a suggestion I use Duralac liberally smeared between the surfaces before riveting. It inhibits electrolysis.


DESCRIPTION
Duralac is a chromate containing jointing compound designed to inhibit electrolytic decomposition between dissimilar metals – often called galvanic corrosion. It is a single pack, air setting product. Used correctly, Duralac prevents anodic decomposition.



Edited by Sussex Lad - 09 Aug 21 at 1:26pm
Back to Top
L123456 View Drop Down
Really should get out more
Really should get out more


Joined: 30 Apr 12
Online Status: Offline
Posts: 500 		Post Options Post Options   Quote L123456 Quote  Post ReplyReply Direct Link To This Post Posted: 09 Aug 21 at 12:33pm
Originally posted by Andymac

Depends really. If it is fitting with a high stress load such as shroud attachments, kicker tang etc then Nomel is a must. If it is a low stress fitting ie burgee holder then alloy would be adequate. If in doubt then default to Nomel. NB some plastic fittings could break before the mandrel of a nomel rivet such as HA 262 fairlead used as Laser/ILCA! Outhaul fairlead on boom.

Nomel?

Is that a typo or is that different to monel?

Monel is Nickel Copper Alloy
Back to Top
 Post Reply Post Reply Page  12>

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.665y
Copyright ©2001-2010 Web Wiz
Change your personal settings, or read our privacy policy