×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Welding Preparation - Stainess Steel 316L
2

Welding Preparation - Stainess Steel 316L

Welding Preparation - Stainess Steel 316L

(OP)
Question relates to preparation of 316L seamless pipe and fittings for ship hydraulic lines.  Apart from obvious need to clean up pipe sections after cutting lengths, bending, etc before tack welding fittings in place,  are there any problems with contamination of weld areas etc if cut-off's were done with disks  containing ferrous (carbon steel) materials, manual removal of burrs' etc with carbon steel file.

Major concern is future corrosion in hydraulic lines if they are contaminated with non-stainless metal traces.

RE: Welding Preparation - Stainess Steel 316L

I have never seen any problem using the files around L grade SS as every welder/fitter will have one and use it to prep the weld area. As the file is several orders of magnitude harder than the SS there very little chance for transfer of material.

If your are talking about cutoff and grinding disks being used on both materials we discourage this practise and do everything to prevent their dual use. I know it has happened on more than one occasion and we have gotten by with it due to the simple reason that if either type disk is working properly it is constantly being worn away. Any contaminated area would show up only briefly.

An ideal situation  would be where you have equipment for use on each individual material you are working on at the time.  
 
Our welding of L grade SS is in a very, very corrosive area and any contamination would show up very quickly.
 

RE: Welding Preparation - Stainess Steel 316L

Suggest you use segregate grinding wheels, and, those for high alloy be used for that purpose only.  We color code ours. Same with wire brushes. SS only for high alloy.

RE: Welding Preparation - Stainess Steel 316L

(OP)
Many thanks for your comments - very helpful and much appreciated.

Regards
Gavin Berry

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources