Previous in Forum: Indian ISI Mark For Industrial Motor Controllers - Starters   Next in Forum: Humans Are Taking Automotive Jobs From Robots In Japan
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
10 comments
Rate this Comments: Nested
smathur72
Member

Join Date: Dec 2013
Posts: 6

Number of Passes in Welding and Consumable Cost

04/15/2014 12:43 AM

I would like to know the general practice or rule for determining number of passes in welding i.e if we have to joint two 8 mm SS 304 Plates then how many passes would be required .

how can we determine the cost of consumable in butt welding & fillet welding ?
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
lyn
Guru

Join Date: Oct 2008
Posts: 42374
Good Answers: 1689
#1

Re: number of passes in welding and consumable cost

04/15/2014 12:56 AM

Consult the American Welding Society website.

Or your welders.

Or an engineer.

Or, do some research.
Register to Reply
Kevin LaPaire
Guru
Canada - Member - New Member

Join Date: Jul 2013
Location: Canada but south of 49
Posts: 895
Good Answers: 20
#2
In reply to #1

Re: number of passes in welding and consumable cost

04/15/2014 9:14 AM

Yes, AWS is the standard, or CWB in Canada, both will give you all the info you need on weld joints.

__________________
 Never stop learning
Register to Reply
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 31825
Good Answers: 834
#3

Re: Number of Passes in Welding and Consumable Cost

04/15/2014 12:46 PM

A1) -

A2) It is simply the amount of consumable used multiplied by the cost per unit consumable divided by some measure of the joint; the figure is determined from consumption data and invoices to hand. No CR4 reader can see those from here. Nor can they see which currency is used in the calculation. These things are also commercially sensitive, so don't ask.

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21024
Good Answers: 792
#4

Re: Number of Passes in Welding and Consumable Cost

04/15/2014 10:30 PM

To start, one could estimate that a welding electrode's own cross-sectional area is the same as the area it furnishes to the weld's cross-section.

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply Score 1 for Good Answer
Go to Next "Almost" Good Answer
Wal
Guru

Join Date: Jun 2011
Location: Phnom Penh
Posts: 4019
Good Answers: 102
#5
In reply to #4

Re: Number of Passes in Welding and Consumable Cost

04/15/2014 10:55 PM

That's how I figure too.

1" of electrode for every inch of weld. The number of passes will depend on the weld spec.

__________________
 Difficulty is not an obstacle it is merely an attribute.
Register to Reply Score 1 for Good Answer
Go to Next "Almost" Good Answer
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21024
Good Answers: 792
#6
In reply to #5

Re: Number of Passes in Welding and Consumable Cost

04/15/2014 11:02 PM

Which in turn depends on cross-sectional comparisons.

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply Score 1 for Good Answer
No more "Almost" Good Answers.
2
dolby
Commentator

Join Date: Oct 2013
Posts: 74
Good Answers: 2
#7

Re: Number of Passes in Welding and Consumable Cost

04/16/2014 2:51 AM
  • It depends on type of welding process and weld metal deposition thickness.If you prefer EGW (Electro Gas Welding), then you can fill the groove with the help of 1/2 pass!

  • For general purpose work, Austenitic Stainless Steel 304 welding is carried out by SMAW (Shielded Metal Arc Welding) or GTAW (Gas Tungsten Arc Welding) .In this case GTAW need more weld pass compared to SMAW due to deposition thickness difference with the same diameter electrode/filler wire.
  • Calculation of weld metal is simple mathematics based on groove volume and density of weld metal.

http://www.twi-global.com/technical-knowledge/job-knowledge/calculating-weld-volume-and-weight-095/

  • But nobody in industry interested to play with complicated mathemaktiksPlenty of excel spread sheets are available in internet to calculate weld metal requirement and a simple search with right keywords would open up those files.If the procured consumable doesnot meet the actual requirement,again calculate and give the requirement to procurement department to procure the same brand of welding consumable (If your client is serious about the consumable brand name).This is the common practice followed in all fabrication shops and construction sites. If you need spread sheet, let me know your e-mail.

Pls, Let me know if you need further information on this subject.
Register to Reply Good Answer (Score 2)
Go to Next Good Answer
Shyam
Guru
India - Member - Sensors Technology Popular Science - Cosmology - Dream, Think and Act United Kingdom - Member - New Member United States - Member - New Member Canada - Member - New Member

Join Date: Aug 2006
Location: AM-51, Deen Dayal Nagar, Gwalior, Madhya Pradesh, MP 474001, India
Posts: 3415
Good Answers: 32
#9
In reply to #7

Re: Number of Passes in Welding and Consumable Cost

04/20/2014 1:43 AM

Hi dolby:

Excellent information. I wonder if there is online test method to know if everything going on is as per plan and result will not be having any serious problem. Obviously final testing may be still needed but failure rate can be brought down to minimum.

__________________
 Prof. (Dr.) Shyam, Managing Director for Sensors Technology Private Limited. Gwalior, MP474001, India.
Register to Reply
dolby
Commentator

Join Date: Oct 2013
Posts: 74
Good Answers: 2
#10
In reply to #9

Re: Number of Passes in Welding and Consumable Cost

04/20/2014 5:44 AM

Hi Shyam,


So far I do not have information about an online program as per your requirement. However, if you want to reduce failure rate,then you can try ISO 9000 Quality Management System.Plenty of companies around the globe already adopted ISO 9000 QMS system.

ISO 9001:2008 specifies requirements for a quality management system where an organization

  • needs to demonstrate its ability to consistently provide product that meets customer and applicable statutory and regulatory requirements, and
  • aims to enhance customer satisfaction through the effective application of the system, including processes for continual improvement of the system and the assurance of conformity to customer and applicable statutory and regulatory requirements.

http://www.iso.org/iso/catalogue_detail?csnumber=46486



" A published survey showed that companies that implemented a quality system for ISO 9001 reduced failure rates by 40 percent and customer returns by 54 percent.


http://tpg-tc.com/consultancy-2/environmental-quality-management/iso-9001-quality-management-support/
Register to Reply
2
davlamb
Commentator

Join Date: Feb 2007
Location: Nashville, TN
Posts: 61
Good Answers: 4
#8

Re: Number of Passes in Welding and Consumable Cost

04/16/2014 10:40 AM

Chapter 6.4 in the book Design of Weldments by Omar Blodget gives a good over view. This book is a hardcover and is available from the James F. Lincoln Welding Foundation for 15 dollars US. www.jflfoundation.com. There is also the Weight of Weld Metal Tables for 2 dollars US that expands on the tables in the book.

I hope this helps.
Register to Reply Good Answer (Score 2)
No more Good Answers. Go to first "Almost" Good Answer
Register to Reply 10 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

davlamb (1); dolby (2); Kevin LaPaire (1); lyn (1); PWSlack (1); Shyam (1); Tornado (2); Wal (1)

Previous in Forum: Indian ISI Mark For Industrial Motor Controllers - Starters   Next in Forum: Humans Are Taking Automotive Jobs From Robots In Japan

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Manufacturing:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (68 right now)
Show Members
Advertisement