Learning, Books, etc
Learning, Books, etc
(OP)
As part of my BSME, I took a welding survey course but it we just learned the very basics of stick/TIG/MIG along with a dose of oxyacetylene tossed in.
I've several times been through the welding sections in Shigley's machine-design text and his machine-design handbook.
I've also read sections of the two Blodgett books through Lincoln.
My problem is, I still don't really know how to detail the fabrication of a weld. For example, we build large machine bases for our equipment. While I can analyze the welds for strength and fatigue, I was just reviewing a drawing created by my predecessor where it calls out a pre-heat requirement, the minimum number of passes, and a requirement to place a 1/32 spacer between two places being joined by fillet welding. I cannot find any reference by which I can validate that drawing so I'm just following it blindly which is pretty scary to me.
My question, then, is what references am I missing? I've glanced at the AWS site but was overwhelmed by the number of different spec's available. I suppose if I could preview them I'd have some confidence in whether they provided the necessary info.
What recommendations would y'all have that would help me to "get smart?" I'm not looking to become a welding engineer but I do need to learn more than I know. I'm just not sure how.
I've several times been through the welding sections in Shigley's machine-design text and his machine-design handbook.
I've also read sections of the two Blodgett books through Lincoln.
My problem is, I still don't really know how to detail the fabrication of a weld. For example, we build large machine bases for our equipment. While I can analyze the welds for strength and fatigue, I was just reviewing a drawing created by my predecessor where it calls out a pre-heat requirement, the minimum number of passes, and a requirement to place a 1/32 spacer between two places being joined by fillet welding. I cannot find any reference by which I can validate that drawing so I'm just following it blindly which is pretty scary to me.
My question, then, is what references am I missing? I've glanced at the AWS site but was overwhelmed by the number of different spec's available. I suppose if I could preview them I'd have some confidence in whether they provided the necessary info.
What recommendations would y'all have that would help me to "get smart?" I'm not looking to become a welding engineer but I do need to learn more than I know. I'm just not sure how.
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Bring back the HP-15
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RE: Learning, Books, etc
RE: Learning, Books, etc
AWS (American Welding Society) www.aws.org
http:/
ANSI/AWS A3.0, Welding Terms and Definitions, Including Terms for Brazing, Soldering, Thermal Spraying, and Thermal Cutting
http://www.welding.org/cart/training/awsbooks.htm
RE: Learning, Books, etc
Also ASM International Handbook Vol. 6 (published 1993).
ASM Metals Handbook 8th Ed. Vol. 6 (published 1971) is a different book altogether, still very useful, rich of examples that help understand the reasoning behind improvements in processes.
http://www.welding-advisers.com/
RE: Learning, Books, etc
ASME B&PV Code Section IX
MIL-STD 22D
MIL-STD-278F [not current-replaced by S9074-AR-GIB-010/278]
& more books from Lincoln:
https://ssl.lincolnelectric.com/foundation/
for referencr, ASME Sec. VIII gives preheats for various materials (i.e., Table UCS-56)
RE: Learning, Books, etc
http://www.unified-eng.com/scitech/weld/weld.html
"I think there is a world market for maybe five computers."
Thomas Watson, chairman of IBM, 1943.
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?
RE: Learning, Books, etc
By controlling the minimum number of passes, the heat input may be easier to control.
Preheat will also reduce residual stress provided it is applied properly.
The less residual stress, the more dimensionally stable the weldment will be . This can be more noticable on items which get subsequent machining.
Hope this helps
Gerald Austin
Iuka, Mississippi
http://www.weldinginspectionsvcs.com
RE: Learning, Books, etc
RE: Learning, Books, etc
You need to talk with the manufacturing engineer at your facility if you have such a person and dicuss the process that will be used to make the weldment. Talk about the ability to assemble and then weld the parts and how the parts are located. You should then have a better understanding on how to design your components and the welding of the components.
RE: Learning, Books, etc
Therein lies the problem: Our whole company has five folks, top to bottom. I've never worked with a welding engineer or MfgE with expertise in metal joining so I've never had the opportunity to pick those brains...
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Bring back the HP-15
www.hp15c.org
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RE: Learning, Books, etc
P.S. I'm looking for work right now.
RE: Learning, Books, etc
lwatkins@delphinus.com