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Trying to adjust my variables trying to qualify a few procedures
4130 625 overlay base material 4130 hardness readings 233
welding variables
24 jls avg
625 stck
4 hrs PWHT
hardness came back high haz cam in as high as 319
trying to keep them between 2...
Answer Snippets (Read the full thread at eng-tips):
If your welding a plate, weld treatment condition of the 4130? Was it quenched and tempered? 24 joules per inch? Why so low?
How many there as well
The haterial....
And PWHT, face off 1/8" This will help prevent hardness issues in the HAZ .
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So i was talking to my contractor the other day about an up coming job welding an item that is 4130 and will be machined to fit a pressed in piece of round stock. the only welding will be around the end where the round is pressed about 1/8-5/32 (havent...
Started by jaspepp on
, 15 posts
by 7 people.
Answer Snippets (Read the full thread at jeepforum):
Unless the item is going flat "pretty....
Welding 4130 TIG.
But the best advise the time but most think its ok because it looks "pretty".. .
I vote TIG.
More than any other I'd say.
I weld 4130 tube quite often...
Process wise.
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This is 4130, 1.25" tubing with 0.35 wall thickness.
The filler is ER 70-S2 0.35.
The idea is that I want to test my weld skill and make sure the stuff I build is safe. ( I mostly plan to build bicycles ).
Do you guys think the failure occurred at the...
Started by febikes on
, 25 posts
by 18 people.
Answer Snippets (Read the full thread at weldingweb):
It fractured next to a weld welding 4130 in the hobby world....
It fractured next to a weld affected zones being critical when welding alloy steels.
About heat affected zones being critical when welding alloy steels.
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I reviewing a WPS that list the Materials as a P number 4130 grade A519 , this WPS states it was prepared in accordance with ASME IX , I don't see any P number 4130 , only reference I can find is A519 which has S number of 1 , this is for welding tube...
Answer Snippets (Read the full thread at eng-tips):
Suggest using ASME Section IX for development of a welding procedure and weld qualification record to be in a heat treated condition, you may elect to butter the 4130, locally PWHT and complete the weldYou are correct, 4130....
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Hi, guys !
Where (CG location)should be , by historical standards for a fuse (having the chance to move wing later,a little)
PS: would be 25% of wing position right ? (Cage alone)
Thankz
Started by clanon on
, 7 posts
by 5 people.
Answer Snippets (Read the full thread at homebuiltairplanes):
If you are designing an airplane, there is way more math that you must .
PS:I'll do the welding myself.
Mountain Very helpful!!
I plan to have a nice range for locating the wing after welding the cage.
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I have a WPS with the filler metal specification 4130, manufacture Techalloy, F-No. A & A-No. 11. Testing of this procedure had Charpy Impact testing at -20C. Is it acceptable for me to use filler metal from another manufacture other than Techalloy as...
Answer Snippets (Read the full thread at eng-tips):
= = = = = =....
Welding 4130 can be done with several recognized filler.
You may be surprised as to what was supplied.
Weld procedures can be qualified.
Composition of the filler metal, and if it was custom made to match 4130.
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I have a welding handbook that suggests that CO2 is better for welding with a MIG, but some people prefer Argon or Arg/CO2 mix. What are your experiences? I am mainly interested in welding sheet metal, such as AK receiver thickness. I would be welding...
Started by Beryl on
, 11 posts
by 10 people.
Answer Snippets (Read the full thread at akfiles):
That it's a bit easier to get a nicer looking weld with the argon/co2 mix when welding thinner sheet metalWith MIG, I was always told pure Argon would not let the weld penetrate very deep in steel and that pure CO2 would put penetrate....
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Hi folks, I have an application where I need to fabricate a 316 stainless steel box about 2' or 60cm cubed in size out of 5mm(about 1/5") thick stainless steel. It will have a 2 1/2" or 64mm skirt at 45 degrees round the base to fair out the 90 degree...
Started by SAG 180 on
, 12 posts
by 8 people.
Answer Snippets (Read the full thread at practicalmachinist):
With practice - experience you can....
A weld is always going to shrink.
Or stainless with the protective film recently removed does not weld as well immediately the films taken best results tacking it well and then just getting on with it.
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Ok normally I do not run into problems doing these, but I have a fairly thick wall tube with a thin insert, 2"x.250 wall tubing and the thread in insert accepts a 1.25" rod end so that gives me less than .125" wall thickness of pure material.. Now that...
Started by fordman on
, 17 posts
by 12 people.
Answer Snippets (Read the full thread at weldingweb):
Even if you were to tack weld a nut onto a surface you cannot weld all ....
It is a 100 much that it is impossible to use the thread .
If the tube and insert are 4130 you will need to anneal before chasing the threads.
welding.
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Our company has been using 01 tool steel (meets ASTM A-681) for stop blocks in an application we have. We are now looking to make the flip lever that goes between the stop blocks out of the same material. What is the procedure to use for welding a block...
Answer Snippets (Read the full thread at eng-tips):
In reading the welding recommendations, it again mentions re-tempering the material after welding....
Here is guidance for welding 01 tool steel;
http://ww w.crucible service.co m/eselecto r/prodbyap p/tooldie/ ketos.html Thank you Metengr.
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