FW: 2390] Aluminium welding Data

[PB HEGDE]

Dear Nilesh

Attaching the welding and fabrication of aluminum But is there any specific Al alloy in your mind to know

 

Regards

 

Hegde p.B.

 

Subject: FW: 2390] Aluminium welding Data

 

 

 

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of NILESH VARMA
Sent: Wednesday, June 10, 2009 6:26 PM
To: material...@googlegroups.com
Subject: [MW:2390] Aluminium welding Data

 

Dear friends,
 Can anybody help me out to find some really good aluminium welding technical data.

Regards
Nilesh V.

[NILESH VARMA]

Dear Hegde,
 Firstly thank you for the data given by you. For one of our jobs the material we are using is 6061 T651 as per AMS.
 Actually we wanted to know what are the common differences between steel & aluminium welding & also which are the problems commonly encountered while welding. As our objective is to provide the best product to our customer at low cost we are looking at exploring different fabrication techniques. Also it would obviously we clear to you that since Al is low weight material, the application demands extremely low weight & high strength application.

Regards,
Nilesh V.

[PB HEGDE]

There is a vast difference in welding practices between Steel and aluminum welding.

i)Commonly Aluminum is welded by Tig and mig process

ii) For Tig process for more than 5mm thk AC tig is preffered with pure argon ,Pure tungsten is used. For AC tig DC suppressor is used for better performance, Preheating .is to be controlled properly. Weld pool is to be well protected from wind. Cleaning of filler metal before use is very essential. In case DC mode use electrode DC +ve to be used

iii)For mig Electrode  DC +ve to be used ,generally 1.2 dia wire on spool is used.

 

iv) For weld properties ,you will not be achieve the UTS as per base material. However 70% of base material strength is acceptable for weld and accordingly the base material thk is designed.

v)Some of the alloy require Aging or Heat treatment to improve the properties.

 

Aluminum welding is not that simple as steel welding as porosity is major problem you will face

 

Regards

 

Hegde P.B.

[James Bond]

Dear Sir,

i have a job for aluminimum welding - 3mm sheet + 20 square tube welding.

this is my first time.

can u help me with this. - for aluminum welding.

how to do - how to prepare the surface - gas and welding parameters - pre requisities for aluminium welding.

kind regards,

k. vinodh kumar

hosur, tamil nadu, india

+91-9844035036

[Kannayeram Gnanapandithan]

In Aluminium welding, Cleaning Aluminium oxide, hydrated oxide to be cleaned mechanically & by ARC also.  Al2O3 has got melting temperature around 2400 deg celsius whereas Pure aluminium around 660deg celsius. Torch shall be water cooled to avoid high heat inturn, absorb hydrogen which is enemy to form pores. USE AC Square wave with Pure or Zirconiated Tungsten.

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015, ISO 3834, EN 15085, 

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

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