Re: [MW:21509] Welding Process Change ( From SMAW to GMAW)

Flux-cored wires offer higher productivity for many mild steel semi-automatic welding applications:

Then why be limited by a solid wire when a flux-cored wire can do it better and faster? Select the flux-cored wire 

optimized for your welding application. Use it and increase your productivity and lower your welding costs.

In FCAW process also, E70 T-5 a low  hydrogen and crack resistant type, is preferable compared to E 70 T-1, 

a rutile version. 

Other types of wires available in FCAW are:

Flux-cored wires offer higher productivity for many mild steel semi-automatic welding applications:

E71 T-1 (FCAW-G):    Highest deposition rates out-of-position.

E71 T-8 (FCAW-S):    Highest deposition rates out-of-position without a shielding gas.

E70 T-4 (FCAW-S):    Highest deposition rates in the flat position.

E70 T-1 (FCAW-G):   Highest deposition rates in the flat position with Charpy properties.

E71 T-14 (FCAW-S):  Fastest travel speed on galvanized and coated steels.

E70 T-5 (FCAW-G):   Fastest way to weld hard-to-weld steels.

    

C Sridhar.
Technical Adviser - Welding,
for Alsta Pristine SS Engineering Private Limited,. Bangalore
(A venture of Advance Eng. Training & Inspection Services). Chennai,
Mobile nos: 0 94449 71097, 0 7406 326326, 0 94445 21267.

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  From: Aakash [harenathjha@gmail.com]

  Sent: 07/31/2014 08:26 AM MST
  To: materials-welding@googlegroups.com
  Subject: [MW:21499] Welding Process Change ( From SMAW to GMAW)

Hello Expert,

 I am seeking your technical advice in terms of Welding process.

For welding of crane girder  we are using SMAW welding with root and hot pass DPT.

 Now people want to change the welding process from SMAW to GMAW. (but root with SMAW)

Plate thickness ranging from 25 mm to 50 mm.

Please give your advice, 

Your prompt action will be highly appreciated

Regards

Aakash

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