Preheat for 10025 S355

[rexrec...@gmail.com]

Dear Experts,

Is there someone can help me how much preheat temperature required for BS 10025 S355JR thickness 8-25mm based on BS5135 or EN 1011-2. I'm planning to use e6010/e7010 for root pass and e7018 for filling and capping.

Regards,

Jhared Rhecede

QC Inspector

[Mayur Hiremath]

Hello,

 

As per the BS EN 1011-2, there is two type of way for calculation,

 

1) As per the BS EN 1011-2 Annex C, Method A.

 

Reference figure- C.2b of BS EN 1011-2

Example :-

 

Combined thickness -31.25 mm

Heat Input -3.61 KJ/mm ( Maximum heat input as per the calculation)

Hydrogen scale-  D (as per table c.2 and used consumable) (Hydrogen Scale Value is mentioned in MTC of consumable)

Carbon equivalent -0.433 (assumed as per the raw Material MTC used for PQR)

 

Minimum preheat temperature- 0deg C ( As per figure #C.2.a of BS EN 1011-2)

 

2) Calculation of the preheat temperature.

 

Tp= 697*CET+160*tanh(d/35)+62*HD power 0.35+ (53*CET-32)*Q-328

 

In your cash pre heat temp will be 0degC

 

 

Regards,

ANAND. B. HIREMATH

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