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Case Study
TRANSPORT SECTOR

Joining

Industry Type
Transport

Product Group
Lotherme

Our solution

Product
Lotherme 352

Size (mm)
3.15/ 4.0

Current (AMPs)
100/ 130

Qty. (Kgs)
16

JOB PICTURES

Gear Wheel Joined by Lotherme 352

Gear Wheel Joined by Lotherme 352

None

None

ANALYSIS

EQUIPMENT
Crane 25 Tones

COMPONENT NAME
Gear wheel

TYPE OF PROBLEM
Fabrication

PROBLEM DUE TO
Fatigue

BASE METAL
EN 8 & EN 9

COMP. WEIGHT (kgs)
200

DIM ENSIONS (mm) W * Outer Dia
140/220 * 760

Procedure

The EN 9 HUB is Welded to EN8 Gear of the 25 T Crane.
EN9 Hub welding was cracking initially.
Then Annealing was done at 750°C by Induction Coil then welding was done.
D.P. Test was done. Component is put in to service and working satisfactorily.

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