Ball Mill Head Extended Crack Repair

Industry Type
Cement

Product Group
Lotherme

OUR SOLUTION

Product
Lotherme 352

Size (mm)
3.15

Current (Amps)
110

Quantity (Kgs)
4

Product
Lotherme 352

Size (mm)
4

Current (Amps)
140

Quantity (Kgs)
10

Product
Lotherme 510 N

Size (mm)
4

Current (Amps)
130

Quantity (Kgs)
22

Product
Lotherme 802

Size (mm)
4

Current (Amps)
220

Quantity (Kgs)
10

Product
Lotherme 457

Size (mm)
4

Current (Amps)
130

Quantity (Kgs)
10

ANALYSIS

Equipment
Ball Mill

Component Name
Head

Type of Problem
Crack

Problem Due To
The shell is 25 years old and due to hitting liners, Rapid force

Previous Solution
XUPER 660 NH,NUCLEOTECH 2222 OF EWAC ALLOY

Base Metal
Cast Steel

Dimension (Crack Details) (mm) L×T×W×D
650×105

JOB PICTURES

OUT SIDE THE SHELL USING LOT352,457,510N,802

INSIDE THE SHELL

Procedure

1. Down hand position made the gougng with lot 802 up to 60 mm depth and grove width of 80 mm and grinding also made to removal of weld metals.

2. Outside the mill head pre heated the job up to 130 dig.

3. Rebeaked the lot 352 250 dig for 1 hour

4. Root run with lot 352 3.15 mm with peening the weld metal on hot condition due to further crack should not devolop.

5. Multy layers with lot 352 4mm, lot 457 4mm.final 3 layers with lot 510n.

6. The same proceser followed inside the mill balance 50mm depth and width of 80 mm

7. The ICL has given 48 hours to complite the job. We took as a challenge and we handed over the job with in 44 hours.