1. The Largest Rollmaker in USA
WHEMCO Inc.
The Largest Rollmaker in USA
HISTORY

2. PARK CORPORATION $ 300 m turnover with 2500 employees PARK CORP
Whemco Inc. Owners: PARK CORPORATION
Private US company:
Financially rated: “Strong”
Dunn & Brad Street rating: A1 ( D&B reference number )
$ 300 m turnover with 2500 employees
PARK CORP

3. Whemco Inc. Manufacturing

4. Lehigh Heavy Forge Corporation
100 years experience
250 t forgings
Re built computerised oil hydraulic t press
4000t press
Rolls up to 2000 mm dia 145t maximum weight
Supplier of all US Navy Forgings
Bethlehem PA (1 hour Newark NJ)
FORGED ROLLS

5. Erie Forge and Steel Inc.
Specialises in ship shafting
Works in close co operation with LeHigh Heavy Forge inc
Heat treatment of long shafts
Machining of shafts up to 22 m
Erie PA

6. Whemco Steel Casting Inc.
100 t arc furnace
Rolls cast directly on to metal mould
Back Up rolls are double poured: A unique “World Class” product
Selas Differentially Hardening
Steel Industry castings including slag pots and stainless steel coiler drums.
Midland Foundry Pittsburgh

7. Whemco Steel Casting Inc. Cast Back Up Rolls: Solidification
Fast solidification against metal mould gives finer structures
Excellent central soundness achieved by diluting core with a low alloy steel
Combines best of static and duplex technology with DH hardening
Up to 6 cast BU and 4 Section produced per week
CAST BU ROLLS

8. Whemco Steel Casting Inc. Cast Back Up Rolls: Dilution Process
Bridging and segregation would occur if solidification was not interrupted.
A hot lower alloy steel dilution of the core is used to remove segregates
The improved temperature distribution allows Progressive solidification to
continue
The final roll has an internal Soundness equivalent to
Forged roll

9. Whemco Steel Casting Inc. Cast Back Up Rolls: Hardening Process
ALL BU rolls differentially hardened using a Selas furnace
Largest hardening unit in US and Europe
Unique double hardening treatment for 5% Cr BU rolls
Tough centre allows severe water quench to give up to 125 mm radial hardened depth

10. Whemco Steel Casting Inc. Cast Back Up Rolls: Size capability
Recommended
Grade
Max Dia
Cast
Heat
Hardness range Shore C
Type Cr mm
Method
Treatment
Min
Max 3
1650
Diluted DH 58 70 5 60 75

11. Whemco Ohio Foundry Inc.
Spin casting technology
Rolls size up to 1100 mm
Rolls for hot strip mills
CNC finishing lathes
Static Cast Iron BU and Plate mill rolls
Ohio foundry at Lima Ohio

12. Whemco Ohio Foundry Inc.
Investment programme
Melting furnaces
Computer modelling used to ensure product consistency
Thermal analysis of each melt carried out to ensure consistency.
Produce full range of alloy white irons: IC; HiCr; and enhanced carbide rolls

13. Whemco Ohio Foundry Inc. High Chromium Irons: ShellTC Si S P Mn Ni Cr Mo
Shell
HCI Hot mill
2.40
0.50
0.02
0.04
0.65
0.40
16.50
1.00
2.70
0.75
max
0.85
17.50
1.55

14. Whemco Ohio Foundry Inc. High Chromium Irons: CoresTC Si S P Mn Ni Cr Mo Mg
Core
Flake
2.80
1.20
0.05
0.06
0.40
<2.00
<0.20
3.00
1.60
max
0.60 SG
low
0.20
<0.08
2.00

15. Whemco Ohio Foundry Inc. IDCP: Shells NHI GradesTC Si S P Mn Ni Cr Mo
Shell
NHI-450
3.10
0.85
0.05
0.06
0.40
4.50
1.50
0.30
3.50
1.10
max
0.50
5.00
1.90
NHI- Tec
0.80
1.00

16. Whemco Ohio Foundry Inc. IDCP: Shells NHI Hardness
Typical Hardness Range
Equitip Ld
Shell
NHI-450
770
790
NHI-450M
800

17. Whemco Ohio Foundry Inc. Developments
New 5T and 2T furnaces will allow production of enhanced carbide and HSS rolls.
Enhanced carbide rolls with weights above kgm are already been produced.
Triple pour HSS rolls will be produced in 2006

18. Duraloy Technologies Inc.
Horizontal spin casting of heat resisting steels
Petrochemical reactor tubing
Tunnel furnace rollers
Plate hardening furnace rollers
Scottdale PA
( 1hr South Pittsburgh)

19. Duraloy Technologies Inc. Tunnel Furnace Rollers (CSP mills)
Wet Rollers
Used in heating zones
28 Cr 48 Ni plus W
Refractory coated only tyre in contact
Operate up to 1260 ºC

20. Duraloy Technologies Inc. Tunnel Furnace Rollers (CSP mills)
Dry Rollers (Ni Cr Co W alloys)
Replace wet rollers in shuttle zone.
10% less purchases for warping and refractory replacement
Dry rollers in use >2years
Less energy used. Typically €85 k euro/yr
Reduced water treatment costs

21. Steckel Mill Coiler Drums
High temperature cast alloy 20% Cr 30% Ni
Resists deformation / crack propagation / scale pickup
Thermo-mechanical stress analysis
Extends campaign life / reduces repair cost
Advanced foundry technology
Produces largest size drum casting in the world BU
Structure

22. UK Registered Company
Employees not agents (Currently 2)
Whemco’s face in Europe
All enquiries / questions handled from UK
All service handled from UK – Next day response
Commercial and Technical Decisions taken on the spot no need for reference to US

23. Whemco Inc. Summary Roll capabilities:
Barrel
Min Dia.
Max Dia.
Max Length
Max Total
Max Finished mm
length mm
Weight Kgm.
Cast BU Rolls
800
1650
3900
6350
65,000
Forged BU Rolls
2000
4000
7000
145,000
Spun Cast Work Rolls
500
1100
3350
5350
15,000
Forged Work Rolls
400
2250
12,000

24. Whemco Inc. Summary Key Strengths:
Financially strong corporate structure
3rd largest Rollmaker in the western world
Manufacturer of unique range of “World Class” cast BU rolls
Largest Forgemasters in the western world
Target is a long term development of export sales and Service

25. The Largest Rollmaker in USA
WHEMCO Inc.
The Largest Rollmaker in USA
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