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Alloy Indefinite Chill - Single Pour
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As the name implies, the barrel surface of these rolls does not show a clear chill layer but rather a gradual transition from a carbide rich structure containing a small amount of fine graphite at the surface to a grey core material.
This results in good hardness penetration and therefore the rolls can be used with deep grooves as in small and medium section rolling and also for billets.
The presence of the graphite improves spall resistance and also enhances resistance to fire cracking.
These properties together with the excellent product surface finish make these rolls very suitable for applications where this feature is important.
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Applications
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| Product |
Type of Mill |
Position |
| Plate |
2, 3 and 4 High |
Roughing and Finishing |
| Billet |
2 and 3 High |
Finishing |
| Billet |
Continuous |
Intermediate and Finishing |
| Medium Section |
2 and 3 High |
Intermediate and Finishing |
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Typical Mechanical Properties
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Typical Hardness Gradient
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Micrograph x 100
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Typical Analysis
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| Code |
Leeb E |
Shore C |
C |
Si |
Mn |
Ni |
Cr |
Mo |
| AX3 |
590-620 |
50-55 |
2.9/3.3 |
1.3/1.8 |
0.3/0.6 |
0.8/1.5 |
0.8/1.2 |
0.1/0.4 |
| AX4 |
620-650 |
55-60 |
2.9/3.3 |
1.0/1.5 |
0.3/0.6 |
0.8/2.0 |
0.8/1.2 |
0.1/0.4 |
| AX5 |
650-680 |
60-65 |
3.0/3.5 |
0.8/1.5 |
0.3/0.6 |
1.5/2.5 |
0.8/1.2 |
0.1/0.4 |
| AX6 |
680-740 |
65-75 |
3.0/3.5 |
0.8/1.2 |
0.3/0.8 |
2.0/3.0 |
0.8/1.2 |
0.1/0.4 |
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The Davy Roll Company Limited
Registered in England, Registration No. 162966, VAT registration 172 3848 50 501.
Registered Office: PO Box 21, Coulthards Lane, Close Works, Gateshead, Tyne and Wear, NE8 3DX.
The Davy Roll Company Limited is a member of the Union Electric Steel Corporation group of companies.
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