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1.Alloy Cast Steel Roll |
| Alloy cast steel roller adopts arc furnace to smelt excellent molten steel; adopts advanced foundry and hot treatment technology that has many good characteristics such as high intensity, excellent anti hot crack, tenacity and abrasion resistance, which is suitable for profiled bar thick and middle rolling mill, hot-rolled steel thick rolling mill frame, supporting roller of hot-rolled steel. Metallograpy organization of roller is pearlite or secondary sorbite. |
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Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
AS60A(60CrNiMnMo) |
0.55-0.65 |
0.20-0.60 |
0.60-2.00 |
1.40-2.20 |
≤0.60 |
0.30-0.60 |
AS70A(70Mn2) |
0.65-0.75 |
0.20-0.45 |
1.40-1.80 |
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AS70B(70Mn2Mo) |
0.65-0.75 |
0.20-0.45 |
1.40-1.80 |
- |
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0.20-0.45 |
AS75(75CrMo) |
0.70-0.80 |
0.20-0.45 |
0.60-0.90 |
0.75-1.00 |
- |
0.20-0.60 |
AS75A(75CrNiMo) |
0.70-0.80 |
0.20-0.70 |
0.70-1.10 |
0.80-1.50 |
0.20-0.80 |
0.20-0.60 |
AS75B(75Cr3NiMo) |
0.70-0.80 |
0.20-0.60 |
0.70-1.10 |
1.50-3.60 |
0.40-1.00 |
0.20-0.80 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Elongation Rate(%) |
Use |
AS60A |
45-55 |
＞700 |
＞8 |
Large profiled bar cogging roll; and articles that require high tenacity and |
AS70A |
34-44 |
＞680 |
＞7 |
Moderate and small profiled bar, stick wire cogging rolling mill, hot rolled strip cogging roll, vertical edging mill |
AS70B |
36-46 |
＞680 |
＞7 |
AS75 |
36-46 |
＞680 |
＞6 |
AS75A |
35-55 |
＞800 |
＞7 |
AS75B |
40-60 |
＞800 |
＞7 |
Cogging, rough rolling, hot rolled narrow steel supporting roll |
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| 2.Adamite Rolls |
The characteristics of adamite roll are among steel roll and iron roll that contains many alloy elements such as nickel, chrome and molybdenum; the base organization contains some carbonization and adopts special heat treatment technology; moreover, it contains high abrasion resistance, strong tenacity and good heat resistance; the biggest advantage of it is that there is no rigidity descent. It is suitable for strip steel hot rolled cogging roll and front section of finished milling; stick wire rough rolling, moderate rolling and pre-finishing rolling mill frame; omnipotence rolling mill, roll collar and roll ring of cantilever rolling mill.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
AD140A |
1.30-1.50 |
0.30-0.60 |
0.70-1.10 |
0.80-1.20 |
0.50-1.10 |
0.20-0.60 |
AD160A |
1.50-1.70 |
0.30-0.60 |
0.80-1.30 |
0.80-2.00 |
0.40-1.10 |
0.20-0.60 |
AD180-ZVB220 |
1.70-2.30 |
0.30-0.80 |
0.60-1.10 |
0.60-2.00 |
0.50-2.50 |
0.20-0.80 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Elongation Rate(%) |
Use |
AD140A |
35-50 |
500-800 |
≥1.0 |
Large profiled bar cogging roll; and articles that require high tenacity and abrasion resistance |
AD160A |
40-60 |
500-800 |
≥1.0 |
Moderate and small profiled bar, stick wire cogging rolling mill, hot rolled strip cogging roll, vertical edging mill |
AD180-ZVB220 |
50-60 |
450-700 |
≥0.5 |
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| 3.Graphite Steel Rolls |
The capacity of graphite steel rolls is similar with adamite rolls and the biggest characteristic is that there are few superfine stone mills. It can enhance anti hot crack capacity and oxidation resisting sheet iron adhension capacity of roll, which is suitable for cogging roll or blooming rolling frame.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
GS140 |
1.30-1.50 |
1.20-1.60 |
0.50-1.00 |
0.40-1.00 |
0.50-1.30 |
0.20-0.60 |
GS150 |
1.50-1.70 |
1.00-1.70 |
0.60-1.10 |
0.60-1.00 |
0.40-1.10 |
0.20-0.50 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Elongation Rate(%) |
Use |
GS140 |
36-46 |
540-800 |
≥1.0 |
Moderate and small profiled bar, stick wire cogging rolling mill, hot rolled strip cogging roll, rolling ring of omnipotence rolling mill. |
GS150 |
40-60 |
500-750 |
≥1.0 |
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| 4.High Speed Steel Rolls |
High speed roll has very high rigidity and abrasion resistance. It is made by centrifugal way; the material of core is nodular graphite cast iron. It controls through element and heat treatment; the rigidity of operational layer can reach 80-85HSC; there is vanadium, tungsten, niobium and molybdenum compound carbonization on martensitic matrix that guarantees even operational layer and even abrasion of hole. This roll is suitable for finishing mill frame that can enhance working time and ameliorate surface quality of rolling material.
Chemical Element
Position |
C |
Si |
Mn |
W |
V |
Nb |
Cr |
Ni |
Mo |
Mg |
Operational Layer |
1.6-2.0 |
0.2-1.0 |
0.3-1.1 |
1.5-2.5 |
4.0-6.0 |
0.5-1.5 |
4.0-8.0 |
0.5-1.5 |
4.0-6.0 |
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Core |
3.2-3.6 |
1.9-2.3 |
0.3-0.7 |
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≤0.20 |
0.3-0.7 |
0.2-0.5 |
≥0.05 |
Capacity & Use
Position |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
弹性模量(*103Mpa) |
Use |
Operational Layer |
80-85 |
700-900 |
210-240 |
热轧带钢工作辊，高线预精轧、连轧棒材精轧机架 |
Core |
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≥400 |
140-180 |
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| 5.GNV Rolls |
5. GNV Rolls
Roll for rough mill needs some special characteristics combination; some special characteristics can counteract effect of each other; these characteristics contain abrasion resistance, anti heat crack capacity, shockproof capacity, heat rigidity and heat strength and so forth. Overfull reticulation carbonization can enhance abrasion resistance and shockproof capacity; however, it decreases tenacity of crack; it can promote hot crack development in cogging mill condition. It should add nickel and molybdenum alloy element for reducing carbonization effect and keeping good abrasion resistance, which makes base become bainite/ martensite (spiculate) that is more wearable than common pearlite base. Molybdenum element can enhance high temperature rigidity of roll.
GNV roll is made by adopting high alloy material with special heat treatment; the carbonization in base organization is less 5% that can satisfy requirement of rough mill frame.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
V |
GNV-A |
3.00-3.40 |
2.00-2.50 |
0.80-1.00 |
≥0.15 |
2.50-4.00 |
0.70-1.00 |
0.15-0.35 |
GNV-B |
3.00-3.40 |
1.50-2.00 |
0.80-1.00 |
≥0.15 |
2.50-4.50 |
0.70-1.00 |
0.15-0.35 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Bending Strength(Mpa) |
Use |
GNV-A |
40-50 |
≥510 |
900-1360 |
Stick wire cogging mill frame |
GNV-B |
50-60 |
≥510 |
900-1360 |
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| 6.Alloy Indefinite Chilled Cast Iron Rolls |
The operational layer of alloy indefinite chilled cast iron roll is fine crystal graphite. The volume, shape and distribution of graphite and carbonization can be controlled through chilling action and alloy content. The base can change into martensite from pearlite and bainite by adding manganese, chromium, nickel and molybdenum. It not only can enhance anti peeling capacity, anti hot crack capacity and abrasion resistance of roll but also has little rigidity fall for operational layer of roll. It is suitable for stick, wire, moderate and finishing mill frame of profiled bar.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
IC Ⅰ |
2.90-3.70 |
0.60-1.20 |
0.40-1.20 |
0.60-1.20 |
|
0.20-0.60 |
IC Ⅱ |
2.90-3.70 |
0.60-1.20 |
0.40-1.20 |
0.70-1.20 |
0.50-1.00 |
0.20-0.60 |
IC Ⅲ |
2.90-3.70 |
0.60-1.20 |
0.40-1.20 |
0.70-1.20 |
1.01-2.00 |
0.20-0.60 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Bending Strength(Mpa) |
Use |
IC Ⅰ |
58-70 |
≥160 |
300-400 |
Moderate and small profiled bar, stick wire and narrow steel moderate and finishing mill frame |
IC Ⅱ |
60-72 |
≥160 |
300-400 |
IC Ⅲ |
62-72 |
≥200 |
300-400 |
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| 7.Alloy Chilled Cast Iron Rolls |
The operational layer of alloy chilled cast iron roll has no dissociated graphite; therefore, it has high rigidity and excellent abrasion resistance. It is suitable for small profiled stick, wire rolling and narrow steel finishing mill frame. Metallography organization is combination of fine pearlite and carbonization.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
CC Ⅰ |
3.00-3.50 |
0.20-0.80 |
0.20-1.00 |
0.20-0.60 |
0.50-1.00 |
0.20-0.60 |
CC Ⅱ |
3.00-3.50 |
0.20-0.80 |
0.20-1.00 |
0.30-1.20 |
1.01-2.00 |
0.20-0.60 |
CC Ⅲ |
3.00-3.50 |
0.20-0.80 |
0.20-1.00 |
0.50-1.50 |
2.01-3.00 |
0.20-0.60 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Bending Strength(Mpa) |
Use |
CC Ⅰ |
60-70 |
≥150 |
300-400 |
Small profiled bar, stick and narrow steel finishing mill frame |
CC Ⅱ |
60-75 |
≥160 |
300-400 |
CC Ⅲ |
65-80 |
≥300 |
500-700 |
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| 8.Pearlitic Nodular Cast Iron Rolls(Centrifugal) |
Pearlitic nodular cast iron roll is made by adding nickel, chromium and molybdenum alloy and through special heat treatment. It has good strength, high temperature capacity and anti malfunction capacity; moreover, it has little fall of operational layer rigidity.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
Mg |
SGP Ⅰ |
3.00-3.50 |
1.60-2.40 |
0.40-1.00 |
0.10-0.40 |
1.20-2.00 |
0.20-0.60 |
≥0.04 |
SGP Ⅱ |
3.00-3.50 |
1.40-2.20 |
0.40-1.00 |
0.20-1.00 |
1.50-2.50 |
0.30-0.80 |
≥0.04 |
SGP Ⅲ |
3.00-3.50 |
1.20-2.00 |
0.40-1.00 |
0.20-1.20 |
2.00-3.00 |
0.30-0.80 |
≥0.04 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Bending Strength(Mpa) |
Use |
SGP Ⅰ |
40-55 |
≥350 |
800-1000 |
Large blooming mill, profiled bar continuous rolling, stick wire rough and moderate rolling |
SGP Ⅱ |
50-65 |
≥350 |
800-1000 |
SGP Ⅲ |
60-72 |
≥350 |
800-1000 |
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| 9.Spiculate Bainitic Nodular Cast Iron Rolls(Centrifugal) |
Speculate bainitic nodular cast iron roll adds nickel, manganese, chromium and molybdenum; it has speculate organization (bainite + few martensite) base; compared with pearlite cast iron roll, it has higher rigidity, better tenacity and abrasion resistance. It can carry out production of static foundry and centrifugal foundry.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
SGB Ⅰ |
3.00-3.50 |
1.40-2.40 |
0.20-0.80 |
≤0.50 |
2.50-3.50 |
0.40-1.00 |
SGB Ⅱ |
3.00-3.50 |
1.20-2.00 |
0.20-0.80 |
0.20-1.00 |
3.00-4.50 |
0.40-1.00 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Bending Strength(Mpa) |
Use |
SGB Ⅰ |
55-70 |
≥400 |
600-800 |
Small profiled bar, stick, narrow steel finishing mill frame, high speed wire pre-finishing rolling |
SGB Ⅱ |
62-80 |
≥400 |
600-800 |
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| 10.Alloy Nodular Cast Iron Rolls(Centrifugal) |
The characteristic of this roll is that the graphite is globularity; its characteristic is similar with alloy indefinite chilled cast iron roll; its rigidity is higher than indefinite chilled roll. It adopts static or dynamic foundry.
Chemical Element
Brand |
C |
Si |
Mn |
Cr |
Ni |
Mo |
Mg |
SG Ⅰ |
3.00-3.60 |
1.00-2.50 |
0.40-1.00 |
0.20-0.60 |
＜0.30 |
0.20-0.60 |
≥0.04 |
SG Ⅱ |
3.00-3.60 |
1.20-2.40 |
0.40-1.00 |
0.20-0.60 |
0.20-0.60 |
0.20-0.60 |
≥0.04 |
SG Ⅲ |
3.00-3.60 |
1.20-2.40 |
0.40-1.00 |
0.20-0.60 |
0.50-1.00 |
0.20-0.60 |
≥0.04 |
SG Ⅳ |
3.00-3.60 |
1.20-2.40 |
0.40-1.00 |
0.30-1.20 |
1.01-2.50 |
0.40-0.80 |
≥0.04 |
Capacity & Use
Brand |
Barrel Hardness(HS) |
Tensile Strength(Mpa)
|
Bending Strength(Mpa) |
Use |
SG Ⅰ |
40-55 |
≥300 |
500-700 |
Stick, wire, profiled bar cogging roll frame |
SG Ⅱ |
55-70 |
≥300 |
500-700 |
SG Ⅲ |
60-70 |
≥300 |
600-800 |
Stick wire, profiled bar moderate and finishing mill frame, narrow steel strip finishing mill frame |
SG Ⅳ |
62-70 |
≥300 |
600-800 |
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