Roll shell, roll core, Aluminum casting & rolling machine

SHELL & CORE
SINOSTEEL
Office: No.1 Beihuayuanjie, Sanjianfang, Chaoyang, Beijing 100024, China www.sinosteelengineering.com
Tel: +861057280067 Cell: 0086-13811497114 market@sinosteelengineering.com
CATALOGUE
ROLL SHELL & CORE
BEIJING SINO STEEL ENGINEERING & EQUIPMENT CO., LTD.
March 7, 2016

SHELL & CORE
SINOSTEEL
UCASTING & ROLLING ROLL SHELL & CORE FOR ALUMINIUM CASTER
1BROLLER SHELL
BLANK CASTING
BLANK CASTING

SHELL & CORE
SINOSTEEL
FORGING

SHELL & CORE
SINOSTEEL
HEAT TREATMENT

SHELL & CORE
SINOSTEEL
MACHINING

SHELL & CORE
SINOSTEEL

SHELL & CORE
SINOSTEEL
Roller shell for aluminium casting and rolling machine works under serious circumstances. The
temperature on the surface layer of shell changes periodically from 30˚C to 650˚C, which results in
periodical thermal stress. The thermal stress causes fatigue crack on the surface. During production,
thermal fatigue crack occurs in a certain depth later, and service life of the shell will be longer
accordingly.
Sino steel roller shell adopts material of Cr-Mo-V alloy steel, which is specially melted, forged and heat
treated, and has good property of fatigue resistance. The period before thermal fatigue crack occurs in
a certain depth is one time longer than normal material. Better mechanical properties of the material
also improve the quality of aluminium products. Meanwhile, with continuous study of heat treatment
process by Sino steel technicians, axial hardness differential of our roller shell reduces to less than
10HB. Complete quality control system and after sales service enable us to meet the most demanding
requirements of our customers. For example, for our Ф960XФ800X1950 roller shell, rolling amount
reaches over 15000Tper pair rolls.

SHELL & CORE
SINOSTEEL
Material: 32Cr3Mo1V
-- Chemical Composition
C Si Mn P S Ni Cr Cu Mo V
0.27
-0.37
0.20
-0.40
0.20
-0.50
<0.025 <0.025 <0.25
2.70
-3.20
<0.25 0.9-1.1
0.15
-0.20
-- Mechanical Properties
Temperature
ºC
Tensile
Strength
MPa
Yield Strength
MPa
Elongation
%
Surface
Reduction
%
Impact
Toughness
J/cm
3
surrounding 1358 1258 16.1 57.3 83.5
500 1064 905 17.8 78.4
600 835 752 19.7 84
630 721 592 22.6 92.1
680 442 375 29.3 95.6
-- Physical Properties
--- Elastic coefficient: E=1.97X10
5
N/mm
2
--- Thermal Conductivity
Temperature ºC Thermal Conductivity W/m ºC
300 35.8
400 35.8
500 33.9
600 28.0
700 20.5
--- Heat Expansion Coefficient
Temperature ºC Heat Expansion Coefficient 10
-6
/ºC
0-100 11.87
-200 12.71
-300 13.22
-400 13.77
-500 14.15
-600 14.40
-700 14.68

SHELL & CORE
SINOSTEEL
3BManufacturing Process of Sino steel Roller Shell
Melting
Ladle refining melting
Vacuum degassing
Ingot casting
(Chemical composition
report)
Blank forging
Heat hole punching
Hole enlarging forging
Heat treatment after
forging
Microscopic structure
inspection
(Microscopic structure
report)
Rough turning inside and
outside surfaces
Ultrasonic detecting
(Detection report)
Hardening+Tempering
Sampling
Hardness and mechanical
property inspection
(Hardness report)
Inside hole
semi-finish machining
Inside hole
finish machining
Dimension & roughness
inspection
(Dimension Report)
Packing & delivering
Oversize heat assembling

SHELL & CORE
SINOSTEEL
2BROLL CORE
Material
42CrMo, ladle refining melting
Structure:
Reversible-type, water-cooled casting & rolling core structure,
which is with high cooling capacity, makes even temperature
on the roll surface, and ensures product in good shape.
Manufacturing Process of Sino steel Roller Core
1. Forging: 12000T hydraulic presser with forging ration not less than 3
2. Heat treatment after forging: normalizing + tempering, relieving forging stress
3. Rough machining: machining subject to dimension requirement of hardening and tempering
treatment
4. Detection: according to GB/T6402-91 with accuracy of Class 2
5. Hardening and tempering treatment: hardness 300-340, furnace cooling for stress relieving

SHELL & CORE
SINOSTEEL
6. Sample cutting: mechanical property inspection
7. Full body welded with stainless steel by machine
8. Surface rough turning after welding
9. Surface heat treatment hardness: HRC40
10. Detection to inspect no defects on the surface, such as cracks etc.
11. Semi-finish machining: drilling axial and radial water holes and making radial water groove
12. Stability treatment
13. Finish machining: finish machining each dimensions to meet the dimension requirements in the
drawing except for outer diameter and roll neck
14. Final finish machining: finish grinding outer diameter and roll neck to meet the dimension
requirements in the drawing

SHELL & CORE
SINOSTEEL
超声波检测 ULTRASONIC TEST
设备
EQUIPMENT
K-K
USN 58L
灵敏度
SENSITIVITY
B100fs B20fs
检测方法
TEST METHOD
脉冲
PULSE
工作层深度（mm）
DEPTH OF SHELL
30-40
频率
FREQUENCY
0.5MHz
2.5MHz
检测结果
TEST RESULT
合格 OK

SHELL & CORE
SINOSTEEL
Partial Reference List
1 ChongQing HuanYa Aluminium belt factory
2 ShaoXing Li Bo cable Co.,Ltd
3 Huaxi Aluminium Industry Co.,Ltd
4 JiangSu Sulv Aluminium Industrial Co.,Ltd
5 NorthWest Aluminium Fabrication company of LanZhou Aluminium Co.,Ltd
6 CHINA GKO GROUP
7 South-East Aluminium Co.,Ltd
8 ChongQing YinHao Aluminium Industrial Co.,Ltd
9 RuYuan East Sunny Intensive-foil Co.,Ltd
10 Jiangyin BoWei Alloy Material Co.,Ltd
11 LanZhou Aluminium Co.,Ltd
12 FuShun Aluminium. PLANT
13 GanSu HuaXing Al.Industrial Co.,Ltd
14 NorthWest Aluminium Fabrication company of LanZhou Aluminium Co.,Ltd
15 Yunnan Aluminum Stock Co.,Ltd
16 Shangdong FuHai Aluminium Industry Stock Ltd.
17 Shanxi Shuhai Group Co., Ltd.
18 Paragon Industries Ltd.(India) (Indirect supply)
19 Shanxi Shuhai Group Co., Ltd.
20 Henan Xichuan Aluminum Co. Ltd.
21 Qinghai Aluminum Co.,Ltd
22 Qinghai Aluminum Co.,Ltd
23 Qingtongxia Aluminum Stock Co.,Ltd

SHELL & CORE
SINOSTEEL
24 Qingtongxia Aluminum Stock Co.,Ltd
25 JiangSu Changfa Refrigeration Stock Co., Ltd.
26 Zhejiang Guang Da Co., Ltd.
27 Shandong Chuangxin Plate Co., Ltd.
28 RuYuan East Sunny Intensive-foil Co.,Ltd
29 Henan Xichuan Aluminum Co. Ltd.
30 Huzhou Century Dongliang Aluminum Co. Ltd.
31 Yun Nan Al. Industry Stock Co., Ltd.
32 Chinalco, China
33 UAE Profile Aluminium
34 Indonisia Starmas Aluminium
35
Malaysia Alcom
36
37
ESS DEE, INDIA
Jindal Alunimiun, India
38 Manaksia Aluminium Company Ltd, India
39 METENERE LIMITED, INDIA.

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