The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc.
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Forged steel back-up roll is mainly used in 4-Hi mill and 6-Hi mill. The diameter of roll barrel is 350~1400mm. The material of back-up roll includes 60CrMo, 9Cr2Mo, 86CrMoV7, 70Cr3Mo etc. The main types of mills: back-up roll of …
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Forged Steel Back Up Roll Definition. The forged back up roll is a mill roll that supports the work roll and intermediate roll for the purpose of avoiding deflection of the work roll and affecting on the yield and quality of the plate and strip rolling mill. This is the key function of back up roll to ensure the operation of the whole rolling mill. The common materials are …
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The Cold Rolling Mills are used for reducing the thickness of sheet/ strip/ coils of various metals to the desired thickness and to improve various properties like surface finish, strength, thickness tolerances and achieving required hardness like full hard, half hard, quarter hard etc. Normally, these mills are made in 4Hi, 2Hi and 6Hi ...
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Selection of grade depends on the requested depth of hardness, wear resistance and roughness retention. Strip mill rolls are surface hardening rolls: 1st – induction hardening to max. 1100 °C, 2nd – Sub-zero treatment to min. -160°C, 3rd – tempering to max. 650°C.
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Forged Steel RollBack Up Roll For Rolling Mill TINVO. Forged Steel Back Up Roll Definition The forged back up roll is a mill roll that supports the work roll and intermediate roll for the purpose of avoiding deflection of the work roll and affecting on the yield and quality of the plate and strip rolling mill This is the key function of back up ...
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Forged steel back-up roll is mainly used in 4-Hi mill and 6-Hi mill. The diameter of roll barrel is 350~1400mm. The material of back-up roll includes 60CrMo, 9Cr2Mo, 86CrMoV7, 70Cr3Mo etc. The main types of mills: back-up roll of 650mm Mill, …
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6Hi Cold Rolling Mill has six rollers: one pair of work rollers, one pair of middle rollers and one pair of backup rollers, is precision fine rolling mill, usually work in reverse rolling method, output different gauges of CR strips. Most 6high cold rolling mills work in steel strip rolling plant, give better performance than 4High Cold Rolling Mill.
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The commonly used methods for hardness testing of forged steel rolls by Leonard Document Posted on October 15, 2018 October 15, 2018 Comments are Disabled How to choose and optimize the material of 6Hi rolling mill and temper mill?
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Spalling phenomena of backup roll of a hot strip mill and their prevention are discussed. Most of spalling ... の,6Hiミ ル,ク ロスミルのなどがわれ ... Relation between hardness of backup roll and ratio of wear in B hot strip mill2). Fig. 11. Ratio of rolled steel to wear in diameter at each
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Material: Forged alloy steel, En-31, K-310, HCHC, die steel material. Barrel hardness evenness: 3 HSD. Barrel hardness: HSD 80 - 102. Hi: 2Hi mill work roll, 4 Hi mill work roll, 6Hi mill work. Process: Forging
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4) Hardness of roll body 65-70 shore. 5) Roll diameter hardness 40-45 shore. b) Back up roll bearing. 1) Radial four row cylindrical roller bearing "SKF" - 31 3 4 9 9b (diameter 51 7.1 XSL 3x 5 94) 2) Radial two row cylindrical roller bearing "SKF"---3 2] 6 9 (diameter 30 5 x 500 x 200) c) Back up roll bearing seat. 4 8 rolling line regulation ...
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The new roll grade ASTI90X ac hieved following performance increase in a 58 Inch. two stand Skin-Pass Mill (DCR Mill) for Tinplate, working with wet …
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The roll forces and roll torques for both rolls, at low and high reductions and using work rolls of roughness varying from R a =0.3–2.4 μm, are shown in Fig. 1, Fig. 2, respectively. In both figures the surface velocity of the work roll is given on the abscissa.
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Applications: plate mills, hot-strip mills, cold-rolling mills Description: Backup rolls weighing 7-90 tones made of alloy-forged steel with Cr content of 1,40-5,50% have an excellent combination of metallurgical and physical properties such as a compact porosity-free microstructure; good ductility and toughness values; high resistance to fatigue, wear and thermal cracking.
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Product Information. Brief Introduction: Cold rolling mill intermediate Roll applies to high precision 6-Hi (as well as a few 8-Hi) mill, named from working location between work roll and back-up roll, mainly used to control the shape of strip. Material specification of 2%Cr, 3%Cr, 5%Cr, Semi-High Speed Steel are available.
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Applications: plate mills, hot-strip mills, cold-rolling mills Description: Backup rolls weighing 7-230 tones made of alloy-forged steel with Cr content of 1,40-5,50% have an excellent combination of metallurgical and physical properties such as a compact porosity-free microstructure; good ductility and toughness values; high resistance to fatigue, wear and thermal cracking.
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0.8-0.9 for the outer layer of the hot rolling backup roll in the West Germany Wood foundry. Hot rolling backup roll core 0.2 ～ 0.4. 0.7 ～ 0.80.4 1.8 1.8 0.5 mo0.35 for the outer layer of the backup roll of gangdemen hot rolling mill in West Germany. Hot rolling backup roll core 0.250.40.4
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Type – Rolling Mill Work Roll And Back‐Up Roll Shot Blast Machine Small Diameter WR Capacity – 60mm – 150mm Dia. X 1800 Length X 200 Kg Large Diameter IMR/4HI WR Capacity – 200mm – 500mm Dia. X 3500 Length X 3000 Kg …
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We are engaged in offering our clients a vast assortment of back up rolls (for cold rolling mills). In a cold rolling mill, back up rolls of high temperature and tensile strength are required. We have manufactured our range in accordance with international quality standards. Size range : - Dia- 120 mm to 700 mm - Length- 100 mm to 2200 mm
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DeeTee's R.M.R division is accredited with ISO-9001:2008 certificate. DeeTee rolls out world class forged rolls- Sendzimir mill rolls / cluster mill rolls, 6Hi, 4Hi and 2Hi mill rolls, skin-pass rolls etc.. The rolls are prone to very tough working conditions and have to be perfect in terms of wear resistance, toughness and hardness.
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Forged steel back-up roll is mainly used in 4-Hi mill and 6-Hi mill. The diameter of roll barrel is 350~1800mm. The material of back-up roll includes …
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The forged rolls are used in wide cold strip mills of 2Hi, 4Hi, 6Hi reversing reduction mill and tandem mills, double reduction mills as well as temper mills, and skin pass mills. The following table gives a general overview of our main grades for rolls, and all kinds of …
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China aluminum casting rolling Mill Roller Product Description : The modern cold-rolled joint unit has really realized high-speed and continuThe productivity of roll has increase greatly The cold-olled products has devehigh-precision, high-quality and multi model.
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Technical information about the six high mill Roughness Freq. Of roll Diameter (mm) Ra (micron) change Work roll 425 (max) 380 (min) 0.5 – 0.6 500 tonnes Intermediate rolls 490 (max) 440 (min) 0.6 – 0.7 1000 tonnes Back up …
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Backup Rolls For Rolling Mills Back up roll is the largest and heaviest roll of a rolling mill. Using the weight, it delivers the rolling force to the work roll and supports it. We at our manufacturing unit are involved in casting and fabricating of heavy duty backup rolls which uses excellent steelmaking and forging technology to manufacture clean and flawless back up rolls …
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Cold Rolling Mills. Get Price Quote. 4Hi / 6Hi / 2Hi cold rolling mills Width 300 mm - 1250 mm Thickness from 0.12 - 4.0 mm High speed mills Rollcon Engg. Co. specilizes in 4Hi/6Hi Cold Rolling mills of varying widths. Using world class equipments, backed by sophisticated digital drives using PLC's, a high degree. of.
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Rolling Mill Element Machinery Supplies Rolling Mill. A four roll configuration is known as a 4 High Rolling Mill whereby the work rolls are generally smaller in diameter supported by larger backup rollers. These mill can be used for tighter tolerance output material and for reducing material to extremely small thicknesses. Read More >
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Manufacturers of roller mill, roll grinding mill, fluting machine, stone 4 Roller Grinding Mill: 4 Roller Grinding Mill is generally fitted a grinder with. Lab Grinding Equipment Three Roll Four Cylinder Rod Mill. XMB three roller four cylinder rod mill is a new type small size, light weight and multi-function laboratory grinding equipment. It ...
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Another advantage of a 6-high mill is a larger work roll which can transmit considerable torque and allow for high speeds up to 7,000 FPM. Large diameter, light gauge coils can have thousands of lineal feet, and unless the speeds are substantial, (4,000 to 7,000 FPM), the cost of making the material is substantial.
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Forged steel back-up roll is mainly used in 4-Hi mill and 6-Hi mill. The diameter of roll barrel is 350~1400mm. The material of back-up roll includes 60CrMo, 9Cr2Mo, 86CrMoV7, 70Cr3Mo etc. The main types of mills: back-up roll of 650mm Mill, 900mm Mill, 1050mm Mill, 1250mm Mill, 1450mm Mill.
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Figure 1. Hardness range of common Cold Mill backup roll grades. 3.3 Properties of ASTI90X During the development of the new backup roll grade for the Skin-Pass and Cold Rolling applications the main focus was on wear and consequently shape stability, but the other important physical properties need to be controlled as well. The
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Cold rolling mill intermediate Roll applies to high precision 6-Hi (as well as a few 8-Hi) mill, named from working location between work roll and back-up roll, mainly used to control the shape of strip. Material specification of 2%Cr, 3%Cr, 5%Cr, Semi-High Speed Steel are available.
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