pass schedule theory of hot tmt mill

  • Effect of pass schedule and groove design on the metal

    The roll grooves in a roller and the roll pass sequence in a hot rolling mill are usually designed based on the type of grades and dimensions of the products and the mill capacity. These have been established over the years based on ana-lytical methods. With modern capability of computer based simulation of the hot deformation process, it is possible to

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  • Pass Schedule Calculation for a Hot Rolling Reversing Mill

    Pass Schedule Calculation for a Hot Rolling Reversing Mill Language: Fortran IV. Objective: Pass Schedule Calculation for a Pilot Flat Hot Rolling Reversing Mill,

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  • (PDF) Roll Pass design for hot flat rolling of plain

    The starting point in roll pass design is to draw up the pass schedule which indicates the forms of the passes required to obtain the given profile. At the same time, the number of passes is established, as are the draught for each pass, the sequence and number of turns, distribution of the passes among the mill stands etc.2.1. Roll Pass sketches: Questions and answersa. What are the

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  • Pdf Free Download Hot Rolling Mill Tmt

    Effect of pass schedule and groove design on the metal. Rolling mill pass design pdf WordPress com. Calculating Mill Drive RPMs Is 2 / 13. Your Mill Up to Speed. Amazon com Cold Rolling of Steel Manufacturing. Hot Rolling Mills Automatic Doc No SG 37 Rev no 00 Effective Date 1 OBJECTIVE Rolling is the process of plastically deforming the metal by passing it between a set of rolls revolving in

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  • Hot Strip Mill an overview ScienceDirect Topics

    Mill data from the hot strip mill has been used to calculate the mean flow stress in each pass, assuming the material to be elastic ideally plastic. The roll force model used was a classical slab method with constant friction assumed in the roll gap. For the roughing mill (reversible 4-high) both roll force and roll torque were available so the friction coefficient could be evaluated in

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  • Project Report on TMT ROLLING MILL (Cap: 12,000

    The full form of TMT is Thermo Mechanical Treatment; in this the steel bars are passed through a specially designed water-cooling system. After the bars pass, the outer surface of the bars solidifies while the core remains hot. This creates a temperature gradient in the bars. After the intensive cooling, the bar is exposed to air and the core re-heats the quenched surface layer by conduction

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  • (PDF) PROPOSAL FOR 10 TPH TMT BAR ROLLING MILL

    Rolling Mill Technical parameters Capacity: Dia. 12 mm to Dia. 25 mm TMT Rebars Input Size: 100 mm x 100 mm x 3000 mm Billet for Dia. 12 mm to 25 mm Out put: 10 TPH Depending on working Hours Assumption: Considering 300 working days per annum, and 20 Hours of Rolling per day.

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  • Adaptation of hot mill process models ScienceDirect

    15/06/1996· Applied to the breakdown passes of a schedule, the Sims [1] theory of hot rolling underestimates rolling loads by a factor of two. Dewhurst, Collins and Johnson [2] developed a class of slip line field solution applicable to the roll gap geometry encountered on a modern breakdown mill. The requirement to generate a pass schedule in milliseconds roles out the on-line use of shp line fields

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  • Pdf Free Download Hot Rolling Mill Tmt

    Effect of pass schedule and groove design on the metal. Rolling mill pass design pdf WordPress com. Calculating Mill Drive RPMs Is 2 / 13. Your Mill Up to Speed. Amazon com Cold Rolling of Steel Manufacturing. Hot Rolling Mills Automatic Doc No SG 37 Rev no 00 Effective Date 1 OBJECTIVE Rolling is the process of plastically deforming the metal by passing it between a set of rolls revolving in

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  • Hot Strip Mill an overview ScienceDirect Topics

    Mill data from the hot strip mill has been used to calculate the mean flow stress in each pass, assuming the material to be elastic ideally plastic. The roll force model used was a classical slab method with constant friction assumed in the roll gap. For the roughing mill (reversible 4-high) both roll force and roll torque were available so the friction coefficient could be evaluated in

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  • Maintenance for productivity Rolling models

    the mill. A pass schedule is a series of values for the pass, such as thickness, speeds and forces presets. ABB Review 1/2009 45 Rolling models Maintenance for productivity Exit target thickness (for reduction mills) or exit target elongation (for skin pass mills) The actual roll data such as roll diam-eter, crown, taper, length and texture are also important for a precise calcu-lation

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  • Modeling the Microstructural Evolution during Hot Working

    SSAB’s hot strip mill, rolling is conducted in a reversing roughing mill followed by a continuous finishing mill. In the reversing roughing mill the temperature is high and the inter- pass times are long. This allows for full recrystallization to occur during the inter-pass times. Due to the high temperature, the rather low strain rates and the large strains there is also a possibility for

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  • (PDF) A New Method for Roll Pass Design Optimisation

    Roll wear is amongst the key criteria for devising a rational roll pass design. Rolls in a hot mill have to withstand radial loads up to 12 MN and high temperatures in the range of 900 to 1300 oC. In addition to the obvious need for resistance to breakage, there is the continuing component of roll wear that is critical to the economics of fabrication, and the geometrical tolerances of the

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  • JSW- Steel Plant -Operation process -TMT

    ABB-FULLY INTEGRATED CONTROL SYSTEM FOR JSW COLD ROLLING MILL [email protected] Optimize Make the right pass The [email protected] Optimize software is a pass schedule planning and setup calculation system incorporating a mathematical model for the reduction process in a rolling mill. Based upon specified coil data such as alloy, strip width, entry and exit thickness, the reduction is distributed

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  • MODELING AND CONTROL OF PLATE THICKNESS IN HOT

    mill housing (simplified) Fig. 1. Four-high stand of the finishing hot rolling mill in Dillingen. 2.1 Mill Stand Model On the basis of the mill configuration as depicted in fig. 1 a simplified mill model is derived. Here we are only interested in the vertical behavior of the mill

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  • Long Products Rolling Schedule

    Pass Design and Rolling Theory Joseph Kennedy, Quad Engineering Inc. This presentation will cover pass design terminology, basic rolling principles, and examples of their application and how an operator can use rolling theory to improve decisions made in the mill. 2 p.m. CST. Break. 2:15 p.m. CST. Pass Design and Rolling Theory, Part II Joseph Kennedy, Quad Engineering Inc. 3:15 p.m. CST

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  • ROLLING Rajagiri School of Engineering & Technology

    rolled to a thickness of 20 mm in one pass. The roll radius is 300 mm, and the rolls rotate at 100 rpm. Calculate the roll force and the power required. For annealed copper, it has a true stress of about 80 Mpa in the unstrained condition and at a true strain of 0.223, true stress is 280 Mpa. FOUR HIGH ROLLING MILL. PROBLEMS AND DEFECTS IN ROLLED PRODUCTS Porosity, Cavity, Blow Holes occurred

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