Hot rolling and rolling defects - nptel

force, we can reduce roll diameter, or reducing the friction. ... In rolling, tensile force in longitudinal direction is applied at the entry section through a feeder .... Mill spring is a defect in which the rolled sheet is thicker than the required thickness...

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development and application of hss rolls for hot strip mills

quality and advances in rolling mill productivity. Rolling mill rolls play .... Roll inspection and defect detection has a greater roll in performance. 15th IAS Rolling...

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ROLLS FOR ROLLING MILLS

The first in the USSR rolls for hot-rolling mills were produced from ingots weighing up to ... cold mill rolls, re-tooling and modernization of the production plant were carried out by the .... martensite and other macro- and microstructural defects.

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Patent US6625515 - Roll defect management process - Google ...

Sep 23, 2003 ... c) classifying said mill roll defect in accordance with predetermined .... of various types of rolls used in rolling flat strip products by detection,...

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Using NDT Methods for Inspection Rolls of Cold Roll Mill - NDT

Apr 20, 2012 ... The rolls used in Rolling Mill included different material and size, such ... The NDT inspection methods include detection of surface defects and...

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Review on cold rolling mill roll deformation | Engineering Journal ...

Keywords- Cold Rolling Mill Rolls; Thermal Breakages; Spalling. .... The quality check at every stage is required to produce a roll which can be used in rolling mill. ... speed of rolling mill and according this the main causes for sheet defect are...

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Rolling (metalworking) - Wikipedia

In metalworking, rolling is a metal forming process in which metal stock is passed through one ... Roll stands holding pairs of rolls are grouped together into rolling mills that ... 4.1 Configurations; 4.2 Tandem mill. 5 Defects. 5.1 Flatness and shape ... With the advancement of technology in rolling mills the size of rolling mills...

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Case study of severe strip breakage in rolling mill of Thin Slab ...

In this paper, a case of severe strip breakage in rolling mill of Thin Slab ... Rolling of defective strips in the final stands may also affect work roll surfaces with an...

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rolls lifeline of rolling mills - IIM - Delhi

ROLLS. LIFELINE OF ROLLING MILLS. Gireesh Madan. Manager (Monitoring ... gradually through a pair of revolving rolls ( plain or ... DEFECTIVE MATERIAL.

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Rolling of metals - Suranaree University of Technology

understanding of load calculation in rolling processes. • Finally identification of defects occurring during and its solutions are included. ... Tube mill roll. Universal roll. Ring rolls. • Ring rolls are used for tube rolling, ring rolling. • Ring rolls are...

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