1-20 of 37 Search Results for

Hot-strip mill

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001532
EISBN: 978-1-62708-232-7
... Abstract Work rolls made of indefinite chill double-poured (ICDP) iron are commonly used in the finishing trains of hot-strip mills (HSMs). In actual service, spalling, apart from other surface degeneration modes, constitutes a major mechanism of premature roll failures. Although spalling can...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001849
EISBN: 978-1-62708-241-9
... ) 10.1361/154770205X76349 5. Ray A. , Prasad M.S. , Barhai P.K. , Mukherjee S.K. : Metallurgical investigation of prematurely failed hot-strip mill work-rolls: some microstructural observations . J. Fail. Anal. Preven . 4 ( 3 ), 58 – 66 ( 2004 ) 10.1007/s11668-996-0016-8...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001245
EISBN: 978-1-62708-232-7
... the strip. The fracture had a fine-grained structure. Figure 3 shows the roll after etching of the surface with 5% Nital. The dark strips are tempered structure and prove that the roll became hot in places. This probably happened 1 through sliding of the material to be rolled 1 . But it is also entirely...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001632
EISBN: 978-1-62708-234-1
... cells at the LANL CMR building are equipped with an in-cell milling machine, a band saw, optical microscopes, microhardness tester, tensile testing machine, sample polishing equipment, sample etching equipment, and a variety of specialized hardware for handling complex components. The hot cells date...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001535
EISBN: 978-1-62708-232-7
...-intermediate drive roll is similar to that of a hot-work tool steel of the H13 type ( Ref 3 ). Unlike Sendzimir mill work rolls, which are usually made from high carbon-high chromium varieties of D2 (1.25 wt% C, 12 wt% Cr) or D4 (2.25 wt% C, 12 wt% Cr) type cold-work tool steels ( Ref 4 ) or of tungsten...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... with elevated temperature—for example, at the hot-test parts of heat-exchanger surfaces—the nodule that is formed is hard and is difficult to remove until it has attained considerable size. The temperature may be sufficient to evaporate some of the liquid within the nodule; the corrosive action then becomes...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... such as bar, plate, tube, sheet, and wire are worked from ingot or other cast forms) or secondary metalworking (where mill products are further formed into finished products by hot forging, cold forging, drawing, extrusion, straightening, sizing, etc.). These metalworking operations have a twofold purpose...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
.... Recommendation It is recommended that proper precautions be taken during overhauling of this bushing in order to avoid assembly error, which leads to the phenomenon of hot shortness/lack of lubrication. Example 3: Failure Analysis of Journal Bearings Used in Sugar Mills Premature failure of journal...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... analysis revealed that the cast alloy 400 coupling had a silicon content of 1.97%, whereas the wrought alloy 400 piping had a silicon content of 0.10%. Castings of high-silicon alloy 400 generally have poor weldability and are often hot short, or sensitive to cracking in the weld HAZ. Fissures in the cast...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
... that follows an increase in temperature. The features characteristic of crevice-corrosion attack are: Nodules will generally form on the corroded surfaces. The nodules will be hard if formed on a hot surface, but may be softer if formed on a cold surface. The composition of the nodules varies from...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... operations are also classified as either primary metalworking (where mill forms such as bar, plate, tube, sheet, and wire are worked from ingot or other cast forms) or secondary metalworking (where mill products are further formed into finished products by hot forging, cold forging, drawing, extrusion...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003567
EISBN: 978-1-62708-180-1
... being substituted for chemical processing steps in order to reduce water-treatment requirements and fulfill regulatory standards. High-Temperature Processes Many chemical processes take place at elevated temperatures and involve corrosive wear. A process such as coal gasification involves hot...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001807
EISBN: 978-1-62708-241-9
... , 1985 ) 20. Gai B. , Elastic Mechanic ( Harbin Institute of Technology Press , Harbin , 2009 ) 21. Dou P. , Li Y. et al. , Finite element analysis of contact stresses on the backup roll of CVC hot rolling mills . J. Tsinghua Univ. (Sci&Technol) 45 , 1668 – 1671...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
.... The inboard seals and the stage next to the coupling were destroyed. Due to the type of failure, the plant initiated an alignment study. Dynalign bars were mounted between the pump and the turbine driver to determine the amount of movement from the hot to cold condition while the unit was in operation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
..., but not welded, by working the metal. Seams seldom penetrate to the core of bar stock. Seams may cause additional cracking in hot forging and quench cracking during heat treatment. Oxides in a seam can be the result of exposure to elevated temperatures during processing. Seams are sometimes difficult to detect...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... at the weld toe Cracks—hot or cold, longitudinal or transverse, crater and at weld toe Gas porosity Arc strike Spatter Backing piece left on: failure to remove material placed at the root of a weld joint to support molten weld metal Subsurface features that are causes for rejection...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001839
EISBN: 978-1-62708-241-9
... of 2.8 mm thickness had been processed through hot rolling and subsequently, solution annealed, shot blasted and pickled in a conventional manner to confer them with No. 1 surface finish. The coils had been subjected to routine inspection and testing before dispatching the lot to the customer’s...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... in this article. It is important that the rolling operation follow, rather than precede, heat treatment. The head-to-shank fillet is another site for fatigue fracture of tension-loaded fasteners. Several techniques can be used to avoid failure at this location. The heads of most fasteners are formed by hot...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006836
EISBN: 978-1-62708-329-4
... is comprised of (a) aluminum and (b) magnesium. Scan was taken from the image in Fig. 2(b) Example 3: Preexisting Hot Mill Rolling Crack Figure 4 shows a surface flaw deep enough to cause a coil spring to fail early; this surface imperfection was inherited from the raw material ( Ref 5...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... chilled and thickened so that it cannot enter very fine openings. If the part or the penetrant is too hot, the volatile components of the penetrant may evaporate, reducing the sensitivity. After the penetrating period, the excess penetrant remaining on the surface is removed. An absorbent, light-colored...