آخرین محصولات
Structure and Properties of Cast Iron DESIGNATED for …
Mukherjee, 2004; Sinha, Indimath, Mukhopadhyay, & Bhattacharyya, 2014; Martini, 1999). Rolls made of high chrome cast iron (Hi-Cr) are installed in the first three stands of the finishing group, and rolls made of indefinite (mottled) ICDP iron are installed in the last three stands (Gostev, 2008; Palit, Jugade, Jha, Das, & Mukhopadhyay, 2015).
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We Take the Hard Out of HARDFACING
Low weld costs due to high deposition rates and fast welding speeds can enhance production. 2. Consistent weld quality and a smooth surface are assured by mechanical guidance and automatic controls. 3. Semiautomatic welding with Lincore self-shielded electrodes (no granular flux or shielding gas) approaches the versatility of stick electrode ...
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PROLOGUE
TANDEM MILL Purpose: final rolling of the finished product. Type 3 stand, close coupled, Universal or duo configuration group. Roll Barrel length (uni / duo) 1000 / 2200mm Roll neck dia 501.6mm Max horizontal Roll dia 1440mm Max vertical Roll Diameter 980mm Roll Materials high-Chrome cast iron, forged steel, cast steel Max Rolling Speed 8 m/s
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Development of High-performance Continuous Pouring …
application of high chrome material having superior wearresistance to various rolls and adoption of ductile cast iron, which is one of the toughest cast irons, to the core of …
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SHVRI:KLWH&DVW,URQVDQG Microstructural …
strength. The paper is aimed to give an overview on the white cast iron alloys, and particularly high chromium white cast iron alloys, including their classifications, their …
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HCX Grinding Elements for Vertical Mills
embedded in nodular iron Hard inserts made of highly wear resistant material comprised of non-metallic refractory oxides and chromium carbides Composite casting is heat treated to obtain optimized hardness for high wear resistance and desired toughness Case Study Results: GE Design Mill with 40+% ash coal C GE type Roll
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UES A4 Datasheet
The material is basically a white iron with a chromium content of between 14% and 20%. This chromium addition together with controlled amounts of nickel and molybdenum results in a high level of hardenability. High Chrome Iron Sleeves and Rollers are heat treated to produce discontinuous, highly wear resistant iron/chromium carbides in a matrix ...
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HIGH SPEED STEEL ROLLS
bainite. These rolls have high hot strength combined with good wear resistance. Sufficient water-cooling is a must for satisfactory performance. APPLICA TION Skin Pass and Temper Mill rolls for cold rolling. Finishing rolls for wire rod and strip mills. SPHEROIDAL GRAPHITE (ACCICULAR) CAST IRON ROLLS Photomicrograph (Hs 70-75 0ShC)
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Investigation of Mechanical Properties and Wear Behavior
In the high-chrome cast iron rolls ... Behavior of Hot Rolling Mill Roll Grades H. ... High Chromium iron roll alse heat-treated at 480 °C for
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MICROSTRUCTURE AND EROSION-CORROSION …
slurry and the 19Cr iron with a higher chromium content ex-hibitedthebestwearresistance.Lessinformationcanbefound for the wear behaviour of high chromium cast irons in wet conditions with corrosive media. Relative erosion-corrosion wear rate of Fe-(15 to 30)Cr-3C has been reported [14,15] and the as-cast irons with 25-30 …
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STATE OF THE ART WORK ROLLS FOR HOT ROLLING …
In the roughing stands, conventional high chrome steel 70 – 75 ShC has been gradually replaced by new grades like carbide enhanced high chrome steel 75 – 80 ShC, ultra low …
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OK™ cement mill The most energy- efficient mill for cement …
viable means of achieving a high availability of the grinding system, optimising the grinding process and saving refurbishment costs. Hard-facing is an economical alternative to changing wear parts and is very suitable for the high chrome cast iron grinding parts used in the OK mill. The segmented type of wear liners can be hard-faced
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344 Bloor Street W, Suite 607, Toronto, ON Canada M5S 3A7
Rolling Mill Roll Manufacturing Capabilities • Steel Roll Diameter ... • 3-5% High Chrome (3-5 Cr Alloy Forged Steel), SUS304, SUS630, SUS420J2, SUS316L, SWQ1R Casting ... • Leveler roll Assembly Pohang Works • Cast Iron Work Rolls Contract (6,000tons per year)
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UES A4 Datasheet
Cast Iron Roll Specifications GRADE: High Chrome Iron Sleeves and Rollers Union Electric Åkers Union Electric Åkers Forged and Cast Rolls ™ DESCRIPTION …
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DEVELOPMENT OF PLATE MILL ROLL GRADES1
DEVELOPMENT OF PLATE MILL ROLL GRADES1 Tommy Nylen2 Michael Brandner3 Alexander Mayr4 Abstract ... High Chrome cast iron and High Chrome steel work rolls show a very uniform carbide distribution from the delivery ∅ to the end ∅ that gives these rolls almost no hardness drop at all (Figure 12). ISSN 1983-4764 732. Martensitic Matrix
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Structure and Properties of Cast Iron DESIGNATED for
The amount of retained austenite in the metallic base of the cast structure of cast iron designated for the working layer, heated to 430 °C, decreases from 11.4 per cent to 3.2 per cent due to ...
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Past, present and future of tribology in Japan
Fig.6 shows the history of decrease in work roll wear of hot strip mill realized by developing roll material from high-alloy grain cast iron to high-chrome cast iron and then to high speed tool steel in 1945~1995AD, where roll life became six times longer in the 50 years as the result of increase in wear resistance of roll material (Hashimoto ...
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RECENT TRENDS IN HOT STRIP ROUGHING MILLS: …
Cr Steel / Iron Others Cr Steel HSS Figure 1: Dominant roughing mill work roll grades in the world. Figure 2: History of HSM roughing mill work roll Grades 1950-2010. 1950 1960 1970 1980 1990 2000 ICDP / Adamite Steel/Forged steel / SG-iron/ Cast steel /Steel base Semi-HSS HSS for roughers High chrome steel 2010 690
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img.hisupplier
High chorme cast iron centrifugal rolls ... Adamite rolls Graphite steel rolls High chrome steel rolls High speed steel rolls Forged steel working rolls Forged steel intermediate rolls Forged steel back-up rolls ngroup ... Chilled Cast Iron Roll Chemical Com osition 3.00-3.40 3.00-3.40 3.00-3.40 3.00-3.40 Roll Body Hardness
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Heat and Corrosion Resistant Castings
Molybdenum improves the high-temperature creep and rupture strength by promoting stabilization of car-bides. In some instances, it also increases high-temperature corrosion resistance. It slightly increases resistance to carburization. Work to improve the creep and stress rupture proper-ties of the heat resisting chromium-nickel-iron alloys
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mscdn.metalandsteel
High Chrome Cast Iron Centrifugal Roll Chemical Com osition 3.00-3.30 3.00-3.30 3.00-3.30 0.30-1.0 0.30-1.0 0.30-1.0 Roll Necl Hardnes 32-45 HSD 32-45 HSD 32-45 HSD Code Material iron iron iron High Chrome cast HCr I centrifugal roll I High Chrome cast HCr Il centrifugal roll Il High Chrome cast HCrlIl centrifugal roll Ill Ph sical Pro ert and A
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DEVELOPMENT OF PLATE MILL ROLL GRADES1
Key words: Plate mill work roll development; Plate mill; Spun cast rolls. 1 Technical contribution to the 49th Rolling Seminar – Processes, Rolled and Coated Products, ... Notable is that ESW does not deliver any High Chromium iron rolls for the usage in Plate Mills. ISSN 1983-4764 727. HiCr Steel 41% CE HiCr Steel 9% VI 15% VIS 35%
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INTRINSIC PARAMETERS FOR FABRICATION OF …
strength ceramic beads/ grains embedded in high chrome metal. The related work done in this regard is described below: Takalani Madzivhandila [3], examined the infiltration of zirconia (ZrO 2) and alumina (Al 2 O 3) in high chrome cast iron. Investigations were done into how molten iron behaved when it came to wetting on ZrO 2 and Al 2 O 3
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Properties and applications of Ni-Hard alloys
Ni-Hard is the generic name for a family of white cast irons alloyed with nickel and chromium to give high hardness and outstanding resistance to abrasion. There are two distinct groups of Ni-Hard compositions: • Ni-Hard 1 and Ni-Hard 2 with nominally 3.3% and 2.6% carbon respectively, and 4% nickel and 2% chromium
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CHROMIUM-NICKEL CAST IRON COMPOSITION EFFECT …
Chromium-nickel-based cast irons are widely used as wear-resistant materials used for manufac-turing parts and equipment for the mining-and-smelting complex; cast iron of the Nihard class is used particularly often for manufacturing cyclones, mill linings, rolls, etc. The term "Nihard" is under-stood as white cast irons on the chromium-nickel
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Application of Electrospark Deposition Process and Modified …
Cast iron mill rolls are used because of their high wear resistance, high quality of the rolling metal surface, and their low ... Alloying and modifying of cast iron using different chemical elements is done to harden cast iron mill rolls [8, 9, 12–16]. Additional deposition of Cr, Мо, W, and V on a roll shell of a chrome–nickel cast iron ...
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Machining Guide Molybdenum Moly Alloys
grade tools of the design normally used for cast iron. Where production quantities make it desirable to use high-speed steel, shaping is preferred to milling, as sharper tools with a generous positive rake last longer and are easier to regrind. Face milling is effective for machining plane surfaces on molybdenum parts.
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v116n10a12 Grain refinement of 25 wt% high- chromium …
Grain refinement of 25 wt% high-chromium white cast iron by addition of vanadium by L.A. Mampuru*, M.G. Maruma* and J.S. Moema* "45+676 Mill liner wear is a major cost item in the mining industry and there is continuous research to prolong the life of the liners. Over the years it has become apparent that even though high-chromium white cast ...
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DEVELOPMENT OF PLATE MILL ROLL GRADES1
DEVELOPMENT OF PLATE MILL ROLL GRADES1 Tommy Nylen2 Michael Brandner3 Alexander Mayr4 Abstract ... High Chrome cast iron and High Chrome steel work rolls …
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AMK Metallurgical
nodular cast iron roll CrMo indefinite chilled nodular cast iron roll I CrMo indefinite chilled nodular cast iron roll Il Range of Application Profile material, Rods and bars, Wire rod …
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