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  • What is Chrome White Iron – ASTM A532? |

    Understanding Chrome White Iron Posted by Penticton Foundry on September 22, 2016. In several of our datasheets, such as our datasheet on ASTM A532 Class II Type D, we get specific about each alloy and its mechanical and physical properties.In fact, to see each datasheet click on the links on our chrome white iron webpage.. This blog, in contrast, contains a generic overview of chrome white iron.

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  • Heat treatment process of the high chrome cast

    The microstructure of high chromium white cast iron grinding ball as-cast and after heat treatment was observed by metallographic microscope. The sample of 10mm* 10 mm* 8 mm in size at the center of the grinding ball was cut by weld and polished with 200 # to 1500 # metallographic sandpaper.

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  • Research Article Heat Treatment in High Chromium White

    e ects of both Ti-additions and heat treatment conditions on microstructure as well as abrasion resistance and impact toughness. 2. Experimental Work e chemical composition of the studied high Cr-Mo white iron is given in Table . Sulphur and phosphorous contents werebelow. %. ealloysweremeltedinamedium frequency induction furnace.

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  • annealing and re-hardening ASTM A532-93 Class

    My question is, can high chrome cast iron be "heat treated" to re-harden to 500 HB after annealing or even tempering to 400? Some of the curves in the "Abrasion Resistant Cast Iron Handbook" suggest some high chrome irons can end up with vastly different hardnesses even after tempering to the same temperature, depending on retained austenite.

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  • Heat Treating of High-Alloy White Irons :: Total Materia

    Heat Treatment or Nickel-Chromium White Irons. Nickel-chromium white iron castings are given a stress-relief heat treatment because, properly made, they have a martensitic matrix structure, as-cast. Tempering is performed between 205 to 260°C (400 to 450°F) for at least 4 h.

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  • Effect of Heat Treatment on Microstructure and Mechanical

    wear performance of high chromium white cast iron. Quenching, seeding and micro-alloying can, to a limited extent, increase the wear resistance, but this is best achieved by heat treatment in the solid state. The methods for producing high chrome iron casting include double pour, continuous pour and centrifugal castings [1, 3].

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  • Heat Treatment of Cast Irons | 2018-12-12 | Industrial Heating

    12/12/2018· High-alloy (e.g., high chromium, high nickel-chromium) white irons can be heat treated. For example, nickel-chromium white-iron castings are given a stress-relief heat treatment because, properly made, they have an as-cast martensitic matrix structure. Tempering is performed between 205°C (400°F) and 260°C (450°F) for at least 4 hours.

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  • Heat Treatment of White Cast Irons | Metallurgy

    This requires heat treatment involving air-quenching from high temperature, following by tempering at 200°C. High chromium (25% Cr and 28% Cr) white irons have the best combination of excellent abrasion resistance and toughness (to bear the repeated heavy impact loading), because these have hard but discon­tinuous M 7 C 3 eutectic carbides (low Cr-alloys have relatively softer and continuous

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  • Steels - (High Chromium Steels) Stainless Steels

    High carbon high chrome steels are heat treatable as a consequence of the higher carbon content, and are known as martensitic stainless steels (e.g. 410, 416). They do, however, exhibit lower corrosion resistance due to chromium depletion of the oxide film.

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  • Microstructure and wear resistance of high chromium cast

    a hypereutectic high chromium white iron containing >30wt.% Cr and >4wt.% C was investigated in detail in both as-cast and heat-treated states. The properties related to the service performance of the HCCIs containing niobium, namely the abrasion resistance in

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  • Heat treatment process of the high chrome cast

    The microstructure of high chromium white cast iron grinding ball as-cast and after heat treatment was observed by metallographic microscope. The sample of 10mm* 10 mm* 8 mm in size at the center of the grinding ball was cut by weld and polished with 200 # to 1500 # metallographic sandpaper.

    Read More +
  • Heat treatment and properties of iron and steel

    temperingandcoldtreatment.Chemicalcompositions,heattreatments,andsome properties and usesarepresentedforstructural steels,toolsteels,stainless and heat- resistingsteels, precipitation-hardenable stainlesssteels and nickel-maraging steels.

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  • annealing and re-hardening ASTM A532-93 Class

    My question is, can high chrome cast iron be "heat treated" to re-harden to 500 HB after annealing or even tempering to 400? Some of the curves in the "Abrasion Resistant Cast Iron Handbook" suggest some high chrome irons can end up with vastly different hardnesses even after tempering to the same temperature, depending on retained austenite.

    Read More +
  • Heat Treatment Technology of High Chromium Iron Castings

    As an anti-wear material, High Chrome White Iron Castings have not only necessary strength and toughness, but also their hardness is the most important quality index. Some high chromium iron castings can obtain the required hardness in the as-cast state, but most of them need heat treatment to meet the hardness requirements.

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  • high chrome heat treatment

    high chrome heat treatment - jrietdijk. high chrome cast iron heat treatment separation. mitak high chrome white irons mis engineering (pty) ltd mitak handles the entire manufacturing process at a single site, ensuring total quality oversight. this includes pattern making, get p.

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  • (PDF) Microstructural Modifications of AsCast

    The initial as-cast microstructure of a high-chromium (2.35% C, 18.23% Cr) white cast iron consisting of primary austenitic dendrites and a eutectic mixture of M7C3 carbides/austenite was extensively modified by four different heat treatments: H.T.A:

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  • Microstructural Characteristics and Mechanical Properties

    mechanical properties of high Cr white cast iron alloys are oresented. Keywords: High-Cr WCI alloys, microstructural characterization, abrasive wear resistance, alloying additions, heat treatment, mechanical properties. INTRODUCTION . The high alloy white irons are primarily used for abrasion

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  • Effect of Heat Treatment on Microstructure and Mechanical

    wear performance of high chromium white cast iron. Quenching, seeding and micro-alloying can, to a limited extent, increase the wear resistance, but this is best achieved by heat treatment in the solid state. The methods for producing high chrome iron casting include double pour, continuous pour and centrifugal castings [1, 3].

    Read More +
  • Metallurgical Aspects of HIGH- CHROMIUM WHITE IRONS

    CLASSES OF HIGH-Cr IRONS Thechromium-molybdenumirons(classIIof ASTM A532)contain11 to23%Cr andup to 3.5% Mo and can be supplied either as-cast with an austenitic or austenitic-martensitic matrix, or heat treated with a martensitic matrix microstructure for maximum abrasion resistanceandtoughness.

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  • Study on the heat treatment process of high

    High chromium cast iron (high chrome cast iron)'s heat treatment process is very important for the casting's machnical character.

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high chrome white iron heat treatment

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