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heat treatment high cr cast irons patent

CN102899469B Heat-treatment method of high-chromium wear

The invention discloses a heat-treatment method of high-chromium wear-resistant white cast iron Cr28. According to the invention, high-chromium wear-resistant white cast iron Cr28 is heated to 1000-1050 DEG C; the white cast iron Cr28 is heated and the temperature is maintained for 1.5-3h; the white cast iron Cr28 is air-cooled to room temperature; the white cast iron Cr28 is heated to 710-730

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Heat Treatment High Cr Cast Irons Patent

Heat Treatment High Cr Cast Irons Patent. As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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Microstructure and properties of high chromium cast irons

Microstructure and properties of high chromium cast irons: Effect of heat treatments and alloying additions. treatment. Cr is a well established carbide former and. US patent no. 5 183 518

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Ferritic high-silicon cast irons Google Patents

Cast irons contain (1) carbon and silicon at a carbon equivalent of 4.35 to 4.95; (2) transition metals of Groups 5 and 6 in the Periodic Table (Cr, Nb, Mo, Ta, W, and V) of which the total contents are no greater than about 3%; and (3) minor elements such as up to about 0.050% phosphorus (P), and up to about 0.080% total residual of magnesium (Mg) and REM (rare earth metals), and (4) the

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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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Microstructure and properties of high chromium cast irons

Microstructure and properties of high chromium cast irons: Effect of heat treatments and alloying additions. treatment. Cr is a well established carbide former and. US patent no. 5 183 518

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Ferritic high-silicon cast irons Google Patents

Cast irons contain (1) carbon and silicon at a carbon equivalent of 4.35 to 4.95; (2) transition metals of Groups 5 and 6 in the Periodic Table (Cr, Nb, Mo, Ta, W, and V) of which the total contents are no greater than about 3%; and (3) minor elements such as up to about 0.050% phosphorus (P), and up to about 0.080% total residual of magnesium (Mg) and REM (rare earth metals), and (4) the

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US3013911A Malleable cast iron compositions Google Patents

US3013911A US831947A US83194759A US3013911A US 3013911 A US3013911 A US 3013911A US 831947 A US831947 A US 831947A US 83194759 A US83194759 A US 83194759A US 3013911 A US3013911 A US 3013911A Authority US United States Prior art keywords casting iron cast iron cast cooling Prior art date 1953-11-18 Legal status (The legal status is an assumption and is not a legal

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Effect of heat treatment on wear and corrosion behavior of

The abrasive wear and corrosion behavior of as-cast, heat-treated and tempered high chromium white cast iron was studied, and the results were evaluated by means of microstructure, hardness, surface roughness and corrosion resistance. The samples were subjected to wear on the ball-on-flat tribometer test machine under different loads.

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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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High Chromium White Irons for Mining, Grinding and

heat treatments on the microstructure of high-chromium cast iron: A microscopy examination approach. J Mater Eng Perform 18(8): 1078 -1085. 6. Efremenko V, Shimizu K, Chabak Y (2013) Effect of destabilizing heat treatment on solid-state phase transformation in high-chromium cast irons. Metall Mater Trans A 44: 5434-5446. 7.

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Heat Treatment in High Chromium White Cast Iron Ti Alloy

Apr 29, 2014· The influence of heat treatment on microstructure and mechanical properties of high chromium white cast iron alloyed with titanium was investigated. The austenitizing temperatures of 980°C and 1150°C for 1 hour each followed by tempering at 260°C for 2 hours have been performed and the effect of these treatments on wear resistance/impact toughness combination is reported.

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CA2149010A1 Abrasion/erosion resistant Google Patents

An abrasion/erosion resistant wear alloy suitable for use in high or low stress applications having potential exposure impact loading which provides both good wear characteristics gained from a large volume of high hardness carbides in a tough, stable austenitic matrix which provides requisite ductility and which has the additional advantage of being work hardenable during service.

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Microstructural evaluation and high-temperature erosion

Apr 30, 2019· In this present study, 8 specimens high chromium cast iron (consisting 12, 17, 22, and 27 wt%Cr) were used as materials target. 50 kg raw material on every kind of specimen was melted in high frequency induced furnace then poured it into a Y-block sand mold and the ingots were cut with dimension 50 mm × 10 mm × 10 mm as drawn in Fig. 1.

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heat treatment of high chrome cast irons

Feb 15, 2016· high chrome cast iron heat treatment,Austenite during Subcritical Heat Treatment of High Cr Cast Irons with,high, chrome,know more Patent US5183518

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Cast iron with improved oxidation resistance at high

FIELD OF THE INVENTION. The present invention relates to a cast iron with improved oxidation resistance at high temperature. More particularly, it relates to an iron cast comprising a cast iron as a major component, C, Si, Mn, P, S, Cr, Mo and Ni, where the cast iron provides excellent heat resistance and oxidation resistance at high temperature, thus being suitable for an exhaust manifold for

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

Dec 12, 2018· Common Heat Treatment for the Specific Cast-Iron Types. 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.

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Microstructural Modifications of As-Cast High-Chromium

Microstructural Modifications of As-Cast High-Chromium White Iron by Heat Treatment A.E. Karantzalis, A. Lekatou, and H. Mavros (Submitted June 5, 2008) 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 M 7C

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Optimizing heat treatment and wear resistance of high

Jul 29, 2011· In the present work, a methodology was developed combining the practical knowledge on the production technology of high Cr cast iron castings with the use of CT to guide the alloy and heat treatment selection according to the requirements of industrial applications. 2. Applying CT to high Cr cast irons 2.1. Steps of the procedure

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