Oct 15,2019·Designing a novel graphitic white iron for metal-to-metal wear systems. Enhanced thermal diffusivity was obtained via graphite addition. Enhanced abrasive wear resistance was obtained via graphite addition. Established numerical models to correlate the chemistry and phase constituents to thermal diffusivity and wear resistance. results for this questionHow to increase the hardness of gray iron?How to increase the hardness of gray iron?To increase the hardness of gray iron for abrasive-wear applications,alloying elements can be added,special foundry techniques can be used,or the iron can be heat treated.Gray iron can be hardened by flame or induction methods,or the foundry can use a chill in the mold to produce hardened,white-iron surfaces.Cast Iron Machine Design results for this questionWhat makes a pearlitic grade of cast iron?What makes a pearlitic grade of cast iron?Pearlitic cast-iron grades consist of alternating layers of soft ferrite and hard iron carbide.This laminated structure -- called pearlite -- is strong and wear resistant,but still quite machinable.As laminations become finer,hardness and strength of the iron increase.Lamination size can be controlled by heat treatment or cooling rate.Cast Iron Machine Design
Aug 12,2020·Within the five graphitic white irons developed,alloy 9Cr showed the best wear resistance for both abrasive wear and adhesive wear.Moreover,the graphite contribution factor in the independent variable is 2.66 in the adhesive wear model (Figure 13 b) and 2.33 in the abrasive wear model (Figure 2 b),which means that graphite addition has a stronger effect on reducing the adhesive wear rate than abrasive wearAlloy Cast Irons IspatGuruMar 19,2016·White cast irons are usually very hard,which is the single property maximum responsible for their outstanding resistance to abrasive wear.White cast iron can be produced either throughout the section (mainly by adjusting the composition) or only partly inward from the
Nov 15,2002·White iron White iron is produced by chilling selected areas of a casting in the mold,which prevents graphitic carbon from precipitating out.Both gray and ductile iron can be chilled to Cast Irons Specifications Engineering360White cast irons have very high levels of additional alloying elements such as chromium that increase hardness,corrosion resistance,and wear properties.The alloying additions promote the formation of alloy carbides.Chromium carbides are harder and more wear resistant than ironCited by 1Publish Year 2021Author Jie Wan,David C.Van Aken,Jingjing Qing,Mingzhi XuEstimated Reading Time 11 minsJie WAN Engineer Doctor of Philosophy Caterpillar Heat induced adhesive abrasion failure has often been found in metal-to-metal wear application,hence interconnected flake graphite networks were deliberately generated in a white iron to increase
Request PDF Developing a graphitic white iron for abrasive wear application Thermal and wear properties Frictional heat generated in high speed sliding and rolling wear generates a Developing a Graphitic White Cast Iron Request PDFDeveloping a Graphitic White Cast Iron. the authors designed and produced the first generation of graphitic white iron [20 Developing a graphitic white iron for abrasive wear application Estimated Reading Time 13 mins(PDF) Designing a Novel Graphitic White Iron for Metal-to To optimize the thermal conductivity and wear resistance,five alloys with different chromium and carbon contents were designed,produced,and investigated to develop the first generation of
This study examined the introduction of flake graphite into a white iron to increase the net thermal diffusivity,and to improve the abrasive wear resistance.Thermal diffusivity was measured Heat induced adhesive abrasionfailure has often been found in metal-to-metal wearapplication,hence interconnected flake graphite networks were deliberately generated in a whiteironto increase its thermal conductivity,which is called graphiticwhiteiron.An alloy with 11.03wt.% Cr was cast and investigated.Jie WAN Engineer Doctor of Philosophy Caterpillar Was this helpful?People also askWhat are the two modes of abrasive wear?What are the two modes of abrasive wear?The two modes of abrasive wear are known as two-body and three-body abrasive wear.Two-body abrasive wear occurs when one surface (usually harder than the other) cuts material away from the other surface; this mechanism very often changes to three-body abrasion as the wear debris then acts as an abrasive between the two surfaces.Three-Body Abrasive Wear - an overview ScienceDirect TopicsHigh temperature hardness of steels and iron-based alloys Developing a graphitic white iron for abrasive wear application Thermal and wear properties J.Wan ,D.C.Aken ,J.Qing ,Thomas John Yaniak ,Thomas E.Clements ,Mingzhi Xu Materials Science
Dec 18,2020·Importance of Nanomaterials in Engineering Application.1.Department of Chemical Engineering,Faculty of Engineering and Science Curtin University Miri Malaysia.2.Graphene Advanced 2D Materials Research Group (GAMRG),School of Science and Technology Sunway University Petaling Jaya Malaysia.3.Jingjing Qing - Google ScholarDeveloping a graphitic white iron for abrasive wear application thermal and wear properties J Wan,DC Van Aken,J Qing,TJ Yaniak,TE Clements,M Xu Wear 436,202967 ,2019Reporting Results - CambridgeA Comparison of Adhesive Wear with Three-Body Abrasive Wear Characteristics of Graphitic White Irons Designed for Metal-to-Metal Wear Systems.International
·The classical ICDP is characterized by conjoint precipitation of graphite and carbides.This grade contains iron-rich primary carbides and free graphite in a tempered martensitic matrix (Figure 3).This specific microstructure (free graphite and carbides) induces good thermal fatigue resistance[4,5] and good but limited wear and oxidation resistances[4,5] because hardness is limited due the STUDY OF SG IRON AND ITS TRIBOLOGICAL BEHAVIOUR2.8.2 Abrasive wear 21 2.8.3 Adhesive wear 22 Nodular cast iron (SG iron) shows the highest wear resistance probably due to its graphite morphology which comprises three phases ferrite (white),pearlite (grey) and graphitic spheroid (black).In this caseSelectedWorks - David C.Van AkenDeveloping a Graphitic White Iron for Abrasive Wear Application Thermal Wear (2019) Jie Wan,David C.Van Aken,Jingjing Qing,Thomas J.Yaniak,et al.Frictional heat generated in high speed sliding and rolling wear generates a significant amount of heat.
Abrasive wear can occur when the hardness of the abrasive is 1.01.6 times that of the material.No abrasive wear is expected below this range. All the grooved material need not be removed by cutting action.Part of the deformed material can form a wedge on the surface. The three-body abrasive wear is of industrial importance but less investigated.This is partly because of the ill-defined nature of this wear.US4119459A - Composite body consisting of cementedA metallic body in which great wear resistance is coupled with excellent mechanical strength and toughness is composed of sintered cemented carbide particles in a matrix of graphitic cast iron-base alloy,the content of carbon plus other constituents known to be equivalent to carbon in their influence on the cast iron amounts to 2.5 - 6.0%,preferably 3.5 - 5.0%.