White Iron is unalloyed cast iron with low carbon and silicon content such that the structure is hard brittle iron carbide with no free graphite.These irons are limited in application because of the lack of impact resistance and the difficulty in maintaining the structure in thicker sections.Wear Properties of Austempered Ductile Ironsdevelop product to take advantage of the performance characteristics of ADI.Wheelebrator Inc. found in a study that ADI is adequate in chain conveyors but the material is outperformed by manganese steel in blast cabinet housings and white iron in vanes and liners.A comparative test performed by the authors betweenUS4576875A - Weldable wear part with high wearA wear part with high wear and abrasion resistance combined with unlimited weldability and good mechanical strength or toughness,comprising a composite part of hard metal portion,a cast metal alloy body portion and attached thereto to joining portion,characterized in that the joining portion consists essentially of a weldable steel which by casting is bonded to the cast metal alloy body
US1910034A US419420A US41942030A US1910034A US 1910034 A US1910034 A US 1910034A US 419420 A US419420 A US 419420A US 41942030 A US41942030 A US 41942030A US 1910034 A US1910034 A US 1910034A Authority US United States Prior art keywords iron cast iron producing pearlitic carbon Prior art date 1930-01-08 Legal status (The legal status is an assumption and is not aTool-Coating Advances Continue - SMECoatings have certainly proved their worth,increasing tool life from 2 to 10 times when compared to uncoated tools,according to SECA.Newer coatings are achieving ever-higher maximum operating temperatures and hardness,and are increasingly tuned for specific properties,such as abrasive wearThe Inuence Of Microstructure On The Corrosion AndArnold et al.(1998) investigated the wear of high chromium white iron weld overlays in alumina plants.This investigation found that the wear of the weld overlays was due to two mechanisms,abrasive-erosive wear and corrosive wear.The independent contributions of each of these wear mechanisms and any synergistic effects to the total wear
2.8.2 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 casePinch Rolls Xtek,Inc.The outer working layer of this blend is a white-iron based alloy enriched with modest amounts of Chromium,Molybdenum,and Nickel.The working layer alloy is specially formulated to exploit the material attributes of pick-up resistance,wear resistance and corrosion resistance.The material is supplied at 67-72 HSC (50-54 HRC).
Developing 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 ,2019Metallurgy of Rolling mill Rolls IspatGuruNov 13,2019 Developing a graphitic white iron for abrasive wear#0183;The cast iron grades varied from mild-hard,half-hard,and clear-chill.In the clear-chill rolls the barrel had a white iron (free from graphite) layer while the roll core and the neck were of grey iron.Later cast steel rolls were developed with a C content of upto 2.4 %,with and without graphite.Metallurgical Aspects of HIGH- CHROMIUM WHITEThe carbides in high-chromium iron are very hard and wear resistant but are also brittle.In general,wear resistance is improved by increasing the amount of carbide (increasing the carbon content),white toughness is improved by increasing the proportion of metallic matrix (reducing the carbon content).
While low-alloy white iron castings,which have alloy content below 4%,develop hardnesses in the range of 350 to 550 HB,the high-alloy irons range in hardness is from 450 to 800 HB.Specification ASTM A 532 covers the composition and hardness of the abrasion-resistant white iron grades.Many castings are ordered according to these specifications.Heat treatment effect on microstructure,hardness and wear The research on optimization of heat treatments to improve abrasive wear properties of HCCI is insufficient,so effect of heat treatments on the microstructure,hardness,toughness,and wear resistance of Cr26 HCCI is investigated to determine the optimal heat treatment process for HCCI.A series of heat treatments are employed.Heat treatment effect on microstructure,hardness and wear Aug 16,2014 Developing a graphitic white iron for abrasive wear#0183;The research on optimization of heat treatments to improve abrasive wear properties of HCCI is insufficient,so effect of heat treatments on the microstructure,hardness,toughness,and wear resistance of Cr26 HCCI is investigated to determine the optimal heat treatment process for HCCI.A series of heat treatments are employed.
EN 12513,White Cast Iron,Abrasion Resistant Cast Iron White cast irons are widely used in abrasive wear applications involved in the crushing,grinding,milling and handling of abrasive materials such as minerals and ores,both dry and as slurries.Ductile Iron Data - Section 3 - Part 2The presence of 8-11 volume per cent graphite provides both the graphitic lubrication and oil retention essential to some wear applications.Pearlite,consisting of very hard lamellar carbide in a soft,ductile matrix of ferrite,exhibits good wear resistance under wearDeveloping a graphitic white iron for abrasive wear Oct 15,2019 Developing a graphitic white iron for abrasive wear#0183;Five flake graphite containing white irons with different chromium and carbon contents (graphitic white irons) were designed,cast and investigated by the authors to solve this problem.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.
Nov 05,2015 Developing a graphitic white iron for abrasive wear#0183;Its superior abrasion resistance is due,in large part,to the high volume percentage of graphite which acts as a graphitic lubricant.In abrasive wear mechanisms,austenitic ductile iron grades offer great wear resistance as well as improved strength.ADI grades of ductile iron are made by alloying the metal and heat treating.Cited by 2Publish Year 2019Author Jie Wan,David C.Van Aken,Jingjing Qing,Thomas J.Yaniak,Thomas E.Clements,Mingzhi XuDeveloping a graphitic white iron for abrasive wear Five flake graphite containing white irons with different chromium and carbon contents (graphitic white irons) were designed,cast and investigated by the authors to solve this problem.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.Cited by 2Publish Year 2019Author Jie Wan,David C.Van Aken,Jingjing Qing,Thomas J.Yaniak,Thomas E.Clements,Mingzhi XuDeveloping a graphitic white iron for abrasive wear ; Edited by Dr.Zili Li,Prof.Mats Berg,Dr.David Fletcher,Dr.Paul Meehan and Dr.Alfredo N Developing a graphitic white iron for abrasive wear#250; Developing a graphitic white iron for abrasive wear#241;ez
White Iron / High Alloy White 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 ironCast Iron Machine DesignWhite 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 toCarbidic Ductile IronCarbidic Ductile IronThought process behind making Carbidic Ductile Iron 1) This iron is basically a compromise between making a Ductile Iron Alloy and a White Iron or Ni-hard Alloy.2) M th ht th t h t k l D til2) My thought was that you have to make normal Ductile Iron,but modify your process to stabilize the desired %
We develop and produce advanced wear-resistant materials for extremely abrasive conditions in Mining,Energy,and Construction Industries.Our proprietary Tungsten Carbide Overlay (WCO),High Chrome White Iron (HCWI),Silicon Carbide Ceramic (SiC),and Chrome Carbide Overlay (CCO) provide superior wear protection for your equipment.CN104195420A - High-chrome wear-resistant cast iron The invention discloses a high-chrome wear-resistant cast iron material and a heat treatment method.The high-chrome wear-resistant cast iron material is prepared from iron as a main raw material,and carbon,silicon,manganese,sulphur,phosphorus,chrome,molybdenum,nickel and copper as auxiliary materials in manners of melting and casting after preparation.Analysis of the structure of castings made fromfrom chromium white cast iron resistant to abrasive wear D.Kopyciski AGH-University of Science and Technology,Faculty of Foundry Engineering,Krak Developing a graphitic white iron for abrasive wear#243;w,Poland Corresponding author.E-mail address [email protected] Received 29.06.2009; accepted in revised form 03.07.2009 Abstract
The abrasive flows from the hopper by gravity to a feed funnel interiors which permit greater efficiency of operation.workpiece.considerable wear --especially the wheel components and machine resistant cast iron and are designed for easy replacement.Heavy In general,abrasiveA Ball-on-Block Impact-Spalling Wear Test and ResultsThe abrasive wear that occurs during 16,19)~ and white cast iron in particular (7,- 9,-- 11-12,- 15,- 17- - 181,to cite a few.1; recent decades,the impacr resistance and the abrasive wear resistance of Ni-Cr and Cr-Mo white irons have been improved. bers of impacts that can develop large compressive stresses near the surface*12345NextControlled graphitization as a potential option for Effect of heat treatment on the microstructure and resistance to abrasive wear has been studied in an unalloyed white iron used for manufacturing cylindrical pebbles used as grinding media by the cement and other industries.Heat treatment comprised holding at 800 Developing a graphitic white iron for abrasive wear#176;C,850 Developing a graphitic white iron for abrasive wear#176;C,900 Developing a graphitic white iron for abrasive wear#176;C,and 950 Developing a graphitic white iron for abrasive wear#176;C for 30,60,90,120,and 180 minutes followed by oil quenching.Heat treatment in general
In fact,wear mechanisms of these materials mainly depend on the attack angle,while wear mechanisms of nodular cast iron are probably governed by the presence of graphitic phase.The two bodies abrasive wear of SG iron can be described as follows.