high chrome cast iron heat treatment

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.

Author: 崔泓飞, 黄继康

Heat treatment process of the high chrome cast iron ...

The hardness values of high chromium white cast iron after as-cast and heat treatment were measured and compared to study the effects of composition and heat treatment process on the hardness of the material. Wear resistance is evaluated by the amount of wear under the same wear condition.

Heat Treating ASTM A532 | Chrome White Iron | Penticton ...

Jan 16, 2018 · Case Study: Read this case study for a specific example of chrome white iron outperforming AR plate. Microstructure Notes No article on heat treating ASTM A532 would be complete without taking a look at its microstructure. The high level of chromium in high chrome white iron prevents the formation of graphite in the microstructure.

High-chromium (22-34 per cent) Cast Iron Alloys and Their ...

on the surface of cast pieces, which adhere very well to the metal. Due to this, chrome irons are resistant to the action of heat and various corroding media7. Above 16 per cent Cr, an oxide layer type FcO.Cr20 , forms on the iron surface, which strongly increases the resistance to heat

Analysis of the High Chromium Cast Iron Microstructure ...

different hardening temperatures on the properties of high chromium cast iron were compared. The study led to systemize the literature data of the parameters of heat treatment of high chromium cast iron, and optimal conditions for heat treatment was proposed for

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.

Alloy data sheet Pliant25 Chrome White Iron | Penticton ...

Jan 26, 2016 · Pliant25 ASTM A532 Class III Type A. Pliant25 is a unique high chrome white iron that has been perfected by Penticton Foundry. Our engineered chemistry together with our proprietary heat treatment allows us to soften this alloy to the point where we can then drill and tap holes, as well as broach keyways. After machining, we can heat treat the casting to harden this alloy to a minimum of

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

Heat Treating of High-Alloy White Irons Abstract: ... In the heat treatment of any white cast iron, care must be taken to avoid cracking by thermal shock; never place the castings in a hot furnace or otherwise subject them to rapid heating or cooling. The risk of cracking increases with the complexity of the casting shape and section thickness.

Alloy data sheet high chrome white iron 25% | Penticton ...

Jan 13, 2016 · ASTM A532 Class III Type A. The 25% Cr alloy is the most common high chrome white iron poured at Penticton Foundry. This alloy has great abrasion resistant properties especially against gouging, grinding and scratching. 25% Cr material can be machined to meet tighter tolerances like those found in pump and piping type castings.

Heat Treatment of Cast Irons - Heat Treat Doctor

transformations on which cast iron heat treatments are based are similar to those applied to steels. Heat Treatment of Cast Irons Daniel H. Herring, The HERRING GROUP, Inc., Elmhurst, Ill. Diamond Platinum Rhenium Palladium Germanium Beryllium Indium Hafnium Silver Cobalt Zirconium Titanium Tin Nickel Magnesium Copper Aluminum Iron 1 10 100 103 ...

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.

Microstructural Modifications of As-Cast High-Chromium ...

Microstructural Modifications of As-Cast High-Chromium White Iron by Heat Treatment. Authors; ... The effect of each heat treatment on the hardness of the alloy was correlated with the attained microstructure. ... J.T.H Pearce, D.W.L Elwell (1986) Duplex Nature of Eutectic Carbides in Heat Treated 30% Chromium Cast Iron, J. Mater. Sci.

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].

Alloy data sheet high chrome white iron 25% | Penticton ...

Jan 13, 2016 · ASTM A532 Class III Type A. The 25% Cr alloy is the most common high chrome white iron poured at Penticton Foundry. This alloy has great abrasion resistant properties especially against gouging, grinding and scratching. 25% Cr material can be machined to meet tighter tolerances like those found in pump and piping type castings.

Alloy Comparison Chart Including Chrome White Iron ...

Sep 24, 2015 · High Chrome White Iron (ASTM A532) High chrome white iron is composed of Carbides and Martensite (among the hardest phase of iron alloys). This combination makes chrome white iron exceptionally wear-resistant and strong, but gives it virtually no toughness. When solving wear-related problems chrome white iron should be one of the first ...

Heat treating cast iron - practicalmachinist

Feb 08, 2003 · I agree with the idea of case hardening on cast iron. To do any heat treat you should know the carbon content and other ingredients. Nitriding, induction hardening, hard chrome plating are all ways of treating parts like cams that have to be abrasion resistent.

Effects of Heat-Treatment on the Microstructure and Wear ...

The variations of microstructure and mechanical properties of a high-chromium cast iron for rolls were studied from as-cast to the final heat treatments. Results show that the as-cast microstructure of the HCCI consists of M 7 C 3 carbide, M 23 C 6 carbide, martensite matrix, and retained austenite. The large dendritic M7C3 carbide surrounds the matrix, and the M23 ...

Forged and Cast Rolls AHCS - Union Electric Steel

re-engineered High Chromium Steel rolls. By introducing special alloying elements and heat treatments versus industry standard products, the Union Electric Åkers enhanced High Chromium Steel is even more suited to the working conditions in the roughing stands of hot strip mills. High Chrome Steel Work Rolls, known for reliability and performance

Metallurgical Aspects of HIGH- CHROMIUM WHITE IRONS

Metallurgical Aspects of HIGH-CHROMIUM WHITE IRONS PROF. DR. ADEL NOFAL ... By varying composition and heat treatment, these properties can be ... Examples of High Cr Cast Iron for High Temp. Resistance Castings. MICROSTRUCTURES OF HIGH-Cr IRONS To a large extent, the metal matrix in high-chromium irons has characteristics of ...

High-Alloy White Irons - Materials Database

High-alloy white cast irons are an important group of materials whose production must be considered separately from that of ordinary types of cast irons. In these cast iron alloys, the alloy content is well above 4%, and consequently they cannot be produced by

High Chrome Oil Quenching Casting Iron Balls Cr 20-30 For ...

Process features of cast iron balls: Heat treatment process---we have two sets of heat treatment production line.one is oil quenching,the other is air quenching.so that the grinding balls can be burning through andquenching through.and the grinding media has the characters of high hardness, good toughness,low wear rate,low break rate,wear ...

annealing and re-hardening ASTM A532-93 Class III Type A ...

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.

MICROSTRUCTURE AND EROSION-CORROSION BEHAVIOUR

Fe-19Cr-2.8C irons in the as-cast condition as compared to a chilled ductile cast iron by a ball-cratering test using SiC 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 ...

High Chrome Cast Iron Heat Treatment - Aluneth Heavy

We have high chrome cast iron heat treatment,The microstructure of high chromium white cast iron grinding ball ascast 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

High Chrome Cast Iron Heat Treatment - Aluneth Heavy

We have high chrome cast iron heat treatment,The microstructure of high chromium white cast iron grinding ball ascast 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

Microstructural Characteristics and Mechanical Properties ...

Effect of destabilization heat treatment High chromium white cast irons must be heat treated to develop the full hardness and maximum wear resistance. The destabilization (hardening) heat treatment is used with high Cr and Cr-Mo white cast irons to transform the as-cast austenitic

(PDF) Study On The Performance Of High Chromium Cast Iron ...

Study On The Performance Of High Chromium Cast Iron Balls With Varied Carbide Fractions And Matrix Microstructures. ... The structure of the matrix was changed by heat treatment

high chrome cast iron heat treatment

Heat Treating of High-Alloy White Irons :: Total Materia Article. The high-alloy white irons are primarily used for abrasion-resistant applications and are readily cast in

High chrome cast iron heat treatment - catalytec.eu

High chrome cast iron heat treatment; WHEMCO Ohio Foundry | WHEMCO. A leading manufacturer of cast iron rolls for rolling mills around the world. Located in Lima, OH, WHEMCO Ohio Foundry is one of North America’s largest iron foundries and has been in operation for more than 100 years. Products include vertically spun cast and static cast ...

Machining and Heat Treating ASTM A-532

Jul 19, 2011 · Machining and Heat Treating ASTM A-532 Does anyone have any experience working with ASTM A-532 25% high chrome iron? These are cast parts. A-532 Grade III is about Rc42/400 BHN at pour...and can be annealed down to 300 BHN and machined. ...

High Chromium Cast Iron: Part One :: Total Materia Article

The high controlled percentage of chromium helps to retard the formation of graphite and stabilize the carbides. The article of D. Kopyciński et al. presents results of heat treatment on the high chromium cast iron. The study was carrying out on samples cut from the casting made from chromium cast iron.

(PDF) Microstructure and properties of high chromium cast ...

The size and volume fraction of the secondary carbides in 20 wt.%Cr high chromium cast iron were higher than for 27 wt.%Cr high chromium cast iron. The hardness of heat-treated 20 wt.%Cr high ...

Study of the Hardening-toughening Heat Treatment Process ...

The influence of quenching-tempering heat treatment, conventional austempering heat treatment and multi-stage austenitizing austempering heat treatment. ... Study of the Hardening-toughening Heat Treatment Process of High Chrome Cast Iron Grinding Balls (1) ...

(PDF) Heat Treatment in High Chromium White Cast Iron Ti Alloy

The influence of heat treatment on microstructure and mechanical properties of high chromium white cast iron alloyed with titanium was investigated.

Wear resistance of high chromium white cast iron for coal ...

After destabilization treatment, the results show wear behavior differences in the II D alloy, as-cast and annealed. 2. Bibliographic review 2.1. High-chromium white cast iron characteristics High-chromium white cast irons are ferrous alloys containing 11-30% Cr and 1.8-3.6% C along with variable amounts of molybdenum, manganese, copper and ...

Molybdenum Grade Cast Irons - imoafo

These cast irons have acceptable properties as cast. This eliminates the need for a costly heat treatment and makes them a cost effective alternative to other grinding materials. Reduced levels of austenite formers, such as nickel and manganese, also minimize the retention of low temperature austenite - a potential cause of premature failures.

High Chromium White Cast Iron (High Cr White Iron)

High Chromium White Cast Iron (High Cr White Iron) High Chromium White Cast Iron, or High Cr White Iron, grades are used in wear applications that require some corrosion resistance. The high chromium content offers the corrosion resistance and the fine carbides dispersed throughout provide the hardness. These grades cannot be welded.

Grinding ball casting line,grinding ball manufacturer ...

Ningguo Zhicheng is a leading grinding media ball making machine manufacturer from China,specializes in automatic grinding ball production line,heat treatment furnace equipment,ball mill ball metal mold,also offer purchasing suggest,factory layout plan.