heat treatment of high chrome white iron

heat treatment of high chrome white iron

Heat Treating ASTM A532 Chrome White Iron Penticton ...

Jan 16, 2018  How to Heat Treat ASTM A532 – High Chrome White Iron Posted by Penticton Foundry on January 16, 2018. Why Use Chrome White Iron ASTM A532, or high chrome white iron, has superior abrasion resistance. It is particularly effective in machinery or equipment that experiences grinding, gouging abrasion or crushing.

Read More
Heat Treatment Technology of High Chromium Iron Castings ...

Oct 02, 2020  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.

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

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
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 ...

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

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.

Read More
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.

Read More
Heat Treating of High-Alloy White Cast Irons[1] Heat ...

High-alloyed white cast irons are an important group of materials whose production must be considered separately from that of ordinary types of cast irons. The metallic matrix supporting the carbide phase in the high-alloy white cast irons can be adjusted by alloy content and heat treatment to develop proper balance between resistance to ...

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

With carefully controlled heat treatment the cast iron properties can be further influenced to yield higher strength and ductility depending on the desired application. High-chromium white iron is an erosion resistant ferrous alloy widely used in manufacturing, it has for long been applied to components in mining and minerals industry due to ...

Read More
Metallurgical Aspects of HIGH- CHROMIUM WHITE IRONS

When a martensitic white iron is desired for superior abrasion resistance, additions of 0.5 to 3.0% Mo effectivelysuppress pearlite and other high-temperature transformationproducts. Molybdenum is even more effective when used in combination with copper, chromium, nickel, or both chromiumandnickel. Molybdenum has an advantage over

Read More
High Chrome White Iron – Abrasion Resistant Cast Irons

30% Cr. 30% chrome white iron is the most corrosion resistant of the ASTM A532 iron alloys. It has found a real niche in flue-gas desulfurization, as well as other oxidizing environments and some reducing environments. It is not as abrasion resistant as the other high chrome white iron alloys. Learn More: ASTM A532 Data Sheet 30% Cr.

Read More
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.

Read More
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.

Read More
high chromium white iron heat treatment - BINQ Mining

Feb 22, 2013  White Iron (part 2) – Houston Heat Treat, Metal Heat Treating . Heat Treat Industry News. May 05, 2011. White Iron on the metallurgical precautions during casting and heat treatment of high chrome iron, ASTM-A532, Class »More detailed

Read More
Heat Treating of High-Alloy White Cast Irons[1] Heat ...

High-alloyed white cast irons are an important group of materials whose production must be considered separately from that of ordinary types of cast irons. The metallic matrix supporting the carbide phase in the high-alloy white cast irons can be adjusted by alloy content and heat treatment to develop proper balance between resistance to ...

Read More
White Iron (part 1) - Industrial Heating

Apr 27, 2011  Problems we face are cracking in a few impeller castings before and after heat treatment, most typically an S-type crack profile diametrically around the hub. Answer: As you most likely already know, optimum properties are usually achieved in high-chromium white irons with heat-treated martensitic structures.

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

With carefully controlled heat treatment the cast iron properties can be further influenced to yield higher strength and ductility depending on the desired application. High-chromium white iron is an erosion resistant ferrous alloy widely used in manufacturing, it has for long been applied to components in mining and minerals industry due to ...

Read More
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 ...

Read More
HIGH PERFORMANCE MACHINING OF HIGH CHROMIUM

indicated that cutting tool materials, levels of C-Si contents and heat-treatment of the work materials have significant influence on the cutting performance. The study also reveals the mechanism of interaction between cBN tool and high chromium white cast iron under the range of machining parameters. Cutting tool materials exhibit

Read More
High Chrome Wear Plate White Iron AS2027 - EB Castworld

High Chrome Wear Plate White Iron AS2027 for Shot Blast Machines, Chutes, Clinker Silo, Port Machinery and Ball Mills. This specification covers a group of High Chrome Wear Plate White Iron AS2027 that have been alloyed to. secure high resistance to abrasive wear in the applications of the mining, milling, earth-handling, and manufacturing ...

Read More
High Chrome Castings - EB Castworld % High Chrome White ...

High Chrome White Iron Series: High Chrome white iron castings we can produce include 15%Cr, 18%Cr, 20%Cr and 26%Cr. Under same working condition,the wear performance of High Chrome Castings mill liners is four times of that of high manganese steel liners and twice of that of low Chrome alloy steel liners.

Read More
High Chromium White Irons for Mining, Grinding and ...

of white cast iron: The proposal of a novel process. Mater Sci Eng A 618: 96-103. 9. Gasan H, Erturk F (2013) Effects of a destabilization heat treatment on the microstructure and abrasive wear behavior of high-chromium white cast iron investigated using different characterization techniques. Metallurgical and Materials Transactions A 44: 4993 ...

Read More
Heat treatment process for high chromium grinding ball

Heat treatment of high chromium grinding ball is the main method to obtain good wear resistance. The research on high chromium cast iron ball mainly focuses on chemical composition selection, heat treatment process determination, modifier selection, good carbide type and wear mechanism.

Read More
Microstructural Characteristics and Mechanical Properties ...

Changing in chemical composition and heat treatment carried out to this alloy from about 205 MPa for high-carbon grades to about 415 MPa related to microstructural characteristics and mechanical properties of high Cr white cast iron alloys are oresented. Keywords: High-Cr WCI alloys, microstructural characterization, abrasive wear resistance ...

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

High-chromium white irons are extensively used in applications where good resistance to abrasion wear is required, for example mineral processing, cement manufacturing, and slurry pumping (Ref 1-3).This attractive wear behavior is clearly attributed to the microstructure and the participating phases, both in the as-cast and after heat treatment conditions.

Read More
White Iron (part 1) - Industrial Heating

Apr 27, 2011  Problems we face are cracking in a few impeller castings before and after heat treatment, most typically an S-type crack profile diametrically around the hub. Answer: As you most likely already know, optimum properties are usually achieved in high-chromium white irons with heat-treated martensitic structures.

Read More
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 ...

Read More
Heat treatment process for high chromium grinding ball

Heat treatment of high chromium grinding ball is the main method to obtain good wear resistance. The research on high chromium cast iron ball mainly focuses on chemical composition selection, heat treatment process determination, modifier selection, good carbide type and wear mechanism.

Read More
High Chromium White Irons for Mining, Grinding and ...

of white cast iron: The proposal of a novel process. Mater Sci Eng A 618: 96-103. 9. Gasan H, Erturk F (2013) Effects of a destabilization heat treatment on the microstructure and abrasive wear behavior of high-chromium white cast iron investigated using different characterization techniques. Metallurgical and Materials Transactions A 44: 4993 ...

Read More
White Cast Iron - Types, Microstructure, and Applications

Mar 26, 2020  High chromium white cast iron is the best combination of abrasion resistance and toughness. Chromium content variation and heat treatment can be used to adjust the mechanical properties as there is a trade-off between wear resistance and toughness of cast iron. ASTM A 532 standard has two set standards for compositions and hardness. ASTM A 532 ...

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

treatment for cast iron alloys allow new materials to perform better mechanically and against corrosion when under aggressive industrial environments3.4 . White chrome cast irons are currently leading several fields of applications, being mainly employed in mechanical parts submitted to

Read More
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. One common application using High Chrome White Iron alloys is in Pump and Valve parts for the Mining industry. The high chromium content offers the corrosion resistance and the fine carbides dispersed throughout ...

Read More
Effects of deep cryogenic treatment on property of ...

Jan 01, 2007  1.. IntroductionHigh chromium cast irons are based on the iron–chromium-carbon ternary system , .White iron in the compositional range of 12–30% chromium are extensively used for components that manipulate and mechanically process aggregates and raw materials , , , , , .These alloys consist of hard iron–chromium carbide in a supportive matrix and are particularly suited for abrasion ...

Read More
Heat Treatment of Cast Irons - Heat Treat Doctor

form iron is lustrous, silvery, soft, and ductile. However, pure iron is a poor engineering material, generally not as strong as most plastics. Cast irons are based on the Fe-C system, and the solid-state transformations on which cast iron heat treatments are based are similar to those applied to steels. Heat Treatment of Cast Irons

Read More
Ni-Hard

an abrasion-resistant white iron is survival without breaking in a particular application. The conditions resulting in fracture can be single or repeated impact, or static or dynamic bending stresses. Here the inherent low ductility of the iron is often overridden by the presence of internal stresses due to shape and heat treatment of the casting

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

Oct 11, 2016  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
Machining and Heat Treating ASTM A-532

Jul 19, 2011  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. It can then be heat treated to 600+ BHN. Some pump mfgs, such as Weir-Wemco, use this for grit handling vortex impeller pumps.

Read More
Wear and Corrosion Behavior of High-Cr White Cast Iron ...

Aug 29, 2015  Karantzalis AE, Lekatou A, Mavros H (2009) Microstructural modifications of As-cast high-chromium white iron by heat treatment. ASM Int JMEPEG 18:174–181. Article Google Scholar 4. Zumelzu E, Goyosb I, Cabezas C, Opitz O, Parad A (2002) Wear and corrosion behaviour of high-chromium (14–30% Cr) cast iron alloys.

Read More
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 ...

Read More