Heat Treatment of White Cast Irons | Metallurgy
These cast irons have high abrasion-resistance, and can be readily cast in shapes required in machinery used for crushing and grinding, etc. Abrasion-resistance increases with the increase of hardness due to the increase of the volume of the eutectic carbides (alloy eutectic carbides are much harder than iron carbide). The must element …
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Heat Treating ASTM A532 | Chrome White Iron
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.
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High Chromium Cast Iron: Part One
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. Those were hardened at …
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Machining high chromium cast iron materials cutting tools
Part 1 High chromium cast iron machining and cutting tool selection High chromium cast iron is a kind of high hardness and high strength alloy white cast iron with high corrosion resistance wear-resistant, high chrome cast iron in the case without any heat treatment, the generally hardness of HRC45 or more, the tensile strength 650 …
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Blue Light Industry | foundry & heat treatment
It produces sand castings in cast iron, carbon steel, alloy steel, stainless steel, high chrome as well as copper and aluminum alloys. The foundry houses multiple induction melting furnaces, PLC controlled automated sand mixer, CNC pattern shop and a metallurgical laboratory to offer a variety of industrial castings.
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Optimizing heat treatment and wear resistance of high …
The success of the heat treatment of the high Cr cast irons can be evaluated according to the degree of attainment of the following goals: ... Behavior of …
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Effect of Heat Treatment on Microstructure and Hardness of …
High-chromium cast iron (HCCI) is widely used for manufacturing mill rolls due to its high wear resistance, hardness, low cost and good adaptability to manufacture …
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Analysis of the High Chromium Cast Iron …
The article 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. Those were hardened at ...
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High hardness and toughness of white cast iron: The …
For example, the hardness (HV 30) of a white cast iron of Fe–3.08C–14.8% Cr (mass%) is 507±15, and the hardness of the cast iron subjected to destabilizing heat treatment at 1100 °C for 2 h following air cooling is only 535±16 [8]. As a consequence, both the avoiding of cracking and markedly improving of the hardness …
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high chrome cast iron heat treatment
Microstructural Modifications of As-Cast High-Chromium ... To summarize, heat treatment D (H.T.D) that applies destabilization after subcritical heat treatment attains an increase in the hardness of the white iron and possibly an increase in the wear abrasion resistance as compared to the conventional destabilization—subcritical heat treatment (H.T.B).
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On the influence of compositional variations in high …
On the influence of compositional variations in high chrome cast iron: an assessment of microstructure and mechanical behaviour Brayner Ndivhuwo Nelwalani1,2, Josias van der Merwe1, ... destabilisation heat treatment and after tempering. Selected HCCI samples were subjected to 3-point bend test to obtain their ultimate fracturing forces. During
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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. 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 …
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Heat treatment process for high chromium grinding ball
MICROSTRUCTURE: The microstructure of high chromium cast iron ball after heat treatment was observed by an optical microscope. The microstructure was mainly composed of martensite and Eutectic carbides with a little-retained austenite. After heat treatment, the surface hardness and the core hardness of the high chromium cast iron …
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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 …
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Effect of heat treatment process on mechanical properties of high …
The effect of the three factors on mechanical properties of Cr26 high chromium cast iron after heat treatment is quenching temperature > tempering temperature > quenching soaking time. The optimum ...
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What is Chrome White Iron – ASTM A532? | Penticton …
Chrome White Iron Apron Feed Liner – A Success Story. Chrome White Iron Casting Outlasts CCO 20 Times. Chrome White Iron vs AR400 Plate. Alloy Data Sheet – Pliant25 High Chrome White Iron. The Advantages of High Chrome White Iron. Class 1 Type A (Ni-Hard) Data Sheet. Class II Type B Data Sheet. 25% Cr Data Sheet. …
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high chrome cast iron heat treatment
How cast iron responds to heat Cast iron can absorb and transfer heat fairly quickly and evenly while staying very straight. This is why it is the perfect metal for engine blocks and cylinder heads. The forces that cause cast iron to crack are always mechanical and not mysterious or …
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XRD Investigation on Heat Treatment of High Chrome White …
[1] Agunsoye J. O. and Ayeni A. A. 2012 Effect of Heat Treatment on the Abrasive Wear Behaviour of High Chromium Iron Under Dry Sliding Condition Tribology …
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To selection of technological scheme of …
The new energy-saving schemes of softening heat treatment to ensure the growth of machinability of high chromium cast iron, alloyed by higher quantity of austenite forming elements, are …
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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.
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Heat Treating of High-Alloy White Irons
An austenitizing heat treatment usually comprised heating at temperatures between 750 and 790°C (1380 and 1450°F) with a soak time of 8 h. Air or furnace cooling, not over 30°C/h, was conducted followed by a tempering/stress-relief heat treatment. Refrigeration heat treatment is the more commonly practiced remedy for low hardness today.
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Method for manufacturing high-chrome cast iron …
A manufacture method for HI-chrome cast iron for grinding balls, founding is: the melting in 100KW, 10kg medium-frequency induction furnace of sample blank, smelting temperature is 1450 ℃～1500 ℃, adopts high temperature casting, tapping temperature is 1400 ℃ of left and right; Thermal treatment process is: quench 980 ℃, air cooling is to room …
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High-chromium (22-34 per cent) Cast Iron Alloys and …
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, making operati ons possible at
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Abrasion Resistance of as-Cast High-Chromium Cast Iron
The percentages of carbon and chrome are variable depending on the mechanical ... (Cr,Fe)23С6. Keywords: alloying elements, cast state, high-chromium cast iron, heat treatment, phase-structural ...
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sbm/sbm high chrome cast iron heat treatment.md at …
Contribute to chengxinjia/sbm development by creating an account on GitHub.
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High-Chromium Cast Iron
The high-chromium cast irons respond to heat treatment when the carbon and chromium contents are appropriately adjusted. However, machining of these alloys is very difficult. …
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Alloy data sheet high chrome white iron 25%
To find out why high chrome white iron is so abrasion resistant, read this. Composition . C. Mn. Si. Cr. Min% 2.7 . 24. Max% 3.0. 1.3. 1.0. 27 . ... Full through-hardness can be obtained in 8 inch sections via alloying and heat treatment. Penticton Foundry can offer machining of 25% Cr. ... High Chrome White Iron – Abrasion Resistant Cast ...
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Study of the Hardening-toughening Heat Treatment Process of High Chrome
Abstract： The influence of quenching-tempering heat treatment, conventional austempering heat treatment and multi-stage austenitizing austempering heat treatment on the microstructure and property of high chrome cast iron grinding balls were comparatively investigated. The results show that the impact toughness and impact …
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Microstructure and mechanical properties of a Mo alloyed …
In the present study, 6 wt% Mo was added into high chromium cast iron (HCCI, 16 wt% Cr), and the effects of heat treatment on microstructure and mechanical …
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Soft Annealing of High Chromium White Cast Iron
The objective of the present work is to establish the heat treating parameters necessary to impose to a pair of high chromium white cast irons a hardness figure in the range from 35 to 40 HRC ...
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On the influence of compositional variations in high chrome cast iron
1 Introduction. Cast irons can generally be described as ferrous alloys containing carbon content of ≥2.11 wt.%. They are typically classified into five basic types based on by their graphite morphology [].This includes grey cast iron which has graphite in the form of flakes, ductile or nodular cast iron with graphite present in globular form, …
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Microstructure and properties of high chromium …
The effects of chromium, nickel, manganese, molybdenum and silicon are discussed in relation to recently developed heat …
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Effect of Heat Treatment on Microstructure and Hardness of a High …
High-chromium cast iron (HCCI) is widely used for manufacturing mill rolls due to its high wear resistance, hardness, low cost and good adaptability to manufacture [1,2,3,4].Despite the active application of rolls from high-speed steels, HCCI rolls still occupy a large share of the market [].The cast microstructure of the external layer of …
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High-chromium Cast Ball Heat Treatment Process Research (1)
Dang Jun-peng (Aluminium corporation of China zhongzhou branch, Jiaozuo 454174, China) Abstract： High chromium cast iron is considered to be the best of the anti-wear properties and has a good toughness of the material, So in this cast iron abroad used widely. For years the ball from high chromium cast in the research and production of …
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Cast iron grinding ball of Heat Treatment on Structure and …
Heat Treatment Equipment. ELECTRICAL TYPE HEAT TREATMENT MACHINE; GAS TYPE HEAT TREATMENT MACHINE; TROLLEY TYPE HEAT TREATMENT MACHINE; Equipment For Forging balls. AUTOMATIC HOT ROLLING BALL MOLDING LINE; AUTOMATIC SCREW ROLLING STEEL BALLS PRODUCTION LINE; Sand processing …
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Heat Treatment in High Cr White Cast Iron Nb Alloy
The aim of this research work was the heat treatment optimization of a high chrome while cast iron in order to obtain a final product with a high hardness (wear resistance).
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Heat treatment effect on microstructure, hardness and wear …
ZHU Lijuan, YANG Chengkun, LIU Yue, et al. Blast liner with Cr26 high chromium cast iron heat treatment[J]. Casting, 2010, 59(3): 308–311. (in Chinese) …
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