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Heat Treatment Technology of High Chromium Iron Castings

Oct 02, 2020As 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.

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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.

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CN104195420A

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.

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Heat Treating of High

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 260C (400 to 450F) for at least 4 h.

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Heat Treating ASTM A532

Jan 16, 2018No 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. Instead of graphite, the carbon in the metal becomes tied up in carbides.

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THE HARDENING

Oct 10, 2021THE HARDENING-TOUGHENING HEAT TREATMENT PROCESS OF HIGH CHROME CAST IRON GRINDING BALLS (2) 3.1 Effect of grade austenitizing austempering on mechanical properties of Grinding Ball. After the ball was austenitized at 980 C for 150 min + 920 C for 30 Min, and then put into a salt bath furnace at 260 C for 30 min and 50 Min, the hardness

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Heat Treatment of Cast Irons

Dec 12, 2018Common 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.

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(PDF) Microstructure and properties of high chromium cast

The effects of chromium, nickel, manganese, molybdenum and silicon are discussed in relation to recently developed heat treatment procedures by which high-chromium white iron castings can be

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Heat Treatment of Cast Irons

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

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Research Article Heat Treatment in High Chromium White

of its properties at high temperatures, compared to other wear resistant materials [ ]. In the as-cast condition, the microstructure of high chromium molybdenum white iron consists essentially of dendrites of austenite in a matrix of eutectic mixture of austenite and (Fe, Cr) 7 C 3 carbides [, ]. For many applications, castings are heat

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Study on the heat treatment process of high chrome cast

Study on the heat treatment process of high chrome cast iron (2) Although high chromium cast iron has good hardenability, high chromium cast iron contains a large amount of chromium, making its thermal conductivity worse. When the cooling rate is high, the

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Metallurgical Aspects of HIGH

matrix of the chill-cast shell becomes martensitic. Special Nickel-Chromium White Iron Alloys Some roll alloys are designed to undergo a modified normalizing heat treatment in order to obtain a bainitic microstructure. Microstructure of indefinite chill rolls

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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].

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Heat treatment process of the high chrome cast iron

Heat treatment process of the high chrome cast iron Grinding Media. ABSTRACT: A heat treatment process of high chromium cast iron grinding media with trace alloying elements Mo, V, NB was studied. The heat treatment processes of quenching at 980 C, tempering at 400 C and 600 C was adopted. The microstructure of the quenched Matrix is

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