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20Cr2Ni4A steel - Carbon steel,Alloy steel,Spring steel ...20Cr2Ni4A steel. 20Cr2Ni4A - Gear steel bar | BEBON steel expert. The material 20Cr2Ni4A is a kind of structural alloy steel. 20 cr2ni4a is high quality alloy steel and it has high strength,toughness and hardenability.For 20Cr2Ni4A ...
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CN102021588A - 20Cr2Ni4A steel carburizing and ...The invention discloses a 20Cr2Ni4A steel carburizing and nitrocarburizing multiplex heat treatment process, which comprises the following process flows of: putting components made of 20Cr2Ni4A steel into a carburizing furnace, carburizing at the temperature of between 900 and 930 DEG C for 4.5 to 6 hours, discharging and performing air cooling; performing heat treatment on the carburized ...
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Influence of high temperature tempering on retained ...The main ways for reducing retained austenite of carburized 20Cr2Ni4A steel are high temperature tempering and cryogenic treatment. The influence of different high temperature tempering on ...
Influence of high temperature tempering on retained ...The main ways for reducing retained austenite of carburized 20Cr2Ni4A steel are high temperature tempering and cryogenic treatment. The influence of different high temperature tempering on ...
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Experimental Study on Vacuum Carburizing ProcessAs a low-carbon alloy steel, 20Cr2Ni4A steel has an excellent mechanical properties. It has been used for producing heavy-duty gears, which require good wear and fatigue resistance.
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Influence of ceramic coating of MgO on oxidation behavior ...The coatings on 20Cr2Ni4A steel substrates were prepared by high-volume low pressure (HVLP) spray method. The HVLP spray gun was connected to an industrial compressor with 3 hp. Then, the coated sample was dried at 100 °C for 1 h.
Replacement of conventionally complex processing for low ...This paper deals with the effects of rare earth (RE) addition on the microstructure and properties of 20Cr2Ni4A steel carburised at 860°C. Compared with conventional 920°C carburising and other complex treatments, finer and more dispersed carbide precipitates formed in the surface layers.Published in: Materials Science and Technology · 2001Authors: M F Yan · C H Cai · Z R LiuAffiliation: Harbin Institute of TechnologyAbout: Temple · Indentation hardness · Precipitation · Metallography · Tempering · Cementation
High Stength Alloy Structural Steel 20Cr2Ni4A Hot Rolled ...The material 20Cr2Ni4A is a kind of structural alloy steel. 20 cr2ni4a is high quality alloy steel and it has high strength,toughness and hardenability.For 20Cr2Ni4A steel, there is no direct quenching after carburizing in order to reduce surface residual austenite. 20Ci2Ni4A’s cutting and cold deformation plasticity is general and it has poor weldability.
20Cr2Ni4A-苏州日欧钢铁有限公司 - szrosteelTranslate this page20Cr2Ni4A是优质合金钢，强度高，韧性及淬透性好。渗碳后不能直接淬火，以减少表层残余奥氏体。
Fracture analysis of a castellated shaft - ScienceDirectThe castellated shaft material is a 20Cr2Ni4A steel. After quenching and high-temperature tempering, Spline Nos. 2 and 3 are laser quenched and the other dimension is carbonized.
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The Experimental Study on Sensitivity of Hydrogen ...During the experiments, 20Cr2Ni4A steel are selected as the materials, which endure the relatively great concussion load in the bad condition, and the gaps’ long-time permanence experiments and short-time tension and concussion experiments have been done.
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AN INVESTIGATION OF CERTAIN INTERGRANULAR CRACKSAn investigation has been carried out on the so-called intergranular cracks appearing in the central part of a macroetched transverse section of a 20Cr2Ni4A steel billet. It is shown that this in fact was a kind of acid-etching phenomenon, due to low-melti...
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Abstract - Harvard UniversityAbstract As a low-carbon alloy steel, 20Cr2Ni4A steel has an excellent mechanical properties. It has been used for producing heavy-duty gears, which require good wear and fatigue resistance.
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New observation of martensitic morphology andFig. 4--Transmission electron micrographs of 20Cr2Ni4A steel after quenching from 900 ~ (a) not tilted, (b) 2.5 deg tilted, and (c) 7 deg tilted (Magnification 40,000 times). plane of martensite, can micrographs such as that shown
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吉林PCrNi3Mo,山西恒易通工贸(图)|东商网Translate this page20Cr2Ni4A用于大截面渗碳件，如大型齿轮、轴类以及要求强度高、韧性好的调质零部件等。 吉林PCrNi3Mo,山西恒易通工贸(图)由山西恒易通工贸有限公司提供。
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