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hot-sale product: 20Cr precision steel pipe | 45 ? precision steel pipe | Q345B precision tube | 42CrMo precision steel pipe | 20CrMnTi precision steel pipe | 35CrMo precision steel pipe | GCr15 precision tube | 40Cr precision steel pipe | 16Mn precision steel pipe | 20 10 precision steel pipe | 40Cr precision steel pipe | Large diameter precision steel pipe |
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Liaocheng Henghui precision tube factory ?
Contact person: Manager Zou
Mobile phone: 13561450133
Tel: 0635-8882797
website: bungalow12302.com
Address: Industrial Park, Liaocheng Economic Development Zone, Shandong Province

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Explanation of annealing process for Q345B precision bright tube
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? ? ? The annealing process of Q345B precision bright tube is described by the manufacturer. Normalizing of Q345B precision bright tube refers to the heat treatment process in which steel or steel parts are heated to 30-50 above AC3 or ACM (upper critical point temperature of steel) for appropriate time and cooled in still air. The purpose of normalizing is to improve the mechanical properties of low carbon steel, improve machinability, refine grain size, eliminate structural defects, and prepare for subsequent heat treatment. ?
? ? ? Q345B precision bright tube quenching: refers to the heat treatment process that steel parts are heated to a certain temperature above AC3 or AC1 (the lower critical point temperature of steel) for a certain period of time, and then obtain martensite (or bainite) structure with appropriate cooling rate. The common quenching processes are salt bath quenching, martensite step quenching, bainite isothermal quenching, surface quenching and local quenching. The purpose of quenching is to obtain the required martensite structure, improve the hardness, strength and wear resistance of the workpiece, and prepare the microstructure for the subsequent heat treatment.
? ? ? Q345B precision bright tube tempering: refers to the heat treatment process of steel parts after quenching, heating to a certain temperature below AC1, holding for a certain time, and then cooling to room temperature. The common tempering processes are: low temperature tempering, medium temperature tempering, high temperature tempering and multiple tempering. The purpose of tempering: mainly to eliminate the stress produced by quenching steel parts, so that the steel parts have high hardness and wear resistance, and have the required plasticity and toughness.
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Home page About us Product display News and information technical knowledge marketing network Customer message contact us
Precision steel pipe | precision bright steel pipe - Liaocheng Henghui precision pipe factory ? Contact person: Manager Zou ? Mobile phone: 13561450133
Tel: 0635-8882797 ? Fax: 0635-2122228 website: bungalow12302.com Address: Industrial Park, Liaocheng Economic Development Zone, Shandong Province Administration
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