Control method for room-temperature and high-temperature mechanical properties of ZG15CR2Mo1 material

Abstract

The invention relates to the field of material mechanical property performance optimization control processes, in particular to a control method for room-temperature and high-temperature mechanical properties of a ZG15CR2Mo1 material. The control method is characterized in that the physical properties, a phase transformation point and a CCT curve of the ZG15CR2Mo1 material are carefully and deeply researched; through methods of making different thermal treatment processes, detecting and analyzing material characteristics, optimizing the thermal treatment process, researching influences, on properties, of chemical components, optimizing the chemical components and the like, a thermal treatment process and a chemical component control method, which meet the room-temperature and high-temperature mechanical properties of the ZG15Cr2Mol material, are made; a ZG15Cr2Mol material product with stable quality is produced by sampling, tempering process optimizing, annealing process optimizing, chemical component optimizing, result verifying, and finished product producing, so that stable control needs on the mechanical properties of the ZG15CR2Mo1 material are met, and therefore, the produced material can meet the use needs of the specific mechanical properties.

Description

technical field [0001] The invention relates to the technical field of optimization control of mechanical properties of materials, in particular to a method for controlling the mechanical properties of ZG15Cr2Mo1 material at room temperature and high temperature. Background technique [0002] The main chemical composition requirements of ZG15Cr2Mo1 cast steel material C: 0.15~0.20%, Si: ≤0.8%, Mn≤0.90%, Cu≤0.35%, Cr: 2.0~2.75, Mo: 0.90~1.20, V≤0.05%; The tensile strength is required to be in the range of 585-760MPa, the high-temperature duration of three groups of different temperatures and stresses is required to be more than 120h, and the ductile-brittle transition temperature FATT50 is required to be ≤79°C. However, in the specific production process, there are problems that ZG15Cr2Mo1 cast steel material is prone to chemical composition, unstable heat treatment process control, room temperature and high temperature mechanical properties fluctuations, which affect the sta...

AI Technical Summary

Problems solved by technology

However, in the specific production process, there are problems that ZG15Cr2Mo1 cast steel material is prone to chemical composition, unstable heat treatment process control, room temperature and high temperature mechanical properties fluctuations, which affect the stable control of product quality, thus making the production quality of ZG15Cr2Mo1 cast steel material unstable. , it is difficult to meet the requirements of production and use

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