Calculation and prejudgment method for tensile strength of hot-rolled wire rods

Abstract

The invention discloses a calculation and prejudgment method for tensile strength of hot-rolled wire rods. The method comprises the steps that chemical component data of carbon steel or alloy steel ofdifferent steel types is used as a basis and converted into carbon equivalents, changes of carbon equivalent measured values and average values of all the steel types are subjected to statistical analysis and sort-out and assumed as independent variables; changes of tensile strength measured values and average values of all the steel types are subjected to statistical analysis and sort-out and assumed as dependent variables; a mathematical relationship between the carbon equivalents and the tensile strength is established, and a regression equation is solved; correction processing is performed to obtain an optimal regression equation; and the established optimal regression equation of the carbon equivalents and the tensile strength is utilized to calculate and prejudge tensile strength changes of the hot-rolled wire rods. According to the method, through prediction of the tensile strength of the hot-rolled wire rods, technical support is provided for selection, design, process planning and the like of new steel products.

Description

technical field [0001] The invention relates to the field of steel tensile strength calculation, in particular to a calculation and prediction method for the tensile strength of a hot-rolled wire rod. Background technique [0002] With the improvement of the mechanical performance requirements of product design, the number of new steel grades developed or introduced is also increasing. However, due to many factors, the information or data of these new steel grades cannot be obtained in time, which brings difficulties to the selection, design and process preparation of products. [0003] Among the many performance indicators of steel, tensile strength is an important parameter to measure the design and mechanical properties of hot-rolled wire products, which determines the usability of the material to a certain extent. In the process of tensile test, the quotient of the maximum stress obtained and the original cross-sectional area of ​​the sample is the tensile strength of t...

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Problems solved by technology

However, due to many factors, the information or data of these new steel types cannot be obtained in time, which brings difficulties to product selection, design and process preparation.

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