Mechanical Characteristics of Steels G3Si1 and Sv-08G2S

Abstract

There has been formed the technological passport of steel G3Si1 and Sv-08G2S in the state of supply, which gives enough information for the technologist about the behavior of the material in the plastic field, which allows to design a trouble-free process of wire drawing and to produce high-quality products. In the development of the technological passport of steels G3Si1 and Sv-08G2C, samples were considered that were made from one coil of each wire coil, respectively, which minimized the influence of random factors on the composite material map.

A current curves are necessary for the calculation of power-supply parameters, determination of voltage stress, and also the modeling of the finite element (ITU) drawing process, and essentially depends on the supply batches and the manufacturer. The plasticity diagrams are an extremely important function for evaluating the possibility of form-modification without destroying the phenomenological criteria of deformability, with the plasticity of the steel G3Si1 much higher than the Sv-08G2C (this is subjected to the production experience), therefore it can be recommended for use without intermediate annealings. Since the drawing process seems to be nonmonotone one — the material in the deformation cell from the compression zone passes into the tensile zone — as a result of this there is the Bauschinger effect. The Bauschinger coefficient in the field of developed deformations of the investigated materials was 0,14...0,16, which indicates the high sensitivity of the investigated steels to the formation anisotropy. This fact must be taken into account, in particular, in the simulation of drawing ITU. An assessment of the technological inheritance for the drainage process can be made according to the hardness of the wire after the technological re-bake. The calibration graph constructed in this paper, hardness (HV)–strength (σ_i)–deformation (e_i) makes it possible to estimate the hardness of the wire after its drawing, which is important in predicting the quality of the products.