双辊轧机拉拔法生产带状型材的效率

IF 0.6 Q3 MULTIDISCIPLINARY SCIENCES Science and innovation Pub Date : 2023-12-22 DOI:10.15407/scine19.06.040
V. Razdobreev, K. Kluychnikov, A. Leschenko, D. Palamar, S. Vorobei
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引用次数: 0

摘要

简介。拉拔工艺用于生产各种结构复杂的时装型材,包括薄壁型材、钢带型材和周期型材。由于使用压平机生产钢带的复杂性和压平生产的高资本密集度,自上世纪下半叶以来,制造商一直在尝试使用其他压平方法,特别是在整体和双辊辊模中进行拉伸。本研究的目的是确定不同上浆系统和工艺参数对双辊辊模拉伸过程中形状变化和能量-力参数的规律性影响,并确定在生产带状截面的同时实现最大金属膨胀的最有效方案。使用的材料如下:直径为 5.9 毫米的圆坯,由 St.08А 号钢制成;使用的方法如下:在不同规格系统的双辊轧模中进行不同卷边的冷坯加工。确定了在使用不同轨距系统的双辊辊模中进行带式拉拔工艺的金属形状变化和能量-力参数交替的规律性。实验研究了双辊模具变形的边缘条件,根据变形金属安全系数标准,这些边缘条件可提供稳定、平稳的拉拔过程。通过实验确定了双辊模具最有效的轧制系统,该系统可在生产带状型材的同时提供最大的金属膨胀。在生产宽厚比大于 2 的带状型材时,建议使用带有 "牛头-加速轨距 "系统的双辊轧模金属拉拔技术,以实现每次过渡的最大金属膨胀。此外,由于通过辊模的拉力减小,这种工艺也非常节能。
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Production Efficiency of Ribbon-Type Sections by the Drawing Method in Doubled-Roll Roller Dies
Introduction. The process of drawing is used to produce a wide range of fashion sections of complex configuration, including thin-walled, ribbon-type, and periodical section profiles.Problem Statement. Because of the complexity of steel ribbon production with flattening machines and high capital intensity of flattening production, since the second half of last century, the manufacturers have been trying to use alternative methods of flattening, in particular drawing in monolithic and double-roll roller dies.Purpose. The purpose of this research is to establish regularities of the influence of different sizing systems and process parameters on the regularities of shape change and energy-force parameters of the drawing process in double-roll roller dies and to determine the most effective schemes for achieving the maximal metal expansion while producing ribbon-type sections.Material and Methods. The materials used are as follows: round billets of 5.9 mm in diameter, made of steel brand St.08А; the methods used are as follows: cool billet processing with varying crimping in the double-roll rol ler die with different gauge systems.Results. The regularities of metal shape change and energy-force parameters alternation of the ribbon-type sec tion drawing process in doubled double-roll roller dies by using different gauge systems have been established. Marginal conditions of the deformation in double-roll dies, which provide stable and smooth drawing process according to the criterion of deformed metal safety factor, have been studied experimentally. The most efficient gau ge system of doubled roller dies, which provides maximal metal expansion while producing ribbon-type sections have been determined experimentally.Conclusions. It has been proposed to use the metal drawing technology in doubled double-roll roller dies with “bullhead-accelerated gauge” system while producing ribbon-type sections with a width-to-thickness ratio of more than 2, for achieving the maximal metal expansion per transition. In addition, such a process is energy efficient as the force of pulling through the roller die decreases.
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来源期刊
Science and innovation
Science and innovation MULTIDISCIPLINARY SCIENCES-
CiteScore
1.10
自引率
0.00%
发文量
55
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