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自1932年张力减径技术专利诞生以来,张力减径工艺已有长足的进步,张力减径机已从二辊式发展到三辊式,已从集体差动传动发展到分组差动传动,其应用范围不断扩大。介绍了张力减径工艺的理论基础及其发展;研究了张力减径机稳态和非稳态轧制阶段的应力、应变条件的影响因素;讨论了管端增厚和管子纵向壁厚差异的问题。随着管端增厚控制技术和壁厚控制系统的应用,已可消除或减轻管子的壁厚差异,且管头的切损率也有大幅降低。
Since the tension reduction technology in 1932 the birth of the patent since the tension reduction process has made great strides, tension reducer has developed from the two-roll to three-roll, has been developed from the collective differential transmission to the group differential transmission, the The scope of application continues to expand. The theoretical basis and development of tension reduction process are introduced. The factors that affect the stress and strain conditions during steady-state and non-steady-state rolling of tension reducer are discussed. The differences between tube end thickening and longitudinal wall thickness problem. With the pipe end thickening control technology and the application of wall thickness control system, the difference of wall thickness of pipe can be eliminated or reduced, and the cutting rate of pipe head has also been greatly reduced.