減徑機生產(chǎn)中空六角鋼的工藝方法

A Process to Produce Hollow Hexagonal Bar Steel with Sizing Mill

摘要: 介紹了生產(chǎn)中空六角鋼的工藝方法，提出了一種新方法——穿軋減徑成型法，并采用模擬軟件重點模擬了減徑成型過程的成型階段。結(jié)果表明：利用減徑機直接生產(chǎn)中空六角鋼的工藝是可行的，即穿軋減徑成型工藝可行。采用穿孔減徑成型法生產(chǎn)中空六角鋼時，減徑機成型機架須采用合適的孔型尺寸，成型機架單機架延伸系數(shù)及孔型尺寸須滿足金屬合理流動的要求；成型機架單機架延伸系數(shù)取1.15～1.25較合適。

Abstract: Elaborated in the article are the processes to produce hollow hexagonal bar steel.And a new process for this purpose is proposed, i.e., a piercing-sizing formation process.Relevant simulation software is used to simulate the formation step of the formation-by-sizing process.The simulation result shows that it is a practical method to produce the hollow hexagonal bar steel by means of directly using the sizing mill, i.e., the piercing-sizing formation process.In case of producing hexagonal hollow bar steel with the said formation process, suitable pass dimensions must be adapted for the formation stands of the sizing mill, while the elongation rate and pass dimensions of each individual formation stand must be in compliance with the requirement for proper metal flow.For the said elongation rate, 1.15~1.25 is a satisfactory selection.