钢铁
鋼鐵
강철
IRON & STEEL
2015年
4期
34-39
,共6页
异步轧制%变形区组态%中性角%搓轧区比例
異步軋製%變形區組態%中性角%搓軋區比例
이보알제%변형구조태%중성각%차알구비례
Asymmetrical rolling%deformation region types%neutral angle%cross shear ratio
为研究异步轧制搓轧区的几何参数，根据力平衡方程和秒流量相等的原则，建立了无张力条件下不同变形区组态的中性角和搓轧区比例计算模型，并按中性角取值对不同变形区组态进行划分。在三区组态的条件下，分析讨论了异速比、摩擦因数、轧件厚度和压下率对搓轧区比例的影响。搓轧区比例是决定异步轧制在降低轧制力、最小可轧厚度和得到细化组织工艺条件的重要参数，搓轧区比例计算模型的建立，为异步轧制工艺参数的设定提供了理论依据。中性角和搓轧区比例计算式经过试验验证，与实际值吻合。
為研究異步軋製搓軋區的幾何參數，根據力平衡方程和秒流量相等的原則，建立瞭無張力條件下不同變形區組態的中性角和搓軋區比例計算模型，併按中性角取值對不同變形區組態進行劃分。在三區組態的條件下，分析討論瞭異速比、摩抆因數、軋件厚度和壓下率對搓軋區比例的影響。搓軋區比例是決定異步軋製在降低軋製力、最小可軋厚度和得到細化組織工藝條件的重要參數，搓軋區比例計算模型的建立，為異步軋製工藝參數的設定提供瞭理論依據。中性角和搓軋區比例計算式經過試驗驗證，與實際值吻閤。
위연구이보알제차알구적궤하삼수，근거력평형방정화초류량상등적원칙，건립료무장력조건하불동변형구조태적중성각화차알구비례계산모형，병안중성각취치대불동변형구조태진행화분。재삼구조태적조건하，분석토론료이속비、마찰인수、알건후도화압하솔대차알구비례적영향。차알구비례시결정이보알제재강저알제력、최소가알후도화득도세화조직공예조건적중요삼수，차알구비례계산모형적건립，위이보알제공예삼수적설정제공료이론의거。중성각화차알구비례계산식경과시험험증，여실제치문합。
The calculation formulas of geometric parameters,such as neutral angles and cross shear ratio in asymmetrical rolling were found. Different types of deformation region in asymmetrical rolling were distinguished by the values of neu-tral angles. The influences of speed ratio,friction coefficient,entry thickness and reduction ratio on the value of cross shear ratio were analyzed by the formula for cross shear ratio established in this study. The cross shear ratio is one of the most important parameters in asymmetrical rolling which determines the rolling force the asymmetrical rolling can reduce. The cross shear ratio can also influence the permissible minimum thickness and the micro-structure of rolled piece. The formula to calculate the cross shear ratio provides the theoretical foundation for the parameter optimization of asymmetri-cal rolling process.The results of rolling experiment proved that the formulae for calculating the neutral angles and cross shear ratio are consistent with the reality.
