石油化工设备
石油化工設備
석유화공설비
Petro-Chemical Equipment
2015年
5期
58-63
,共6页
管料%镦锻%成型工艺%模具设计%外加厚油管
管料%鐓鍛%成型工藝%模具設計%外加厚油管
관료%대단%성형공예%모구설계%외가후유관
tube billet%upsetting%forming process%die design%externally-upset tubing
通过分析管料在镦锻过程中的直壁、鼓形和折叠3种基本内壁变形模式以及这些变形模式间的转化，得到了管料镦锻过程中产生缺陷的根本原因及其防止措施。根据管料弯曲变形的力学分析，导出了其全塑性弯曲的临界条件、壁厚镦锻比限制条件以及镦锻工步数的计算式。利用以上分析结果，以外加厚油管为实例，论述了管料头部镦锻成型工艺的编制方法和基本步骤，并设计出了平锻机上外加厚油管的镦锻模具，设计分析结果已应用于生产实践并取得了满意的效果。
通過分析管料在鐓鍛過程中的直壁、鼓形和摺疊3種基本內壁變形模式以及這些變形模式間的轉化，得到瞭管料鐓鍛過程中產生缺陷的根本原因及其防止措施。根據管料彎麯變形的力學分析，導齣瞭其全塑性彎麯的臨界條件、壁厚鐓鍛比限製條件以及鐓鍛工步數的計算式。利用以上分析結果，以外加厚油管為實例，論述瞭管料頭部鐓鍛成型工藝的編製方法和基本步驟，併設計齣瞭平鍛機上外加厚油管的鐓鍛模具，設計分析結果已應用于生產實踐併取得瞭滿意的效果。
통과분석관료재대단과정중적직벽、고형화절첩3충기본내벽변형모식이급저사변형모식간적전화，득도료관료대단과정중산생결함적근본원인급기방지조시。근거관료만곡변형적역학분석，도출료기전소성만곡적림계조건、벽후대단비한제조건이급대단공보수적계산식。이용이상분석결과，이외가후유관위실례，논술료관료두부대단성형공예적편제방법화기본보취，병설계출료평단궤상외가후유관적대단모구，설계분석결과이응용우생산실천병취득료만의적효과。
Through analysis of tube in the process of upsetting straight wall,drum and folded three basic in wall deformation modes and between the deformation mode transformations,the reasons of the defects and prevention measures of the tube head upsetting process were obtained. According to mechanical analysis tube bending deformation derived its full plastic bending critical condition,wall thickness upsetting ratio limit conditions,and the upsetting step number calcula-tion formula and other important process parameters.Using the above results,externally-upset tubing (EU)as an example,discusses the tube head upsetting forming process planning method and basic steps,designed for horizontal forging machine to externally-upset tubing upsetting die. Design and analysis of the results has been applied to production practice and achieved satisfactory effect.
