精密成形工程
精密成形工程
정밀성형공정
Journal of Netshape Forming Engineering
2015年
6期
86-91
,共6页
陈绪国%李继光%张杰刚%田恕
陳緒國%李繼光%張傑剛%田恕
진서국%리계광%장걸강%전서
充液拉深%2A12铝合金%平底筒形件%数值模拟
充液拉深%2A12鋁閤金%平底筒形件%數值模擬
충액랍심%2A12려합금%평저통형건%수치모의
hydromechanical deep drawing%2A12 aluminum%flat bottom cylindrical part%numerical simulation
目的 研究工艺参数对2 A12铝合金平底筒形件充液拉深成形的影响规律. 方法 采用数值模拟方法,研究了液室压力加载路径、成形液室压力、压边力和压边间隙对板材充液拉深成形效果的影响. 结果 获得了充液拉深成形的失效形式,以及不同工艺参数下零件壁厚减薄率的变化规律. 成形前期,液室压力不宜过大,最大液室压力在10~25 MPa之间,压边间隙在1 . 05~1 . 15 mm之内,可有效避免零件过度减薄和法兰起皱. 结论 合理的液室压力加载路径和压边间隙,可以有效地控制零件法兰区起皱,防止凸模圆角处破裂.
目的 研究工藝參數對2 A12鋁閤金平底筒形件充液拉深成形的影響規律. 方法 採用數值模擬方法,研究瞭液室壓力加載路徑、成形液室壓力、壓邊力和壓邊間隙對闆材充液拉深成形效果的影響. 結果 穫得瞭充液拉深成形的失效形式,以及不同工藝參數下零件壁厚減薄率的變化規律. 成形前期,液室壓力不宜過大,最大液室壓力在10~25 MPa之間,壓邊間隙在1 . 05~1 . 15 mm之內,可有效避免零件過度減薄和法蘭起皺. 結論 閤理的液室壓力加載路徑和壓邊間隙,可以有效地控製零件法蘭區起皺,防止凸模圓角處破裂.
목적 연구공예삼수대2 A12려합금평저통형건충액랍심성형적영향규률. 방법 채용수치모의방법,연구료액실압력가재로경、성형액실압력、압변력화압변간극대판재충액랍심성형효과적영향. 결과 획득료충액랍심성형적실효형식,이급불동공예삼수하령건벽후감박솔적변화규률. 성형전기,액실압력불의과대,최대액실압력재10~25 MPa지간,압변간극재1 . 05~1 . 15 mm지내,가유효피면령건과도감박화법란기추. 결론 합리적액실압력가재로경화압변간극,가이유효지공제령건법란구기추,방지철모원각처파렬.
The aim of this study was to analyze the influence of the process parameters on the hydromechanical deep drawing of a 2A12 aluminum alloy flat bottom cylindrical part. The effects of the forming pressure, the loading math, the force and the gap of the blank holder on the hydromechanical deep drawing were analyzed by numerical simulation. The failure types of the hydromechanical deep drawing and the changing pattern of wall thickness distribution of the part under different technical parameters were obtained. In the early stage of forming, the chamber pressure should not be too large, the maximum chamber pressure should be between 10~25 MPa, and the blank space should be within 1. 05~1. 15 mm. In these conditions, excessive thinning of parts and wrinkle of the flange could be avoided. The results showed that suitable fluid chamber pressure, loading path and blank holder gap can prevent wrinkle of the flange and crack near the punch corner.
