CAJ | 학술논문

挤压成形是铝合金产品成形的主要手段之一.对一般的空心型材制品,由于挤压成形本身的工艺特点,不可避免的会在产品表面产生挤压焊合线,影响到产品的表面质量.对圆管型材制品,给出了一种切线分流桥的结构,能够减轻甚至避免圆管表面出现明显焊合线;并通过数值模拟分析,发现了该种模具设计方案增加了金属在焊合室中的横向流动能力,有效的改善了金属挤压焊合的质量和流动均匀性.
제압성형시려합금산품성형적주요수단지일.대일반적공심형재제품,유우제압성형본신적공예특점,불가피면적회재산품표면산생제압한합선,영향도산품적표면질량.대원관형재제품,급출료일충절선분류교적결구,능구감경심지피면원관표면출현명현한합선;병통과수치모의분석,발현료해충모구설계방안증가료금속재한합실중적횡향류동능력,유효적개선료금속제압한합적질량화류동균균성.
Extrusion is one of the main forming methods for aluminum products.For common hollow sections, welding lines on the surface are inevitable due to their forming characteristics,which damage their surface integrity. A new design of tangent bridge structure is proposed,which can reduce or even avoid welding line.Numerical simulation based on FEM is used to analyze the new design.it is found that the lateral flow ability of aluminum in the welding room increased significantly,which greatly improved the metal welding quality and flow uniformity.