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零件材料:SUJ2(硬度HRB92)。成形法:反挤压(断面缩减率为57％)。工艺流程:球化退火→锯切→磷化→反挤压→正火。机床:400吨肘杆式挤压机。一、成形设计要点从零件形状(见图1)的角度考虑: 1.零件为园筒状,带底,深径比为0.7,适合用反挤压工艺一次加工成形; 2.挤压后,可辅以内精车、外抛光加工,以确保挤压件的壁厚不均度<0.1毫米; 3.在挤压件内凹面的转角处往往容易产
Parts Material: SUJ2 (hardness HRB92). Forming method: anti-extrusion (reduction of area of 57%). Process: ball annealing → sawing → phosphating → anti-extrusion → normalizing. Machine tool: 400t elbow bar extruder. First, the design points from the shape of the part shape (see Figure 1) point of view: 1 part of the cylinder-shaped, with the bottom, the depth to diameter ratio of 0.7, suitable for a processing with anti-extrusion molding process; Can be complemented by fine car, polished outside, to ensure that the extrusion of the thickness of the unevenness of <0.1 mm; 3. In the extrusion of the corner of the concave is often easy to produce