挤压机螺杆构型对玉米胚剪切强度的影响

The Configuration of Screw Optimization of the Extruded System on the Shear Strength Values of Semi-wet Corn Germ

以挤压螺杆构型参数阻流环直径、δ段长度、螺杆转速、螺纹升角作为试验因素,以挤出物的剪切强度为考察指标,研究挤压参数对剪切强度的影响规律。通过四因素五水平二次正交旋转组合法设计试验,利用Design Expert8.0.6软件对试验数据进行响应面分析,并对试验数据进行回归显著性检验,得到最佳挤压膨化工艺参数为:阻流环直径92 mm,δ段长度16 mm,螺纹升角7.10°,螺杆转速180 r/min。在最优参数下剪切强度14.17 N,残油率为0.77%。

The paper researched the influence law of extruding parameters about shear strength by changing configuration of screw:diameter of choke ring,length of δ,speed of screw,angle of screw-thread. The method of quadratic orthogonal rotating combination design of four factors and five levels were used to analysis the response surface of the test data by Design Expert 8.0.6. The optimal extrusion parameters were that:diameter of choke ring was 92 mm,length of δ was 16 mm,speed of screw was 7.10 °,angle of screw-thread was 180 r/min.The residual oil ratio was 0.77 % and shear strength was 14.17 N in the parameters of configuration of screw.