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本文分析了波导管成型拉伸时的金属流动情况,指出不均匀塑性变形是造成矩形波导管截面尺寸偏差大、光浩度不均匀等一系列弊病的主要原因。在此基础上提出了新的配模设计方案。实验结果表明,新的配模方法显著地改善了波导管变形分布情况,降低了变形不均匀程度。经小批量试制证明,新工艺稳定、简易可行,产品精度高,适于工业生产,是生产高精度波导管的一条有效途径。
In this paper, the metal flow during the forming process of waveguide is analyzed. It is pointed out that the inhomogeneous plastic deformation is the main reason of a series of shortcomings such as large size deviation of the cross section of the rectangular waveguide and unbalanced light intensity. On this basis, put forward a new mold design. The experimental results show that the new matching method significantly improves the distribution of the waveguide deformation and reduces the degree of non-uniform deformation. The small batch trial proved that the new process is stable, simple and feasible, high precision products, suitable for industrial production, is an effective way to produce high-precision waveguide.