As a result the replication of sub 0.

The reaction between Ti-6Al-4V cast titanium alloy and BN based investment shell mold during investment casting was investigated.

By adopting the compound mold of die mold,furan resin sand and graphite sand,the heavy duty thin wall complex Al-alloy castings have been successfully produced.

Studied EDM ultrasonic combined pulse electrochemical polishing of 3D complicated surface,described the principle of EDM ultrasonic machining and designed the installation.

Aiming at the problem of groove optimization of milling insert with 3D complex groove, the experiments about milling force and milling temperature and the finite element analysis have been done.

Based on the study of the influence of insert’s groove configuration on chip-restricting, the predicting models for chip-restricting and chip-breaking are established, the method of forecasting chip-curling and chip-breaking is brought forward, and the experiments of chip-restricting and chip-breaking for turning inserts with three-dimensional complex groove are fulfilled.

Aiming at the structural characteristic of complex groove, by studying the chip restriction action of geometrical element which is composed of complex groove, the equation of chip restriction action point and the prediction formula of chip - curl directional angle are deduced and the prediction model of complex groove chip up -curl radius and side -curl radius are destablished.

The Process Present Status and Development in the Future of the Mould Complex Surface;

With the development of product’s aesthetic feeling and customer’s individuation, more and more free-form surfaces and their combination, complex surfaces, are used in the product design of automobile, home appliances, commodity.