As a key part of tractor, the main contents of sand casting axle housing are as follows: firstly, the structural manufacturability of sand casting tractor axle housing is analyzed, the reasonable process parameters are set, so as to determine the gating system, and the influence of different gating systems on the filling and solidification process of sand casting tractor axle housing is analyzed, Then the solidification process is optimized by adding cold iron, which reduces the cycle and cost of physical verification and improves the production efficiency. The main research contents are as follows:
(1) The technological analysis of the structure of sand casting tractor axle housing is carried out, including the analysis of the rationality of the structural design process of sand casting tractor axle housing and the quality control of main raw materials and auxiliary materials. Determine the pouring position, pouring temperature, parting surface, etc.
(2) By studying the theory of gating system, the reasonable position of inner gate and the value of average static pressure head are studied. Then, according to the proportional relationship of each unit section, different types of gating systems are designed by using the pouring specific speed method.
(3) Through the simulation of sand casting tractor axle housing with ProCAST simulation software, it is found that the optimal scheme is determined by comparing the flow field, temperature field and solidification defects in the gating system.
(4) Sand casting tractor axle housing physical test verification. Including sectioning and air tightness test.