Semi closed gating system is adopted, and the proportion is as follows: Σ a inside: ∑ a transverse: ∑ a straight = 1:0.8:1.2 The design of the ingate is the same as that of scheme I. the sectional area of the ingate is 22.5 cm2, and the size of...
The open gating system is adopted, and the proportion is as follows: Within Σ A: ∑A transverse: ∑A straight = 1.2:1.1:1 The design of ingate is the same as that of scheme I, and the sectional area of ingate is 22.5 cm2. According to the cross-section proportion of open...
The closed gating system is adopted, and the proportion is as follows: ΣA inside: ∑A transverse: ∑A straight = 1:1.3:1.5 The main function of the gating system is to control the filling speed and direction of the melt, distribute the molten metal, adjust the temperature of the molten metal...
Combined with the production conditions and experience, the casting shrinkage is 1% in length direction, 0.8% in height direction and width direction, 1.5 ° in sand core draft angle, 1 ° to 3 ° in external mold draft angle, 5 mm in one side of casting machining allowance, 0.2...
According to the above theory, in order to meet the requirements of the sectional area of the sprue, it is necessary to optimize the connection mode between the sprue and the riser, and to change the sprue into a sheet shape to obtain a lower modulus, so as to...