According to the relative position of the internal sprue on the steel casting, the casting system can generally be divided into top injection type, side injection type and bottom injection type. (1) Top injection type, the metal liquid is injected from the upper part of the cavity, which has...
There are two main classification methods for sand casting gating system of mud pump body: one is that it can be divided into open type, semi closed type and closed type according to the cross-sectional area of each part of sand casting gating system of mud pump body; The...
The experimental object is Flywheel Casting. The outer circle diameter of the casting is 350mm, the thickness is 39mm, and the material is QT600-3 (equivalent to the German standard gjs600). In order to realize stable and rapid mold filling, a semi closed gating system with a inner < a...
The gating system of iron mold sand coated casting is the channel for liquid metal to be injected into the mold cavity. Correct and reasonable gating system can ensure qualified iron mold sand coated castings, improve productivity, save metal and reduce production cost. At present, when designing the gating...
Gating system (running system) is the general name of the channel of liquid metal flowing into the mold cavity in iron mold sand coated casting mold. The gating system generally includes three parts (as shown in the figure): the gate cup, also known as the outer gate, mainly plays...
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...