Optimization and verification of gating system for brake caliper mold
According to the above theory, in order to meet the requirements of the sectional area of the sprue, it is […]
According to the above theory, in order to meet the requirements of the sectional area of the sprue, it is […]
(1) The 3D scanning equipment is used to scan the casting surface one by one, and then the three-dimensional surface
The proportion of raw materials for smelting is scrap: recycled material = 4:6, and the composition of molten iron after
The simulation results of filling temperature field are shown in Figure 1. It can be seen that the filling liquid
(1) Confirmation of number of cavities and type of gating system The equipment model is disa230x, and the mold plate
The gating system is composed of a gate cup, a runner, a sprue and an inner gate. It is a
Inoculation treatment: inoculation treatment of nodular cast iron can improve the roundness of graphite ball, improve the spheroidization rate, and
The causes of shrinkage cavity and porosity of nodular cast iron are complex. The main factors affecting primary shrinkage, volume
Sand slag hole is the most common surface defect of sand mold casting, which is difficult to avoid and usually
The solidification process of ductile iron castings is generally a process of shrinkage, expansion and re shrinkage. Although the precipitation
To obtain a dense casting, the sprue cup should be poured as soon as possible and always filled during the
Nodular cast iron (ductile iron for short) is the 50th century A kind of high strength cast iron developed in
The flow rate W is defined as the metal weight passing through the cross-sectional area of the gating system within
Before designing the mold process, the natural properties of the parts should be analyzed, including weight, volume, surface area, number
The calculation of flow velocity at specific position of gating system is based on Torricelli formula of ideal free falling
According to the experimental results of the first two sections, the carburization defects will lead to the excessive chemical composition
The properties of tensile samples were tested by a universal testing machine controlled by microcomputer, and the tensile strength and
Six groups of samples were taken when analyzing surface carburization, and the location of the test point was changed to
In this test, 6 test pieces were poured in the same ladle of molten steel. The chemical composition of molten
In order to study the carburization defects of steel casting for bridge support, four sampling locations are selected, namely, near
The filling process of lost foam casting is the replacement process of metal liquid and foam pattern. Because the pouring
Using the process plan after the second optimization, the small batch production verification of steel and steel bearing was carried
When setting simulation parameters in ProCAST preprocessing section, the following aspects need to be adjusted: (1) The material of cold
The simulation results show that the safety height of riser is 11.15cm, which is 8.15cm higher than the minimum safety
It can be seen from Fig. 1 that when the pouring temperature changes from high to low, the safe height
The safety height of riser feeding is taken as the evaluation index in the orthogonal test. The measurement method of
The process parameters of lost foam casting have significant influence on the mechanical properties and the formation of carburizing defects.
The simulation parameters of vertical pouring scheme are consistent with those of horizontal pouring scheme, and other material configuration parameters
The steel and steel bearing trial produced by horizontal casting scheme is shown in Fig. 1. The overall appearance quality
The main functions of lost foam casting with negative pressure casting are as follows: (1) Compact the dry sand to