Present situation of casting technology at China and abroad
In foreign countries, the analysis unit of “heat and mass flow analyzer” of Columbia University was first used in casting […]
In foreign countries, the analysis unit of “heat and mass flow analyzer” of Columbia University was first used in casting […]
During pouring, under the action of gravity, the molten metal first enters the cavity through the sprue, enters the runner
Casting belongs to liquid metal forming technology. In actual production, casting engineers often make process according to previous experience, and
Figures (a) and (b) show the flow of the liquid metal in the bridge shell when the metal liquid fills
A certain type of broken axle housing of a company is mainly used for tractor load-bearing bridge, with an annual
Several tensile test bars with the sizes of Φ 7mm × 90mm, Φ 12mm × 100mm and Φ 17mm ×
Figure (a) is the real-time screenshot of the molten metal just filling the runner at the beginning of pouring, and
Several samples with diameter of 7 mm are taken from the Φ 50 mm ductile iron test bar for isothermal
In order to predict and confirm the location, size and range of shrinkage defects in the pouring and feeding system
The as cast microstructure of ductile iron with modulus Ms = 1.25cm is 6.0% pearlite + 94.0% ferrite. Several samples
Setting of sand mold material parameters When sodium silicate molding sand is used in production, it can be replaced by
During the solidification of hot metal, the liquid and solid state of most metals exist together most of the time.
The chemical composition of cast high strength and high toughness locking ring steel for dredger was studied. The lock ring
(1) With the increase of casting modulus MS, on the one hand, the amount of graphite precipitation in nodular iron
Generally, the thermal conductivity of metal is related to the temperature and chemical composition of molten steel, which is generally
The numerical model of axle housing is established by Creo software and saved in. STP format. The STP file is
Using ProCAST through The computer numerical simulation software is used to simulate the gating system of the axle housing. The
For austempered ductile iron, the carbon content in high temperature austenite and retained austenite has a significant effect on the
Semi closed gating system is adopted, and the proportion is as follows: Σ a inside: ∑ a transverse: ∑ a
OM Observation The metallographic sample is made by standard metallographic technology. The concrete methods are: grinding the observation surface on
The open gating system is adopted, and the proportion is as follows: Within Σ A: ∑A transverse: ∑A straight =
Tensile test Ht-2402-100kn universal testing machine is used to measure the tensile properties of ADI in strict accordance with GB
Temperature test of molten iron Ya1-w330 portable melting thermometer is used to measure the molten iron temperature in the process
The closed gating system is adopted, and the proportion is as follows: ΣA inside: ∑A transverse: ∑A straight = 1:1.3:1.5
In order to test the carbon content in austenite during austenitizing, gsl-1500x 1500 ℃ high temperature vacuum tube furnace was
The basic operation methods of numerical simulation include finite element method, finite difference method, boundary element method and direct difference
According to the location of the inner gate of the axle housing, the gating system can be divided into top
After the ductile iron test bar is taken out of the box, the angle grinder is used to cut the
When there is not enough structural slope of the axle housing itself, enough draft angle of the axle housing should
Ordinary clay sand molding is adopted, and the molding process includes mold processing, sand mixing, sand pounding, box turning, vent