Defects in sand casting process
Sand casting industry is an ancient and very important traditional industry. Whether in developed countries or developing countries, sand casting […]
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Heat transfer coefficient of lost foam casting interface
When pouring the interface heat transfer coefficient, the heat exchange process between the casting and the mold begins from the
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Characteristics of lost foam casting process
Lost foam casting process is different from other casting methods. Lost foam casting process is a new casting method formed
Scientific
Liquid metal filling morphology of different density model combinations in Lost Foam Casting
The model shown in Fig. 1 is made of two models with the same size and different density bonded by
Scientific
Metallographic structure analysis of nodular cast iron for hub support
The metallographic samples of nodular cast iron No. 1 ~ 3 nodular cast iron corroded by 4% nitric acid alcohol
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Surface hardness of lost foam casting mold
The phenomenon that the mold wall displaces after the molten metal is poured into the lost foam casting mold is
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Stress and deformation analysis of frame sand casting process
The thermophysical parameters of glass quartz sand mold used in actual sand mold casting production were tested by means of
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Mold filling characteristics of gray cast iron in lost foam casting with dry sand
Many observations and experiments have shown that the liquid metal is filled radially forward in the filling process of lost
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Gray cast iron dry sand lost foam casting
The filling process of lost foam casting has a decisive influence on the quality of castings. Due to the existence
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Test of mechanical properties of ductile iron casting
(1) Sample preparation. Using sheet tensile samples, first cut a sheet with a thickness of 2 mm from the middle
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Filling pattern of molten metal in lost foam casting with different pouring methods
Fig. 1 to Fig. 3 are isochronous graphs of liquid metal filling pattern of lost foam casting under different pouring
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Setting of initial and boundary conditions of frame sand casting process
The solidification simulation analysis of temperature field adopts “instantaneous filling”, that is, the influence of the pouring and filling process
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Box making and sanding in Lost Foam Casting
Compared with the traditional casting method, lost foam casting is very simple to box and remove sand. Due to the
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Lost foam casting pouring
Pouring has a great influence on the quality of castings. The more complex the pattern is, the more important it
Scientific
Microstructure observation of nodular cast iron
(1) Sample preparation. Cut the samples of three components into 10 mm by wire cutting machine × 10 mm ×
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Numerical simulation of sand casting for large rolling mill cast steel frame
Sand casting steel rolling stand is a typical large steel casting widely used. It is one of the important components
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Effect of ring model on filling velocity of liquid metal in Lost Foam Casting
The outer circle diameter is 150mm, the inner circle diameter is 100mm, and the ring thickness is 20mm. The model
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Lost foam casting coating modeling
After putting the mold coated with lost foam casting paint into the sand box containing bottom sand, fill the sand
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Mechanical bending strength of HT150 gray iron castings directly produced by water slag iron smelting
Bending strength refers to the ability of materials to bend and crack continuously. HT150 has certain mechanical strength and good
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Determination of thermophysical parameters of materials for sand mold casting
The thermophysical parameters used in numerical simulation of solidification process of sand castings mainly include specific heat CP, latent heat
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Effect of square model on filling speed of liquid metal in lost foam casting
The external geometric dimension is 200mmx100mm, the internal geometric dimension is 150mmx50mm, and the thickness of the model is 20mm.
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Casting coating application turbine housing
The roughness index of the inner cavity of the turbine casing casting channel has an important impact on the engine
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Mechanical tensile strength of HT150 gray iron castings directly produced by water slag iron smelting
HT150 belongs to medium strength gray iron castings. Gray iron has good casting performance, simple process and small casting stress,
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Influence of pouring mode on average mold filling speed of liquid metal in lost foam casting
The test results are shown in the table: Pouring position Total mold filling time (s) Average filling speed (cm/s) Side
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Pretreatment of lost foam casting simulation based on ProCAST
Lost foam casting is a special gravity casting. Because of the existence of foam solid shape in the cavity, it
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Prediction of porosity and shrinkage defects in sand casting
Shrinkage and porosity defects are common defects in sand casting production. The main purpose of numerical simulation of temperature field
Scientific
Influence of coating permeability on mold filling speed in Lost Foam Casting
Paint Total mold filling time (s) Average filling speed (cm/s) Low permeability coating 1.18 17.00 Medium permeability coating 1.14 17.54
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Effect of liquid metal hydrostatic head on mold filling speed in Lost Foam Casting
The test results are shown in the table. Sprue height (mm) Total mold filling time (s) Average filling speed (cm/s)
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Heat transfer in lost foam casting solidification process
The solidification process of castings includes phase change, heat and mass transfer, and the heat transfer phenomenon is in the
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Thermoelastoplastic model in thermal stress model of sand casting
At present, the THERMOELASTIC-PLASTIC model in the thermal stress model of sand casting is widely used. The model does not