Ductile iron valve body of excavator hydraulic control valve
Excavators are widely used in highway, bridge, construction, breeding pond, underground engineering, emergency excavation and other engineering construction fields. It […]
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Causes and preventive measures of sand sticking casting defects of cast steel bucket teeth
Compared with cast iron, the pouring temperature of cast steel is higher, which is more than 1560 ~ 1620 ℃
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Difficulties in testing steel castings
1.Poor ultrasonic penetration The complex interface of coarse grain and uneven structure enhances the scattering of ultrasonic wave, and the
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Effect of matrix structure on mechanical properties of nodular cast iron crankshaft castings
When the amount of ferrite in the matrix increases, the elongation after fracture increases. The data · s] show that
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Development of computer simulation of casting filling process abroad
In 1944, Victor pastes of Columbia University first applied numerical simulation to the casting process, and made heat conduction analysis
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Conclusion of mold filling simulation experiment of iron mold sand coated casting of Flywheel Casting
(1) The theory of self shrinkage is used to improve the hole filling rate of Flywheel Casting. (2) In the
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Types of sand sticking casting defects of cast steel bucket teeth
At present, the manufacturing processes of bucket teeth of excavators in China are sand casting, forging and precision casting. In
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Numerical simulation results and analysis of sand casting of large root arm boss of excavator
Under the same process parameters, three sand casting schemes were numerically simulated (Fig. 1). It can be seen from the
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Function, classification and setting principle of exhaust system in sand casting
1. Function of sand casting exhaust system (1) The exhaust system of sand mold casting discharges the medium-sized cavity of
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Methods of preventing back spraying in Lost Foam Casting
Lost foam casting is a kind of casting technology. There will be various casting defects in the casting process, which
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Calculate the price of iron castings
How to calculate the price of iron castings: 1.Confirm whether we can produce the casting. We need to check whether
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Casting process for root connection of excavator boom
The boom is one of the key parts of the excavator frame (boss). In the early stage, this product was
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Classification of hybrid electric vehicles
Hybrid electric vehicles are generally classified according to the form of power transmission, which can be divided into series type,
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Common casting defects of steel castings
Although the casting defects produced in the casting process of steel castings are similar to those produced by ingot casting,
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Nodular cast iron crankshaft iron mold sand coated casting
Numerical simulation analysis is of great significance to optimize the sand coated casting process of iron mold. Although the numerical
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Nodular cast iron crankshaft castings
Effect of chemical composition on as cast microstructure of nodular cast iron (1) The present situation of nodular cast iron
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Normalizing treatment of nodular cast iron crankshaft
Normalizing treatment can improve the strength of nodular cast iron crankshaft. The purpose of normalizing nodular cast iron is to
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Cooling process of nodular iron crankshaft by sand coated casting
As mentioned earlier, iron mold sand coated casting uses the rigidity of iron mold to eliminate the shrinkage cavity and
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Research status of casting filling process
Mold filling process refers to the flow process of liquid metal in each component of gating system and mold cavity.
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Dynamic superposition of shrinkage and expansion during solidification of iron castings
The apparent shrinkage time of iron castings only accounts for a part of the total solidification time, and the external
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Lost foam casting defects
Wrinkle casting defect Wrinkle defect is due to polystyrene foam in high temperature metal pyrolysis to form a large amount
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Matters needing attention in lost foam casting process
There are certain specifications and requirements for lost foam casting, and the following aspects should be paid attention to in
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Wet sand mold casting technology of automobile crankshaft
Crankshaft is one of the most important components of automobile engine. For automobile crankshaft, its main function is to realize
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Main advantages of lost foam casting
Lost foam castings have accurate size and shape, good repeatability and the characteristics of precision casting; The surface finish of
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Design steps of gating system in sand casting
The design steps of sand casting gating system are similar to those of general iron castings, but they also have
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Design process of gating system for iron mold sand coated casting
The gating system of iron mold sand coated casting is the channel for liquid metal to be injected into the
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Formation mechanism of shrinkage cavity and porosity casting defects
Shrinkage cavity and shrinkage porosity casting defects are common defects in casting production. They are holes formed due to the
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Fault detection technology of bucket teeth of mining excavator
The series of studies are carried out on the related problems of bucket tooth fault detection of excavator bucket, and
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Effect of gating system on the quality of iron mold sand coated castings
Gating system (running system) is the general name of the channel of liquid metal flowing into the mold cavity in
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Production of steel castings
(1) Melting of cast steel. Cast steel must be melted in electric furnace, mainly electric arc furnace and induction furnace.