Basic measures to prevent shrinkage porosity of castings
The causes of shrinkage cavity and porosity of nodular cast iron are complex. The main factors affecting primary shrinkage, volume […]
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Common skills of casting runner design
Sand slag hole is the most common surface defect of sand mold casting, which is difficult to avoid and usually
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Causes of shrinkage porosity in ductile iron castings
The solidification process of ductile iron castings is generally a process of shrinkage, expansion and re shrinkage. Although the precipitation
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Selection of casting gate cup and runner shape for automobile disc brake caliper
To obtain a dense casting, the sprue cup should be poured as soon as possible and always filled during the
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Solidification characteristics of ductile iron casting
Nodular cast iron (ductile iron for short) is the 50th century A kind of high strength cast iron developed in
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Calculation of casting gating system for automobile disc brake caliper
The flow rate W is defined as the metal weight passing through the cross-sectional area of the gating system within
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Hot spot / modulus simulation analysis of brake caliper casting parts
Before designing the mold process, the natural properties of the parts should be analyzed, including weight, volume, surface area, number
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Calculation of casting gating system for automobile disc brake caliper
The calculation of flow velocity at specific position of gating system is based on Torricelli formula of ideal free falling
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Effect of carburizing defect on the composition of gold in lost foam Casting
According to the experimental results of the first two sections, the carburization defects will lead to the excessive chemical composition
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Analysis of tensile properties of lost foam steel casting
The properties of tensile samples were tested by a universal testing machine controlled by microcomputer, and the tensile strength and
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Analysis of volume carburization of steel castings in lost foam casting Process
Six groups of samples were taken when analyzing surface carburization, and the location of the test point was changed to
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Analysis of surface carburization of steel castings in lost foam casting Process
In this test, 6 test pieces were poured in the same ladle of molten steel. The chemical composition of molten
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Determination of sampling position of carburizing defects in steel castings in lost foam casting Process
In order to study the carburization defects of steel casting for bridge support, four sampling locations are selected, namely, near
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Mechanism of carburizing defect in lost foam steel casting
The filling process of lost foam casting is the replacement process of metal liquid and foam pattern. Because the pouring
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Verification of lost foam casting process in small batch production
Using the process plan after the second optimization, the small batch production verification of steel and steel bearing was carried
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Analysis of simulation results of lost foam casting process
When setting simulation parameters in ProCAST preprocessing section, the following aspects need to be adjusted: (1) The material of cold
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Secondary optimization design of lost foam casting process
The simulation results show that the safety height of riser is 11.15cm, which is 8.15cm higher than the minimum safety
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Optimization of lost foam casting process parameters and orthogonal test analysis
It can be seen from Fig. 1 that when the pouring temperature changes from high to low, the safe height
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Optimization of lost foam casting process parameters and orthogonal test results
The safety height of riser feeding is taken as the evaluation index in the orthogonal test. The measurement method of
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Optimization of lost foam casting process parameters and orthogonal test
The process parameters of lost foam casting have significant influence on the mechanical properties and the formation of carburizing defects.
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Numerical simulation of vertical pouring scheme in lost foam casting
The simulation parameters of vertical pouring scheme are consistent with those of horizontal pouring scheme, and other material configuration parameters
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Production verification of horizontal pouring scheme test piece in Lost Foam Casting
The steel and steel bearing trial produced by horizontal casting scheme is shown in Fig. 1. The overall appearance quality
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Negative pressure of lost foam casting for bridge support
The main functions of lost foam casting with negative pressure casting are as follows: (1) Compact the dry sand to
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Selection of riser modulus and shape of nodular cast iron
The feeding riser must be large enough to supply additional liquid metal during liquid shrinkage until the temperature drops below
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Pouring temperature of lost foam casting for bridge support
Pouring temperature is a key factor affecting the quality of EPC Castings. If the pouring temperature is too high, the
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Selection of riser position for ductile iron castings
The design of feeding system is the key content of this paper. We discussed the main factors that affect the
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Selection of drawing and parting surface for casting parts
Drawing is to adjust the taper of the mold or casting surface so that the mold and product can be
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Design and selection of lost foam casting coating for bridge bearing steel casting
Coating is an important part of lost foam casting process and one of the key factors affecting the filling of
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Dry sand material and performance index of lost foam casting steel for bridge support
The advantages of EPC are dry sand molding, no binder is needed, the recovery rate of dry sand is high,
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Foam materials and thermophysical parameters of steel castings for bridge supports
A large amount of carbon in foam materials is the “arch criminal” of the carbon defect produced by EPC cast