Welding process flow and control requirements of nodular cast iron end cover castings
Since ductile iron castings are prone to crack defects during cold welding, in order to ensure that all relevant properties
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Analysis of casting process problems and improvement scheme of nodular cast iron support casting
1. Cause analysis The modified ductile iron casting process is drawn into a three-dimensional diagram by 3D software, and then
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Improvement measures and practice of new type lost foam casting vibrating system
1. Improve the stiffness and strength of lost foam casting sand box The bottom of lost foam casting sand box
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Application of a new type of vibrating table in lost foam casting
Lost foam casting requires that the molding sand can fill the mold space tightly during molding. Therefore, the vibrating system
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Measurement method of Vickers hardness of precision casting parts
Precision casting Vickers hardness test is a kind of indentation hardness test. The value of Vickers hardness has nothing to
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Casting technology of nodular cast iron support casting
The heavy truck rear axle leaf spring support is the key component connecting the leaf spring and the frame. It
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Cause analysis of surface defects of AlMg10 alloy casting parts
It can be seen from the chemical composition analysis, microstructure metallography and SEM observation results of the part alloy that
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Filling velocity equation of sand casting
Sand casting method is usually adopted for machine tool bed, and its process flow mainly includes the following steps: ①
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Influence of centrifuge spindle vibration on black spot defect of diesel engine cast iron cylinder liner
The structure of horizontal centrifuge is simple, and abnormal vibration of centrifuge spindle occurs from time to time. The abnormal
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Effect of cooling and solidification conditions on black spot defect of cast iron cylinder liner of diesel engine
During the cooling and solidification process of cylinder liner, the cooling water from the outer wall metal mold and impacting
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Experimental study on black spot defect of cast iron cylinder liner of diesel engine
See Table 1 for the chemical composition of metal mold centrifugal casting vanadium titanium alloy gray cast iron cylinder liner.
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Design of riser for lost foam casting process of cast steel valve body
According to the simulation results of lost foam casting defects of cast steel valve body and the comprehensive analysis of
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Cause analysis of shrinkage porosity of nodular iron castings
Nodular cast iron solidifies in “paste”. Compared with gray cast iron, eutectic solidification time is long, the number of eutectic
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Cause analysis of defects in lost foam casting process of original cast steel valve body
Fig. 1 and Fig. 2 are respectively solidification time nephogram and solid rate change diagram of ZY direction section plane
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Failure low magnification analysis of qt800-3 nodular cast iron crankshaft
The fracture morphology of the failed nodular cast iron crankshaft shows the fracture process and mechanism of the nodular cast
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Design of gating system for lost foam casting of cast steel valve body
According to the analysis of the original process scheme of the valve body, it can be seen that the improper
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Effect of normalizing temperature on mechanical properties of nodular cast iron samples
The tensile specimens of room temperature nodular cast iron as cast and treated at different normalizing temperatures were tested at
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Numerical simulation of shrinkage cavity and porosity in lost foam casting process of original cast steel valve body
Figure 1 shows the distribution of shrinkage cavity and porosity predicted by numerical simulation technology under the original process scheme.
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Effect of normalizing temperature on properties and microstructure of nodular cast iron
The samples as cast and normalized were observed by Kearns vh-5000 ultra depth of field optical metallographic microscope. The metallographic
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Cause analysis of porosity defects in green sand casting of cylinder head for heavy vehicle
During the mold test of the cylinder head, the casting air hole defect on the oil cover shell surface is
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Problems and cause analysis of vibration compaction system in lost foam casting
ZHY casting adopts 20 ~ 40 mesh quartz sand and manual bag sand adding method. The size of sand box
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Low pressure casting defects of aluminum alloy flywheel housing
The structure of the flywheel housing is relatively complex and belongs to a typical thin-walled shell structure. Due to the
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Simulation of low pressure casting process for aluminum alloy flywheel housing
The low-pressure casting simulation model of flywheel housing is established by ProCAST. The simplified three-dimensional digital model of the die
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Effect of molybdenum on tensile strength of gray cast iron
Based on the above experimental results, in order to verify the effect of molybdenum on the tensile strength of gray
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Effect of molybdenum on carbide precipitation of gray cast iron
Molybdenum is an element with strong affinity with carbon, which is conducive to the formation of the second phase particles
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Effect of molybdenum on matrix structure of gray cast iron
According to the different matrix structure, it can be divided into ferrite matrix gray cast iron, pearlite ferrite matrix gray
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Effect of molybdenum on graphite in gray cast iron
Graphite parameters such as type, content and length in gray cast iron have an important influence on its tensile strength.
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Effect of molybdenum on carbide precipitation in experimental samples of gray cast iron
Fig. 1 shows the scanning electron microscope BSE photos of gray cast iron samples with different molybdenum content. It can
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Effect of molybdenum on properties of gray cast iron
Figure 1 and Figure 2 show the microstructure of gray cast iron corroded by 4% Vol. nitric acid alcohol under
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molybdenum on properties of gray cast iron
Figure 1 shows the graphite morphology of samples S1 ~ S4 in Table 1 observed under scanning electron microscope. According