Distribution of carbon in matrix micro zone of Austempered Ductile Iron
Fig. 1, Fig. 2 and Fig. 3 show the linear scanning position and energy spectrum test results of carbon element […]
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TEM analysis of fine structure of ultra fine austenite in Austempered Ductile Iron
Fig. 1 and Fig. 2 show the transmission electron micrograph and selected area electron diffraction pattern calibration of the austenite
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Effect of as cast microstructure on Microstructure of Austempered Ductile Iron
After austenitizing treatment and isothermal transformation, the microstructure of ductile iron has changed obviously. Figure 1 shows the microstructure of
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Effect of austempering process on Microstructure of Austempered Ductile Iron
The austenitizing and isothermal transformation treatment was carried out on several samples taken from Φ 50 mm ductile iron test
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Correlation between matrix type of as cast ductile iron and carbon content in austenite
When the chemical composition of molten iron is constant, the smaller the casting modulus, the higher the amount of P
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Correlation between casting modulus and carbon content in austenite
Under the same austenitizing process parameters, the change of carbon content in austenite with modulus is shown in the figure.
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Effect of austenitizing process parameters on carbon content in austenite of as cast nodular cast iron with different modulus
The as cast nodular iron with MS = 0.25cm, 0.50cm and 1.25cm were austenitized and water quenched respectively. Fig.1 shows
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Variation of carbon content in ferrite of as cast nodular cast iron
Carbon content in bovine eye ferrite The microstructure of as cast ductile iron with MS = 0.25cm consists of 73.7%
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Preparation of nodular cast iron test
Chemical composition of nodular cast iron Qt400-18 nodular iron is selected for the study of austenitizing and austempering treatment in
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Design of sand core exhaust passage of ductile iron intake cylinder
When the high temperature molten iron is poured into the furan resin self hardening sand mold, the furan resin, curing
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Design and calculation of sand core head of ductile iron cylinder
The design of sand core head of intake cylinder is the most important content in sand core design, and also
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Design of sand core shape of nodular cast iron inlet cylinder
Sand cores are used to form the inner cavity, the hole and the parts that cannot be realized by the
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Determination of important casting process design parameters of nodular cast iron intake cylinder
Process design parameters are some parameters related to the pattern and core box manufacturing size, which have a direct impact
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Selection of pouring position of nodular cast iron into cylinder
The casting process plan mainly includes the selection of molding method, pouring position and parting surface. The determination of casting
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Determination of parting surface of nodular cast iron inlet cylinder
Parting surface refers to the contact surface of each casting mold which is divided into several segments. In practical production,
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Effect of pouring composition of nodular cast iron on morphology of thick and large section graphite
Through macroscopic observation and analysis of graphite floating, under the same wall thickness and pouring conditions of inlet cylinder, the
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Special shaped graphite in the center of Heavy Section Ductile Iron and its physical and chemical properties
Visual observation of the test block section with a thickness of 400mm shows that there are dense distribution of suspected
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Analysis of the influence of the composition of nodular cast iron on shrinkage and porosity tendency
According to the test results of shrinkage and porosity defects, the shrinkage and porosity defects are mainly concentrated on the
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Floating graphite on top of Heavy Section Ductile Iron
In order to study the effect of composition on the morphology of thick and large section graphite, bulk sampling was
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Effect of composition of nodular cast iron on shrinkage and porosity
After shot peening and grinding, ut test was carried out on the surface of the test block after sanding, and
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Casting melting composition and process setting
In order to ensure that the experiment has accurate guidance for the inlet cylinder casting, the stepped shaped test block
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Effect of chemical composition on casting properties of ductile iron
The chemical composition directly affects the matrix structure and mechanical properties of nodular cast iron castings. Reasonable chemical composition is
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Formation mechanism and prevention and control of main defects in nodular cast iron intake cylinder casting
(1) The elements with high content of C, O, Al, Si and some other alloy elements are found in the
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Application of Proportional Solidification Technology of nodular cast iron in prevention and control of shrinkage cavity and porosity
By analyzing and mastering the proportional solidification technology of nodular cast iron into the cylinder, the cooling rate is changed
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Formation mechanism and causes of metallographic defects in special parts of ductile iron
When the carbon content is increased to solve the shrinkage cavity and porosity defect, the top graphite floating and the
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Solidification theory of isolated hot spot and thick section of nodular cast iron intake cylinder
In theory, the whole process can be summarized into three important stages: primary shrinkage (liquid shrinkage), volumetric expansion (graphitization expansion)
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Volume change curve of nodular cast iron during solidification
The distribution of physical hot spots is special and the solidification process is complex. The distribution of hot spots directly
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Hot spot distribution analysis of nodular cast iron in Cylinder Casting
Casting hot spot refers to the local area of final solidification formed by the internal solidification speed being slower than
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Forming mechanism and prevention and control measures of shrinkage defects of nodular cast iron in cylinder
During ut inspection, the main defects exceeding the standard were shrinkage cavity and porosity defect. In the subsequent finishing process,
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Application of ductile iron gating system in prevention and control of surface slag inclusion defects
The whole process from molten iron smelting to casting completion is a complex and irreversible process. In the process of