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 […]
Scientific
Scientific
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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,
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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)
Scientific
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
Scientific
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
Scientific
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,
Scientific
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
Scientific
Classification of common gating system for ductile iron cylinder
① According to the ratio of cross-sectional area, it is divided into closed gating system and open gating system. The
Scientific
Flow characteristics of each component in the gating system of ductile iron into cylinder
① The main function of the sprue is to guide molten iron into the runner or runner. According to the
Scientific
Hydraulic analysis of liquid iron filling in cylinder of nodular cast iron
The molten iron enters the mold filling process through the gating system, which can be seen as a liquid with
Scientific
Morphology and composition analysis of linear defects on inlet cylinder surface
The main characteristics of the magnetic traces of linear defects detected by MT are mainly linear aggregated magnetic traces with
Scientific
Morphology and composition analysis of point defects on inlet cylinder surface
The main features of magnetic traces of point defects detected by MT. The magnetic traces are scattered and isolated small
Scientific
Analysis of solidification characteristics of nodular cast iron for intake cylinder
The inlet cylinder is one of the typical high difficulty ductile iron castings. Its solidification characteristics are closely related to
Scientific
Technological characteristics of nodular cast iron in cylinder
The inlet cylinder casting is composed of flange, brace, volute and other parts of cross connection. In the study, the
Scientific
Distribution of isolated hot spot and shrinkage porosity in heavy section position of ductile iron intake cylinder
Shrinkage cavity and shrinkage porosity are common internal casting defects in heavy position of ductile iron castings. The shrinkage cavity
Scientific
Technical requirements of nodular cast iron in Cylinder Casting
Nodular cast iron intake cylinder is one of the important parts in the front end of heavy duty gas turbine