Structure design of casting valve body for globe valve
Stop valve is an indispensable fluid control product in modern industry, which plays a role of cutting off and throttling […]
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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,
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Molten iron melting and test block preparation
(1) Preparation of main metal charge Weigh and prepare the main metal charge. (2) Preparation of main accessories Weigh and
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
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Formation of slag inclusion on the surface of nodular cast iron cylinder
The main defect of the inlet cylinder casting in the NDT of VT, MT and Pt is that there are
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The defect detection method of the nodular cast iron into the cylinder
(1) The surface quality and defects of the air inlet cylinder are mainly inspected by visual inspection (VT), magnetic particle
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
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Study on the casting technology of nodular cast iron into cylinder
According to the analysis of the casting structure and key casting technology difficulties of the intake cylinder, this paper mainly
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
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Production and research status of inlet cylinder castings
Before 2013, the company’s production performance of gas turbine castings was dominated by only a few small and medium-sized steel
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
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Production and research status of inlet cylinder castings at China and abroad
Foreign technology status: Hangzhou Steam Turbine Casting and Forging Co., Ltd. pointed out in the patent technical background of “a
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
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Research status of large nodular iron castings
According to the data reported by China Foundry Association at the industry annual meeting in recent years, the total amount
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
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Production status of large nodular iron castings
Ductile iron is an important kind of strong and tough cast iron, which has been fully used in heavy and
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
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The development prospect of domestic nodular cast iron gas turbine
Since 2002, with the adjustment of national energy policy and the increase of West to east gas transmission project and
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
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Research status of nodular cast iron gas turbine in China
Heavy duty gas turbine (HGT) is a large-scale energy and power equipment which integrates many high technologies such as unit
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Market prospect of nodular cast iron gas turbine
In terms of gas turbine market prospect analysis, relying on the background of our company as the power main engine
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
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Five development stages of foreign gas turbine
The important characteristics of five development stages of foreign gas turbine are summarized as follows: Birth stage (1939-1950): heavy duty
Scientific
Runner section shape of gating system for engine block iron castings
The section shape of gating system runner mainly refers to the section shape of ingate and cross runner. The cross-section
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Development of gas turbine abroad
In the early 1940s, gas turbine began to set foot in the field of energy equipment in the power generation
Scientific
Design of casting process parameters for engine block iron castings
The research of gating system parameters design is to analyze the statistical law of pouring process parameters, mainly including flow
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Technical development of engine block iron castings
Compared with the developed countries in the west, the foundation of engine manufacturing in China is weak, and the continuity