In theory, the whole process can be summarized into three important stages: primary shrinkage (liquid shrinkage), volumetric expansion (graphitization expansion) […]
The distribution of physical hot spots is special and the solidification process is complex. The distribution of hot spots directly
Casting hot spot refers to the local area of final solidification formed by the internal solidification speed being slower than
During ut inspection, the main defects exceeding the standard were shrinkage cavity and porosity defect. In the subsequent finishing process,
The whole process from molten iron smelting to casting completion is a complex and irreversible process. In the process of
① According to the ratio of cross-sectional area, it is divided into closed gating system and open gating system. The
① The main function of the sprue is to guide molten iron into the runner or runner. According to the
The molten iron enters the mold filling process through the gating system, which can be seen as a liquid with
The main characteristics of the magnetic traces of linear defects detected by MT are mainly linear aggregated magnetic traces with
The main features of magnetic traces of point defects detected by MT. The magnetic traces are scattered and isolated small
The inlet cylinder is one of the typical high difficulty ductile iron castings. Its solidification characteristics are closely related to
The inlet cylinder casting is composed of flange, brace, volute and other parts of cross connection. In the study, the
Shrinkage cavity and shrinkage porosity are common internal casting defects in heavy position of ductile iron castings. The shrinkage cavity
Nodular cast iron intake cylinder is one of the important parts in the front end of heavy duty gas turbine
The section shape of gating system runner mainly refers to the section shape of ingate and cross runner. The cross-section
The research of gating system parameters design is to analyze the statistical law of pouring process parameters, mainly including flow
30 casting samples of cylinder block were selected. The pouring information was counted, including the casting mass (unit: kg), pouring
The technological principle of pouring system for cylinder body iron castings is: conveying liquid metal to the inside of the
Application Statistics of cold iron in cylinder block iron castings. It can be seen from the statistical cases that HT200
6061 aluminum alloy wheel hub was prepared by liquid die forging, and its structure is shown in Fig. 1. Samples
The surface slag inclusion defect is the most common and the most difficult to avoid on the surface of gas
The large cylinder block iron castings are typical thick large iron castings, and the riser free process is mainly used.
The top duckbill riser technology is based on the design theory of direct practical riser technology, which is mainly used
The hot side riser process follows the principle of sequential solidification and meets the requirements of large riser technology. It
The results are as follows (1) Through spectral analysis, the chemical composition of the sample is more than the requirements
Cracks were found at the flange after machining, and the macro morphology of the cracks is shown in Fig. 1.
(1) The main processing procedure of the diesel engine transmission shaft forging is forging isothermal normalizing rough machining ut flaw
In the process of pouring, cooling and solidification, the feeding liquid metal passes through the riser, riser neck and the
As one of the key parts of the engine, the cast iron parts of the engine block have high quality
In the production practice, the shrinkage modulus method is mainly used to design the process riser to complete the feeding
