Analysis of back calculation results of interface heat transfer coefficient in sand mold casting
After the interface heat flow and temperature field data are solved by the inverse calculation program, the part of the […]
After the interface heat flow and temperature field data are solved by the inverse calculation program, the part of the […]
After sampling the casting defect location, the scanning electron microscope was used for analysis. After ultrasonic cleaning, the casting defect
Since there are certain limitations and uneconomies in increasing metal subsidies, it is necessary to consider a process scheme that
(1) The defects of the anchor support and the outlet flange are close to the processing surface, and the processing
The cylinder head of a certain type of diesel engine produced by ZHY Casting factory has complex structure, compact layout,
For commonly used aluminum alloy materials, the crack propagation life and crack nucleation (initiation) life account for about 30% ~
As a common casting surface defect, sand inclusion casting defect often occurs in wet casting thick plate castings. Typical sand
According to the macroscopic definition formula of interface heat transfer coefficient, it is necessary to know the temperature T1 of
Metal subsidy is one of the most common subsidies. Metal subsidy refers to the structure subsidized on the basis of
As for the calculation of the stress intensity factor of casting defects, scholars have made a lot of efforts and
Porosity casting defect refers to the defect caused by the bubbles left in the casting before the liquid metal solidifies
The temperature data at the thermocouple measured in the experiment are sorted into the data form required by the inverse
With the continuous development and progress of casting technology, the casting structure under the new technical conditions has many advantages
Casting refers to the process of melting solid metal into liquid, pouring it into a specific shape of mold, and
Due to the liquid shrinkage and solid shrinkage of liquid metal during solidification, the holes formed at the last solidification
The three groups of pouring test temperature data of ring sand casting during solidification are as follows: Figure 1, figure
This link should focus on the inspection of personnel skills and experience. The operator’s work certificate can be checked. At
The dual-phase steel pump casing has the common characteristics of cast steel: high melting point, poor fluidity, large shrinkage, easy
The pump casing is the main part of the water pump, which is mostly made of dual-phase steel. Different grades
1. Design of turbine casing pouring system The internal and external contours of turbine shell parts are relatively complex. When
Since the end of the 20th century, with the progress of science and technology and the development of national economy,
The temperature data measured in the solidification process experiment is the basis for solving the interface back calculation. Therefore, it
These two processes are basically similar, which are the basis of the whole casting process and directly affect the box
The single suction pump casing is a box type casting, and its structure is shown in the figure. Casting defects
1. Shorten the production cycle and improve the machining accuracy The mold less casting process adopts computer automatic processing, and
1. Principle of Dieless casting forming technology Dieless casting is an advanced digital forming technology. Take the three-dimensional CAD model
1. The traditional sand casting method has low precision and cannot meet the production of complex parts such as turbine
The tensile properties of nodular cast iron are mainly related to the quantity and quality of graphite balls and the
The links are mainly from the molding, core making, box matching, pouring, cleaning and heat treatment processes. Firstly, the heat
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