Comparison of casting defect grade evaluation by different standards
The ultrasonic testing standard for carbon steel, low alloy steel and martensitic stainless steel castings (astm-609 / 609m), ultrasonic testing […]
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Influence of different casting systems on casting defect distribution of steel castings
According to the relative position of the internal sprue on the steel casting, the casting system can generally be divided
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Prediction of hot crack defects in steel castings
Hot crack defect refers to the casting defect when the solid rate of steel castings is close to 1.0 at
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Defect prediction and experimental verification of cast steel joints
The flow of liquid metal and the change of casting system will affect the defects of castings. However, due to
Resin Sand Casting
Chapter 1: The Basic Process Flow of Resin Sand Casting Resin sand casting is a popular method for creating metal parts
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Filling and solidification process of cast steel joints
The formation of cast steel joints has experienced two stages: mold filling and solidification. Macroscopically, it mainly involves three physical
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Model parameters of steel casting system
The three-dimensional steel casting model and sprue model established in AutoCAD are combined into a whole and saved as Import
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Modeling and parameter selection of steel casting system
The pouring and riser system includes two parts: steel casting system and riser system. The steel casting system is the
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Analysis of stress and strain in sand casting solidification process of mud pump body
Due to the different cooling rate of each part of the sand mold casting of the mud pump body during
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Quality status of sand castings after sand falling and shot blasting
The quality status of castings after sand dropping and shot blasting in the two sand mold casting process tests is
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Comparison of damage NDT results of typical four branch cast steel joints
In order to verify the nondestructive ultrasonic flaw detection test results of typical four branch cast steel joints, take four
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Material of steel castings for shell housing
The steel castings of shell housing are made of low alloy steel and low carbon steel. The content requirements of
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Casting forming theory of cast steel joints
The forming process of cast steel joint mainly includes the filling process and solidification process of cast steel joint. The
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Slice test of typical four branch cast steel joints
1. Test purpose (1) The random characteristics of typical casting defects distribution of cast steel joints are analyzed; (2) Verify
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Effect of C, Si, Mn, P and s in alloy on hot tears casting defects
The larger the hot brittle zone of the alloy, the greater the shrinkage of the casting in this temperature range,
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Simulation results and analysis of mud pump body pouring in sand casting
The simulation results of the filling process when the pump body of sand casting mud pump is poured by the
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Ultrasonic flaw detection process of cast steel joints
1.Detect defects The probe specified by the supplier and the buyer shall be used to scan the inspection area of
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Formation mechanism of hot tears casting defects
The formation mechanism of hot tears casting defects mainly includes liquid film theory and strength theory. According to the liquid
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Finite element mesh generation of mud pump body in sand casting
Mesh generation is the basis of numerical simulation. At present, there are two main methods of division, namely, finite difference
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Determination of casting defect size of cast steel joint
According to the constancy of sound velocity propagation in the same medium and the proportional relationship between propagation distance and
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Morphology analysis of hot tears casting defects
The appearance characteristics of hot tears casting defects are that the tears propagates along the grain boundary, the appearance is
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NDT test samples of multiple cast steel joints
The samples for nondestructive testing are 24 cast steel joints randomly selected from the cast steel joints of civil engineering
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Types and causes of casting defects of cast steel joints
Cast steel joints will inevitably produce some defects in the production process, such as hot crack, shrinkage cavity, delamination, slag
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Calculation of sand casting gating system for mud pump body
Scheme I The casting mud pump body adopts single bag and single hole pouring, and the diameter of the injection
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Sand casting of motor shell steel castings
① Sand casting process scheme The sand casting process scheme adopts the top pouring system. All the workpieces are in
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Ultrasonic flaw detection of casting defects of medium and large steel castings
Ultrasonic flaw detection mainly detects the near surface and internal quality of steel castings, and the internal quality of steel
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Casting defects of motor housing steel castings
From January to March 2020, ZHY Casting used the above process to produce 200 motor housings in small quantities. Basically,
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Structure and process optimization of sand casting
When designing the structure of sand castings, we should not only consider the requirements of mechanical properties and working performance,
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Analysis on sand casting technology of mud pump body
The mud pump body of sand casting is made of ZG35, which belongs to medium carbon cast steel, with high
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Improvement scheme of insufficient pouring defects of investment casting
After analyzing the defects, another improvement scheme is made, as shown in the figure. In the original scheme, the investment