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
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Sand sticking defect of bolster and side frame steel castings
The sand sticking parts of the bolster and side frame are mainly concentrated near the inner sprue and the root
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Sand inclusion defect of bolster and side frame steel castings
During the production of bolster and side frame by green sand casting, sand inclusion defects are found, which are mainly
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Production practice of carburizing defects of lost foam casting steel castings
In 2014, ZHY Casting introduced a small lost foam casting production line, mainly for the development of castings for waste
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Smelting and pouring process of steel castings for shell casing
① Molten steel smelting process Element C% Si% Mn% P% S% Cu% Range 0.10-0.28 0.20-0.45 0.30-0.68 ≤0.035 ≤0.035 ≤0.30 5T
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Magnetic particle inspection for casting defects of medium and large steel castings
In the field inspection, we should focus on the parts prone to casting defects. According to my experience in the
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Casting defects such as non elimination of casting stress, improper cold shut and preheating
Fig. 1 and 2 fracture of anchor claw in drop test, which is visually characterized by brittle fracture. The main
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Classification of sand casting gating system for mud pump body
There are two main classification methods for sand casting gating system of mud pump body: one is that it can
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Casting technology of steel castings for motor housing
In 2020, the international and domestic economy went down seriously, the domestic foundry industry was in great depression, and many
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Formation mechanism of MNS inclusion defects in steel castings
The two kinds of MNS inclusion defects observed are formed on the surface of oxidized inclusions. According to the literature