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
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Microstructure and chemical composition of MNS inclusion defects in cast steel
Two different MNS inclusion defects were observed in cast steel. Fig. 1 shows the microscopic morphology of the first MNS
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New technology to reduce carburization of lost foam casting steel castings
At present, the new technologies and methods to reduce the carburization of steel castings mainly include negative pressure combustion empty
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MNS inclusion defects in steel castings
The material studied is low alloy steel, and its main alloy elements are common elements such as C, Si, Mn,
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Characteristics of slag inclusion and sand hole defects in medium and large steel castings
Fig. 1 slag inclusion defect on the upper surface of medium and large steel castings after processing, which is visually
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Effect of pouring speed on insufficient pouring defects of investment casting
Unreasonable pouring speed setting of investment casting will also produce insufficient pouring defects. In order to determine the reasonable pouring
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Slag inclusion casting defects in lost foam casting of steel castings
Slag inclusion casting defect refers to the casting defect formed by dry sand, coating and other inclusions as molten iron
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Analysis method of insufficient pouring defects of investment casting steel
Another investment casting thin-walled steel casting of ZHY casting was under poured in the trial production process, and the defects
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Repair of casting defects of medium and large steel castings
Different from forged steel parts, steel castings for hull structure have low carbon content and good welding performance. Defective parts
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Characteristics of porosity and shrinkage defects in medium and large steel castings
Fig. 1 the visual characteristics of air hole defects on the upper surface of steel casting hub are round, the
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Effect of pouring temperature on insufficient pouring defects of investment casting steel
In the casting defect scheme, the actual pouring temperature is 1560 ℃, and the actual average pouring speed is 0.38
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Semi rough machining of sand casting mold template
Use the tool with diameter d = 30mm and bottom corner radius r = 2mm for semi rough machining, create
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Improvement of casting defects of bolster and side frame steel castings
1. Improvement measures 1.1 Inspection and control of molding sand performance While maintaining the original test items and requirements of
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Study on Carburizing defects of lost foam casting steel castings
The lost foam casting method is flexible and convenient in modeling and pouring, especially for products with complex structure. lost
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Characteristics of cracks defects in medium and large steel castings
Hot crack: the crack is an irregular curve, the inner surface is rough and black brown iron oxide. Cold crack:
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Analysis of insufficient pouring defects of investment casting steel castings
The support size of a thin-walled steel casting is 400 mm × 310 mm × 270 mm, minimum wall thickness
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Improvement of insufficient pouring defects of investment casting
Because the exhaust rib is not set in the original scheme, the simulation shows that the gas pressure in the