Interaction between rare earth and sulfur in gray cast iron
Sulfur can cause “hot brittleness” of cast iron during smelting of gray cast iron and reduce the corrosion resistance, welding […]
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gray cast iron
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Effect of rare earth on common inoculant of gray cast iron
As a high-efficiency inoculant, rare earth has always occupied an important position in the application of inoculant, mainly because it
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Effect of rare earth on spheroidizing agent of gray cast iron
Spheroidized elements usually have the following common properties: (1) In gray cast iron, the solubility of elements in molten iron
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Adding rare earth elements to gray cast iron to improve its properties
Adding rare earth elements into gray cast iron can significantly improve the mechanical properties of gray cast iron, such as
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Development of rare earth gray cast iron
The strength of gray cast iron mainly depends on graphite and matrix structure. With the increase of carbon equivalent, the
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Effect of rare earth elements on Microstructure of low carbon equivalent gray cast iron
Since the 1980s, the rare earth industry has developed rapidly. Whether abroad or at home, the application technology of rare
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Brief introduction of low carbon equivalent gray cast iron
Gray cast iron has low cost, low price and wide application. It has always accounted for a large proportion in
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Effect of different proportion of pig iron added to gray cast iron cylinder head
Gray cast iron cylinder head pig iron is added according to 5%, 10%, 15% and 20% of the total charge.
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Analysis of ferrite layer on the surface of gray cast iron cylinder head
There may be two reasons for this phenomenon: holding time of molten iron and water content of molding sand. 1.
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Hardness control of gray cast iron cylinder head in actual production
Generally speaking, the hardness is positively correlated with the tensile strength and wear resistance of gray cast iron, while the
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Selection of equipment and melting process for locating plate of high strength gray cast iron
1. Production equipment and burden ratio A 3T medium frequency induction furnace is used in the smelting process, and the
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Factors affecting fatigue wear resistance of gray cast iron
Rolling fatigue contact is a very complex problem, so there are many factors affecting the fatigue wear resistance of gray
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Proportioning calculation of gray cast iron for test
In this test, 50KW medium frequency induction furnace is used for smelting, and each group of charge is 25kg. Proportioning
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Fracture analysis of gray cast iron counterweight
The counterweight can adjust the service quality of the tractor and the mass distribution of the front and rear wheels,
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Performance test of gray cast iron
1. Hardness test The sampling position of the hardness sample of the gray cast iron cylinder block is shown in
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Observation and analysis of microstructure of gray cast iron
1. Metallographic observation The metallographic sample is taken from the gray cast iron cylinder body, cut and sampled with a
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Production of gray cast iron castings
Figure 1 shows the model and production flow chart of a high-strength gray cast iron engine cylinder block. The main
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Matrix texture and graphite state in gray cast iron
Gray cast iron is mainly composed of matrix structure and graphite, and others include eutectic, carbide and cementite eutectic. Its
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Solidification process of gray cast iron
Cast iron generally refers to multi-component iron carbon alloy with C content of 2.0% (wt%, the same below) W. Generally,
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Overview of gray cast iron
Gray cast iron is the most widely used cast iron at present. It is named for its gray section color.
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Filling characteristics of dry sand lost foam casting for gray cast iron
The series of experiments were carried out on the filling process of lost foam casting of gray cast iron by
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Mold filling characteristics of gray cast iron in lost foam casting with dry sand
Many observations and experiments have shown that the liquid metal is filled radially forward in the filling process of lost
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Gray cast iron dry sand lost foam casting
The filling process of lost foam casting has a decisive influence on the quality of castings. Due to the existence
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Influence of pouring temperature on mold filling speed in lost foam casting of gray cast iron
The changing trend of the influence of pouring temperature on the average mold filling speed of molten metal in lost
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Effect of pouring temperature on mold filling speed of gray cast iron lost foam casting
The test results are shown in the table: Pouring temperature (℃) Total mold filling time (s) Average filling speed (cm/s)
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Influence of technological factors on mold filling speed of gray cast iron lost foam casting
The theoretical research of lost foam casting started late. In the 1950s and 1960s, some research was carried out on
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Optimization and improvement of negative pressure degree in lost foam casting of gray cast iron thin wall gearbox shell
The selection of negative pressure degree is particularly critical in vacuum negative pressure lost foam casting. A large number of
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Effect of Ti on Microstructure and properties of gray cast iron brake disc
Grey cast iron is widely used in the production of automobile brake discs because it combines the main properties required
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Pouring system of gray cast iron thin wall gearbox shell before lost foam casting improvement
Based on the existing working conditions of the factory (sand box size, sprue specification, ladle specification, automatic pouring line, etc.),
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Improvement method of shrinkage casting defects of special alloy gray cast iron
1. Improve the temperature field of castings Through the simulation of the overall temperature field of the casting with the