Application of gradient riser in production of high carbon steel roll casting
The typical specification characteristics of section steel universal edging roll and special-shaped steel s-roll products are that the roll neck […]
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Effective application of vermicular graphite cast iron in internal combustion engine
Internal combustion engine occupies a very important social position in power machinery. The internal combustion engine has high thermal efficiency,
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Riser design of high carbon steel roll casting
Riser is a kind of structure for storing liquid metal in the mold, which is used to compensate the possible
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Analysis of graphite growth principle in Vermicular Graphite Cast Iron Technology
In order to have an effective understanding of vermicular graphite cast iron technology, we must have a comprehensive understanding of
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Riser design of high carbon steel roll casting
Through the observation of the defects, it is found that the defects are shrinkage porosity and shrinkage cavity, which are
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Effect of vermicularization rate on internal porosity of castings
Diesel engine is widely used, working environment is poor, working time is long. Because the cylinder head of diesel engine
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Finite element analysis of casting process scheme for extra large crusher frame
1. Static structural analysis Finite element static structural analysis is carried out for the box type and deep cavity type
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Often neglected metallurgical factors affecting shrinkage cavity and porosity of ductile iron
Although the metallurgical quality of molten iron is affected by many factors, foundry workers have found the quantitative index of
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Scanning detection process and image generation of casting water cooled shell sample
After the sample navigation is completed, the detection can be started, as shown in Figure 1. Move the sample table
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Process improvement of valve plate defect of automobile gearbox in die casting production
1. Set ice pack and extend setting time appropriately Through X-ray examination and local dissection, it is found that the
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Structural characteristics of water cooling shell and analysis of internal defects of castings
As shown in Figure 1, a low-pressure casting water-cooled housing for electric bus is in the shape of a drum
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The second and third trial production of cylinder head castings
The original material of zc170 cylinder head is HT300, the technical requirements are WCu = 0.5% ~ 0.8%, WCR =
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Analysis of defects of valve plate of automobile gearbox in die casting production
After adjusting the production conditions to the appropriate level, the batch trial production was carried out, and it was found
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First trial production of cylinder head casting
1. Primary raw materials Q12 pig iron, industrial scrap, vermicularizing agent (wre = 9% – 11%, WMG = 4% –
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Original production process for defects of valve plate of automobile gearbox in die casting production
1. Component classification block The structure of the valve plate of the automobile gearbox is complex and has a large
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Controversy on the influence of metallurgical factors on shrinkage cavity and porosity of ductile iron
It is very important to select the appropriate carbon equivalent or carbon silicon content for the production of sound castings
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Effect of oxide on nucleation of graphite in cast iron
In the solidification process of metal nonmetal system, nonmetal matter can be the core of metal crystallization, but metal can
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Oxygen content in cast iron
Although the atomic radius of oxygen is very small (0.66), it is a highly active element and can form compounds
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Effect of metallurgical factors on shrinkage cavity and porosity of ductile iron
1. Carbon, silicon and carbon equivalent When the carbon equivalent is at the eutectic point, the casting process performance is
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Oxygen element in cast iron
Among the three gas elements, the solubility of oxygen in liquid or solid cast iron is the smallest, but the
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Analysis and prevention measures of blowhole defect in nodular cast iron roller
1. Defect analysis (1) The inner cavity of the cylinder body is a long strip-shaped sand core, and the gas
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The source of nitrogen in cast iron
Nitrogen contained in cast iron mainly comes from atmosphere, various furnace charges and molds. Generally, nitrogen is not contained in
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Analysis and preventive measures of sand hole and slag hole defect in nodular cast iron roller
1. Defect analysis (1) The slag cleaning treatment of molten iron is not complete; (2) The results show that the
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Nitrogen element in cast iron
There are two forms of nitrogen in cast iron: one is dissolved nitrogen; The other is to form nitride with
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Analysis and preventive measures of shrinkage hole defect of nodular cast iron roller shaft head
1. Defect analysis (1) There is a great difference in the wall thickness between the cylinder body and the shaft
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Development status of cast heat resistant aluminum alloy
Cast heat-resistant aluminum alloy is a kind of aluminum alloy which is prepared by casting, has good oxidation resistance and
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Effect of solidification pressure on growth mode of primary carbide in chromium white cast iron
In alloy 2, the nucleation and growth of primary carbides are in the high temperature liquid phase, and there is
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Turbine 360 ° Strength of low pressure inner cylinder with volute inlet
In China’s power industry system, many high-power units have been running for a long time, and there are deviations between
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Effect of solidification pressure on eutectic structure of cast chromium white cast iron
The content and spacing of eutectic structure, the content and distribution of different phases in eutectic structure of two kinds
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Analysis and preventive measures of casting deformation defect of nodular cast iron roller
1. Defect analysis (1) The stiffness of the base frame of the model is not enough, and the model is