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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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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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 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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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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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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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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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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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
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Production process of casting defects in nodular cast iron roller
The basic structure of roller casting includes barrel and shaft head, which is in the shape of revolving body. The
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Analysis and prevention of broken teeth of nodular cast iron gears
The casting is molded in a box of 2 pieces, with 550 kg spheroidizing treatment package, 10 boxes and 3
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Broken teeth of Ductile Iron Gears
The structure diagram of QT600-3 gear casting produced by ZHY casting is shown in Figure 1, and the overall dimension
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Effect of niobium on matrix structure of ball milled cast iron
The ferrite content in the matrix structure of ductile iron affects the carbon content of the matrix, thus affecting the
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Casting process design of a diesel engine case
1. Pouring position and parting surface According to the practical production experience for many years and the principle of accurate
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3D printing process for V-type gas engine cylinder block casting
The structure of cylinder block casting is complex, and there are many internal cavities. For this kind of structure casting,
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Annealing residual stress removal and tensile strength and hardness of high strength cylinder head castings
Three kinds of annealing process were selected, and the annealing time was 18 h, 11 h and 8 h, respectively.
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Effect of reducing residual stress in mold insulation of high strength cylinder head casting on tensile strength and hardness
The structure of 11 l engine cylinder head casting is shown in Figure 1, and the overall dimension of the
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Process optimization for reducing stress of high strength cylinder head casting
Through the above analysis, the process was optimized: the furnace holding time was extended to about 8 h, the temperature
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Structure reduction and stress relief process of high strength cylinder head casting
The structure of a 13 l cylinder head casting is shown in Figure 1, and the overall dimension of the
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Effect of silicon solution strengthening on properties of nodular cast iron
1) The strength and elongation properties of y-block hot metal casting were compared. It can be seen that with the
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Analysis of filling velocity field of gating system for large planetary carrier steel castings
Scheme 1 According to the simulation results in Fig. 1 (E), the whole filling process takes about 19.6 s, which
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Material control and test method of large vermicular graphite iron castings
In order to control the content of some trace elements (Ti, Pb, etc.) in Vermicular Graphite Cast Iron and ensure
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Cold bending cracking of martensitic stainless steel castings
The working conditions of hydraulic turbine equipment are strict, and runner, as the core component of hydraulic turbine, has been
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Control points of cold depth of chilled cast iron camshaft and hardness of cam peach tip
1.Key points of cold depth control (1) cold iron. In the early stage of product development, according to its own
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Technical requirements for cold depth of chilled cast iron camshaft and hardness of cam peach tip
When the chemical composition and matrix hardness of the hot metal are controlled in the small range mentioned above, the
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Proportional solidification process of pancake iron castings
1.Analysis of process characteristics Pancake iron castings (diameter and thickness) δ Although the shape of the casting is simple, it
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Analysis of stress field during solidification process of track shoe in Lost Foam Casting
The solidification process of liquid metal is divided into three phases: liquid phase, solid / liquid phase coexistence and solid
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Effect of pouring temperature on defects of track shoes in Lost foam Casting Process
In the solidification process, because of the wide range of crystallization temperature, the basic metal skeleton is formed first when
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Pre treatment of numerical simulation for solidification process of track shoes in EPC Process
Geometric modeling The heat transfer between the liquid metal and the pattern occurs during the filling process Where, ρ P
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Numerical simulation of solidification process of track shoes in Lost Foam Casting Process Based on ProCAST
Crawler shoe is the key component of roadheader walking mechanism, which is connected by pin to form crawler shoe chain.