Types of rack and pinion pneumatic actuators for ball valves
Rack and pinion actuator is the most commonly used pneumatic actuator. The middle of the cylinder is connected with the […]
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Welding repair technology of casting valve plug
Defect excavation and repair On site, electric grinding wheel is used to eliminate defects, and the metal luster is exposed
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Practical application of welding repair technology for casting plug valve
The boiler equipment of 3 × 350 MW supercritical unit in a power generation company is provided by Dongfang Boiler
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Dynamic torque characteristics of ball valve during opening and closing
The structure and operation characteristics of the ball valve determine that the opening torque of the ball valve is unbalanced,
Scientific
Dimensional error from prototype to wax pattern in SLS rapid investment casting
The wax impregnation process plays an important role in improving the strength and surface quality of the specimen. According to
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Welding repair of casting block valve
Welding preparation (1) in order to prevent the hardened layer and carburized layer produced in the repair welding groove during
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Vibration mould of centrifugal casting machine
According to the structural characteristics of the feeding rotor of the centrifugal casting machine, the transfer matrix method is used
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Experimental setup of squeeze casting
The experimental setup in the study is consistent with the experimental setup described above, and the thermophysical parameters of relevant
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Welding technology of casting block valve
The 2 × 330 MW subcritical boiler unit of an aluminum Power Generation Co., Ltd. is sg-1170 / 17.5-m722. It
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Calculation model of mold support damping for centrifugal casting machine
The normal damping between single ball and raceway is as follows: Where α is the half width of the Hertz
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Prospect of casting process of 100 ton ductile iron nuclear spent fuel container
Germany has realized the mass production of 100 ton nodular iron nuclear spent fuel containers, and has produced more than
Scientific
Calculation model of mold support stiffness for centrifugal casting machine
The load of self-aligning ball bearing is shared equally by two rows of rolling elements. Then for each row of
Scientific
Application of rotor dynamics in alloy centrifugal casting
The first paper about rotor dynamics in history is on centrifugal force of rotating shaft published by Rankine in 1869.
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Defects in lost foam casting process
① Because the preparatory work in the early stage of production is not in place, the theoretical negative pressure value
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Application of squeeze casting
In the field of automobile, rail transit and aerospace equipment manufacturing, lightweight materials and manufacturing technology occupy a very important
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Study on casting process optimization of 100 ton ductile iron nuclear spent fuel container
Based on the simulation analysis of the casting process of 100 ton ductile iron nuclear spent fuel container, the 45
Scientific
Comparison and optimization of casting process for ductile iron nuclear spent fuel container
In order to eliminate the adverse effect of hot spot, reduce the defects of ductile iron spent fuel container and
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The advantage of lost mold in casting process
(1) When using polystyrene foam in white mold manufacture, its density is very small, and the labor intensity of the
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Solidification of hot spot of ductile iron nuclear spent fuel container under different casting conditions
Figure 1 shows the solidification process of the hot spot of nodular iron nuclear spent fuel container under the conditions
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Composition of fire resistant coating for lost foam casting
The refractory coating for lost foam casting consists of refractory aggregate, carrier (solvent), suspending agent, binder and other additives. ①
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Solidification characteristics of nodular cast iron at hot spot of nuclear spent fuel container
According to the simulation results and the experimental study of 45 ° test block, the ductile iron spent fuel container
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The working principle of fire resistant coating in Lost Foam Casting
One layer of refractory coating hung on the outer surface of the foam plastic model is one of the three
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Effect of solidification process and mold vibration on wall thickness of furnace tube in centrifugal casting
In centrifugal casting of furnace tube, after pouring molten steel into the mold, on the one hand, the molten steel
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Relationship between graphite morphology and properties of nodular cast iron sector test block for nuclear spent fuel container
The relationship between the number of graphite balls and the properties of 45 ° sector block is shown in Figure
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Technological process of lost foam casting
The technological process of lost foam casting is divided into white area and black area. (1) the process of lost
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Differential equation of motion for vibration performance system of centrifugal casting mold
The rotor and foundation of centrifugal casting were analyzed separately, and the differential equations of motion were obtained. The rotor
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Working principle of lost foam casting technology in foundry production
Lost foam casting technology is usually referred to as lost foam casting in English, which is also called as lost
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Microstructure of nodular cast iron sector test block for nuclear spent fuel container
Metallographic examination shall be carried out in accordance with GB / t9411. The graphite morphology and matrix structure at different
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Installation of protective gas device on semi continuous casting machine and test results of oxygen content
The test results of 650 semi continuous casting machine equipped with nitrogen protection device are analyzed, which provides evidence for
Scientific
Nodular cast iron sector test block for nuclear spent fuel container
The central section of the 45 ° fan-shaped test block (as shown in Fig. 4-15) is selected for the sampling