The strengthening and toughening treatment of 2Crl3 studied in the experiment takes the heat treatment process as a means and the steam filter valve as an example to explore the performance change and mechanism under the heat treatment process parameters. Steam valve is a valve body that controls the...
1. Product structure and technical requirements The diameter of valve body is ϕ 254 mm, the maximum outline size of the product is 1 292 mm × 867 mm × 814 mm, the net weight of the processed product is 2 430 kg, and the product structure is shown...
1. Set ice pack and extend setting time appropriately Through X-ray examination and local dissection, it is found that the internal structure of the casting block hole is relatively compact, and the original structure design does not have defects such as porosity and cold shut, which means that the...
After adjusting the production conditions to the appropriate level, the batch trial production was carried out, and it was found that the rejection rate of components exceeded 60%. According to the statistical analysis, there is a certain distribution law of the defect parts (1) The inner surface of the...
1. Component classification block The structure of the valve plate of the automobile gearbox is complex and has a large tightening force. The overall structure is shown in the figure. When designing the dynamic model, the component parting blocks are divided according to the functional structure of each part....
In recent years, with the promotion of energy saving and emission reduction, light weight and environmental protection in China, more and more aluminum alloy die casting technology is used in automobile manufacturing to produce the required components, such as gearbox housing, front cover housing, gearbox valve plate and engine...
The driving device adopts direct push electro-hydraulic push rod. The speed of the electro-hydraulic push rod is fast, up to 110 mm / s. It can adjust the speed, stroke and pushing force according to different working conditions. It has self-locking and overload automatic protection functions. The electro-hydraulic push...
The inside of valve plate also needs pouring refractory layer, and the minimum width of valve plate is determined according to the thickness of refractory layer. In order to avoid the heat transfer effect of the blind hole panel leading to the sealing performance reduction of the sealing ring,...
In order to isolate the high temperature of the pipeline, the high temperature resistant lining is poured inside the cylinder of the valve body (Fig. 1). The lining material is high alumina cement refractory castable. The fire resistance of the high alumina cement refractory castable can reach 1600 ℃...
Because of its low manufacturing cost and good comprehensive performance, steel castings are often used in the plug valve of thermal power plant. Because of its long-term operation under the harsh conditions of high temperature, high pressure and vibration, and large thick wall castings usually have some internal defects...