Effect of casting defects on strength of hydraulic valve body
With hydraulic valve body as carrier, the filling and solidification process of valve body casting were studied by combining theoretical […]
With hydraulic valve body as carrier, the filling and solidification process of valve body casting were studied by combining theoretical […]
Hydraulic valves are subjected to complex and variable loads during their operation. Therefore, the strength of the valve body must
As one of the key components in the hydraulic transmission system, the working environment of the hydraulic valve is extremely
Based on one hydraulic valve body and two hydraulic multi way valve body, the design method of casting and pouring
Hydraulic casting valve is the main component of hydraulic system, which controls the pressure, flow and direction of oil in
In the process of casting simulation, the pouring system, grid division and calculation conditions are the same as the above,
The filling process of liquid metal is a non-isothermal flow process with heat loss and solidification.The metal fluid flow should
The main valve holes of multi-way valves, change-over valves and other valves are thin, with many oil grooves and different
1.Selection of gate valve body blank This method is suitable for the high pressure self tight seal gate valve body
Based on the analysis of simulation results, the casting process needs to be optimized to eliminate the casting solidification defects.
As a high load precision mechanical part, the hydraulic valve body has the requirements of high pressure resistance, fatigue resistance
Because hot joints will occur in large and thick parts during the cooling process of castings, and casting defects such
The fracture morphology of the cast ti-48al-2cr-2nb alloy with total strain range δ ε (T) = ± 0.7% and service
After filling, in order to analyze casting problems such as subsequent solidification defects, the solidification temperature field is further analyzed.
Introduce the model into ProCast software and divide it into grid. After dividing the grid, check the quality of the
Cylindrical billets are cut lengthwise on a 100 mm diameter billet and processed into equal-section samples with a working section
The net weight of machine tool body parts is 1762.75 kg, and the overall contour size of parts is 1985
Machining centers are divided into horizontal and vertical machining centers according to the position relationship between the spindle and the
The surface of high nickel ductile iron samples during corrosion process was observed. The results are similar to that of
By observing the surface of the sample during the corrosion process, no obvious bubbles were found on the surface of
The unit area gain of high nickel ductile iron at 900 C for different working hours is recorded in Figure
The prepared sample is heated in a resistance furnace and weighed with an electronic balance.Figure 1 shows the measurement results
In order to understand the oxidation conditions at the cracks, elemental analyses are carried out on the areas of Fig.
The sample size for thermal fatigue test is 15 mm x 10 mm x 10 mm.To eliminate the influence of
The temperature range of the thermal cycle (T) is equal to the upper limit temperature of the thermal cycle (T)
1. Selection and determination of detection method As a key part of the pump body, the impeller of desulfurization pump
1. Application of Tool Composite Technology In the process of steering knuckle of automobile parts, tool compound technology has outstanding
1. Filling Process Analysis The filling process simulation analysis of Figure 5 shows that the filling time of the casting
The flow of liquid metal in filling process has a great influence on the quality of casting. If the design
The surface of the blade of the sulfur pump impeller and the surface of the blade are calculated to achieve