Cooling characteristics of chill and metal mold for nodular cast iron sector test block of spent nuclear fuel vessel
The temperature curves of chill and metal mold are shown in Fig. 1 and Fig. 2 respectively. In about 18 […]
The temperature curves of chill and metal mold are shown in Fig. 1 and Fig. 2 respectively. In about 18 […]
According to the statistics of nonferrous metal processing industry association, the comprehensive output of copper processing materials in China in
Aluminum alloy can replace most of the parts, and steel for automobile has a large proportion. Most of the steel
Using high-purity pig iron as the main raw material, the high-temperature pure and high-quality molten iron meeting the composition requirements
The so-called hot forming, fully known as hot stamping forming, is a new technology specially used for automotive high-strength steel
1.Analysis of temperature field in filling process The actual production requires that the minimum temperature distribution is at the overflow
The high temperature resistant blind valve is suitable for the gas pipeline of the producer. Producer gas is coarse hot
At present, with the development trend of automobile lightweight, high strength steel and aluminum alloy become two kinds of materials
Figure 1 is the flow field simulation diagram of automobile steering wheel formed by opposite side casting. It can be
Thin wall In order to meet the needs of the era of low emission and lightweight, promote global sustainable development,
Establishment of casting model A356 aluminum alloy is selected as the die casting material. The casting aluminum alloy A356 is
It can be seen from the characteristics of squeeze casting that the temperature distribution and stress distribution inside the casting
With the development of globalization, more and more attention has been paid to improving the engine emission temperature and realizing
In the field of automobile, rail transit and aerospace equipment manufacturing, lightweight materials and manufacturing technology occupy a very important
The metal in the filling process can be considered as incompressible fluid, which follows the hydrodynamics law and can be
As shown in Figure 1, due to the symmetrical arrangement of rollers, the weight of the mold is shared equally
In the past, when casting exhaust pipe, the main forming mode was wet sand gravity casting, and the materials were
For the shrinkage porosity defect, it is opened at the defect position, as shown in the figure. It is found
Because of the eccentric mass distribution, the error of the outer circle of the mold, the error of the outer
In the future automobile production, it is inevitable to realize low emission and lightweight. Therefore, we should try our best
When the pressure difference is enough (35kpa), the influence of chill thickness and casting thickness on defect formation is discussed.
In order to better verify the performance of the designed exhaust manifold, the exhaust manifold performance test is carried out,
The thickness of chill is designed according to the chill of gray iron casting, as shown in the formula Where
The research adopts the flat plate structure, the gap gating system and the low pressure pouring. The design of plate
The service conditions of ductile iron nuclear spent fuel container are harsh, the performance requirements are strict, especially the low
In order to solve various defects and problems of large section ductile iron castings, scholars at home and abroad have
First of all, in order to further compare the influence of the newly designed stamping and welding exhaust manifold and
The results show that tempering temperature has obvious effect on the quantity and morphology of carbides in 30cr13nb0.1 steel, which
In the overall optimization scheme, in order to improve the exhaust efficiency of the exhaust manifold, ensure that the exhaust
The effect of tempering temperature on the impact properties of 30cr13nb0.1 steel is shown in Fig. 1. It can be