Characteristic carbon benefit Modeling of Sand Mold casting process Design
The products of traditional manufacturing industry are widely used in various industries, which produce a lot of economic and social […]
The products of traditional manufacturing industry are widely used in various industries, which produce a lot of economic and social […]
The dynamic mechanical behavior of vermicular graphite cast iron GJV450 under high temperature and high strain rate was studied. The
In orthogonal turning, only one straight cutting edge is involved in the cutting, and the cutting edge is perpendicular to
The experiment is divided into two parts, the first part is the static tensile test of vermicular graphite cast iron,
There are many commonly used constitutive equations of metallic materials, including Power-Law model, Zerilli-Arstrong model, Johnson-Cook model and so on.
1. Data processing of tensile experiment. Figure 1 shows the stress-strain curve of static tensile test. As can be seen
In the tool matching model established by Niu Jiahui, polycrystalline cubic boron nitride (PCBN) tool ranks third among the tools
Figure 1 shows the small Hopkinson pressure bar equipment used in this experiment. Figure 2 is a schematic diagram of
Vermicular graphite cast iron, as a material that can replace gray cast iron, will be widely used in the future.
Because the chromium white cast iron used in the experiment is brittle material and has not been heat treated, the
At present, there are few studies on the cutting simulation of vermicular cast iron. According to the different three phases,
Impact toughness is an important index of large wear-resistant plate. It refers to the ability of material to absorb plastic
In the research and application of vermicular cast iron, Europe is in the leading position in the world. In the
It can be seen from Figure 1 that compared with the normal pressure, the hardness of the alloy can be
In the 1960s, China began to study vermicular cast iron, but the production and processing of vermicular cast iron is
Different from equilibrium solidification, the solidification process of alloy melt under pressure is controlled by nucleation and subsequent crystal growth.
Traditional sand casting often has design limitations in process, especially for the forming of complex castings, the differences of casting
As shown in the figure, the phase diagram of gjv450 vermicular graphite cast iron seen under the laser microscope after
The samples of Hypoeutectic and hypoeutectic chromium white cast iron were prepared by pressure casting. The effect of solidification pressure
It has been proved that different types of carbides have different hardness. The purpose of different casting processes is to
The results show that the morphology and distribution of primary phase and eutectic structure in the solidification structure of chromium
Besides discussing the interface structure, which is the mechanism of atom stacking and crystal morphology, we also need to discuss
In addition to the fine grain strengthening effect under pressure, the effect of pressure on carbide morphology is also worth
Crystal growth is a process in which the atoms in the liquid phase migrate and stack to the surface of
From the point of view of thermodynamics, primary carbides should only exist in hypereutectic alloy. But in fact, it can
Pressure casting is an advanced near net shape casting process. The melt bears high pressure after pouring and filling until
By developing the appropriate combination of microstructure phases, cast iron can obtain the required properties in any specific application. These
Because the composition of low chromium white cast iron alloy 1 is far away from eutectic point, the carbides are
When the volume fraction of carbide with high hardness in the solidification structure of Cr based alloy is 20 ~
In the solidification process of Hypoeutectic chromium white cast iron, the primary phase is austenite, the carbides in the solidification