Effect of laser shock on graphitization annealing time of gray cast iron
The results show that the graphitization annealing of white cast iron takes a long time. When annealing at 800 ℃, […]
The results show that the graphitization annealing of white cast iron takes a long time. When annealing at 800 ℃, […]
Most of all kinds of porosity casting defects are located in the key parts of the cylinder block, and the
Although the surface hardness of gray cast iron after laser melting and impact is greatly improved, the microstructure toughness of
Porosity casting defect has always been the most common defect in sand casting gray iron castings. It refers to the
The solidification process of iron carbon alloy plays a decisive role in its final structure. Depending on the cooling rate,
(1) Effect of amplitude on hardness of gray cast iron Figure 1 shows the change curve of Brinell hardness of
Through the experimental study of laser melting and laser melting impact on gray cast iron, the changes of microstructure and
By imitating the surface characteristics of wear-resistant organisms, the bionic non smooth surface morphologies of point, strip and mesh are
The cylinder block is the framework of the automobile engine, with thin wall and complex structure. In the casting production,
The existence of flake graphite in the middle layer of gray cast iron seriously affects the improvement of its properties.
The graphite morphology in gray cast iron has obvious influence on the fracture process and mechanism of gray cast iron.
The figure shows the matrix structure of gray cast iron. Among them, figures (a) – (d) are the matrix structure
Fatigue wear failure of gray cast iron is a phenomenon that metal is removed from the contact area under the
For the surface of gray cast iron treated by laser alloying, the microstructures of different mixed alloy powders are obviously
The figure shows the morphology of primary austenite of gray cast iron prepared under different amplitudes. Figures (a), (b), (c)
The microstructure is the main factor affecting the fracture morphology and fracture mechanism of metal materials. The notch effect at
Since the 1990s, researchers have carried out a lot of research on the surface modification of gray cast iron, among
The results show that the laser surface biomimetic strengthening technology can effectively improve the fatigue wear resistance of gray cast
The development of cast iron technology at home and abroad requires that gray iron castings not only have good mechanical
Laser surface strengthening technology is widely used because martensite, austenite, carbide and other strengthening phases occur in the machining area.
In order to make gray cast iron more widely used, the graphite morphology in gray cast iron must be strictly
According to the body surface characteristics of wear-resistant organisms, hard elements on such non smooth surfaces are often distributed in
The figure shows the effect of scrap content on the hardness and tensile strength of gray cast iron. It can
The figure shows the fracture morphology of gray cast iron with different vibration frequencies. Among them, figures (a) – (d)
The macroscopic fatigue defects of rolling fatigue wear are mainly formed by the propagation of fatigue microcracks. Fatigue micro cracks
The figure shows the graphite morphology of gray cast iron prepared under different amplitudes. Figures (a) – (b) show the
The microstructure of grey cast iron samples with three different contents of scrap steel is shown in Fig. 1 and
The inheritance of tin in raw and auxiliary materials and the introduction of Ti element will increase the tin particles
(1) Effect on hardness of gray cast iron Fig. 1 shows the effect of vibration frequency on the hardness of
Pig iron is one of the main raw materials of gray cast iron. Figure (a) shows the metallography of pig