The defects can not be reduced to a qualified level by adjusting the pouring temperature. Therefore, lost foam casting thin-walled […]
Referring to machine tool castings in the early stage, considering the factor of thin wall, the pouring temperature was increased
The lost foam casting thin-walled gray cast iron gearbox shell casting with the improved gating system is adopted. The qualification
Lost foam casting has the advantages of high dimensional accuracy, smooth surface and less pollution. Compared with the traditional molding
The hardness changes of gray cast iron after laser melting and impact at different annealing temperatures are shown in the
The nucleation and growth of gray cast iron graphite are gradually formed during heating. The nucleation position of gray cast
Gray cast iron is widely used in various mechanical parts, such as automobile ventilation plate, gear box, bed and so
The multi-element alloy additive is developed and designed by China Yituo on the basis of previous application experience according to
Developed countries carried out the research on the machinability of gray cast iron as early as the 1940s. After long-term
Figure 1 and Figure 2 respectively show the graphite morphology and matrix structure of two kinds of gray cast iron
As shown in the table, the mechanical properties of gray cast iron poured in two different heats are shown. It
When the rotating speed and feed rate are constant, the cutting length of the cutting edge for cutting each sample
1.Graphite morphology Figure 4 shows the graphite morphology of two groups of gray cast iron samples. It can be seen
When the rotating speed and feed rate are constant, the cutting length of each sample cut by gray cast iron
The influence of reassembly of the same blade at different cutting depths on the cutting force is shown in the
The tensile strength of gray iron castings has been increased from 200 MPa to 250 MPa or even 300 MPa.
One of the important physical parameters in the process of cutting gray cast iron is cutting force. In the process
1.Purification degree of molten iron Some high melting point and high hardness particles remain in the molten iron and become
In the gray cast iron cutting force measurement test, the different installation position of the turning tool and the sticking
Another important link in obtaining high-performance gray cast iron is inoculation treatment. Before the solidification of molten iron, a certain
In the process of gray cast iron cutting, the cutting force of gray cast iron directly determines the wear, damage,
Because the flake graphite in gray cast iron has good chip breaking and tool lubrication, the machinability of gray cast
Iron carbon alloys with carbon content greater than 2.14% or eutectic structure in the structure are called cast iron. It
Based on the above experimental results, in order to verify the effect of molybdenum on the tensile strength of gray
Molybdenum is an element with strong affinity with carbon, which is conducive to the formation of the second phase particles
According to the different matrix structure, it can be divided into ferrite matrix gray cast iron, pearlite ferrite matrix gray
Graphite parameters such as type, content and length in gray cast iron have an important influence on its tensile strength.
Fig. 1 shows the scanning electron microscope BSE photos of gray cast iron samples with different molybdenum content. It can
Figure 1 and Figure 2 show the microstructure of gray cast iron corroded by 4% Vol. nitric acid alcohol under
Figure 1 shows the graphite morphology of samples S1 ~ S4 in Table 1 observed under scanning electron microscope. According
