Effect of adding cold iron on simulation results in nodular cast iron pouring of hub support
According to the comparison of the numerical simulation results of the scheme, it is found that by reasonably increasing the […]
According to the comparison of the numerical simulation results of the scheme, it is found that by reasonably increasing the […]
It can be found from the analysis that simply changing the height of the pouring riser of nodular cast iron
The material of a cast impeller is aluminum silicon alloy zalsi9cu2mg. The cast impeller is not allowed to have casting
With the development of industry, higher requirements are put forward for the performance and service life of structural parts made
Porosity casting defects are holes that appear in the interior or surface of the casting, and the cross section is
1. Improve the temperature field of castings Through the simulation of the overall temperature field of the casting with the
1. Tendency shrinkage defects of gray iron castings after processing In the process of design and development of gray iron
In casting production, due to the uneven wall thickness of the gray cast iron cylinder head, it is easy to
The internal shrinkage porosity and shrinkage cavity of the casting produced by the original lost foam casting process is relatively
Figure 1 shows the relationship between the tensile strength, Brinell hardness and w (TI) content of the test sample, in
The structure of special alloy gray cast iron frame gray cast iron used in the power system of high-speed railway
According to the solidification sequence of impeller casting, the timely feeding of riser can not be obtained at the thick
There are many reasons for shrinkage and porosity casting defects in castings. Deficiencies in product structure, smelting process, core sand,
With the continuous improvement of the quality requirements of diesel engine products in the whole machine factory, higher and higher
Resin sand is used for molding and core making. The compressive strength of resin sand is 5~7 kPa. Zircon powder
Aluminum alloy castings are widely used in railway, military, aerospace, automotive, medical and other fields because of their good comprehensive
With the implementation of the “Three Guarantees” responsibility system in the international automobile industry, the quality requirements of automobile parts
Most of all kinds of porosity casting defects are located in the key parts of the cylinder block, and the
Porosity casting defect has always been the most common defect in sand casting gray iron castings. It refers to the
There are many tests for statistical distribution, such as KS test, chi square test, etc. from the perspective of graphics,
Aiming at the wet mold clay sand casting process of railway steel castings, the research is carried out from the
The coupler tongue produced by the final process scheme of early steel casting trial production has successfully passed the inspection
The casting simulation of four branch cast steel joints is carried out by using ProCAST casting simulation software to explore
In view of various casting defects in the trial production of railway steel castings, combined with the actual production conditions
As shown in the table, the frequency statistics of casting defect size can be obtained by summarizing the sizes of
Casting defect data of 144 large and small sections of cast steel joints, including 74 sections with casting defects, accounting
Cold crack refers to the crack caused by the local casting stress greater than the ultimate strength of the alloy
According to the above casting defect analysis and countermeasures, a new process diagram is finally formed, as shown in Figure
(1) The section diagram corresponding to the casting defect I is shown in Figure 1. The casting defect I occurs
As shown in Figure 1, because the shape of casting defects in the node is irregular, the maximum value of