Future development of China’s foundry industry
Foundry industry is a basic industry related to the national economy and the people’s livelihood. After China’s entry into WTO, […]
Foundry industry is a basic industry related to the national economy and the people’s livelihood. After China’s entry into WTO, […]
There are more than 30 large-scale casting production enterprises in China, most of which are large and medium-sized state-owned enterprises.
Casting technology is a metal hot working process with a long history. It is one of the basic processes of
Figure 1 shows the aluminum alloy control arm. The material is A356.2 alloy, and the maximum overall dimension is 320mm
At present, a considerable number of foundry manufacturers have not cultivated their core competitiveness, seriously lack market competitiveness, passively cope
Over the years, among the world casting output data published by modern casting magazine of American Foundry Association, China’s casting
The airbag support arm is the core support part of the vehicle wheel drive axle, as shown in Figure 1.
Foundry industry has always enjoyed the title of “mother of industry” and occupies a very important position in the national
By controlling the size and distribution of graphite diameter and the spherical regularity of graphite, the correlation degree with the
The steering knuckle is a chassis safety part, which has the functions of connection, bearing and steering, and the service
Figure 1 (a) and figure 1 (b) show the hardness and strength changes of three groups of different samples respectively.
The fatigue fracture process of metal mainly includes the process of fatigue crack nucleation and initiation, fatigue crack propagation and
Fig. 1 shows the microstructure SEM of three groups of ductile iron samples. It can be seen from the figure
1、 Metallographic observation Metallographic structure observation includes sampling, grinding, polishing, etching, cleaning, microscope observation and other steps. Metallographic specimen size
The new product development of tractor complex castings by Moldless sand casting has the following advantages. (1) It has the
The cylinder block, cylinder head and chassis box of tractor are complex castings, which have the characteristics of large mold
General materials contain some alloy compound phases. The existence of alloy compound phases enhances the matrix strength, hinders the crack
The fatigue performance of the material is affected by both the material itself and external factors. 90% of the fatigue
For cast iron, there will always be some unavoidable casting defects, such as shrinkage cavity and porosity. Casting defects have
Plg-100 high-frequency fatigue testing machine is used for high-frequency tension compression fatigue test of gray cast iron. The number of
The tensile strength of gray cast iron treated with 75 ferrosilicon inoculant is 6.5% lower than that of gray cast
The table shows the effects of the same alloying and different inoculants on the mechanical properties of gray cast iron.
The deformation of any material under external load will be affected by its own microstructure and properties and external environmental
Firstly, the fatigue crack nucleates at the stress concentration. Under the action of stress, the fatigue crack begins to expand.
The specific test process is as follows: 1.Use WAW-Y500 universal material testing machine to measure the tensile strength of the
For gray cast iron, its mechanical properties mainly depend on the matrix structure and flake graphite in it. The shape
Nodular cast iron obtains spherical graphite through inoculation and spheroidization. Because the graphite is spherical, it is not easy to
Furan resin self hardening sand is used for molding and core making, and alcohol based zircon coating is used to
In industrial development, metallurgical related equipment and material manufacturing is the basic link of industrial development, and large steel castings
The instantaneous fracture zone of fatigue crack is the area where the material is unstable and suddenly fractured. Due to