The geographical distribution of China’s casting industry is mainly distributed in five regions, including Henan Province, Liaoning Province, Shandong Province, […]
In 2015, the total output of castings in China was about 24420000t, an increase of 75% compared with 2010. The
The manufacturing industry of large steel castings is the basic industry of national equipment manufacturing, and its development level is
China’s steel casting parts are indispensable products for China’s equipment manufacturing, the basis of national equipment manufacturing, and occupy a
Although the development of China’s foundry industry has made great progress in recent years, the whole industry is still in
China steel casting parts manufacturing industry is the basic industry of national equipment manufacturing, especially the manufacturing of large China
1.Three dimensional simulation of physical field in mold filling process Numerical simulation of physical field in mold filling process, including
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
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
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 fatigue fracture process of metal mainly includes the process of fatigue crack nucleation and initiation, fatigue crack propagation and
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
The fatigue performance of the material is affected by both the material itself and external factors. 90% of the fatigue
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
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
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
It is found that the fatigue properties of cast iron are not directly related to the conventional mechanical properties of
Metal fatigue test generally has a long test cycle and high test cost. In order to shorten the test time
In view of the problems of high pouring temperature and easy decay of inoculant in lost foam Castings, it is
As early as the 1940s, developed countries have studied the machinability of gray cast iron. Nowadays, the cutting performance of
