According to the data, the total output of various castings in China in 2017 was 49.4 million tons, an increase of 4.7% over 2016. From 2002 to 2017, except for a 1.3% decline in 2015, China’s casting output has always maintained a positive growth. Since 2011, the growth rate...
In foreign countries, the analysis unit of “heat and mass flow analyzer” of Columbia University was first used in casting simulation technology. Prosenjit Das et al. Used regression analysis method and Taguchi method to optimize the process of ordinary sand mold casting of aluminum alloy materials, and obtained the...
Casting belongs to liquid metal forming technology. In actual production, casting engineers often make process according to previous experience, and lack of scientific and rigorous judgment on flow field, temperature field and defect location and size. However, casting defects often exist in the body, which is difficult to find...
Foreign technology status: Hangzhou Steam Turbine Casting and Forging Co., Ltd. pointed out in the patent technical background of “a kind of gas turbine inlet cylinder and manufacturing process”, that a Japanese company provided a domestic company with a nodular cast iron inlet cylinder casting used for gas turbine...
At present, in the field of digital casting, domestic research focuses on the development and application of digital casting database system or expert system, mainly focusing on casting technology and casting defects. In terms of casting technology, Hao Xiaoyu of North University of China and others take the widely...
According to GB / T 1173-1995, the cast aluminum alloy code is composed of the letters “Z” and “L” (they are the first letters of Chinese Pinyin of “cast” and “aluminum” respectively) and three Arabic numerals after them. The first number after ZL indicates alloy series, in which 1,...
Improve and perfect the existing mature and practical casting instruments and equipment, strive to achieve multi-functional, integrated, automatic and intelligent, and conduct decentralized online measurement and control for each link of casting production. The computer and CAD expert system module are used to connect the automatic measurement and control...
Develop new technology of investment casting mold and die material, use silica sol or ethyl silicate as binder; adopt precision, large-scale and thin-wall investment casting forming technology; adopt rapid forming technology to replace traditional wax mold forming technology, simplify process and shorten production cycle; develop wax pressing equipment, shell...
To improve the internal and external quality of castings (such as dimensional accuracy and surface roughness), reduce machining allowance, and further promote the application of high mechanization, automation and high-density wet sand molding technology such as air impact, high pressure, injection molding and extrusion molding are the main development...
Develop large-scale cupola of more than 5t / h and adopt external hot air supply and water-cooled cupola without furnace lining for continuous operation according to the needs; carry out cupola induction furnace dual melting process; Advanced desulfurization and filtration technology of molten iron is widely used (development of...