With the change of the times, China’s industry has been progressing and developing constantly, which benefits from the steady progress of China’s economy and society and the continuous improvement of science and technology, which provide a strong guarantee and support for the rapid development of industry. Now, the development...
Insufficient attention to the basic research work of lost foam casting technology, too little investment and low level have become hidden dangers and crises for the further industrial application of technology. At present, there is a widespread guiding ideology of eager for quick success and instant benefit, including some...
As early as the late 1970s, China has studied the application of lost foam casting in mass production, which is almost synchronized with foreign advanced countries. However, due to various reasons, there is a big gap between China and foreign advanced countries in terms of the depth of research,...
The production methods of engine connecting rods in China include traditional forging, casting and powder metallurgy, and the research and development of composite connecting rods. Since the 1990s, more than 90% of connecting rods have been produced by die forging. The casting process has basically not been adopted, and...
As the largest automobile production and consumption country in the world, China has huge development space and broad prospects for the cast iron auto parts industry. With the continuous development and progress of science and technology, people continue to put forward higher requirements for the performance and quality of...
The figure is the schematic diagram of horizontal pouring bimetallic composite wear-resistant casting. Horizontal pouring refers to the horizontal position modeling of the mold, closing the box and pouring. The working surface of the composite wear-resistant casting adopts wear-resistant cast iron and the non working surface adopts high-quality carbon...
Qi Jiyu found that the material, derusting method, thickness and metal liquid temperature of the diaphragm may affect the bonding quality of the composite layer. When the separator is treated by pickling and drying, the high chromium cast iron and carbon steel on both sides of the separator have...
In order to improve the toughness and wear resistance of Hypoeutectic, eutectic or hypereutectic high chromium cast iron, scholars at home and abroad have done a lot of research work on carbide refinement and toughness improvement of high chromium cast iron. For example, in view of the fact that...
China has also carried out numerical simulation of casting solidification since 1978. Although it started late, it has also developed rapidly. Firstly, many colleges and universities and professional research institutes have carried out extensive basic research on Numerical Simulation of casting solidification. Representative in this regard are Dalian University...
In terms of detection methods, GB7233-09 focuses on the near-field area of ultrasonic flaw detection, and adds a near-field resolution probe. The so-called near-field area is the area where a series of maximum and minimum values of sound pressure appear near the wave source due to wave interference. It...