According to the characteristics of Si Mn alloyed ductile iron grinding ball, the heat treatment equipment should have the characteristics of high cost performance and low production cost. After years of efforts, we have developed automatic heat treatment line and grinding ball water-based heat treatment production line system. The...
Casting is an important teaching module of metalworking practice course. Its teaching content is composed of sand casting, lost foam casting and 3D precision casting. Due to the limited internship time, there is only one day for practical study of sand casting. The original practice content of sand casting...
The variation law of interfacial heat transfer coefficient of typical ZL101 Aluminum alloy ring sand castings with height of 150 mm, thickness of 50 mm, internal and external radius of 30 mm / 80 mm, 50 mm / 100 mm and 70 mm / 120 mm and flat sand...
Based on the temperature field data measured by pouring experiment and the established matlab inverse calculation program, the interface heat flow, interface heat transfer coefficient and temperature field are inversely calculated. The changes of internal and external interface heat flow and interface heat transfer coefficient with the temperature of...
It mainly arranges and analyzes the measured and back calculated data, calculates the interface heat flow and interface heat transfer coefficient through the measured temperature data, and analyzes the variation law. (1) The measured data were collected and processed into a form that can be calculated by MATLAB back...
At present, the research on the inverse calculation of interfacial heat conduction in sand mold casting process mainly focuses on the metal mold casting process, while the more widely used sand mold casting process is lack of systematic and in-depth research. The research on the cross-sectional heat transfer coefficient...
In order to overcome the shortcomings in the traditional production of ADI grinding balls, it is necessary to find cheap alloy combinations from materials to replace Mo, Cu and other precious alloy elements. Through years of practice, research and improvement, the production of nodular cast iron grinding balls with...
High chromium white cast iron is selected as the grinding ball of high chromium cast iron, and the mass fraction of chromium is generally 10%~13%. Most of them adopt the production process of iron mould sand coating, and carry out oil quenching+tempering heat treatment process. After adding chromium to...
In the process of metal solidification, the interfacial heat transfer coefficient is affected by many factors, such as sand casting and mold material, sand mold casting structure, sand mold casting process and so on. Due to the complexity of sand mold casting / mold interface, it is impossible to...
Low chromium white cast iron is used as the grinding ball of low chromium cast iron. The chromium content is generally 1%~3%, and the iron mold casting process is generally used. Low chromium cast iron grinding ball is relatively cheap because of its simple production process, low alloy content,...