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Russian scientists develop new technology for seamless steel pipe making- The 20th China (Guangzhou ) Int’l tube & pipe Processing Equipment Exhibition
9/20/2018 管材展-鋼管展-steel tube expo-tube &pipe expo |
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A research team from the Russia’s National University of Science & Technology’s MISIS Department of Pressure Metal Treatment has developed a new technology which simplifies the process of hot rolling seamless pipes made of alloy and high-alloy steel. The consistent use of two simple male punches, tools that turn an unruly steel blank into a hollow “sleeve”, is a distinctive feature of the technology. The research article on this development to accelerate the process and improve the wear resistance of tools has been published in The International Journal of Advanced Manufacturing Technology.
The standard technology of hot rolling seamless pipes made of alloy steel can be divided into several stages: cutting long solid metal semi-finished “bar” products into short billets, deep drilling the workpiece to prepare it for firmware, and then heating the workpiece in the furnace. This is followed by the “firmware” — the transformation of the workpiece into a hollow sleeve roll and simple male punches, and finally, rolling the sleeve into a tube on a continuous mill. The main reason for this process’s low productivity is the rapid wear of the simple male punches, as they need to be replaced after almost every firmware is made and also commonly lead to production defects.
NUST MISIS scientists have developed a technology that can extend the life of the simple male punches several times over. They proposed using a two-stage method of firmware on the cross-screw rolling mill using a lubricant and coolant. The developed technology of hot rolling pipes made of alloy steel and alloys is noticeably more effective and has been implemented at multiple enterprises of the Russian pipe industry. Thanks to the improvement of the simple male punches and the use of liquid glass lubricant and water cooling in the process, the wear resistance of simple male punches has been increased by 5-6 times.
In the experimental part of the studies, the NUST MISIS scientists obtained seamless pipes made of alloy steel X10CrNiTi18—10 with a diameter from 90 to 270 mm. The work was conducted both at the NUST MISIS Department of Pressure Metal Treatment and in production conditions using EZTM’s equipment with the support of Vyksa Steel Works and Volzhsky Pipe Plant.
管材展-鋼管展-2019廣州國際管材及管材加工設備展－中國展出效果最好的管材展-巨浪展覽
- The 20th China (Guangzhou ) Int’l tube & pipe Processing Equipment Exhibition
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