With the continued stagnation of the light industry of China's plate rolling machine, the import volume of low-grade plate rolling machine steel has been rising. It is expected that the steel import of plate rolling machine will be greatly enriched, especially the steel of the whole plate rolling machine cavity is temporarily The pattern of imports within time is difficult to change. China's steel imports for coiling machines mainly come from administrative divisions such as Oman, Germany, Sweden, Austria, and South Korea. Compared with the domestic advanced level of domestically-made alloy coil steel, such as Sweden, Germany, the United States, Oman, France, etc., there is a certain gap in type, quality, size specifications and performance, and it is difficult to meet the needs of high-end shopping malls.

The coiling machine steel is basically based on three series of hot work coiling machine steel, cold work coiling machine steel and plastic coiling machine steel. The general coil steel in my country used to be surplus, but the high-end, fine and short-lived high-quality coil steel has a big gap with overseas. The important difference is the turbidity index. It is simply occupying the entire high-end market of plate rolling machine steel. Moreover, the price of imported plate rolling machine steel is many or ten times higher than that of similar domestic products.

The normal life of the domestically-made H13 steel die-casting coiling machine is 30,000 to 50,000 die-times, while the imported high-quality H13 steel die-casting coiling machine has a lifespan of 200,000 times. The important reason is that the overseas coiling machine steel adopts the single indicators of quality pollution, annealing organization and toughness of the storm. The quality of the steel is well-balanced, the structure is small, and the size is accurate. For example, the overseas H13 steel specification has up to 8 indicators, while the Chinese specification has only 3. The actual production confirmed that China's steel coil rolling machine, which has been growing in scale, still has not escaped the vicious circle of "big but not strong".

Although my country also has a series of coiling machine data, but there are many repeated steel types, the summary is thick, the batch size is small, the quality of the steel is poor, and the reliability of the steel is not there, and the coiling machine companies have concerns about the selection. There is a certain gap between the types, specifications, quality and performance of China's coiling machine steel and the production level of domestic advanced coiling machine steel. As a result, China's medium and low-grade coiling machine steel must be imported from overseas every year. , From that point of view, restricts the stagnation of the rolling machine enterprises. Luo Baihui believes that my country should increase the research on basic practice and utilization in a small name, and adopt advanced facilities and skills to solve the wide use of bending machines in the name of multi-variety and high-quality. With the diversification of the types of rolling machines, the working conditions of the rolling machines are simplified, and the proper selection of grains is even more insignificant and urgent. Therefore, there is an urgent need to construct a system for selecting and extracting food for the rolling machine.