Method for rolling mill to roll round steel with diameter phi of 120mm and round steel with diameter phi of 130mm by one roller set
A rolling mill and round bar technology, applied in the field of rolling Φ120mm and Φ130mm round bars with a rolling mill sharing a set of rolls, can solve the problems of reducing production efficiency, large capital and space, occupation, etc., to reduce labor intensity and improve production efficiency , The effect of reducing the roll change time
Active Publication Date: 2012-07-11
SHANXI TAIGANG STAINLESS STEEL CO LTD
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Problems solved by technology
A set of rolls is required to roll one specification. If there are many specifications of the product, a large number of rolls and spare parts reserves are required, which takes up a lot of funds and space. labor intensity, reduce production efficiency
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[0009] The rolling conditions of this embodiment are: use a 220mm×220mm square billet, use a 650mm three-roll rolling mill, there is a turning plate in front of the machine, and the steel is fed from the lower rolling line; feed steel.
[0010] Since there are more passes to be arranged on a set of rolls, the first 6 passes must use conjugate passes.
[0011] The rolling passes of Φ120mm and Φ130mm round steel are 9 passes and 7 passes respectively. During rolling, the 1st to 5th holes and the 8th hole are shared ( figure 1 shown).
[0012] After the 10 pass sizes shown in Table 1 are arranged on the roll, it is processed and turned, and the corresponding import and export guide devices are made, the turning plate is made and other production preparations are made.
[0013] Table 1 hole size
[0014] .
[0015] When rolling Φ120mm round steel, the passes of the 1st to 8th holes and the finished pass of Φ120mm are used, a total of 9 rolling passes. The roll gap of the...
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Abstract
A method for a rolling mill to roll round steel with the diameter phi of 120mm and round steel with the diameter phi of 130mm by one roller set includes the ten-pass design of a 650mm rolling mill and a regulating method thereof. The two types of round steel share the first, second, third, fourth and fifth passes and the eighth pass of leader passes. When in rolling of the round steel with the diameter phi of 120mm, the roller gap of the upper rolling line is 6mm, feeding is carried out after 90-degree rotation from the seventh pass to the eighth pass. When in rolling of the round steel with the diameter phi of 130mm, the roller gap of the upper rolling line is regulated to be 11mm, feeding is carried out from the fifth pass to the eighth pass after the sixth pass and the seventh pass arecast off, the third pass and the fifth pass meet the requirement for the entry width of the previous pass in the processes of rolling the round steel with the diameter phi of 120mm and the round steel with the diameter phi of 130mm simultaneously, the eighth pass meets requirements of the round steel with the diameter phi of 120mm and the round steel with the diameter phi of 130mm simultaneously,the width B of the eighth pass meets requirements of the round steel with the diameter phi of 130mm, and the height H thereof meets requirements of the round steel with the diameter phi of 120mm. By the method, the rolling mill can roll the round steel in two specifications by the same roller set, and roller changing frequency and time due to alternating of the two specifications can be reduced.
Description
technical field [0001] This patent belongs to the field of rolling production of round steel bars. On a 650mm three-roll rolling mill, a method for rolling round steel with two specifications of Φ120mm and Φ130mm is realized by sharing a set of rolls and passes. Background technique [0002] Generally, at least two or more rolling mills are required to roll round steel bars with a diameter of Φ100 mm or more on a medium-sized steel rolling mill, and one rolling mill is used for the finished hole and the finished front hole. A set of rolls is required to roll one specification. If there are many specifications of the product, a large number of rolls and spare parts reserves are required, which takes up a lot of funds and space. Labor intensity reduces production efficiency. Contents of the invention [0003] The invention provides a method for rolling two round steel specifications of Φ120mm and Φ130mm by using a rolling mill and a set of rolls. In this way, the number of...
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IPC IPC(8): B21B1/16
Inventor 姚文峰李颖叶文学黄昌义石奇良
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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