Free cutting steel production device and operation method thereof
A technology for cutting chips and heating devices, which is applied to workpiece surface treatment equipment, metal rolling, manufacturing tools, etc., can solve the problems of serious oxidation and burning loss of continuous casting slabs, reduced yield, and increased gas consumption.
Pending Publication Date: 2020-09-22
ZENITH STEEL GROUP CORP +1
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Problems solved by technology
However, the heat-resistant temperature limit of the heating furnace design is usually 1250°C. When producing sulfur-containing free-cutting steel, if the furnace gas temperature is kept above 1250°C for a long time, the life of the heating furnace will be greatly shortened, and due to the long-term high temperature Heating, the gas consumption increases significantly, the continuous casting slab is seriously oxidized and burned, and the yield decreases. Secondly, the increase of oxide scale shortens the maintenance cycle of the heating furnace and increases the maintenance cost of the heating furnace
Method used
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[0025] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0026] Such as Figure 1-4 As shown, the present invention is a device for producing easy-to-cut steel, including a heating furnace 1, a descaling machine 2, a heating device 3, and a rolling line 4 arranged in sequence along the moving direction of the slab; the heating device 3 includes a slab for casting 5 A square casing 6 that passes through; the inner wall of the casing 6 is provided with a first burner 7 that is heated vertically to the side wall of the slab 5 ; it is fixed obliquely on the inner wall of the casing 6 and heated obliquely to the end surface of the slab 5 The second burner 8;
[0027] In this scheme, compared with traditional heating fu...
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The invention relates to a free cutting steel production device. The production device comprises a heating furnace, a descaling machine, a heating device and a rolling line which are sequentially arranged in the moving direction of a casting blank, wherein the heating device comprises a square shell allowing the casting blank to pass through, and the inner wall of the shell is provided with firstburners for vertically heating the side wall of the casting blank and second burners obliquely fixed on the inner wall of the shell and obliquely heating the end surface of the casting blank. According to the production device, the heating device is additionally arranged on a sulfur-containing free cutting steel production line, and the heating device heats a head and the side wall of the castingblank to enable the temperature of the casting blank to reach 1200-1250 DEG C, high-temperature initial rolling of the head of the casting blank is guaranteed, and it is guaranteed that the head of arolled piece can smoothly bite rolling mills of all passes.
Description
technical field [0001] The invention relates to a device for producing easy-cutting steel. Background technique [0002] Free-cutting steel is widely demanded in the market for its excellent cutting performance. With the development of high-speed, precision and automation of machining, especially the development of the automobile industry, precision instrument industry and household appliances, at the same time, considering that the cost of machining is an important part of the manufacturing cost of parts in the manufacturing industry (sometimes even reaching the cost of parts 40% to 60% of the manufacturing cost), people hope to reduce the processing cost by improving the machinability of steel. Many factors have contributed to the increase in the output and variety of free-cutting steel, and the quality has continued to improve. [0003] The high sulfur content (0.080-0.35%) in sulfur-containing free-cutting steel makes the thermal processing performance of the steel wor...
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IPC IPC(8): B21B45/04B21B37/74B21B15/00
CPCB21B15/00B21B37/74B21B45/04
Inventor 来永彪许加陆李翔苏振伟徐乐钱沈艳屈志东
Owner ZENITH STEEL GROUP CORP