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Steel and iron smelting machinery
Mechanical equipment that uses high-temperature metallurgical methods (also known as pyrometallurgy) to smelt ore or low-purity metals into certain purity metals, or to combine several metals and non-metals to smelt alloys of certain composition. Steel and iron are generally smelted using high-temperature metallurgical methods. Steel smelting machinery includes blast furnaces and their supporting machinery for ironmaking, open hearth and converter furnaces for steelmaking, electric arc furnaces, external refining equipment, ingot casting equipment, and metallurgical vehicles. The blast furnace and its supporting machinery are called blast furnaces, which continuously refine iron ore or artificial rich ore into pig iron. Its appearance resembles a rigid cylinder, composed of refractory materials and metal shells. Figure 1 shows the layout of the blast furnace and its supporting machinery. The raw materials are weighed from the ore storage tank and transported to the top of the furnace by the blast furnace mechanical hopper or belt conveyor, and evenly placed in batches into the furnace. The air preheated by the hot blast furnace is blown into the furnace through the tuyere, causing the fuel to burn and heat the furnace material, decompose and reduce it, thereby obtaining pig iron. The molten iron is discharged from the tapping hole, enters the molten iron tank through the iron ditch and flow nozzle, and is transported to the steel plant or cast into iron blocks by a cast iron machine. The gas exported from the furnace top can be used as fuel after being treated by the gas purification system. To strengthen smelting, in addition to using external combustion hot air furnaces to increase air temperature, increase air volume, or using comprehensive blowing (including fuel injection, oxygen rich blowing, and dehumidification blowing), increasing furnace top pressure can also increase production and reduce coke consumption. The newly built blast furnaces widely use bell valve sealed or bell free high-pressure furnace tops. After adopting the bell free high-pressure furnace top, the height and weight of the furnace top can be correspondingly reduced by about half. The blast furnace has a capacity of about 5500m3 (with a daily output of over 10000 tons of pig iron). The large-scale and continuous production of blast furnaces requires a high degree of mechanization and automation, and it is necessary to use supporting blast furnace machinery such as opening and closing tapping machines and tuyere changing machines.
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Characteristics of stainless steel rollers
Stainless steel coils are usually refined and produced using a cNC system, with durable, wear-resistant, polished mirrors, hardness of HLC60-66 degrees after treatment, and shape tolerance roundness within 0.05mm. At this point, candidate molds are also important for molds. Generally, inferior molds cannot be selected to avoid pulling, wrinkles, nail marks, mechanical lines, sensations, uneven surfaces formed by rectangular tubes, non sharp angles, concave corners, and other phenomena during the production process. The material of the stainless steel roller itself is generally made of high-quality 304 stainless steel or 316 stainless steel, which has good corrosion resistance and wear resistance, long service life, and smooth surface. It is very suitable for industries such as printing and dyeing, papermaking, H-shaped steel, metallurgy, etc.
What are the common faults of sintering machines
Due to the long-term transmission of large torque during operation, the expansion sleeve of the sintering machine is prone to fatigue deformation of the metal, resulting in fatigue wear between the expansion sleeve and the fastener. At the same time, due to the large size of the sintering machine, it is difficult to repair. In response to such problems, polymer materials can be applied for on-site repair, and there are now many applications of polymer composite materials. Its characteristic is that there is no need to dismantle the equipment, as long as the working surface is exposed, and the repair is fast, saving valuable production time for the enterprise. The traditional outsourcing brush plating and spraying methods for repairing dimensions are difficult to ensure, and the repair cost is relatively high. The polymer composite material method is more practical, and there is generally a component corresponding repair and mold repair process for the matching relationship of parts, equipment operation status, and wear. The repair mainly consists of the following steps: first, surface treatment should be carried out on the worn parts of the journal and the inner hole of the gear to ensure cleanliness, dryness, roughness, and exposure of the original metal color. The surface of the shaft diameter should be coated with polymer metal repair material, scraped flat with a ruler, and cured; Surface treatment of gear inner holes and application of polymer metal repair materials to smooth out wear marks and solidify; After the material is heated and solidified, the surface of the material is polished flat. The inner ring of the expansion sleeve is used as a mold to fit the size of the repaired surface of the shaft diameter, and the foot edge is polished. Then, the repaired size is measured; Afterwards, apply polymer metal repair materials to the inner and outer rings of the expansion sleeve for general assembly.
Warmly celebrate the launch of the official website of Jiangyin Chengku Machinery Manufacturing Co., Ltd!
28
2022
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Tel
+86-510-86238727
+86-15961653958
E-mail
fjy3958@163.com
Factory address
No. 15 Huahong Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China
121 Huanxi Road, Huaxi Village, Huashi Town, Jiangyin City, Jiangsu Province, China
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