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Since the 1980s, China's carbon steel seamless pipe production technology and equipment level has be

更新日期:2013-07-18  浏览:1524

 Anshan Iron and carbon steel seamless pipe plant, carbon steel seamless pipe plant in Chengdu and Shanghai Municipality carbon steel seamless pipe plant has been responsible for all supply

State industries desired carbon steel seamless pipe main task, national civil and military production and construction required for carbon steel seamless pipe
Varieties, the main city in both plant a range of product specifications, they undertake and complete the delivery mission, strong support for the then defense and economic construction.
During this period, countries in order to meet the construction of oil and gas pipeline needs, but also worked in Jinzhou
carbon steel seamless pipe plant, Ziyang carbon steel seamless pipe mills and Shengli Oilfield carbon steel seamless pipe plant and other construction and commissioning of large diameter spiral welded pipe
Unit.
Flying .5.3 1980s and development of improved
Since the 1980s, China's carbon steel seamless pipe production technology and equipment level has been quickly put
High. Since Baosteel carbon steel seamless pipe plant ∮ 140 full-floating garbage garbage mandrel Pipe Mill's introduction begins, has
Introduction of Tianjin carbon steel seamless pipe company ∮ 250 garbage garbage mandrel Limit type Pipe Mill, Daye Steel ∮ 177 garbage garbage three
Roll (Asser) pipe mill, Chengdu carbon steel seamless pipe plant ∮ 180 garbage garbage precision pipe mill and Hengyang carbon steel seamless pipe
Factory ∮ 89 garbage garbage mandrel-type semi-Limit Pipe Mill. Running for nearly 30 years clad carbon steel seamless pipe plant
∮ 400 garbage garbage carbon steel seamless pipe group also conducted a world-class technological innovation, but also the introduction of CCS
∮ 180 less garbage garbage rack (5) Limit type mandrel Pipe Mill. These sets of pipe mill in operation,
So that China rolled carbon steel seamless pipe equipment level to the international level.
In efforts to introduce dozens of sets of pipe with contemporary equipment level of equipment, including its product range
Small diameter ERW straight seam pipe, stainless carbon steel seamless pipe, sprinkler pipe thin, conical tubes, Bundy tube, stainless composite
Pipe, straight seam submerged arc welded pipe Dazhi, UOE OCTG and large diameter stainless steel pipe and so on. As 1985
In Baoji carbon steel seamless pipe mill line introduced in Germany ∮ 426 garbage garbage ERW units; 1986 TISCO stainless carbon steel seamless pipe plant
Imported from Sweden, three sets of second-hand continuous molding straight seam welded pipe mill and a set of stainless steel used ∮ 820 garbage garbage
UOE forming stainless steel welded pipe; 1989 Ling Steel Group Jinxi carbon steel seamless pipe plant imported from Germany
∮ 508 garbage garbage ERW unit; Shanghai in light petroleum carbon steel seamless pipe Company and Guangxi Beihai, Benxi North Source, Liaoning
MSC, Guangzhou Panyu successively from Taiwan (plowing security company) purchased five sets of S-323 garbage garbage welded pipe; XU
State halo carbon steel seamless pipe company introduced from Japan ∮ 219 garbage garbage ERW unit; Yoshihara carbon steel seamless pipe from Italy
Introduction of ∮ 219 garbage garbage ERW; Ning carbon steel seamless pipe plant imported from Germany ∮ 114 garbage garbage ERW unit; Shen
Shenyang, Guangzhou and North Source carbon steel seamless pipe factory (company) imported from Japan ∮ 114 garbage garbage ERW; Shandong Qilu Ying
G to Group Corporation carbon steel seamless pipe plant from Germany to introduce a P3-160-11RS-TIG TIG welded pipe;
Stainless steel pipe factory in Guangzhou, Shunde Huafeng imported from Germany ∮ 426 garbage garbage welded stainless steel straight seam welding machine
Group; 1994 Guangzhou Zhongshan carbon steel seamless pipe Industry Corporation introduced from Australia's SRU1600 spiral
Welder; 1998 Guangzhou Panyu Zhujiang carbon steel seamless pipe Co. introduced from Australia's HU-METAL
Large diameter welded pipe production line (∮ 406.4 ~ 1626 garbage garbage) and so on. In order to meet China's construction of large diameter
Transportation of oil and gas pipelines need Guangzhou Panyu Zhujiang carbon steel seamless pipe Limited and Limited Liaoyang carbon steel seamless pipe first
After the completion of a large diameter UOE welded pipe mill, County Hebei dragon carbon steel seamless pipe Co., the COE Dazhi
Diameter welded pipe mill is also under construction. 1.6 carbon steel seamless pipe research tasks
With carbon steel seamless pipe production technology rapid development, carbon steel seamless pipe equipment and process requirements
Will continue to increase, the focus on carbon steel seamless pipe quality requirements. Can be said that the accuracy of carbon steel seamless pipe
And internal quality mark carbon steel seamless pipe market competitiveness of manufacturing enterprises. In recent years, China's carbon steel seamless pipe raw
Production capacity and quality control has made considerable progress, new technology, new equipment continue to emerge. China has
Become carbon steel seamless pipe by the producer. Although there have been a lot of carbon steel seamless pipe (including production equipment) out
Mouth, but in the special-purpose carbon steel seamless pipe, such as nuclear power, aerospace, defense equipment, petroleum and other aspects of pipe needed
Imports. Therefore, carbon steel seamless pipe production technology, the main tasks are:
① systematic study of carbon steel seamless pipe deformation theory of plasticity, especially at different rolling temperature, speed, pressure
Forces and thermal coupling problem;
② The complex carbon steel seamless pipe rolling process optimization of various physical quantities, product quality can be
Control;
③ enhance carbon steel seamless pipe production equipment, the level of independent research and development, from product source to solve quality problems;
④ improve carbon steel seamless pipe production automation control level to effectively address quality control issues;
⑤ strengthen the theoretical level of business and technical personnel, and constantly improve the technological transformation of production capacity. The earliest use of the general carbon steel, low alloy steel and some structural steel round carbon steel seamless pipe, with open hearth
Steelmaking, blooming blooming, and then rolling mill made; using alloy steel, high alloy steel (eg
Stainless steel) and special high-quality carbon steel and low alloy steel round carbon steel seamless pipe, electric furnace steelmaking is generally used by steam
Hammer or hydraulic press blooming, and then by steam hammer forged, small-diameter round carbon steel seamless pipe is through blooming blooming, and then by
Rolling mill made.
Its production process-
Open Hearth Ingot → → → blooming blooming rolling round carbon steel seamless pipe → inspection, grinding
EAF → ingot → hammers or hydraulic forging hammers blooming → round carbon steel seamless pipe → inspection, grinding
   
(Small diameter carbon steel seamless pipe I
)
Blooming Blooming → rolling round carbon steel seamless pipe → check, → - grinding
Pipe jacking machine using rolling or forging square carbon steel seamless pipe, its production process is basically the same as the round carbon steel seamless pipe production
Process, only in the rolling step, the use of square hole series. In 1977 the first set of two machine-made
Four stream curved square carbon steel seamless pipe continuous casting machine (specification: 140 × 140 garbage garbage garbage garbage, 160 × 160 garbage garbage garbage garbage,
185 × 185 garbage garbage garbage garbage) was built. Its production process-
Open-hearth furnace → dusting, feeding wire refining → casting square carbon steel seamless pipe → inspection, grinding
Pilger machine production use square waves ingots. General quality carbon steel and alloy steel by the open-hearth
Steelmaking, directly cast into ingots. But for high-alloy steel (such as stainless steel, etc.) and have special requirements (such as high
Pressure boiler tube, the original standards, you must use the forged carbon steel seamless pipe production) of high-quality carbon steel, low alloy steel
And alloy structural steel is used electric furnace steelmaking. Begins by hammers or hydraulic forging forged into octagonal,
Then machined into octagonal carbon steel seamless pipe. Later, in order to solve this forged carbon steel seamless pipe supply difficulties, to read remelting ingots octagonal garrison, and difficult to use high-alloy steel perforated into a hollow walled ESR
Gross carbon steel seamless pipe (after completion of the intermediate frequency induction furnace and centrifugal casting machine, used in steelmaking and centrifugal casting thick
Cast carbon steel seamless pipe), machined into a thick-walled capillary tube, and then heated to extend or direct (no longer been perforated
Process) in the periodic rolling machine rolling. Its production process-
In recent years, the construction of punch and various forms of pipe mill, basically using round carbon steel seamless pipe rolling. Round
carbon steel seamless pipe production process, in a continuous casting round carbon steel seamless pipe outside before addition to the steelmaking process, basically a long warranty
Holding the round carbon steel seamless pipe rolling or forging production processes. And because the converter steelmaking development, gradually from a single
Open hearth open hearth and converter to the development and the development of BOF converter plus furnace refining process. If a steel
Corporation in the 1980s introduced carbon steel seamless pipe production line, the process is
Desulphurization blowing oxygen converter steelmaking → → → argon stirred ladle dusting → vacuum degassing →
Ingot → rolling round carbon steel seamless pipe → inspection, grinding
                   --- I --- two months I flaw
In the rolling process, the first billet and rolled into big online hot flame surrounded by clean and cut the head and tail and then rolled
Into a round carbon steel seamless pipe.
 
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