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A production process, oil pipe technology, applied in the direction of metal rolling, etc., can solve the problems of large project investment, uncompact process, large floor area, etc., achieve low project investment, reduce production energy consumption, and small floor area Effect
Inactive Publication Date: 2011-06-29
鞍钢集团工程技术有限公司
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[0005] The purpose of the present invention is to provide a new oil pipe production process, which solves the problems of high production cost and high energy consumption in some previous production processes, although the product quality is good; The problem of compactness and large footprint;
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Embodiment 1
[0020] Such as figure 1 As shown, a petroleum pipe production process, the main process includes pipe blank preparation, ring furnace heating, piercing machine piercing, continuous rolling mill continuous rolling, waste pipe secondary heating, reducing and sizing, steel pipe cooling, sawing, straightening , flaw detection, and finishing, characterized in that: the perforation process uses a bacteria-type piercer, the continuous rolling process uses a PQF three-roller continuous rolling mill, the second heating process of the waste tube uses an intermediate frequency induction furnace, and the sizing process uses a micro Tension sizing machine. This process is not only suitable for the production of thin-walled pipes, but also for the production of medium-thick-walled pipes.
[0021] Such as image 3 As shown, in order to reduce the temperature drop of the tube blank, the tube blank is directly transported from the exit 1 of the ring furnace to the front desk 3 of the piercin...
Embodiment 2
[0023] Such as figure 2 As shown, for the production of medium and thick-walled oil pipes, the present invention can also produce oil pipes by eliminating the secondary heating of waste pipes. The main steps of the process include pipe blank preparation, ring furnace heating, piercing by piercing machine, and continuous rolling of pipes. Machine continuous rolling, reducing and sizing, steel pipe cooling, sawing, straightening, flaw detection, finishing, the described piercing process adopts fungal piercing machine, continuous rolling process adopts PQF three-roller continuous rolling mill, reducing and sizing process adopts Micro tension sizing machine.
[0024] Such as image 3 As shown, in order to reduce the temperature drop of the tube blank, in the process of producing medium and thick-walled oil pipes, the tube blank can also be directly transported from the ring furnace outlet 1 to the front desk 3 of the piercing machine through the arc-shaped roller table 2, and th...
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Abstract
The invention discloses a production process of a petroleum pipe, and the production process mainly comprises the following steps: preparing a tube blank; heating by virtue of an annular furnace; punching by virtue of a punching machine; continuously rolling by virtue of a continuous roller; carrying out secondary heating on a pierced billet; reducing the sizing; cooling a steel tube; carrying out saw cutting; straightening; performing crack detection; and precisely adjusting. The production process of the petroleum pipe is characterized in that a fungoid type punching machine is adopted in the punching process; PQF (premium quality finishing) is adopted in the continuous rolling process; a middle-frequency inducing furnace is adopted in the secondary heating process of the pierced billet; and a micro tension force sizing machine is adopted in the sizing reduction process. In the invention, based on fungoid type punching and PQF, excellent petroleum pipes also can be produced as well with relatively low production cost by using a 'middle-frequency inducing heating furnace + micro tension force sizing machine' production manner which has the advantages of low investment, small occupied area and relatively lower energy consumption instead of the 'steel tube reheating furnace + tension force sizing reducing machine' production manner which has the defects of high investment, large occupied area and relatively higher energy consumption.
Description
technical field [0001] The invention belongs to the technical field of metallurgy, relates to a production process of oil pipes, and is also applicable to the production of conventional seamless steel pipes. Background technique [0002] The oil pipe production process is complicated, there are various types of equipment, high product quality requirements, heavy uses and responsibilities, high product prices, and large production energy consumption. It is more urgent and important to develop a high-quality and economical oil pipe production process to adapt to today's increasingly fierce competition in oil pipe products, the country's promotion of energy conservation and emission reduction, and the world's entry into a low-carbon economy. [0003] At present, many production lines at home and abroad adopt the method of "bacterial piercing + PQF three-roll continuous rolling" to produce oil pipes. The waste pipes for continuous rolling export are usually heated in a "steel pi...
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