Method for Manufacturing helix composite steel tube

A technology for composite steel pipes and manufacturing methods, applied in the direction of manufacturing tools, tubular objects, auxiliary devices, etc., can solve the problems of high manufacturing costs, cost reduction, and complex equipment, and achieve good technology promotion value, broad market prospects, and low manufacturing costs Effect

Inactive Publication Date: 2007-12-12
吉欣(英德)热轧不锈复合钢有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, it is more reasonable to use stainless steel pipes to manufacture pressure vessels and pipes that require corrosion resistance, but the cost is high; The thickness of the stainless steel pipe is only 2 to 10% of the overall thickness, which not only meets the corrosion resistance and high enough strength of the container, but also greatly reduces the cost
Traditional metal composite panels are

Method used

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  • Method for Manufacturing helix composite steel tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A composite strip coil with a stainless steel thickness of 0.5mm and a carbon steel thickness of 7.5mm is used as a composite metal strip coil to produce a 219mm spiral composite steel pipe.

[0026] Method: Produce directly in the traditional spiral pipe making unit. After the composite steel plate is uncoiled, leveled, milled, formed, internal and external welding, testing, cut to length, and flat-end chamfered, the composite steel plate can be manufactured to 219mm Spiral composite steel pipe, in which stainless steel electrodes are used for internal welding, and ordinary carbon steel electrodes are used for external welding.

Embodiment 2

[0028] A composite strip coil with a stainless steel thickness of 2.5mm and a carbon steel thickness of 8.5mm is used as a composite metal strip coil to produce a 820mm spiral composite steel pipe.

[0029] Method: Produce directly in the traditional spiral pipe making unit. After the composite steel plate is uncoiled, leveled, milled, formed, welded inside and outside, tested, cut to length, and flat-end chamfered, the composite steel plate can be manufactured to 820mm Spiral composite steel pipe, in which stainless steel electrodes are used for internal welding, and ordinary carbon steel electrodes are used for external welding.

Embodiment 3

[0031] A composite strip with a stainless steel thickness of 3.5mm and a carbon steel thickness of 11.5mm is used as a composite metal strip to produce a 1820mm spiral composite steel pipe.

[0032] Method: Produce directly in the traditional spiral pipe making unit. After the composite steel plate is uncoiled, leveled, milled, formed, welded inside and outside, inspected, cut to length, and flat-end chamfered, 1820mm can be manufactured. Spiral composite steel pipe, in which stainless steel electrodes are used for internal welding, and ordinary carbon steel electrodes are used for external welding.

[0033] By adopting the method of the invention, various spiral composite steel pipes with nominal diameters of 219mm~1820mm can be manufactured to meet different needs of the market.

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Abstract

The spiral complex steel tube is made by processing on common spiral tubes through the procedures of selecting roll plates based on the tube caliber, dismantling the roll, rectifying and smoothening, milling, forming, in and out welding, inspection, fixed dimensional cutting, flatted edging, putting to the warehouse, with the roll plates being of stainless carbon steel complex ones, welding using stainless steel weld bar.

Description

technical field [0001] The invention relates to a metal composite pipe manufacturing technology, in particular to a method for manufacturing a spiral composite steel pipe. Background technique [0002] The application of metal composite pipes is mainly based on the purpose of economy and resource conservation. Under the premise of meeting the same use effect, it can reduce the amount of precious or rare materials used, as well as special uses on various equipment. For example, it is more reasonable to use stainless steel pipes to manufacture pressure vessels and pipes that require corrosion resistance, but the cost is high; The thickness of the stainless steel pipe is only 2-10% of the overall thickness, which not only meets the corrosion resistance and high enough strength of the container, but also greatly reduces the cost. Traditional metal composite panels are mainly processed and manufactured by mechanical composite methods, which have the disadvantages of low efficacy...

Claims

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Application Information

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IPC IPC(8): B21C37/14B21C37/12B21C37/08B23K35/30B23K37/00
CPCB23K2203/04B21C37/122B23K2201/06B23K9/0325B23K2101/06B23K2103/05
Inventor 严孟杰
Owner 吉欣(英德)热轧不锈复合钢有限公司
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