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Method of making clad metal pipe

A technology for cladding steel pipes and cladding materials, used in metal processing, manufacturing tools, metal processing equipment, etc., can solve problems such as difficulty in executing extrusion procedures

Active Publication Date: 2019-06-07
HUNTINGTON ALLOYS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Implementing such a narrow window makes the actual extrusion procedure difficult to perform

Method used

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  • Method of making clad metal pipe
  • Method of making clad metal pipe
  • Method of making clad metal pipe

Examples

Experimental program
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Effect test

Embodiment

[0067] The initial billet for extrusion was prepared using X65 grade steel pipe (composition is given in Table 2 below), the initial billet was drilled, and machined into a hollow cylinder having a 276.4 mm (10.88 in) outer diameter x 68.6 mm (2.70 in.) wall x 1003.3 mm (39.5 in.) long, and a corrosion-resistant nickel alloy liner (composition is given in Table 2 below) having an outer diameter of 138.9 mm (5.47 in.) x 28.2 mm (1.11 in.) inches) wall x 1003.3 mm (39.5 inches) long. Nickel alloys are made using VIM / ESR ingots. The extruded billet was heated to 1232°C (2250°F) and extruded into a 10 m (32.8 ft) tube with an outer steel shell of 203.2 mm (8.0 in) and an inner diameter of 169.1 mm at the interface (6.66 inches), the outer diameter of the internal corrosion resistant liner at the interface was 169.1 mm (6.66 inches) and the inner liner diameter was 165.1 mm (6.5 inches). Therefore, the thickness of the steel shell is 17.1 mm (0.67 in) and the thickness of the cor...

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Abstract

A method of producing a nickel alloy clad steel pipe including: providing a hollow cylinder of nickel alloy cladding material and a hollow cylinder of steel, placing the hollow cylinder of the nickel alloy cladding material concentrically inside the hollow cylinder of steel or the hollow cylinder of the steel concentrically inside the hollow cylinder of nickel alloy cladding material to form a composite billet, heating the composite billet to 1121-1260° C., and extruding the composite billet, wherein the nickel alloy cladding material comprises 6.0-12.0 wt. % molybdenum, 19.0-27.0 wt. % chromium, 1.0 wt. % maximum tungsten, 0.6 wt. % maximum aluminum, 0.6 wt. % maximum titanium, 0.001-0.05 wt. % carbon, 0.001-0.035 wt. % nitrogen, 0.001-0.3 wt. % silicon, 1.0 wt. % maximum niobium, 2.5 wt. % maximum iron, 0.5 wt. % maximum manganese, 0.015 wt. % maximum phosphorous, 0.015 wt. % maximum sulfur, 1.0 wt. % maximum cobalt, and the balance nickel and may have a solidus temperature greater than 1312° C.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to US Provisional Application US62 / 040,056, filed August 21, 2014, and US Utility Model Application US14 / 829,039, filed August 18, 2015, the disclosures of which are incorporated herein by reference in their entirety. technical field [0003] FIELD OF THE INVENTION The present invention relates to a method of manufacturing a clad metal pipe by hot extrusion, in particular, to a method of manufacturing a clad metal pipe having a nickel alloy cladding layer and carbon steel, low alloy steel or Chromium molybdenum steel base. Background technique [0004] Clad materials have been used in a wide variety of applications. A cladding material is a combination of two different types of metals or alloys that adhere to each other so that the desired properties of each metal can be exploited. [0005] The most mass-produced cladding material is clad steel, where one metal (called the "parent meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/08C22C19/05C22F1/10
CPCB23K20/001B23K20/227B23K2101/06B23K2101/10B23K2103/04B23K2103/18B23K2103/26B32B15/015C21D1/60C21D6/004C21D6/005C21D6/007C21D6/008C21D9/08C21D9/085C22C19/055C22C19/056C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/52C22F1/10
Inventor 比哈文·查克拉瓦蒂布莱恩·A·贝克德贝永蒂·梅特尔
Owner HUNTINGTON ALLOYS INC