Novel bimetallic wear-resistant pipe and manufacturing method thereof

A wear-resistant tube and bimetal technology, which is applied in the field of metal casting, can solve the problems of poor toughness and poor impact resistance of bimetal wear-resistant tubes, and achieve the effects of enhancing corrosion resistance, prolonging service life and enhancing mechanical properties.

Inactive Publication Date: 2022-02-25
江苏鑫都管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a novel bimetal wear-resistant pipe and its manufacturing method, which solves the problem that generally only the outer pipe is made of stainless steel, and the outer pipe is usually made of high-chromium cast iron, resulting in Bimetal wear-resistant pipe has poor toughness and poor impact resistance

Method used

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  • Novel bimetallic wear-resistant pipe and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a novel bimetallic wear-resistant pipe proposed by an embodiment of the present invention includes a liner pipe, an outer layer pipe and a strengthening coating, and the liner pipe includes the following raw materials in mass fractions: carbon 0.03%, nitrogen 0.2%, Manganese 1.8%, Chromium 19%, Nickel 12%, Silicon 0.3%, Aluminum 1.6%, Tantalum 1.5%, Niobium 0.9%, Hafnium 2.2%, Cobalt 0.25%, Tungsten 2%, Molybdenum 2%, Tellurium 0.5%, Ductile Iron 4%, gray cast iron 4%, epoxy plastic 4%, phenolic plastic 5%;

[0029] The outer tube includes the following raw materials in mass fractions: carbon 0.025%, nitrogen 0.4%, manganese 2%, chromium 21%, nickel 14%, silicon 0.5%, aluminum 2%, tantalum 2.4%, niobium 1.5%, hafnium 3.3%, 0.4% cobalt, 4% tungsten, 4% molybdenum, 0.8% tellurium, 6% ductile iron, 6% gray cast iron, 6% epoxy plastic, 7% phenolic plastic;

[0030] The reinforcing coating comprises the following components in parts by weight: 4 ...

Embodiment 2

[0039] Such as figure 1 As shown, a novel bimetallic wear-resistant pipe proposed by an embodiment of the present invention includes a liner pipe, an outer layer pipe and a reinforcing coating, and the liner pipe includes the following raw materials in mass fractions: 0.05% carbon, 0.25% nitrogen, Manganese 1.85%, Chromium 20%, Nickel 10%, Silicon 0.2%, Aluminum 1.4%, Tantalum 0.8%, Niobium 0.5%, Hafnium 1.5%, Cobalt 0.1%, Tungsten 0.1%, Molybdenum 1%, Tellurium 0.3%, Ductile Iron 3%, gray cast iron 3%, epoxy plastic 3%, phenolic plastic 4%;

[0040] The outer tube includes the following raw materials by mass fraction: carbon 0.02%, nitrogen 0.3%, manganese 1.9%, chromium 20%, nickel 13%, silicon 0.4%, aluminum 1.8%, tantalum 2.3%, niobium 1.4%, hafnium 3.2%, Cobalt 0.3%, Tungsten 3%, Molybdenum 3%, Tellurium 0.6%, Ductile Iron 5%, Gray Iron 5%, Epoxy Plastic 5%, Bakelite 6%;

[0041] The reinforcing coating comprises the following components in parts by weight: 3 parts of p...

Embodiment 3

[0050] Such as figure 1As shown, a novel bimetallic wear-resistant pipe proposed by an embodiment of the present invention includes a liner pipe, an outer layer pipe and a strengthening coating, and the liner pipe includes the following raw materials in mass fractions: carbon 0.02%, nitrogen 0.3%, Manganese 1.9%, Chromium 20%, Nickel 13%, Silicon 0.4%, Aluminum 1.8%, Tantalum 2.3%, Niobium 1.4%, Hafnium 3.2%, Cobalt 0.3%, Tungsten 3%, Molybdenum 3%, Tellurium 0.6%, Ductile Iron 5%, gray cast iron 5%, epoxy plastic 5%, phenolic plastic 6%;

[0051] The outer tube includes the following raw materials by mass fraction: carbon 0.025%, nitrogen 0.5%, manganese 2.1%, chromium 22%, nickel 15%, silicon 0.6%, aluminum 2.2%, tantalum 2.5%, niobium 1.6%, hafnium 3.4%, Cobalt 0.6%, Tungsten 5%, Molybdenum 5%, Tellurium 0.9%, Ductile Iron 7%, Gray Iron 7%, Epoxy Plastic 7%, Bakelite 9%;

[0052] The reinforcing coating comprises the following components in parts by weight: 7 parts of pol...

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Abstract

The invention belongs to the technical field of metal casting, and particularly relates to a novel bimetallic wear-resistant pipe which comprises a lining pipe, an outer-layer pipe and a reinforcing coating. The lining pipe comprises the following raw materials in percentage by mass: less than or equal to 0.02% of carbon, 0.1-0.3% of nitrogen, 1.7-1.9% of manganese, 18-20% of chromium, 10-13% of nickel, 0.2-0.4% of silicon, 1.4-1.8% of aluminum, 0.8-2.3% of tantalum, 0.5-1.4% of niobium, 1.5-3.2% of hafnium, 0.1-0.3% of cobalt, 1-3% of tungsten, 1-3% of molybdenum, 0.3-0.6% of tellurium, 3-5% of nodular cast iron, 3-5% of gray cast iron, 3-5% of epoxy plastic, and 4-6% of phenolic plastic. The lining pipe and the outer-layer pipe are both made of stainless steel materials, so that the corrosion resistance, the formability, the compatibility and the obdurability in a wide temperature range of the bimetallic wear-resistant pipe are enhanced; and cast materials such as nodular cast iron, gray cast iron, epoxy plastic and phenolic plastic are added on the original basis, so that tensile strength of the bimetallic wear-resistant pipe is enhanced.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a novel bimetal wear-resistant pipe and a manufacturing method thereof. Background technique [0002] Bimetallic composite pipes have high carbon content, impact resistance, low thermal expansion rate, pressure resistance, high temperature resistance, mature installation, and complete specifications; bimetallic composite pipes produced by many manufacturers have been widely used in oil fields, chemicals, electric power and other industrial fields , its scope of application is becoming wider and wider, and the economic, environmental and social benefits it brings are more obvious. Bimetallic composite pipes are generally divided into inner lining pipes and outer layer pipes, but traditional bimetallic wear-resistant pipes generally only have outer layer pipes It is made of stainless steel, and the outer pipe is usually made of high-chromium cast iron. High-chromium cast iron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/02C22C38/06C22C38/44C22C38/48C22C38/52C22C38/60F16L9/04B29C64/10B33Y10/00B33Y70/00B22D13/02C21D9/08C21D1/26C21D1/25C09D161/06C09D201/00C09D123/14C09D123/12C09D153/00C09D123/06C09D127/06C09D5/08
CPCC22C38/001C22C38/58C22C38/02C22C38/06C22C38/44C22C38/48C22C38/52C22C38/60C22C38/002F16L9/04B29C64/10B33Y10/00B33Y70/00B22D13/02C21D9/08C21D1/26C21D1/25C21D9/085C09D161/06C09D201/00C09D5/08C09D5/18C08L2201/08C08L2203/18C08L23/14C08L23/12C08L53/00C08L23/06C08L27/06
Inventor 潘爱军
Owner 江苏鑫都管业有限公司
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