High-strength bimetal bent or straight pipeline

A bimetallic, high-strength technology, applied in the field of materials, can solve problems such as low operating efficiency, wear resistance, heat resistance, corrosion resistance, mechanical strength, and impact resistance that cannot meet actual production needs, so as to improve mechanical impact resistance. Effect

Inactive Publication Date: 2012-04-04
江苏联兴成套设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Steel plant blast furnace slag system, power plant coal powder, dry ash, coal powder and other conveying systems, and other powder and pneumatic conveying systems generally use 16Mn seamless steel pipes, which are wear-resistant, heat-resistant, corrosion-resistant, and have mechanical strength and impact resistance. etc. cannot meet the actual production needs, and the operating efficiency is low

Method used

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Examples

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Embodiment Construction

[0011] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0012] The high-strength bimetal curved straight pipe of the present invention is cast from inner lining and outer wall of different materials, the inner lining material of the pipe is alloy steel, and the outer wall of the pipe is welded pipe or seamless pipe.

[0013] The casting method is lost foam vacuum suction casting or centrifugal casting.

[0014] The chemical composition of the lining material includes C, Mn, Si, S, P, V, Cr, Ni, Mo, Cu, Re and other elements. The contents of each element are: C: 1.10% ~ 1.60%, Mn: 0.5% ~ 1.2%, Si: 0.4% ~ 0.7%, S, P: ≤0.05%, V: 0.1% ~ 0.4%, Cr: 24.0 %~28.0%, Ni: 0.3%~0.9%, Mo: 0.1%~0.3%, Cu: 0.2%~0.5%, Re: 0.2%.

[0015] The mechanical properties achieved by the pipeline of the present inventio...

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Abstract

The invention discloses a high-strength bimetal bent or straight pipeline which is characterized by comprising a lining and an outer wall which are made of different materials through casting, wherein the pipeline lining is made of alloy steel, and the pipeline outer wall is a welded pipe or seamless pipe. The high-strength bimetal bent or straight pipeline is compounded by lost foam vacuum suction casting or formed by centrifugal casting, an alloy steel lining with wear resistance, heat resistance and corrosion resistance is compounded in an ordinary steel pipe, the actual requirements of wear resistance, heat resistance and corrosion resistance for the pipeline can be satisfied, and the mechanical impact resistance and thermal impact resistance of the pipeline can also be improved. The high-strength bimetal bent or straight pipeline can completely replace the 16 Mn seamless steel pipe, can be made into various shapes including straight pipes, bent pipes, special pipes, reducing pipes and the like and become a first-choice pipeline in the blast furnace water granulated slag system in steel plants, transportation systems of power plant coal dust, dry ash, coal dust and the like and other powder and gas transportation systems.

Description

technical field [0001] The invention relates to a high-strength bimetal pipeline, which belongs to the technical field of materials. Background technique [0002] Steel plant blast furnace slag system, power plant coal powder, dry ash, coal powder and other conveying systems and other powder, pneumatic conveying systems generally use 16Mn seamless steel pipes, which are wear-resistant, heat-resistant, corrosion-resistant, and have mechanical strength and impact resistance. etc. can not meet the actual production needs, and the operation efficiency is low. How to use new materials and new processes to develop new pipes that meet various performance requirements to replace original products has become a new research content. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-strength bimetal curved straight pipe instead of 16Mn seamless steel pipe, which can not only meet the actual requirements of the pipe fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/04
Inventor 王志斌
Owner 江苏联兴成套设备制造有限公司
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