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Corrosion-resistant abrasion-resistant composite metal plate suitable for high-temperature working condition

A high-temperature, corrosion-resistant technology, used in the field of heat-resistant, wear-resistant and corrosion-resistant composite plates, and corrosion-resistant and wear-resistant composite metal plates. , the effect of reducing transverse cracks

Inactive Publication Date: 2014-11-26
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the existence of transverse microcracks on the surface of existing surfacing heat-resistant and wear-resistant composite plates, which are not suitable for anti-wear problems under high-temperature and corrosion conditions, the purpose of the present invention is to provide a corrosion-resistant and wear-resistant composite metal plate suitable for high-temperature conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028](1) Prepare surfacing welding flux-cored welding wire, the diameter of the welding wire is Ф2.8mm, and the steel strip is SPCC with a thickness of 0.35mm. 2.0%, Si 2.0%, Mn 4.0%, Mo 4.0%, W 5.0%, Ti 0.8%, Al 2.0%, Mg 1.5%, and the balance is Fe and impurities that do not affect the performance of the powder.

[0029] (2) Select Q235 low-carbon steel plate as the substrate, the size of the substrate is 1m×2m, and the thickness is 8mm. The four sides of the substrate are rigidly fixed on the welding platform by mechanical clamping.

[0030] (3) Single gun surfacing welding, the first welding bead is located in the center of the substrate width, and the surfacing welding is along the length direction of the substrate. The welding torch does not swing horizontally during surfacing, and the width of the weld bead is 20mm. After the surfacing of the first welding pass is completed, the other welding passes are surfacing alternately on both sides of the first welding pass, an...

Embodiment 2

[0036] (1) Prepare surfacing flux-cored welding wire, the diameter of the welding wire is Ф3.2mm, the steel strip is SPCC with a thickness of 0.35mm, and the composition of the deposited metal of the flux-cored welding wire is 3.0% by mass percentage, C is 3.0%, Cr is 20%, and Si is 1.0%, Mn is 3.0%, Mo is 3.5%, W is 4.5%, Ti is 0.2%, Al is 1.5%, Mg is 1.0%, and the rest is Fe and impurities that do not affect the performance of the powder.

[0037] (2) Select Q345 steel plate as the substrate, the size of the substrate is 1m×2m, and the thickness is 12mm. The four sides of the substrate are rigidly fixed on the welding platform by mechanical clamping.

[0038] (3) Single gun surfacing welding, the first welding bead is located in the center of the substrate width, and the surfacing welding is along the length direction of the substrate. During surfacing welding, the welding torch swings laterally, the swing amplitude of the welding torch swing is 10mm, the swing frequency is...

Embodiment 3

[0044] (1) Prepare surfacing welding flux-cored welding wire, the diameter of the welding wire is Ф3.2mm, the steel strip is SPCC with a thickness of 0.35mm, and the composition of the deposited metal of the flux-cored welding wire is 4.2%, Cr is 28%, and B is 2.5%, Si is 2.5%, Mn is 5.0%, Mo is 4.2%, W is 5.5%, Ti is 1.2%, Al is 2.5%, Mg is 2.0%, and the rest is Fe and impurities that do not affect the performance of the powder.

[0045] (2) Select Q345 steel plate as the substrate, the size of the substrate is 1m×2m, and the thickness is 20mm. The four sides of the substrate are rigidly fixed on the welding platform by mechanical clamping.

[0046] (3) Single gun surfacing welding, the first welding bead is located in the center of the substrate width, and the surfacing welding is along the length direction of the substrate. During surfacing welding, the welding torch swings laterally, the swing amplitude of the welding torch is 20mm, the swing frequency is 20 times / min, an...

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Abstract

The invention discloses a corrosion-resistant abrasion-resistant composite metal plate suitable for a high-temperature working condition, and the corrosion-resistant abrasion-resistant composite metal plate is prepared through the following steps of: obtaining a heat-resistant corrosion-resistant abrasion-resistant composite metal plate blank by taking a low-carbon steel plate or a low-alloy steel plate as a base plate and overlaying a composite layer on the surface of the base plate by adopting a special heat-resistant corrosion-resistant abrasion-resistant overlaying flux-cored wire; and then carrying out seam sealing processing on cracks positioned on the surface of a smoothed composite metal plate blank by using a prepared special seal sealing agent. According to the invention, by preparing the special heat-resistant abrasion-resistant corrosion-resistant overlaying flux-cored wire and overlaying by adopting an open-arc welding process, the deformation of the overlaying composite plate is reduced, the transverse cracks of a welding pass are decreased and uniformly distributed; and the corrosion-resistant property of the composite metal plate is outstandingly enhanced in such a way that the seam sealing agent is effectively permeated into the transverse cracks, so that the service life of the composite metal plate in high temperature and corrosion working conditions is outstandingly prolonged.

Description

technical field [0001] The invention relates to a composite material, in particular to a corrosion-resistant and wear-resistant composite metal plate suitable for high-temperature working conditions, that is, a heat-resistant, wear-resistant and corrosion-resistant composite plate. Background technique [0002] Metal wear is one of the main reasons for the failure of mechanical parts, and the loss is staggering. According to incomplete statistics of my country's metallurgy, coal, electric power and other industries, the annual wear loss is as high as 2 billion yuan. According to the working environment of wear-resistant parts, it is divided into normal temperature and high-temperature working conditions. In addition to wear, high-temperature working conditions also have high-temperature oxidation problems, so the requirements for wear-resistant parts are higher under high-temperature working conditions. If working in a high-temperature corrosive environment, the manufacturi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K35/24B23K37/00
Inventor 孙俊生栾守成李宁洋孙逸群
Owner SHANDONG UNIV
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