Lightweight composite steel plate

By using lightweight composite steel plates with a bottom-up stacked structure in the petroleum industry, the problems of lightweighting, corrosion resistance, and wear resistance in the petroleum industry have been solved, achieving long-term corrosion resistance reliability and structural integrity in extreme environments, and reducing maintenance costs.

CN224159033UActive Publication Date: 2026-04-24QUANZHOU YUXIANG PETROCHEMICAL MASCH MFG CO LTD
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Patent Information

Application Number
CN202521511683.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-18
Publication Date
2026-04-24
Estimated Expiration
2035-07-18

AI Technical Summary

Technical Problem

Existing technologies struggle to produce lightweight, corrosion-resistant, wear-resistant, and high-rigidity composite materials in the extreme environments of the petroleum industry. Furthermore, existing materials are either too expensive or have insufficient performance, making them unsuitable for long-term effective protection in petroleum environments.

Method used

The lightweight composite steel plate adopts a bottom-up stacked structure, including a bottom bidirectional steel surface layer, an aluminum alloy honeycomb core layer, an upper structural adhesive layer, and an upper bidirectional steel surface layer. Combined with stainless steel edging, sealant, and insulating ceramic fiber tape, it forms a sealed package, blocks galvanic corrosion channels, and enhances corrosion resistance.

Benefits of technology

It achieves lightweight design and long-term corrosion resistance in the extreme environment of the petroleum industry, reduces reliance on vulnerable coatings, lowers maintenance costs, and improves structural integrity.

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Abstract

The utility model relates to the technical field of composite plates, in particular to a lightweight composite steel plate which comprises a lower two-way steel surface layer, a lower structural adhesive layer, an aluminum alloy honeycomb core layer, an upper structural adhesive layer and an upper two-way steel surface layer which are sequentially laminated from bottom to top, and a circle of stainless steel covered edge is welded and sealed along the peripheral contour of the laminated structure. Sealant and an insulating ceramic fiber belt are filled in the joint positions of the stainless steel covered edge and the lower bidirectional steel surface layer and the upper bidirectional steel surface layer. Petroleum corrosion media are directly resisted through the dual-phase steel panel, the weight is effectively reduced through the aluminum alloy honeycomb core structure, a continuous closed structure is formed through stainless steel covering edges and sealing filling on the edges, external corrosion media are prevented from invading, and the long-term corrosion resistance reliability of the material in a harsh petroleum environment is improved while the structural strength is guaranteed; and the maintenance dependence of the traditional anti-corrosion coating is reduced.
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