一种防裂钣金件
By setting arc transition sections, pre-embedded reinforcing mesh, and reinforced structures on sheet metal parts, combined with elastic buffer layers and surface coatings, the problem of easy cracking of sheet metal parts is solved, achieving efficient improvement in crack resistance and lightweight design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI JINHANG MASCH EQUIP CO LTD
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional sheet metal parts are prone to cracking during processing and use, especially when bending, punching, and subjected to alternating loads for a long time. Stress concentration areas are prone to fatigue cracks. Existing technologies such as increasing thickness or local heat treatment have limited effectiveness and are costly.
The sheet metal body is made of 5mm thick cold-rolled steel plate or aluminum alloy plate, with arc transition section and embedded reinforcing mesh, combined with edge reinforcing ribs and surface reinforcing protrusions, elastic buffer layer is pasted on the back, and phosphate layer and electrophoretic coating are formed on the surface.
Through the synergistic effect of the arc transition section, the pre-embedded reinforcing mesh, and the reinforced structure, the crack resistance is significantly improved, the failure risk is reduced, the lightweight requirements are met, the overall rigidity and durability are enhanced, and cracks are prevented.
Smart Images
Figure CN224516497U_ABST
Abstract
Claims
1. A crack resistant sheet metal part, characterized by: It includes a sheet metal body (1), a reinforcing structure (2), and a buffer structure (3); The sheet metal body (1) is made of cold-rolled steel plate or aluminum alloy plate with a thickness of 5mm, and has an arc transition part (101) at the bending point. The reinforcing structure (2) includes edge reinforcing ribs (201) and surface reinforcing protrusions (202). The edge reinforcing ribs (201) are continuously arranged along the edge of the sheet metal body (1) and have an inverted V-shaped cross section. The surface reinforcing protrusions (202) are evenly distributed in a grid pattern on the surface of the sheet metal body (1), with a protrusion height of 2mm and a semi-circular cross section. The buffer structure (3) is an elastic buffer layer (301) pasted on the back of the sheet metal body (1), made of nitrile rubber or polyurethane material with a thickness of 1mm. The side of the elastic buffer layer (301) away from the sheet metal body (1) is provided with a wavy texture (302).
2. The split-resistant sheet metal part of claim 1, wherein: The sheet metal body (1) has an embedded reinforcing mesh inside the bending part. The embedded reinforcing mesh is woven from stainless steel wire with a diameter of 0.1-0.3mm and a mesh count of 20-40. The embedded reinforcing mesh and the sheet metal body (1) are formed into an integral structure by stamping.
3. The split-resistant sheet metal part of claim 1, wherein: The connection between the edge reinforcing rib (201) and the sheet metal body (1) is reinforced by laser welding.
4. The split-resistant sheet metal part of claim 1, wherein: The surface of the sheet metal body (1) is sequentially provided with a phosphate layer and an electrophoretic coating. The thickness of the phosphate layer is 5-15μm, and the thickness of the electrophoretic coating is 10-30μm.