Hot-formed steel pressure riveting method
By rapidly heating the riveting points of hot-formed steel plates before riveting, the hardness of the steel plates is reduced by utilizing the spheroidization or tempering effect of pearlite, thus solving the problem that fasteners cannot be pressed in when high-strength steel plates are cold-riveted, and achieving efficient and reliable riveting.
CN121244784APending Publication Date: 2026-01-02PENNENGINEERING AUTOMOTIVE FASTENERS (KUNSHAN) CO LTD
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Patent Information
- Application Number
- CN202511697054.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-01-02
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Figure CN121244784A_ABST
Abstract
The invention relates to a hot forming steel pressing riveting method. The hot forming steel pressing riveting method comprises the steps that the austenitizing completion temperature of a hot forming steel plate is obtained; the hot forming steel plate is heated with the riveting point of the hot forming steel plate as the center, so that the riveting point is heated to the preset softening heating temperature, and the preset softening heating temperature is lower than the austenitizing completion temperature; after the hot forming steel plate is continuously heated for preset time, heating is stopped; and after the nut is aligned to the position of the riveting point, the workpiece is pressed and riveted. According to the method, the riveting point can be rapidly heated before pressing riveting, the thermal forming steel plate is softened, riveting is achieved under the condition that the strength of the steel plate is higher than that of a fastener, and deformation or breakage of a nut and the like of the fastener is avoided.
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