4J42 kovar alloy hot continuous rolling plate coil and acid pickling surface treatment process

By setting a shielding mechanism and cleaning mechanism on the sides of the 4J42 Coval alloy plate, the problems of scale adhesion and laminar flow cooling pipe are solved, and the surface quality and production efficiency are improved.

CN120551185APending Publication Date: 2025-08-29山东盛阳金属科技股份有限公司
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Patent Information

Application Number
CN202510789869.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-13
Publication Date
2025-08-29

AI Technical Summary

Technical Problem

In the prior art, during the hot rolling and pickling process of 4J42 Coval alloy plate, oxide scale and impurities are easily adhered to the surface of the metal strip, resulting in a decrease in surface quality, and the laminar cooling pipe is easily blocked, affecting production efficiency.

Method used

The upper and lower shutters are used to block the sides of the Kerva alloy plate to prevent the accumulation of oxide scales. The combination of cleaning mechanisms is used to discharge the oxide scales through the gaps between the shaft sleeves and the rotating rollers, and the stubborn oxide scales are cleaned through the cleaning brushes and cleaning boards on the chain plate to prevent the chain plate from being stuck and scratched. At the same time, the laminar flow cooling device is used to improve cooling uniformity.

Benefits of technology

Effectively prevent the accumulation of oxide scales and the chain plates from getting stuck, improve the pickling efficiency, ensure the surface quality of the metal strip and the uniformity of laminar flow cooling, avoid scratches and clogs, and improve production efficiency.

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Abstract

The invention discloses a 4J42 Kovar alloy hot continuous rolling plate coil and a pickling surface treatment process. The 4J42 Kovar alloy hot continuous rolling plate coil is characterized in that a Kovar alloy plate comprises the following chemical components in percentage by weight: not less than 40% and not more than 43% of Ni, not more than 1.0% of Co, not more than 0.05% of C, not more than 0.8% of Mn, not more than 0.3% of Si and not more than 0.02% of P; s is less than or equal to 0.02%; the process comprises the following steps: 1) preparing materials and heating; 2) rough rolling; (3) descaling; 4) finish rolling; 5) laminar cooling; (6) coiling; (7) uncoiling and welding; 8) annealing; 9) pickling; 10) cleaning and drying; the laminar cooling device comprises a rack and a cooling mechanism; the rack is fixed on the ground; the cooling mechanism is mounted on the rack; the pickling device comprises a box body, a feeding hole and a discharging hole; the box body is fixed to the ground, and the feeding port and the discharging port are located in the two ends of the box body respectively. The laminar flow pipe below the kovar alloy plate is prevented from being blocked; the oxide skin can be prevented from being accumulated on the two sides of the chain plate, and the accumulated oxide skin can be prevented from scratching the side wall of the kovar alloy plate.
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