High-strength packaging steel strip and its manufacturing process

Patent Name High-strength packaging steel strip and its manufacturing process Patent Applicant Wang Hongwei Principal Applicant Address 114041 Liaoning Province Anshan City Qianshan District Old Fort Man Min Street No. 38 Inventor Wang Hongyu Application (Patent) No. 200410031162.8 Date of Application 2004.04.13 Certification Date Approval Notice No. 1683582 Auditing Notice Day 2005.10.19 Instruction CD-ROM D0542 Main Classification No. C22C38/04 Classification No. C22C38/04; C21D8/04 Sub-item Original Application No. Priority Abstracts This invention is in the field of packaging steel strips, and in particular relates to a High-strength packaging steel strip and its manufacturing process. The carbon-manganese steel hot-rolled coil board is used as a raw material, and the carbon-manganese steel comprises the following components (weight percentage): C: 0.15-0.28%; Si: 0.005-0.07%; Mn: 1.20-1.70%; P: 0.005-0.025%; S: 0.0005-0.015%; Als: 0.015-0.10%, and the balance is Fe. The coil is cold-rolled after slitting and pickling, and then the cold-rolled strip is sent to continuous heating. In the furnace, the strip is heated to 400-600°C. After the strip is cooled, the tensile strength of the high-strength packaging strip obtained is not less than 930 MPa, and the elongation is not less than 8%. The high-strength packaging steel strip of the present invention not only has stable mechanical properties and can meet the performance requirements of high-strength packaging steel strips, but also has a manufacturing process that can replace the traditional lead-bath-quenching heat treatment process for manufacturing high-strength packaging steel strips and has a low cost. No pollution. Sovereignty Item 1. A high-strength packaging steel strip, characterized in that the high-strength packaging steel strip is a carbon-manganese steel mainly containing the following components: C: 0.15-0.28%; Si: 0.005-0.07%; Mn : 1.2 to 1.7%; P: 0.005 to 0.025%; S: 0.0005 to 0.015%; Als: 0.015 to 0.10%, and the balance is Fe, and the percentages are percentages by weight. International Application International Announcement Date of Entry into the Country Patent Agencies Beijing Lucheng Business IP Agency Co., Ltd. Agency Address Xu Jinguo