Tinning substrate for deep-punching food can and production method thereof

Abstract

The invention relates to a steel metallurgical material, in particular to a tinning substrate for deep-punching food cans and a production method thereof. The tinning substrate comprises the following chemical element compositions in percentage by weight: less than or equal to 0.04% of C; less than or equal to 0.02% of Si, 0.20-0.25% of Mn, less than or equal to 0.02% of P, less than or equal to 0.018% of S, 0.005-0.040% of Als, and the balance iron and unavoidable inclusion. The production method comprises the following processes: smelting, continuous casting, heating, hot rolling, cooling and reeling, pickling and cold rolling, and annealing and leveling, wherein the heating temperature is 1210 DEG C, the primary rolling temperature is 1100-1150 DEG C, the final rolling temperature is 890+/-10 DEG C, the reeling temperature is 560+/-15 DEG C, the annealing temperature is 670-690 DEG C, and others are performed as conventional processes. The invention has small production control difficulty, low cost, stable performance and high can manufacturing percent of pass, and is suitable for manufacturing deep-punching food cans and can covers with more complex transformation.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgical materials, and in particular relates to a tinned substrate for deep-drawn food cans and a production method thereof. Background technique [0002] Tinplate is a naturally degradable and environmentally friendly packaging material. In addition to its preservation, light resistance, sturdiness and unique metal decoration charm, the consumption of tinplate in food cans and beverage cans accounts for about 90% of the total output. However, in recent years, due to the increase in the price of steel and the increase in the cost of tin-plated plates, plastic packaging has a tendency to replace metal packaging in many fields. The development of new low-cost tin-plated substrates for deep drawing is the future development direction of steel for food packaging. [0003] At present, the quality of tin-plated substrates produced by domestic enterprises is not ideal, the chemical composition and per...

AI Technical Summary

Problems solved by technology

[0005] At present, at home and abroad, there are many studies on the properties of tin-plated substrates for special purposes and cold rolling and annealing processes, but there are few studies on the properties and properties of tin-plates in hot-rolled state.