5 results about "Aluminized steel" patented technology

A high-surface-quality aluminum-clad laminate / strip steel suitable for nitriding and its production method are disclosed. The steel's chemical composition (by weight percentage) is as follows: C 0.01–0.07%, 0 < Si ≤ 0.005%, Mn 0.4–1.2%, P 0.008–0.020%, S ≤ 0.008%, 0 < Al ≤ 0.005%, Cr 0.03–0.60%, N 0.011–0.030%, 0 < O ≤ 0.01%, Cu 0.01–0.15%, Ca 0.001–0.004%, with optional addition of Ti 0.01–0.06%, Nb 0.01–0.03%, and V. One or more of the following components are present in the range of 0.01% to 0.03%, with the balance including Fe and unavoidable impurities; and simultaneously satisfying the following conditions: 0.5C + 3.83N + O + 0.05Cu + 0.047Cr - 0.89Al - 1.15Si ≥ 0.085; 150(C - 0.01) + 60P + 300N + 5Mn + 3Cr ≥ 12.0. The obtained steel plate has high strength, excellent plasticity and aluminizing properties, and eliminates defects such as surface peeling and slag inclusions. Aluminized steel sheets and strips produced from this steel have excellent surface quality and high strength, and can meet the requirements of subsequent high-temperature nitriding processes. They are mainly used for the production of aluminized steel sheets and strips for woks or other applications requiring high strength.

A coated steel sheet includes a steel strip and an aluminum-based coating. In some versions, the steel sheet includes, in percent weight: carbon: less than 0.020%, manganese: less than 0.40%, aluminum: less than 0.015%, nitrogen: less than 0.008%, and the balance including iron and impurities. The steel strip includes a free nitrogen concentration of greater than 40 parts per million (PPM). The aluminum-based coating is disposed on at least one surface of the steel strip.

The application discloses a kind of plating adhesion detection system and detection method, belong to metal material surface plating detection technical field.Detection system includes deformation mould, flat mould and hydraulic press, deformation mould includes bi-convex upper die and bi-concave lower die, respectively installed on hydraulic press for sample stamping deformation;Flat mould can be detachably installed on hydraulic press, for flattening after sample deformation.Detection method includes: sample is placed on bi-concave lower die, and hydraulic press drives bi-convex upper die to go down and carries out simulation stamping deformation;After sample deformation, it is placed into flat mould and flattened;Paste adhesive tape in flattening area and tear, observe whether to take out plating fragment to judge adhesion.The application truly simulates the composite stress under the condition of stamping R angle or flanging by bi-convex upper die and bi-concave lower die cooperation, combined with flat tape detection, with the advantages of simple structure, low cost, convenient operation, high detection accuracy, suitable for galvanizing, aluminizing steel coil production line on-site rapid off-line detection.

Preparing a coated steel including the steps of hot rolling or cold rolling, slurry blasting, and coating. The step of hot rolling or cold rolling including rolling a steel ingot to form a steel strip. The step of slurry blasting including slurry blasting at least one side of the steel strip. The step of coating being performed after slurry blasting and including coating the steel strip with an aluminum-based coating.

The present invention relates to a hot-formed part used for automobile parts and the like and relates to a hot-formed part manufactured by hot-forming an aluminized steel material and a method for manufacturing same.