Ultra-low carbon steel coil for ultra-thin casing of oil filter and manufacturing method thereof

Abstract

The invention discloses an ultra-low carbon steel coil plate for an ultra-thin casing of an oil filter and a manufacturing method thereof. The chemical composition of the ultra-low carbon steel coil plate by weight percentage is: C: 0.0028-0.0050%, Si: ≤ 0.030%, Mn: 0.45~0.55%, P: ≤0.012%, S: ≤0.008%, Al: 0.045~0.080%, Ti: 0.065~0.085%, N: ≤0.0030%; Finish rolling to obtain a hot-rolled sheet, with a coiling temperature of 590-630 °C; then cold-rolling the hot-rolled coil, the cold rolling reduction rate is 80-90%, the annealing temperature is 700-760 °C, and the flat elongation is 1.0-2.0% + drawing Straightening the elongation rate of 0.03-0.10% to obtain an ultra-low carbon steel coil with a thickness of 0.30-0.44mm, its properties: Rel 220-270MPa, Rm 330-390MPa, hardness 54-60HR30T, elongation A 80 ≥40%. The product has higher strength, better ductility, uniform structure and properties, good isotropic homogeneity, good deep-drawing performance, no ear-making, and can completely replace the traditional 0.50-0.70mm thick specification material to meet automotive Parts thinning and lightweight requirements.

Description

technical field [0001] The invention relates to the technical field of metal material manufacturing, in particular to the technical field of cold-rolled steel strip manufacturing, in particular to an ultra-low carbon steel coil for an ultra-thin casing of an oil filter and a manufacturing method thereof. Background technique [0002] The oil filter is composed of a shell and a paper filter element, the paper filter element is inside the shell, and the shell is sealed with a threaded cover. The dirty oil pumped by the oil pump enters from 4 to 10 small holes reserved on the threaded cover plate, pushes the one-way valve at the opening of the oil filter and enters the periphery of the filter element, and after being filtered by the filter element, the clean oil enters the middle of the filter element , and then discharged from the oil outlet in the middle of the threaded cover plate to lubricate each movement pair of the car. The oil filter is mainly used to remove impurities...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an ultra-low carbon steel coil for an ultra-thin casing of an oil filter and a manufacturing method thereof to produce ultra-low carbon steel with a thinner thickness range in view of the deficiencies in the prior art Coil, the ultra-low carbon steel coil has higher strength, higher ductility, uniform structure and performance, no cracking in stamping, no tensile strain lines, uniform deformation of deep-drawing circular parts, no or reduced stress Ear defects and other advantages, the ultra-thin range of 0.30-0.44mm thick meets the pressure-bearing and deformation-resistant requirements of the ultra-thin shell of the oil filter. At the same time, the production process of the ultra-low carbon steel coil is simple, easy to operate, and high in production efficiency.

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