Cold-rolled electrotinned steel plate with excellent coating performance and manufacturing method thereof
A technology of electroplating tin and performance, applied in the direction of metal material coating process, chromate treatment, etc., can solve the problems of poor coating performance of cold-rolled electroplated tin steel plate, difficult to cover evenly with ultra-thin primer coating, etc. Excellent installation performance, low production cost, and the effect of reducing difficulty
Active Publication Date: 2021-03-23
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide a cold-rolled tin-plated steel sheet with excellent coating performance and its manufacturing method, so as to solve the problem of poor coating performance of cold-rolled tin-plated steel sheet in the prior art and the ultra-thin primer coating that exists when using it to make cans. Difficult to cover technical issues evenly with layers
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[0034] The present invention will be further described below in conjunction with Examples 1-4, as shown in Table 1-Table 10.
[0035] A method for manufacturing a cold-rolled tin-plated steel sheet with excellent coating properties, the method comprising:
[0036] Alkali washing, pickling, electro-tinning, reflow, passivation, oiling, coiling to obtain the finished product on the cold-rolled electro-tin plated substrate with a thickness of 0.20-0.30mm, wherein,
[0037] The chemical composition weight percent of the cold-rolled tin-plated substrate is: C: 0.04-0.10%, Si≤0.03%, Mn: 0.10-0.30%, P≤0.02%, S≤0.02%, Cu≤0.01%, Alt: 0.02-0.05%, N≤0.0045%, the balance is Fe and unavoidable impurity elements; the surface roughness Ra of cold-rolled tin-plated substrate is 0.7-1.2um, RPc is 150-230 / cm, Rz is 2.8-3.5 um; the lower yield strength of the cold-rolled tin-plated substrate is 330-450MPa, the tensile strength is 350-450MPa, and the elongation after fracture is 15-30%;
[0038...
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Abstract
The invention relates to a cold-rolled electrotinned steel plate with excellent coating performance and a manufacturing method thereof, and solves the technical problems that a cold-rolled electrotinned steel plate in the prior art is poor in coating performance, and an ultrathin base oil coating is difficult to uniformly cover when the cold-rolled electrotinned steel plate is used for manufacturing cans. The invention discloses the cold-rolled electrotinning steel plate with the excellent coating performance. A cold-rolled electrotinning base plate comprises the following chemical componentsincluding, by weight, 0.04%-0.10% of C, less than or equal to 0.03% of Si, 0.10%-0.30% of Mn, less than or equal to 0.02% of P, less than or equal to 0.02% of S, less than or equal to 0.01% of Cu, 0.02%-0.05% of Alt, less than or equal to 0.0045% of N and the balance Fe and inevitable impurity elements; and the surface roughness Ra of the cold-rolled electrotinning steel plate is 0.6-1.0 micron, and the surface free energy is 40-46 J / m<2>. The cold-rolled electrotinning steel plate is low in production cost and excellent in coating performance.
Description
technical field [0001] The invention relates to a cold-rolled tin-plated steel sheet and a manufacturing method thereof, in particular to a cold-rolled electro-tinned steel sheet with excellent coating performance and a manufacturing method thereof, in particular to a steel sheet used for manufacturing a bare inner wall and a super-coated outer wall. The invention discloses a cold-rolled electrotinned steel plate for a food and beverage can body with a thin bottom oil coating and a manufacturing method thereof, belonging to the technical field of iron-based alloys and the field of metal packaging materials. Background technique [0002] Cold-rolled tin-plated steel sheet is the main packaging material in the food packaging industry. With the improvement of people's living standards, the application scope and consumption of cold-rolled tin-plated steel sheet are increasing day by day. Cold-rolled tin-plated steel sheet has many advantages such as firmness, beauty, and good fo...
Claims
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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/16C23C22/24C25D3/32C25F1/06C25D5/36C25D11/38
CPCC22C38/02C22C38/04C22C38/002C22C38/16C22C38/06C22C38/001C25F1/06C25D3/32C23C22/24C25D5/36C25D11/38
Inventor 陆永亮曹美霞王孝建王志登谢志刚戴伟伟
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD