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Surface treating method of galvanizing colourful coating steel plate for tear-off tin pull ring

A technology of color-coated steel sheets and galvanized steel sheets, which is applied in coating, surface pretreatment, metal material coating process, etc., can solve problems such as low tensile strength, breakage of pull rings, and inability to pull open can seals. Good tensile strength and corrosion resistance, improved production efficiency, and reduced material costs

Inactive Publication Date: 2011-04-13
福建凯景新型科技材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low tensile strength of the aluminum alloy plate, it is easy to cause the seal of the can to not be opened, the pull ring to be damaged or broken.
Although the electroplated tin plate has good tensile strength, after being stamped and formed, black rust and corrosion are prone to occur at the incision.

Method used

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  • Surface treating method of galvanizing colourful coating steel plate for tear-off tin pull ring
  • Surface treating method of galvanizing colourful coating steel plate for tear-off tin pull ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the galvanizing annealing furnace, the cold-rolled steel plate is annealed and galvanized. The thickness of the cold-rolled steel plate is 0.3 mm, and the line speed is 80 m / min. At this time, the annealing temperature is 640 ° C, and the plate temperature after cooling is 500 ° C. At this time, the surface Rockwell hardness of the resulting galvanized steel sheet reached HR30T65. On the paint-baking line, both sides of the galvanized steel sheet with a Rockwell hardness of HR30T65 are coated with a layer of aluminum powder epoxy resin coating, the thickness of the plate is 0.3mm, and the line speed is 70 m / min. Coatings (such as aluminum powder epoxy resin coatings purchased from Suzhou Sanxin Packaging Coatings Co., Ltd.), the viscosity of aluminum powder epoxy resin coatings is 48 seconds (in Iwata No. 3 cup, when the temperature is 20 ° C), the speed of the paint roller Be 18 meters per minute, the speed of the coating roller is 80 meters per minute, the paint ro...

Embodiment 2

[0018] In the galvanizing annealing furnace, the cold-rolled steel sheet is annealed and galvanized. When the thickness of the cold-rolled steel sheet is 0.4mm, the line speed is 90 m / min. At this time, the annealing temperature is 670°C, and the plate temperature after cooling is 560°C. , At this time, the surface Rockwell hardness of the obtained galvanized steel sheet reaches HR30T70. On the paint-baking line, both sides of the galvanized steel sheet with a surface Rockwell hardness of HR30T 70 are coated with a layer of aluminum powder epoxy resin coating, the thickness of the plate is 0.4mm, and the line speed is 70 m / min. Resin coating, the viscosity of aluminum powder epoxy resin coating is 48 seconds (at Iwata No. 3 cup, when the temperature is 20 ℃), the speed of paint roller is 25 m / min, and the speed of coating roller is 100 m / min. Moving opposite to the coating roller, the thickness of the aluminum powder epoxy resin paint coating is 7 μm, and the target product is...

Embodiment 3

[0020] In the galvanizing annealing furnace, the cold-rolled steel sheet is annealed and galvanized. When the thickness of the cold-rolled steel sheet is 0.4mm, the line speed is 100 m / min. At this time, the annealing temperature is 700°C, and the plate temperature after cooling is 600°C. , At this time, the surface Rockwell hardness of the resulting galvanized steel sheet reaches HR30T 75. On the paint-baking line, both sides of the galvanized steel sheet with a Rockwell hardness of HR30T 75 are coated with a layer of aluminum powder epoxy resin coating. Resin coating, the viscosity of aluminum powder epoxy resin coating is 48 seconds (at Iwata No. 3 cup, when the temperature is 20 ℃), the speed of the paint roller is 35 m / min, and the speed of the coating roller is 110 m / min. Moving opposite to the coating roller, the thickness of the aluminum powder epoxy resin paint coating is 7 μm, and the target product is obtained.

[0021] Table 1 shows the test comparison results bet...

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Abstract

The present invention provides a surface treating method of a galvanizing colourful coating steel plate for a tear-off tin pull ring, comprising that: a. cold-rolled steel sheet annealing galvanizing and b. stoving varnish which makes a layer of powdered aluminium epoxide resin paint is respectively coated on two sides of the galvanized steel sheet after annealing galvanizing with the hardness ofHR 30T 65-75 and controls the roller speed of the coated running roller assembly and the thickness of the powdered aluminium epoxide resin coating and finally obtains the galvanizing colourful coating steel plate for the tear-off tin pull ring. The galvanizing colourful coating steel plate has good tensile strength and corrosion resistance after varnish stoving and the produced tear-off tin pull ring is prevented from damaged, pulled apart and rusted. The invention greatly reduces the material cost and improves the productivity effect.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to a method for surface treatment of galvanized color-coated steel sheets used for pull rings of pop cans. Background technique [0002] The traditional material for making the pull ring of the can is generally 0.3mm aluminum alloy plate or electroplated tin steel plate. Due to the low tensile strength of the aluminum alloy plate, it is easy to cause the seal of the can to be unopened, and the pull ring to be damaged or broken. Although the electroplated tin-plated steel sheet has good tensile strength, it is prone to black rust and corrosion at the incision after being stamped and formed. Therefore, both of the above two materials have more or less problems in the manufacture of pop can rings, while the galvanized color-coated steel sheet can meet the requirements of various aspects, and at the same time has low cost, which is very suitable for manufacturing pop can rings. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/40C23C2/06C23C2/26C21D1/26C21D8/02B05D7/14B05D1/28B05D3/02B65D17/34
Inventor 陈振常陈政贤林顺发
Owner 福建凯景新型科技材料有限公司