A kind of production method of composite coating strapping for metal mirror article packaging

A composite coating and production method technology, applied in metal material coating process, coating, hot dip coating process and other directions, can solve the problem of easily damaged and bundled surfaces, decreased specular reflectivity of coating, decreased coating stability, etc. problems, to achieve the effect of improving the finish, reducing the surface roughness, and improving the corrosion resistance.
CN104726663BInactive Publication Date: 2017-03-22武汉钢铁有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
武汉钢铁有限公司
Publication Date
2017-03-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a production method of a composite coating packing tape for metal mirror article packaging, which comprises the following steps: carrying out cold rolling and conventional degreasing; tape preparation: uncoiling, stripping, and deburring; carrying out Zn hot dip; carrying out primary water washing and drying; electroplating Sn-Co or Sn-Ni; carrying out chromate passivation; carrying out secondary water washing and drying; and carrying out conventional coiling. The thickness of the product is 0.35mm, the tensile strength is 800-850 MPa, and the elongation percentage is 9-10%. A uniform compact high-adhesion Zn / Sn-Co or Zn / Sn-Ni composite coating with the thickness of 5-7 mu m is generated on the surface. The coating is bright white or black, the surface roughness of the coating is 0.2-0.4 mu m, the reflectivity is 85-95%, and the coating has favorable mirror characteristics. The product performance can completely satisfy the demands for packing tableware, medals, prize cups and other metal mirror articles.
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Description

technical field

[0001] The invention relates to a production method of a strap, in particular to a production method of a composite coating strap for metal mirror article packaging. Background technique

[0002] Tableware, medals, trophies and other metal objects have a mirror surface, which has strong reflection characteristics under the light, and presents good optical characteristics, which can leave a deep impression on people. Therefore, when bundling the above-mentioned types of articles, it is required that the corresponding straps have a bright surface, so as to match and improve the grade. Generally speaking, in addition to having low surface roughness and high specular reflectivity, bright straps must also have appropriate mechanical properties and a thinner thickness to prevent damage to the above items due to excessive strength and size. .

[0003] The traditional bright metal coating is mainly Cu-Ni-Cr system, which has two obvious disadvantages: one is that t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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