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.
Inactive Publication Date: 2017-03-22
武汉钢铁有限公司
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The traditional bright metal coating is mainly Cu-Ni-Cr system, which has two obvious disadvantages: one is that the outermost end is a Cr layer, which is a high-hardness coating, which is easy to damage the surface of the bundled articles; Cu is the substrate, which is prone to oxidation, resulting in a decrease in the stability of the coating
The product is placed in an acidic atmosphere for 540 days without obvious corrosion, that is, the corrosion resistance is good. However, after the Al layer outside the coating is exposed to the air for a long time, it is easy to form Al on the surface. 2 o 3 Passivation film, although the corrosion resistance of the coating is improved, but the specular reflectance of the coating is gradually reduced, and the optical performance is deteriorated
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] The present invention is described in detail below:
[0035] Table 1 is the cold rolling of each embodiment of the present invention and comparative example and the strip making process parameter list (bright white strap);
[0036] Table 2 is the cold rolling of each embodiment of the present invention and comparative examples and the strip making process parameter list (bright black strap);
[0037] Table 3 is the product performance list (bright white strap) corresponding to each embodiment of table 1 and comparative examples of the present invention;
[0038] Table 4 is a product performance list (bright black strap) of the present invention corresponding to each embodiment and comparative example in Table 2.
[0039] The embodiment of the present invention is produced according to the following steps:
[0040] 1) Perform cold rolling:
[0041] A. The conventional Q420 hot-rolled pickled coil is used as the raw material billet, and the thickness of the steel plate...
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
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
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.
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
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/02C23C2/06C25D3/56C23C2/40C23C28/00
Inventor 黄菲陶军晖张兆丽何振华吴远东
Owner 武汉钢铁有限公司