Baoshan Iron & Steel Co., Ltd.

Xiujun Li

Hongxing Chen

Gang Xu

Gaofei Liang

Long Xie

Zhangwei Wang

Bijun Ban

Hua Ni

Fuliang Lian

Shunli Zhao

Shoumin Wu

A blended polyester laminating film resistant to discoloration caused by cooking, comprising polyethylene terephthalate and polybutylene terephthalate. The blended polyester laminating film comprises three layers, i.e., upper, middle, and lower layers. One surface layer contains SiOin a mass fraction of 1200-2000 ppm added by in-situ polymerization. The blended polyester laminating film is manufactured by a three-layer coextrusion biaxial stretching method, and the manufacturing method is 240-275° C. A film-laminated metal sheet manufactured from the blended polyester laminating film has excellent resistance to discoloration caused by cooking, and is applied to metal containers for food and beverage packaging that require high-temperature sterilization.

Laminating film resistant to discoloration caused by cooking, and film-laminated metal sheet

Disclosed are a high-strength multiphase steel tinned raw plate and a manufacturing method therefor, wherein the mass percentages of the components of the multiphase steel tinned raw plate are: 0.081%-0.14% of C, 0.2%-0.8% of Mn, 0.01%-0.09% of Al, 0.01%-0.03% of P, 0.002%-0.015% of N, also containing one or more than one of 0.001%-0.005% of B, 0.005%-0.05% of Cr, 0.001%-0.1% of Ti, 0.001%-0.2% of Nb, 0.005%-0.03% of Cu, 0.001%-0.008% of Mo, and the balance of Fe and other inevitable impurities; and satisfy: 0.21%≤Mn+1.3 Cr+3.2 Mo+0.5 Cu≤0.91%. The tinned raw plate has a structure comprising ferrite grains, pearlite, martensite and cementite particles, wherein the total volume fraction of the pearlite, martensite and cementite particles is 5%-20%, the volume fraction of the martensite is 1%-5%, and the martensite has a solid solution content of carbon of ≥0.07%. The tinned raw plate has a high strength and better elongation, and can be used to produce a can body, a can bottom, an easy-open end and a twist-off cap, etc. of a three-piece can which has higher requirements for strength and elongation.

High-strength multiphase tinned steel raw plate and manufacturing method therefor

The present invention discloses a double cold reduction strip for shadow mask and a process for producing the same, comprising the following procedures: converter steelmaking&#x2192;continuous billet casting&#x2192;hot rolling&#x2192;pickling and cold rolling&#x2192;continuous annealing&#x2192;double cold reduction&#x2192;finishing and oiling. The weight percentages of essential elements of the shadow mask strip are: C: &#x2266;0.001%, Mn: 0.10&#x2dc;0.40%, Al: 0.02&#x2dc;0.06%, Si: &#x2266;0.025%, P: &#x2266;0.015%, S: &#x2266;0.01%, O: &#x2266;0.004%, with remainders composed of Fe and inevitable impurities. Through the composition design for the elements in steel material according to the present invention, on the one hand, the weight percentage of carbon is controlled at a low level; on the other hand, the middle decarburization annealing process is omitted, the annealing temperature is declined, the production period is shortened and the production cost is reduced; through the optimization for rolling parameters and roller processing in the double cold reduction, procedures for degreasing and finishing are removed, and steels with excellent mechanical property and high surface quality are obtained.

Double cold reduction strip for shadow mask and process for producing the same

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Shanghai, China

Xiujun Li