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Preparation process of bundling strip for packaging

A preparation process and packaging technology, which is applied in the field of preparation process of packaging straps, can solve problems such as unstable mechanical properties, uneven surface color, and easy occurrence of overburning, and achieve good film-forming effect, high efficiency, and avoid The effect of wastewater

Inactive Publication Date: 2014-12-24
WUXI FANGZHENG METAL LIGATURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of high-strength packaging steel strips produced by electric heating furnaces are unstable mechanical properties, uneven surface color, prone to overburning, and low output.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation process for strapping for packaging, the chemical composition of the steel is: C: 0.18%, Si: 0.3%, Mn: 1.5%, P≤0.012%, S≤0.008%, Als: 0.020% , Nb: 0.010%, Cr: 0.50%, and the balance is Fe and unavoidable impurities. The cold-rolled coil of the steel is used as the raw material. The preparation process includes the following steps: decoiling, welding, strip slitting and slitting, Deburring and leveling, surface bluing, cooling, cleaning, surface zinc coating, coating drying, waxing, coiling, the surface bluing step is to use electromagnetic induction coil intermediate frequency heating to carry out surface bluing, and the bluing temperature The temperature is controlled at 360°C, and the holding time is 35 seconds; the mass ratio of original paint and water in the zinc coating step is 1:2.5, the coating temperature is 40°C, and the zinc coating speed on the surface is 16m / min.

Embodiment 2

[0025] A preparation process for strapping for packaging, the chemical composition of the steel is: C: 0.20%, Si: 0.2%, Mn: 1.7%, P≤0.012%, S≤0.008%, Als: 0.010% , Nb: 0.012%, Cr: 0.30%, and the balance is Fe and unavoidable impurities. The cold-rolled coil of the steel is used as the raw material. The preparation process includes the following steps: decoiling, welding, strip slitting and slitting, Deburring and leveling, surface bluing, cooling, cleaning, surface zinc coating, coating drying, waxing, coiling, the surface bluing step is to use electromagnetic induction coil intermediate frequency heating to carry out surface bluing, and the bluing temperature The temperature is controlled at 370°C, and the holding time is 25 seconds; the mass ratio of original paint and water in the zinc coating step is 1:2.5, the coating temperature is 45°C, and the zinc coating speed on the surface is 14m / min.

Embodiment 3

[0027] A preparation process for strapping for packaging, the chemical composition of the steel is: C: 0.19%, Si: 0.25%, Mn: 1.6%, P≤0.012%, S≤0.008%, Als: 0.015% , Nb: 0.011%, Cr: 0.40%, the balance is Fe and unavoidable impurities, and the cold-rolled coil of the steel is used as a raw material. The preparation process includes the following steps: decoiling, welding, strip slitting and slitting, Deburring and leveling, surface bluing, cooling, cleaning, surface zinc coating, coating drying, waxing, coiling, the surface bluing step is to use electromagnetic induction coil intermediate frequency heating to carry out surface bluing, and the bluing temperature The temperature is controlled at 35°C, and the holding time is 30 seconds; the mass ratio of original paint and water in the zinc coating step is 1:2.5, the coating temperature is 42°C, and the zinc coating speed on the surface is 15m / min.

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PUM

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Abstract

The invention discloses a preparation process of a bundling strip for packaging. A cold-rolled steel coil is used as a raw material. The preparation process comprises the following steps of uncoiling, welding, stripping by longitudinally shearing a steel belt, deburring and leveling, surface bluing, cooling, cleaning, surface zinc coating, coating drying, waxing and rolling, wherein the surface bluing step is realized in a way of heating at intermediate frequency by using an electromagnetic induction coil, the bluing temperature is controlled at 360-370 DEG C, and the heat preservation time is controlled within 25-35s; and in the surface zinc coating step, the mass ratio of an original paint to water is 1:2.5, the coating temperature ranges from 40 DEG C to 45 DEG C, and the surface zinc coating speed is controlled at 14-16m / min.

Description

technical field [0001] The invention relates to the technical field of packaging, in particular to a preparation process of a strap for packaging. Background technique [0002] Packaging steel strips are divided into three categories according to their mechanical properties: low-strength steel strips, medium-strength steel strips and high-strength steel strips. Medium and low-strength steel strips are generally made of carbon structural steel. The high-strength steel strip needs to be manufactured with low-alloy steel, alloy structural steel or high-quality carbon structural steel. [0003] Steel belts are usually used as the binding belt, and the items are firmly bundled into a bundle on an automatic or manually operated coil binding machine, stacked on a shelf or placed in a crate for transportation, storage and sales. In some applications, especially those in which strapping bundles of considerable weight, such as a stack of bricks, require the use of steel strapping, th...

Claims

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Application Information

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IPC IPC(8): C22C38/38C21D1/10B65D63/02
CPCY02P10/25
Inventor 宋志方
Owner WUXI FANGZHENG METAL LIGATURE
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