Manufacturing method for high strength bailing band

Abstract

The invention belongs to iron and steel field and relates to steel packing belt production technique. The technics steps includes unrolling, squaring head, butt-welding, entrance looping, flatting edge, heat treatment, blueing, leach drying, exit looping, paraffin coating and rolling. Above processes is done continuously on one production line which contains 1 to 10 production line unit namely producing 1 to 10 high intensity steel packing belts on the same production line. Heat treatment includes quenching and tempering which quenching with water and water cooling after tempering. Quenching heat the belt in quenching furnace with high frequency sensing heating at 800 to 960 deg. C and tempering heat the belt in tempering furnace with middle frequency sensing heaing at 450 to 650 deg. C. The invention is of high production efficiency, small area, low investment and nonpolluting.

Description

technical field [0001] The invention belongs to the field of iron and steel, and relates to a production method of a packing steel strip. Background technique [0002] Packing steel strips have been widely used in the packaging and bundling of non-metallic materials such as steel, non-ferrous metals, building materials, glass, paper rolls (boards), and light textile products. With the requirements of the development of science and technology, the weight and volume of the individual packaged bundles tend to be larger, requiring that the packaged steel belt not only have high strength, but also have good plasticity, toughness and corrosion resistance, so that the bundled The product cannot be unrolled during transportation, even during strong handling, hoisting and beating. Usually, the packing steel strip is made of cold-rolled steel strip with a thickness of 0.25-1.0 mm, and enters the production process of the packing steel strip. [0003] In the prior art, the production...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing packing steel strip production line, although its comprehensive performance of the packing steel strip produced can meet the requirements of use, there are still the following defects: ① adopt two production lines, the investment is large, and the floor area is large

② Due to the use of two production lines and the use of lead bath or lead-bismuth bath as the quenching and tempering medium, the speed of steel strip routing is slow, the production speed is slow, the process is cumbersome, and the production efficiency is low

③The lead bath or lead-bismuth bath treatment used will produce lead pollution, which will have a harmful impact on the health of workers and the environment

The main disadvantage of this method is that the strength is limited, the tensile strength is limited to below 800Mpa, the elongation is about 3%, and the scope of use is limited.

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