A production method of ultra-high strength wear-resistant strapping

Abstract

A production method for a super-strength wear-resistant binding strap comprises the following steps of using 1Cr12WMoV as raw steel; performing cold rolling on the raw steel; performing high-temperature austenitizing on the raw steel after the raw steel is uncoiled, stripped and deburred; performing quenching on the raw steel in NaNO3 aqueous solution; performing NaNO3 salt bath quenching; performing tempering on the steel after the steel is washed by water conventionally; naturally cooling down the steel until the temperature of the steel reaches room temperature; and then coiling the steel. The tensile strength of the binding strap is not lower than 1200 MPa, the elongation is not lower than 8%, and layered brittle failure is avoided, namely the mechanical property is high; and the surface hardness value is not lower than 60 HRC, and the binding strap cannot be changed obviously even if the binding strap is repeatedly ground and wiped 2000 times, namely the wear resistance is high. Owing to the performance of the binding strap, the binding strap can be used for binding and packaging stone articles which are heavy, have complicated geometrical shapes and are high in surface roughness.

Description

technical field [0001] The invention relates to a production method of a strap, in particular to a production method of an ultra-high-strength wear-resistant strap. Background technique [0002] Ultra-high-strength wear-resistant strapping is a high-value-added cold-rolled deep-processing product, which is widely used for bundling and packaging stone objects with heavy weight, complex geometry and high surface roughness. Generally, it should have excellent mechanical properties and wear resistance. [0003] When transporting and storing stone materials used to prepare stoneware, jadeware and pottery, due to their heavy weight, complex geometry and high surface roughness, the corresponding straps are required to have good mechanical properties and wear resistance to prevent them from being damaged due to strong The friction and impact of the belt will cause the belt to break, resulting in damage to the raw material or causing a safety accident. [0004] At present, the comm...

AI Technical Summary

Problems solved by technology

This method is relatively simple, but it also has very obvious disadvantages: first, the process flow is relatively long, and it often needs to be assisted by additional coating, electroplating, hot-dip, and spraying equipment, and the production cost is high; The physical and chemical properties of the substrates are inconsistent. After a long period of high-intensity impact and wear, the bonding force becomes poor, and aging, cracking, and falling off are prone to occur, which seriously affects the service life of the strapping; the third is the coating or coating. The thickness is often relatively large, generally up to 50-100 µm. After the strapping enters the automatic strapping machine, the phenomenon of tape jamming often occurs, which greatly reduces production efficiency.

However, this process also has a disadvantage: the cooling ability of the molten nitrate is weak, it takes a long time to cool to the required temperature and the corresponding structural transformation occurs, and it is easy to make the steel with low stability of supercooled austenite pearlite formed during cooling

However, this process also has a disadvantage: the cooling ability of the molten nitrate is weak, it takes a long time to cool to the required temperature and the corresponding structural transformation occurs, and it is easy to make the steel with low stability of supercooled austenite pearlite formed during cooling

In addition, due to the long cooling time, production often needs to be carried out at a slow speed, which will lead to low work efficiency and increased production costs

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