Preparation method for high-performance steel shots

Abstract

The invention discloses a preparation method for high-performance steel shots. The preparation method comprises the following steps: (1) sorting waste steel wire ropes according to a filament diameter, and obtaining the waste steel wire ropes with the same filament diameter; (2) detaching the waste steel wire ropes which are obtained by sorting and have the same diameter into steel wires by using a wire detaching machine; (3) feeding the detached steel wires into a hydrogen annealing furnace for annealing; (4) straightening the annealed steel wires, and performing cold-drawing processing on the straightened steel wires; (5) cutting the steel wires which are subjected to the cold-drawing into cylinders of which the lengths are equal to the diameters of the steel wires which are subjected to the cold-drawing; (6) performing polishing treatment on the surfaces of the cylinders obtained by cutting, screening to obtain high-performance steel shots, and packaging and warehousing the high-performance steel shots. The high-performance steel shots prepared by the preparation method has the advantages of high mechanical properties, long service life and low cost because of the waste steel ropes serving as a raw material; the high added value of the waste steel wire ropes, and the energy conservation and environment friendliness are realized.

Description

technical field [0001] The invention belongs to the technical field of metal abrasives, in particular to a method for preparing high-performance steel shots. Background technique [0002] Cast steel shot is mainly divided into high carbon cast steel shot and low carbon cast steel shot. Due to the many deformed shots formed by low-carbon cast steel shots and cannot be broken into steel sand, they can only be waste products, and the raw materials are strictly required during production, the cost is nearly 20% higher than that of high-carbon cast steel shots, and the service life is only higher than that of high-carbon cast steel shots. Steel shot 30%, compared with high-carbon cast steel shot, there is no obvious cost-effective advantage, and it has not been widely used at home and abroad. Therefore, high-carbon cast steel shot is still mainly used now. According to GB / T18838.3-2008 high carbon cast steel shot and sand, SFSA20-66 cast steel abrasive, SAE J827-1996 cast steel ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the particle size distribution is difficult to control, the energy consumption of smelting, quenching, tempering and other processes is high, the metallographic structure is tempered martensite, the Owen life is 2000-3000 times, there is pollution in the production process, and the steel shot produced Defects such as hollows, cracks, and deformities affect the service life. It is easy to break during shot peening and has a large amount of loss. It wastes resources and generates dust, resulting in a very harsh working environment for the operator.

[0004] A large number of waste steel wire ropes are eliminated every year in industrial and mining enterprises, oil fields, ports and other industries. The annual production of waste steel wire ropes in China is more than 2 million tons. Improper storage of waste steel wire ropes is easy to corrode, which reduces the utilization rate, pollutes the environment and takes up space. At present, waste steel wire ropes Can only be used for simple processing and utilization, low added value and not environmentally friendly