Device and method for reinforcing metal abrasive

Abstract

The invention discloses a device and a method for reinforcing a metal abrasive, which belong to the field of technical equipment for manufacturing metal abrasives, and particularly relates to a device and a method for reinforcing the metal abrasive, which enhance the surface hardness of steel shots. The device comprises a motor (1), a transmission device, a host machine (4) and a supporting device for supporting the host machine (4) and is characterized in that: the host machine (4) is a hollow cylinder which inclines towards the right lower side; a central shaft (11) is arranged in the center and sleeved with a blade (6); and the upper left end of the host machine (4) is provided with a feeding hole (3), the upper right end of the host machine (4) is provided with a dust collecting port (9) and the lower right end of the host machine (4) is provided with a discharge hole (8). The device has a simple structure and is convenient to install and adjust. The metal abrasive is intensified in the host machine (4) in a rolling way for 2 to 5 minutes. The hardness of austenite stainless steel pills can be enhanced by 2 to 7 HRC and the hardness of non-ferrous metal abrasives such as aluminum pills, zinc pills and the like is enhanced by 5 to 30 HV. Wearing resistance is enhanced remarkably, service life is prolonged and surface cleaning efficiency is improved.

Description

technical field [0001] A metal abrasive strengthening device belongs to the field of metal abrasive manufacturing technical equipment, and in particular relates to a metal abrasive strengthening device for enhancing the surface hardness of steel shots. Background technique [0002] At present, the cast steel shot products used at home and abroad mainly fall into two categories: low-carbon and high-carbon. Due to the high carbon content (0.8-1.2wt.%C), the high-carbon cast steel shot is centrifuged or atomized into pellets and then cooled to room temperature to form a high-carbon sheet-like martensite structure and produce a large number of cracks. And tempering treatment, cracks will still exist, so it is brittle and not resistant to impact. It is easy to break during surface shot blasting, sand blast cleaning and shot peening strengthening, and the loss is large. Low-carbon cast steel shot has low carbon content (less than 0.2wt.%C), high toughness, but low hardness, no we...

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Problems solved by technology

Due to the high carbon content (0.8-1.2wt.%C), the high-carbon cast steel shot is centrifuged or atomized into pellets and then cooled to room temperature to form a high-carbon sheet-like martensite structure and produce a large number of cracks. And tempering treatment, cracks will still exist, so it is brittle and not resistant to impact. It is easy to break during surface shot blasting, sand blast cleaning and shot peening strengthening, and the loss is large.

Low-carbon cast steel shot has low carbon content (less than 0.2wt.%C), high toughness, but low hardness, no wear resistance, and due to high melting point, poor fluidity of molten steel, large shrinkage, resulting in loose steel shot and many hollow defects , although the ERVIN cycle life measured by the 100% substitution method is higher than that of high-carbon steel shots, but due to low hardness, low cleaning efficiency and long cleaning time when cleaning steel parts, the actual consumption of low-carbon steel shots for cleaning the same amount of steel parts did not decrease, sometimes increased

Although the low-carbon steel shot has undergone secondary quenching and low-temperature tempering treatment, its hardness is still low, which cannot meet the requirements for surface shot blasting, shot blasting and strengthening of steel, castings, forgings, and heat-treated parts.

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