Sand blasting derusting and online heat treatment method for reinforcing steel bar

Abstract

The invention discloses a sand blasting derusting and online heat treatment method for a reinforcing steel bar. Firstly, the reinforcing steel bar is placed on a conveying device, and the reinforcing steel bar is placed in a reinforcing steel bar conveying groove; and sand blasting devices are started, a heat treatment device is then started, and the surface of the reinforcing steel bar is covered with a dense oxide protection layer. The sand blasting derusting and online heat treatment method has the beneficial effects that sand blasting derusting can be conducted on the reinforcing steel bar in all directions, the dense oxide protection layer is formed under the high temperature, and the derusting quality is improved; meanwhile, the internal environment and the external environment can be cleaned, a rack passes through the outer sides of sand blasting compartments, conveying carrier rollers do not enter the sand blasting compartments either, and therefore the rack and the carrier rollers can be prevented from being damaged; the sand blasting devices are increased so that the process length of each sand blasting device is shortened, it can be avoided that the vacancy of the conveying carrier rollers is too long, and the reinforcing steel bar can obtain continuous conveying drive force; after sand blasting is conducted in a hierarchical manner, rough steel sand is recovered and then cleaned and reused, and fine steel sand can be directly recycled; and with the comprehensive effect, the production efficiency can be improved, cost is reduced, and the labor protection measures are enhanced.

Description

technical field [0001] The invention relates to the technical field of rust removal, in particular to a steel bar sand blasting rust removal and online heat treatment method. Background technique [0002] In order to make the metal surface have good cleanliness and roughness, pretreatment such as derusting must be carried out on the surface of the metal structure. The principle of sand blasting rust removal and anti-corrosion construction is to use the pressure generated by the air compressor to make the sand particles gain momentum and spray them on the surface of the steel structural member. The sand particles and the metal surface rub against each other to make the rust attached to the metal surface fall off, and then the anti-corrosion The paint is rolled on the metal surface to form a paint film on the entire metal surface, thereby preventing the erosion of water and air to achieve anti-corrosion effects. [0003] For round steel bars, the existing sandblasting and der...

AI Technical Summary

Problems solved by technology

[0003] For round steel bars, the existing sandblasting and derusting devices can only sandblast the steel bars from the upper and lower directions, and the lateral direction of the steel bar surface cannot be taken care of, resulting in insufficient rust removal

[0004] In addition, the anti-corrosion paint is also easy to wear after rust removal, and repeated rusting occurs.

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