Sampling device for residual dirt on surface of strip steel

Abstract

The invention discloses a sampling device for residual dirt on the surface of strip steel. When the sampling device is used, sampling test paper is attached to the rear side face of a cylinder, and a sampler holds a vertical rod by hand and enables the sampling test paper fixed to the rear side of the cylinder to wipe and sample the surface of the strip steel, so the situation that the hands of the sampler are cut by surface defects of the strip steel is effectively avoided; the cylinder plays a role in supporting the sampling test paper, so the stress uniformity of the contact part of the sampling test paper and the surface of the strip steel during wiping and sampling is improved, and the objective authenticity of residual dirt adhered to the sampling test paper is ensured; and after single sampling is finished, a cover body is opened, the sampling test paper is detached and placed in a cylindrical accommodating groove, and then the cover body is re-mounted on the accommodating groove, so the sampling operation of next sampling test paper can be carried out, the temporary storage convenience of the sampling test paper after sampling is improved, and the overall sampling efficiency of residual dirt on the surface of the strip steel is improved.

Description

technical field [0001] The invention relates to the technical field of strip steel processing and detection equipment, in particular to a sampling device for residual dirt on the surface of strip steel. Background technique [0002] After the hot-rolled steel plate is pickled and cold-rolled, it is made into a cold-rolled steel strip with a thickness of about 0.2-2.0 mm. During the cold-rolling process, it is necessary to spray rolling oil (emulsion) on the surface of the steel plate to lubricate and cool, and to achieve short-term anti-rust. [0003] Before the subsequent heat treatment (annealing) of the cold-rolled strip, the grease and iron powder remaining on the surface of the strip during the cold-rolling process must be cleaned with a degreasing agent. In this way, the cold-rolled steel strip must be treated with alkali washing and degreasing before annealing, generally using an alkaline degreasing agent for cleaning and degreasing. At present, alkali washing and d...

AI Technical Summary

Problems solved by technology

[0004] However, at present, most of the sampling methods for residual dirt on the surface of strip steel are manual sampling, that is, the sampling personnel directly hold the sampling test paper to wipe the surface of the strip steel

Since there may be defects such as fine burrs, bulges, inclusions, and holes on the surface of the strip steel, manual sampling may easily cause the surface defects (burrs, bulges, etc.) of the strip steel to scratch the sampling test paper, and even cause cuts to the hands of the sampling personnel; sampling personnel In the process of sampling residual dirt on the surface of the strip, it is difficult to control the uniformity of the wiping force of the sampling test paper on the surface of the strip, which in turn affects the amount of residual oil and iron adhered to the sampling test paper; Inconvenient storage after surface sampling

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