JPS61204365A - Improvement of properties of brush roll shaft, backup roll or the like of brush roll machine - Google Patents

Abstract

PURPOSE:To provide easily wear resistance and corrosion resistance to materials to be treated such as brush roll shaft of a brush roll machine made of an ordinary steel by blasting the surface of said materials to be treated then irradiating a wear-resistant inorg. material thereto and painting a corrosion-resistant paint thereon. CONSTITUTION:The surface of the above-mentioned materials to be treated such as brush roll shaft and backup roll is blasted by a proper blasting material such as SiC. The corrosion- and wear-resistant ceramics (e.g.; Al2O3, TiO2, etc.), metal (e.g.; NiCr, Co, etc.), cermet, etc., are then irradiated to the blasted materials to form a thermally sprayed layer thereon. The corrosion-resistant resin paint (e.g.; a phenolic resin of a thermally spraying type) is coated on the thermally sprayed layer by coating or spraying method to seal the pinholes of the thermally sprayed layer. The properties of the above-mentioned brush roll shaft, etc., are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for improving the physical properties of a brush roll shaft, a backup roll, etc. of a brush roll machine for brushing a material to be treated such as a metal strip.

The brush roll shaft and backup roll in a brush roll machine that performs such brushing are required to have wear resistance against wear caused by the brush roll, and in brushing such as pickling treatment or washing off the pickling solution with warm water, this is required. Corrosion resistance against liquids is also required.

i Hyowatan I Conventionally, in order to impart wear and corrosion resistance to the brush roll shaft and backup roll of brush roll machines used for this type of brushing process, they were coated with hard chrome plating or high It relies on being made of corrosion-resistant stainless steel. According to this, there is a problem that the cost is considerably high, and in the case of a brush roll shaft, it is difficult to process because it tends to bend during processing and even over time.

Therefore, the present invention eliminates the drawbacks of the above-mentioned prior art, makes the brush roll shaft, backup roll, etc. of the brush roll machine from ordinary steel, and achieves the required wear resistance and corrosion resistance industrially. The aim is to ensure that it is provided in a concise manner.

Means for Solving the Problem A method for improving the physical properties of a brush roll shaft, backup roll, etc. of a brush roll machine of the present invention to achieve the above object is a method of improving the physical properties of a brush roll shaft, backup roll, etc. of a brush roll machine made of common steel. After blasting the surface of a workpiece such as a roll, a corrosion-resistant and wear-resistant or at least wear-resistant ceramic, metal, cermet, etc. is thermally sprayed onto the surface, and then a corrosion-resistant resin is coated on top of that. .

According to the present invention, abrasion-resistant and corrosion-resistant, or at least abrasion-resistant ceramic, metal, cermet, etc., is thermally sprayed on the surfaces of the objects to be processed, such as the brush roll shaft and backup roll made of ordinary steel of the brush roll machine. This imparts wear resistance and corrosion resistance, or at least wear resistance, to the objects to be treated, such as the brush roll shaft and backup roll.

In the present invention, prior to this thermal spraying, the surfaces of the objects to be treated, such as brush roll shafts and backup rolls, are blasted, resulting in countless unevenness with no directionality, and the shape of the unevenness is due to the blasting. The surface area of the workpiece increases several tens of times compared to before processing, and the adhesion of the sprayed materials such as ceramics, metals, and cermets becomes extremely effective, and a sprayed layer made of the sprayed materials with excellent peel strength can be obtained. It will be done. Moreover, since the radiation layer is coated with a corrosion-resistant resin, pinholes are sealed.

11th eye and circle! As described above, according to the present invention, ceramic as a material imparting wear resistance, corrosion resistance, or wear resistance to the surface of the workpiece,
Metals, cermets, etc. can be thermally sprayed as a thermal spray layer with excellent peel strength, and pinholes in the thermal spray layer are sealed with a coating of corrosion-resistant resin. It is possible to use materials with poor corrosion resistance against liquids and hot water used to wash them away, and in this way, brush roll shafts, backup rolls, etc. of brush roll machines can be made of ordinary steel and have the required wear and corrosion resistance. It has now become possible to provide this easily and industrially.

Friend-1-1 Next, the present invention will be explained in detail.

Example 1 Materials to be treated such as the brush roll shaft and backup roll of a brush roll machine are made of ordinary steel, and the surface of these is coated with Si.
Shot blasting is carried out using a suitable blasting material such as C or AQ203 shot, and then the treated material is coated with a corrosion-resistant and wear-resistant ceramic (for example, ItAQ20s, TlO
Plasma spraying, arc spraying, thermospray spraying, After thermal spraying is performed using a metallizing thermal spraying method or the like to form a thermal spray layer using the thermal spray material, a corrosion-resistant resin paint, such as a solvent-type phenolic resin or epoxy resin, is applied or sprayed over the thermal spray layer. , thereby sealing pinholes in the sprayed layer. If this coating is performed under reduced pressure, the pinholes in the sprayed layer will be well filled with the corrosion-resistant resin paint, and the holes will be effectively sealed.

After the hole sealing process has been completed, the processed product is finished by cutting or grinding.

Example 2 A material to be treated similar to that in Example 1 was subjected to shot blasting with Fe Grirad, and then a wear-resistant cermet selected from wear-resistant cermets (for example, NiCr+WC, Go+WC, etc.) was treated in the same manner as in Example 1. A sprayed layer is formed by thermal spraying, and then the sprayed layer is sealed in the same manner as in Example 1, and then finished in the same manner as in Example 1.

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Claims (1)

[Claims] (1) After blasting the surface of the workpiece made of ordinary steel, such as the brush roll shaft of a brush roll machine, backup roll, etc., it is coated with abrasion- and corrosion-resistant, or at least abrasion-resistant ceramic, metal, or cermet. A brush roll shaft of a brush roll machine, which is characterized by thermal spraying and then coating with a corrosion-resistant resin.
Method for improving physical properties of backup rolls, etc.