CN100386530C - Protective method for wear resistance and anti-cavitation corrosion of metal surface - Google Patents

Abstract

The present invention relates to an anti-abrasion and anti-cavitation protection method for local metal surfaces which can be abraded and cavitated easily in impeller machines, such as fans, water pumps, etc. The method comprises the steps: 1. grid glass cloth with certain thickness is reserved and is pressed in polymer materials by a hot pressing method, a strengthened polymer material overlaid thin layer with the functions of abrasion resistance and cavitation resistance is formed at one side, and grid glass cloth with certain thickness is exposed at the other side; 2, a metal surface required for corrosion prevention is coarsened and is cleaned by acetone; 3, the grid glass cloth exposed at one side of the overlaid thin layer is attached to the metal surface of an impeller machine required for protection with epoxy resin. Because of the adoption of the strengthened polymer material overlaid thin layer and the smooth surface, the impeller machine has the characteristics of abrasion resistance and cavitation resistance, and the grid glass cloth exposed outside the polymer material layer is firmly attached to the metal protection required for protection with epoxy resin. Thereby, the method performs the functions of abrasion resistance and cavitation resistance to the local metal surfaces of impeller machines. The method can also be used for protecting the metal surfaces of tanks, slots, etc. containing corrosive mediums.

Description

Protective method for wear resistance and anti-cavitation corrosion of metal surface

technical field

The invention relates to a wear-resistant and anti-cavitation protection method for protecting the local metal surfaces that are easy to wear in impeller machinery such as fans and water pumps.

Background technique

In the local metal surfaces of impeller machinery such as fans and water pumps, the wear and cavitation are particularly serious, so that the entire equipment is scrapped, which greatly affects the safe and economical operation of pumps and fans. Therefore, it is particularly important to strengthen anti-cavitation and anti-wear protection for rotating machinery such as pumps and fans. However, no special protective measures have been taken for these surfaces for many years. The paint has a certain anti-wear effect, and the company's 1341 paint has an effect against slight cavitation. But failed to solve the problem fundamentally.

Contents of the invention

The purpose of the present invention is to solve the problems of local surface wear and cavitation in impeller machinery such as fans and water pumps, and provide a protection method for wear resistance and anti-cavitation.

Technical scheme of the present invention is: method comprises the following steps:

1) Press a certain thickness of grid glass cloth into the polymer material by hot pressing, and combine it with the polymer material, and form a wear-resistant and cavitation-resistant layer on one side of the polymer material layer reinforced by the grid glass cloth. Reinforce the thin layer of polymer material veneer, and the other side is exposed to a certain thickness of grid glass cloth;

2) Brush the metal surface to be anti-corrosion and scrub it with acetone;

3) The grid glass cloth exposed on the side of the polymer material is pasted on the metal surface of the impeller machine to be protected by epoxy resin.

Because the grid glass cloth and the polymer material are bonded together by hot pressing, a thin layer of wear-resistant and anti-cavitation enhanced polymer material veneer is formed. The surface is smooth and has wear-resistant and cavitation-resistant properties. Features, the mesh glass cloth exposed outside the polymer material layer is bonded to the metal surface to be protected with epoxy resin, and they are very firmly bonded, so this method can protect the local metal surface of the impeller machinery Good and reliable protection against cavitation and wear. This method can also be used for anticorrosion of metal surfaces such as tanks and tanks that store corrosive media.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the wear-resistant and cavitation-resistant protective layer;

Figure 2 is a schematic diagram of sticking the wear-resistant and cavitation-resistant protective layer.

Detailed ways

This method is described in conjunction with accompanying drawing: method comprises the following steps:

1) As shown in Figure 1, the glass cloth (1) of a certain thickness is pressed into the polymer material (2) by hot pressing, and combined with the polymer material, the high-density glass cloth reinforced by the grid glass cloth One side of the molecular material layer forms a thin layer of wear-resistant and cavitation-resistant reinforced polymer material veneer, and the other side is exposed to a 0.1-0.8mm thick grid glass cloth. The polymer material can be ultra-high molecular weight polyethylene UHMW-PE, mesh Grid glass cloth is glass fiber;

2) Brush the metal surface to be anti-corrosion and scrub it with acetone;

3) As shown in Figure 2, use the grid glass cloth (1) exposed on the side of the polymer material to be pasted on the metal surface (4) to be protected through epoxy resin (3).

Claims (3)

1. the protecting method of turbomachine concentrated wear and cavitation is characterized in that method may further comprise the steps:

1) certain thickness grid glass cloth (1), be pressed in the macromolecular material (2) with hot-press method, combine with macromolecular material, polymer material layer one side after grid glass cloth strengthens forms wear-resisting anti-cavitation and strengthens macromolecular material veneer thin layer, and opposite side has the certain thickness grid glass cloth for revealing;

2) to need corrosion-resistant metal surface hacking, use the acetone scrub;

3) paste on the metal surface (4) that needs protection by epoxy resin (3) with the grid glass cloth (1) that is exposed to macromolecular material one side.

2. the protecting method of a kind of turbomachine concentrated wear according to claim 1 and cavitation is characterized in that, the described thickness that is exposed at the outer grid glass cloth of macromolecular material is 0.1-0.8mm.

3. the protecting method of a kind of turbomachine concentrated wear according to claim 1 and cavitation, it is levied and is, and described macromolecular material is ultra-high molecular weight polyethylene UHMW-PE.

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