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Anticorrosion processing method for rudder pintle bearing

An anti-corrosion treatment and bearing technology, which is applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of poor anti-corrosion performance of rudder pin bearings, achieve high anti-corrosion ability, excellent chemical corrosion resistance, and improve adhesion.

Inactive Publication Date: 2015-09-16
GUANGXI WUZHOU YUNLONG PORT & SHIP MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-corrosion treatment method for rudder pin bearings, which can solve the problem of poor anti-corrosion performance of existing rudder pin bearings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The anti-corrosion treatment method of the rudder pin bearing of the present embodiment comprises the following steps:

[0016] A. Degrease the rudder pin bearing with organic solvent, then carry out high pressure washing and drying;

[0017] B. Carry out sandblasting treatment, so that the surface cleanliness of the rudder pin bearing reaches Sa3 level, and the surface roughness reaches 10um;

[0018] C. 15 minutes after the completion of step B, dip-coating titanium nano-polymer alloy coating, the dip-coating viscosity is (coating-4 cups) for 20s, after flashing for 25 minutes, it is dried in a furnace, and the drying temperature is 250°C, The time is 30 minutes, and the dry film thickness of the coating is 105um;

[0019] D. After drying, spray an epoxy anti-corrosion nano-coating, dry at room temperature for 12 hours, and the dry film thickness of the coating is 80um;

[0020] E. Then spray two siloxane-modified acrylic polyurethane coatings with an interval of 0....

Embodiment 2

[0022] The anti-corrosion treatment method of the rudder pin bearing of the present embodiment comprises the following steps:

[0023] A. Degrease the rudder pin bearing with organic solvent, then carry out high pressure washing and drying;

[0024] B. Carry out sandblasting treatment, so that the surface cleanliness of the rudder pin bearing reaches Sa3 level, and the surface roughness reaches 25um;

[0025] C. 20 minutes after the completion of step B, dip-coating titanium nano-polymer alloy coating, the dip-coating viscosity is (coating-4 cups) 23s, after flashing for 30 minutes, it is dried in the oven, and the drying temperature is 280 ℃, The time is 25 minutes, and the dry film thickness of the coating is 120um;

[0026] D. After drying, spray an epoxy anti-corrosion nano-coating, dry at room temperature for 24 hours, and the dry film thickness of the coating is 110um;

[0027] E. Then spray two coats of siloxane-modified acrylic polyurethane paint. The interval betwee...

Embodiment 3

[0029] The anti-corrosion treatment method of the rudder pin bearing of the present embodiment comprises the following steps:

[0030] A. Degrease the rudder pin bearing with organic solvent, then carry out high pressure washing and drying;

[0031] B. Carry out sandblasting treatment, so that the surface cleanliness of the rudder pin bearing reaches Sa3 level, and the surface roughness reaches 30um;

[0032] C. 30 minutes after the completion of step B, dip-coating titanium nano-polymer alloy coating, the dip-coating viscosity is (coating-4 cups) for 25s, and after flashing for 25 minutes, it is dried in a furnace, and the drying temperature is 270°C, The time is 20 minutes, and the dry film thickness of the coating is 125um;

[0033] D. After drying, spray an epoxy anti-corrosion nano-coating, dry at room temperature for 18 hours, and the dry film thickness of the coating is 120um;

[0034] E. Then spray two coats of siloxane-modified acrylic polyurethane paint with an int...

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Abstract

The invention discloses an anticorrosion processing method for a rudder pintle bearing, and relates to the manufacturing technology field for matched devices for ships. In the method, oil removing processing of a rudder pintle bearing by utilization of an organic solvent is carried out, then high-pressure flushing and drying are carried out, sand-blast processing is carried out, thus the surface cleanliness of the rudder pintle bearing reaches the Sa3 grade and the surface roughness reaches 10-30micrometers. Dip-coating in a nano-high-molecular alloy paint is carried out within 30min, flash-off for 25-30 min is carried out, then the processed rudder pintle bearing is put into a furnace and dried for 20-30min at a drying temperature of 250-280 DEG C. After drying, spraying of epoxy anticorrosion nano-paint is carried out, air drying is carried out at the room temperature for 12-24h, and the coating dried film thickness is 80-100micrometers. Then spraying of two layers of a siloxane-modified acrylic acid polyurethane paint is carried out, the spraying interval between two layers is less than 1h, each coating dried film thickness is 60-80micrometers, and drying is carried out at the room temperature for 5-7 days after spraying is finished. The anticorrosion processing method solves the problem of poor anticorrosion performance of a present rudder pintle bearing.

Description

technical field [0001] The invention relates to the technical field of marine supporting equipment manufacturing, in particular to a method for anticorrosion treatment of a rudder pin bearing. Background technique [0002] The rudder is an operating mechanism used to control the sailing direction of the ship. It is generally installed at the stern of the ship. It is mainly composed of a rudder blade, a rudder stock, a rudder pin, and a rudder pin bearing. The rudder pin bearing is immersed in seawater for a long time, and the operating environment is very harsh. It will not only be strongly corroded by seawater, but also corroded by marine microorganisms. Corrosion of the rudder pin bearing will affect the steering accuracy of the ship's rudder system. The existing rudder pin bearing has poor anti-corrosion performance and needs to be repaired frequently, which increases the maintenance cost. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to pro...

Claims

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Application Information

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IPC IPC(8): F16C33/00
Inventor 范明昌
Owner GUANGXI WUZHOU YUNLONG PORT & SHIP MACHINERY MFG
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