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Rustproof friction increasing method for nut and nut column of ship lift

A nut column and ship lift technology, which is applied to devices for coating liquids on surfaces, pretreated surfaces, special surfaces, etc., can solve problems such as accelerated coating curing, and achieve the effects of easy operation, improved efficiency and convenient application.

Active Publication Date: 2016-10-12
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in actual construction, this time period is unacceptable, so new methods to accelerate coating curing must be explored

Method used

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  • Rustproof friction increasing method for nut and nut column of ship lift
  • Rustproof friction increasing method for nut and nut column of ship lift
  • Rustproof friction increasing method for nut and nut column of ship lift

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Use a brush to evenly paint the friction-increasing grease on the surface of the sample to be tested, and the coating thickness is 30-50 μm;

[0042] 2. Place the test block obtained in step 1 under ultraviolet light to accelerate the curing of the coating. The power of the ultraviolet lamp is 300W, the bulb is placed directly on the test surface of the test block, so that the ultraviolet rays are directly irradiated with the protective material coating, the distance between the bulb and the sample is 15cm, the temperature is controlled at 80°C, and the irradiation time of the ultraviolet lamp is 12h;

[0043] 3. Test the friction coefficient of the test block obtained in step 2 under a digital display (static) friction testing machine;

Embodiment 2

[0045] 1. Use a brush to evenly paint the friction-increasing grease on the surface of the test block to be tested, and the thickness of the coating is 30-50 μm;

[0046]2. Place the test block obtained in step 1 under ultraviolet light to accelerate the curing of the coating. The power of the ultraviolet lamp is 300W, the bulb is placed directly on the test surface of the test block, so that the ultraviolet light is directly irradiated with the protective material coating, the distance between the bulb and the sample is 15cm, the temperature is controlled at 80°C, and the irradiation time of the ultraviolet lamp is 24h;

[0047] 3. Test the friction coefficient of the test block obtained in step 2 under a digital display (static) friction testing machine;

Embodiment 3

[0049] 1. Apply lubricating oil evenly on the surface of the test block to be tested with a brush, and the thickness of the coating is 50-70 μm;

[0050] 2. Place the test block obtained in step 1 under ultraviolet light to accelerate the curing of the coating. The power of the ultraviolet lamp is 300W, the bulb is placed directly on the test surface of the test block, so that the ultraviolet light is directly irradiated with the protective material coating, the distance between the bulb and the sample is 15cm, the temperature is controlled at 80°C, and the irradiation time of the ultraviolet lamp is 12h;

[0051] 3. Test the friction coefficient of the test block obtained in step 2 under a digital display (static) friction testing machine;

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Abstract

The invention discloses a rustproof friction increasing method for a nut and a nut column of a ship lift. Firstly, a nut or nut column sample required to be subject to rust prevention is coated with a friction increasing grease protection material coating with the thickness ranging from 30 micrometers to 70 micrometers, then, an ultraviolet lamp is used for irradiating the friction increasing protection material coating on the surface of the sample, the irradiating time reaches 12 hours to 24 hours, and the requirement that the surface friction coefficient of the sample is larger than 0.1 while the nut or nut column is subject to rust prevention is met; the distance between the ultraviolet lamp and the sample ranges from 15 cm to 20 cm; when the ultraviolet lamp is used for irradiating the sample, the temperature of the sample is controlled to range from 60 DEG C to 80 DEG C; and the power of the ultraviolet lamp ranges from 200 W to 400 W. According to the scheme, the method has the beneficial effects of being simple in process, rapid, efficient, reliable in performance and the like.

Description

technical field [0001] The invention belongs to the technical field of rust prevention and friction increase, in particular to a rust prevention and friction increase method for ship lift nuts and nut posts. Background technique [0002] The ship lift guarantees the safety of the ship lift through the self-locking of the safety mechanism nut and the friction surface of the nut column. The self-locking condition of the safety mechanism is: the friction angle of the thread pair friction surface must be greater than the helix angle (γ=5.64°) , that is, the equivalent friction coefficient f v > arctan γ = 0.1. Under the working conditions of the ship lift, the nuts and nut columns of the safety mechanism are in the open air, which is prone to corrosion, which makes the safety mechanism damaged and cannot work normally. Therefore, it must be properly rust-proofed. [0003] In production practice, in order to prevent corrosion when the safety mechanism of the ship lift leaves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D5/02B05D3/06
CPCB05D3/067B05D5/00B05D5/02B05D2202/00
Inventor 肖文凯翟显石端伟范桃桃徐宇翔代梦娇龚卓
Owner WUHAN UNIV