Large-load running rail dry-film lubricant

A technology of dry film lubricant and driving guide rail, which is applied in the direction of lubricating composition, petroleum industry, base material, etc. It can solve the problems of large temperature influence, small load capacity, and difficult high temperature curing, etc., and achieve strong solubility and extreme pressure performance Good, good stability effect

Inactive Publication Date: 2009-11-25
麻城天安化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the wheel pressure, it can form a lot of pressure, causing the oil wedge effect, making the crack expand, and accelerating the destruction of the guide rail; moreover, the grease is easy to fall, which not only pollutes the environment, but if it falls on the steel plate, black spots will appear and affect the guide rail. The quality of the steel plate; if it falls into the cooling water or emulsion used in the hot rolling process, it will increase the difficulty of cooling water and emulsion treatment
[0004] Chinese patents CN97125641, CN00104432 and CN03140835 disclose dry film lubricants, which use a bonding component of moisture-curable polyurethane (PU), which can be solidified and formed into a film only when the humidity is greater than 65%. Restrictions, the solvents used are flammable and explosive solvents (such as acetone, xylene, cyclohexanone, etc.), which bring safety problems to construction and transportation
[0005] Chinese patent CN95103904 announces the normal temperature curing antirust dry film lubricant, and its used adhesive composition is polyamide-imide resin (PAI), although he

Method used

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  • Large-load running rail dry-film lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1: Preparation of RHM dry film lubricant

[0063] 1. Recipe (parts by weight): 30 parts of modified resin (glass transition temperature Tg is 75°C); 2.5 parts of epoxy-type silane coupling agent; nano-Al 2 o 3 (modified) 2.0 parts; solid lubricant: graphite 48 parts, MOS 2 12 parts; Thixotropic anti-settling agent (polyamide wax) 1.2 parts; Antimony trioxide (Sb 2 o 3 )1.8 parts; L a f 3 1.5 parts; 1.0 parts of antioxidant (264); 1.5 parts of extreme pressure antiwear agent (composite borate T361B); 400 parts of RHM special solvent.

[0064] 2. Process operation steps:

[0065] 1) Add 2 / 3RHM special solvent to the dissolution and dispersion kettle, add modified resin and thixotropic anti-sedimentation agent, and let it stand for swelling at room temperature for 3-5 hours. Stir to dissolve for 3 to 4 hours and become a transparent liquid.

[0066] 2) Add Al 2 o 3 , Sb 2 o 3 、LaF 3 , 264, T361B, add 1 / 3 of RHM special solvent after high-speed dispe...

Embodiment 2-9

[0069] Embodiment 2-9: Preparation of RHM dry film lubricant

[0070] 1. Formula (parts by weight): its formula composition is shown in Table 3.

[0071] Modified resin (Tg): 70°C in Example 2-4, 65°C in Example 5-7, and 75°C in Example 8-9.

[0072] 2. Process operation steps: with embodiment 1.

Embodiment 10

[0073] Embodiment 10: Nano-Al 2 o 3 preparation of

[0074] 1. Formula (parts by weight): 30 parts of aluminum nitrate; 70 parts of 25% ammonia water; 7.5 parts of polyethylene glycol.

[0075] 2. Process operation steps: make 30 parts of aluminum nitrate into an aqueous solution with a concentration of 10%, add polyethylene glycol according to the proportion, stir until it is completely dissolved, then add ammonia water dropwise under high-speed stirring until the pH value is 5.2, and continue stirring for 1 Hours, centrifugal filtration, dehydration of the filter cake with n-butanol reflux for 2 hours, removal of butanol, and calcining in a muffle furnace at 1100°C for 4.5 hours.

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PUM

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Abstract

The invention discloses a large-load running rail dry-film lubricant, belonging to the single-constituent room-temperature solidification type dry-film lubricant, comprising the following constituents by weight parts: modified thermal plastic acrylic ester copolymer 30-40 parts, coupling agent 2-6 parts, nano Al2O3 0.5-4 parts, solid lubricant 55-70 parts, solvent 350-500 parts, additive 6-8 parts. The dry-film lubricant has features of good anti-friction and abrasion proofness; good extreme pressure property; no corrosion; safe use, construction and convey; accordance with environmental protection requirement; lower cost and wide application.

Description

technical field [0001] The invention relates to a lubricant, mainly a dry-film lubricant for a heavy-duty driving guide rail in a steel plant. Background technique [0002] The driving crane in the iron and steel plant is responsible for heavy lifting tasks. The working characteristics of the crane’s lifting rail and the wheels on it: ①Large load, such as the weight of a single roll of a cold and hot rolling mill in a steel rolling plant is as high as more than 50 tons. To ensure product quality, the roll It often needs to be lifted for maintenance or replacement; ②starting and braking are frequent; ③working conditions are harsh (some work in the open air). Therefore, the crane guide rail should be lubricated regularly according to the design requirements in use to reduce wear and prolong service life. [0003] In the past, grease lubrication was often used. Due to the small bearing capacity of the oil film (generally not greater than 1100N), the oil film is easy to be sque...

Claims

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Application Information

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IPC IPC(8): C10M111/04C10M107/28C10M107/42C10M103/00
Inventor 胡砚韬赵继舒
Owner 麻城天安化工股份有限公司
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