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Heat-coating elevator steel wire rope grease and preparation method thereof

A steel wire rope grease, coating technology, applied in the field of grease, can solve the problems of poor film formation, poor metal adhesion, protection and auxiliary braking, etc., to achieve the effect of improving friction coefficient, strong metal adhesion, and improving safety factor

Active Publication Date: 2016-07-06
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the general-purpose steel wire rope grease products on the market have three problems: first, the friction coefficient does not meet the requirements, second, the metal adhesion is poor, and third, there are volatile solvents in the composition, which is not safe
[0004] At present, the prior art about elevator steel wire rope grease has defects in various aspects of its composition: in terms of base oil, it is mainly a mixture of extracted oil, residual essential oil and residual wax paste, and the index of base oil mainly emphasizes kinematic viscosity. Its components and content are stipulated, and with the deepening of crude oil processing, the output of this type of base oil is less and less; in terms of thickeners, polyethylene, polypropylene and their derivatives are mainly used. The molecular weight of the similar thickener is quite different from the average molecular weight of the base oil, which leads to uneven phenomenon in the steel wire rope grease system at room temperature, which makes the film-forming property of the rope grease on the surface of the steel wire rope poor, and does not have the proper protective effect on the steel wire rope. ; In terms of friction agent, the friction coefficient of the current product is difficult to meet the requirements of 0.25, and the quality is not stable in improving the surface friction coefficient of the elevator wire rope, and cannot play the due protection and auxiliary braking effect; in addition, Most of the components of rope grease products contain volatile solvents, which not only have great hidden dangers during use, but also the existence of solvents will seriously affect the formation of oil film on the surface of steel wire rope grease and the uniformity of oil film
The prior art is another example of the steel wire rope grease composition disclosed in CN103484218, which is a thickened system of fatty acid salt, which cannot achieve good film-forming properties; and the lubricating oil composition disclosed in GB2095696, which is a lubricating In the oil system, the added polyolefin increases the viscosity of the product, but it cannot achieve the thickening effect, and still cannot be used as a good elevator steel wire rope grease

Method used

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  • Heat-coating elevator steel wire rope grease and preparation method thereof
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preparation example Construction

[0057] The present invention also provides a preparation method (one-step complete thickening process) of hot-coated elevator wire rope grease, comprising the steps of:

[0058] 1) Add 3-7% microcrystalline wax, 3-10% amide thickener, and 10-20% friction enhancer to 60-83% mineral oil and mix in sequence. The temperature is controlled between 145-150°C and the 0.5~1h;

[0059] 2) Start stirring after the microcrystalline wax melts, control the stirring speed at 200-300r / min, and the stirring time is not less than 2.5h;

[0060] 3) Cool down to 110-120°C, add 1-8% antirust agent, stir for 1-1.5 hours, and fill;

[0061] Wherein, the aromatic hydrocarbon content of the mineral oil described in step 1) is between 35% and 85%, and the kinematic viscosity at 100°C is between 30% and 80mm 2 / s; step 1) to step 3) each percentage is a mass ratio.

[0062] Wherein, in a preferred embodiment of the method for preparing hot-coated elevator steel wire rope grease of the present invent...

Embodiment a

[0072] The present embodiment provides a kind of preparation method of thermal coating type elevator wire rope grease, comprises the following steps (the following percentages are mass ratios):

[0073] 1) Add 3% microcrystalline wax, 3% amide thickener, and 10% friction enhancer to 83% mineral oil in turn and mix them. The temperature is controlled at 145°C and left to rest for 0.5h;

[0074] 2) Start stirring after the microcrystalline wax melts, control the stirring speed at 200r / min, and stir for 2.5h;

[0075] 3) Cool down to 110°C, add 1% rust inhibitor, stir for 1 hour, and fill;

[0076] Wherein, the aromatic hydrocarbon content of the mineral oil described in step 1) is 35%, and 100 ℃ kinematic viscosity is 30mm 2 / s; the microcrystalline wax is 70# microcrystalline wax; the amide thickener is oleic acid amide; the friction enhancer is rosin resin; the rust inhibitor is barium sulfonate.

[0077] According to the hot-coated elevator steel wire rope grease prepared b...

Embodiment b

[0081] The present embodiment provides a kind of preparation method of thermal coating type elevator wire rope grease, comprises the following steps (the following percentages are mass ratios):

[0082] 1) Add 7% microcrystalline wax, 10% amide thickener, and 20% friction enhancer to 60% mineral oil in order to mix, control the temperature at 150°C, and let stand for 1 hour;

[0083] 2) Start stirring after the microcrystalline wax melts, control the stirring speed at 300r / min, and stir for 4 hours;

[0084]3) Cool down to 120°C, add 3% rust inhibitor, stir for 1.5h, and fill;

[0085] Wherein, the aromatic hydrocarbon content of the mineral oil described in step 1) is 85%, and 100 ℃ kinematic viscosity is 80mm 2 / s; the microcrystalline wax is 80# microcrystalline wax; the amide thickener is erucamide; the friction enhancer is rosin modified phenolic resin; the rust inhibitor is sulfonic acid sodium.

[0086] According to the hot-coated elevator steel wire rope grease prep...

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Abstract

The invention discloses a heat-coating elevator steel wire rope grease and a preparation method thereof. The grease comprises 60-83% of high-viscosity high-aromatic-hydrocarbon-content mineral oil, 3-7% of microcrystalline wax, 3-10% of an amide thickener, 10-20% of a friction enhancing agent, and 1-8% of a rust inhibitor. The heat-coating elevator steel wire rope grease provided by the invention has good film-forming performance, metal surface adhesion force, and friction performance.

Description

technical field [0001] The invention relates to a lubricating grease, in particular to a special lubricating grease for hot-coated elevator steel wire ropes. Background technique [0002] With the rapid development of the national economy and the acceleration of population urbanization, the number of medium and high-rise buildings has increased sharply. The elevator as the main means of transportation and its supporting facilities and equipment have also developed rapidly. The elevator wire rope has become the fastest growing wire rope industry. And one of the most demanded products in the market. The operating state of the elevator wire rope directly affects the production efficiency and safety factor of the elevator. As the only lubrication and protection product for elevator wire ropes, the quality of elevator wire rope grease directly affects the operating conditions of elevators. [0003] Steel wire rope grease is a lubricating grease that is applied to the surface of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N50/10C10N40/32C10N30/06
Inventor 张丽娟刘丽君姜和基李建明周圆张遂心
Owner PETROCHINA CO LTD
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