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A kind of water-based graphite lubricant for hot-rolled seamless steel pipe and preparation method thereof

A technology of graphite lubricant and seamless steel pipe, applied in lubricating composition, petroleum industry, etc., can solve problems such as uneven distribution of graphite, uneven distribution of graphite, current fluctuation of continuous rolling mill, etc., and achieve uniform distribution of graphite and good lubricating effect , The effect of rolling current reduction

Active Publication Date: 2017-08-25
HUNAN JINHUA SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the water-based graphite mandrel lubricant has a low high-temperature friction coefficient and a good lubricating effect, it also has the following disadvantages: 1. The distribution of graphite in the lubricant is uneven. During the rolling process, the current fluctuation of the continuous rolling mill is relatively large

Method used

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  • A kind of water-based graphite lubricant for hot-rolled seamless steel pipe and preparation method thereof

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Embodiment approach

[0014] As an embodiment of the present invention, a water-based graphite lubricant for hot-rolled seamless steel pipes, the weight percentage of its components is: graphite 25-35%, dispersant 0.5-2%, phosphoric acid Salt 1-3%, resin emulsion 1-2%, thickener 0.5-1%, defoamer 0.1-0.2%, the balance is water, the above-mentioned dispersant is naphthalenesulfonic acid formaldehyde condensate sodium salt, the above-mentioned phosphate It is sodium tripolyphosphate, the above-mentioned resin emulsion is one of styrene-acrylic emulsion or water-based epoxy resin emulsion, and the above-mentioned thickener is one of sodium carboxymethyl cellulose, organic bentonite, xanthan gum, and polyacrylamide Or a mixture of several, the above-mentioned defoamer is simethicone emulsion.

[0015] As a preferred embodiment, the proportion by weight of the components of the water-based graphite lubricant for hot-rolled seamless steel pipes is: graphite 30%, dispersant 0.5%, phosphate 1.5%, resin emul...

Embodiment 1

[0026] At normal temperature and pressure, according to the attached figure 1 According to the weight ratio given in , first add water, graphite and naphthalenesulfonic acid formaldehyde condensate sodium salt into the reactor and stir for 30 minutes, then add styrene-acrylic emulsion and sodium tripolyphosphate into the reactor and stir for 20 minutes, and finally add carboxylate Sodium methylcellulose and simethicone emulsion were added into the reactor and stirred for 1 hour to obtain the water-based graphite lubricant of this embodiment. Thereafter, the obtained water-based graphite lubricant was divided into two parts, one part was used to test the high-temperature friction coefficient, and the other part was used to roll Φ89mm seamless steel pipes in the continuous rolling mill, and the current fluctuation data of the continuous rolling mill during the production process were recorded Range and current average value, the above-mentioned high temperature friction coeffici...

Embodiment 2

[0028] Embodiment 2 is compared with embodiment 1, only the weight proportion of each component changes, and other contents are exactly the same, and the weight proportion of each component of embodiment 2 is in appended figure 1 Listed in, this will not go into details, the high temperature friction coefficient value, current fluctuation data range and current average value of embodiment 2 are also in the appended figure 1 listed in .

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Abstract

The invention provides a water-based graphite lubricant for hot-rolled seamless steel pipes and a preparation method of the water-based graphite lubricant, and relates to the technical field of high-temperature lubricants. The weight ratio of the components is: graphite 25-35 %, 0.5-2% dispersant, 1-3% phosphate, 1-2% resin emulsion, 0.5-1% thickener, 0.1-0.2% defoamer, the balance is water, and the dispersant is naphthalene Sulfonic acid formaldehyde condensate sodium salt, described phosphate is sodium tripolyphosphate, described resin emulsion is a kind of in styrene-acrylic emulsion or aqueous epoxy resin emulsion, and described thickener is sodium carboxymethyl cellulose, One or a mixture of organic bentonite, xanthan gum, and polyacrylamide, and the defoamer is simethicone emulsion. The water-based graphite lubricant has a good lubricating effect. At the same time, when the water-based graphite lubricant is used for hot rolling of seamless steel pipes, the rolling current fluctuation is small and the average rolling current is low, which greatly reduces the cost of the continuous rolling mill. energy consumption.

Description

technical field [0001] The invention relates to a high-temperature lubricant and a preparation method thereof, in particular to a water-based graphite lubricant for hot-rolled seamless steel pipes and a preparation method of the water-based graphite lubricant. Background technique [0002] In the hot rolling process, the metal is deformed in the annular space surrounded by the roll and the mandrel, and there is a large interaction force between the mandrel and the metal. The mandrel lubricant can promote the uniform deformation of the metal, reduce the rolling force and mandrel limit force, reduce the uneven thickness of the steel pipe transverse wall, improve the surface quality of the steel pipe, increase the heat insulation performance, reduce the mandrel surface temperature, and thus increase the service life of the mandrel and pipe quality. [0003] Chinese invention patent 201210166611.4 discloses a water-based graphite mandrel lubricant and its preparation method. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/02C10N30/06C10N40/24
Inventor 唐鹏飞
Owner HUNAN JINHUA SCI & TECH GRP
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