A high temperature resistant water-based graphite mandrel lubricant

Abstract

The invention provides high-temperature-resistant water-base graphite core rod lubricant, and relates to the technical field of high-temperature lubricant. The high-temperature-resistant water-base graphite core rod lubricant is prepared from, by weight, 27%-34% of graphite, 2%-5% of acrylic resin emulsion, 0.3%-0.8% of CMC, 1%-2% of PR dispersing agents, 0.1%-0.5% of preservative, 1%-2% of water glass, 2%-6% of sodium tripolyphosphate, 0.1%-0.5% of emulsified silicone oil, 0.1%-0.6% of dibutyl phthalate and the balance water. Compared with existing water-base graphite lubricant, the high-temperature-resistant water-base graphite core rod lubricant can reduce power consumption of a continuous rolling unit and the black smoke output in the rolling process, and meanwhile the high-temperature-resistant water-base graphite core rod lubricant has an extremely low high-temperature friction coefficient and is capable of greatly prolonging the service life of a core rod.

Description

technical field [0001] The invention relates to the technical field of high-temperature lubricants, in particular to a high-temperature-resistant water-based graphite mandrel 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, the above-mentioned water-based graphite mandrel lubricant includes graphite 20-40%, composite resin emu...

AI Technical Summary

Problems solved by technology

Although the water-based graphite mandrel lubricant has a low high-temperature friction coefficient under the condition of 1150 degrees Celsius, it also has the following disadvantages: 1. The water-based graphite mandrel lubricant is used for continuous rolling of seamless steel pipes. The average rolling current of the rolling mill is high, the power consumption of the continuous rolling unit is high, and the service life of the mandrel is not long enough

2. The water-based graphite mandrel lubricant produces a lot of black smoke under high-temperature rolling conditions above 1200 degrees Celsius, and its high-temperature friction coefficient still needs to be improved