Ink lubrication rolling method for shaped roll

Abstract

The invention relates to an ink lubrication rolling method for a shaped roll, and belongs to the technical field of profile steel production in the metallurgical industry. According to the technical scheme, the method comprises the following steps that 1, solid graphite (2) is attached to a part, needing to be lubricated, of the roll (1); 2, at least one through hole (9) is formed in the solid graphite (2), one ends of the through holes (9) are located in a contact face of the solid graphite (2) and the roll (1), and the other ends of the through holes (9) are connected with an oil pump (5) and an oil tank (7) through an oil way (4) provided with a one-way valve (3); and 3, in the rolling process of the profile steel, lubricating oil is injected into the contact area of the solid graphite (2) and the roll (1) through the oil pump (5), the lubricating oil is mixed with graphite powder obtained after friction of the solid graphite (2) by means of attaching friction of the solid graphite (2) and the roll (1), a mixed layer of the graphite powder and the lubricating oil is formed on the surface of the roll (1), and therefore the phenomenon that the roll adheres to steel is reduced.

Description

technical field [0001] The invention relates to an ink-lubricated rolling method for a section steel roll, belonging to the technical field of section steel production in the metallurgical industry. Background technique [0002] During the rolling process of the rail, when the rolled piece enters the pass, due to impact, metal deformation and friction, it is very easy to cause the roll to stick to the steel locally. After the roll sticks to the steel, the grinding wheel can only be used to stop and grind the roll. It has a significant impact on rail quality and production efficiency, and is a major problem in rail production. [0003] For the local steel sticking phenomenon of the roll, the effect of pre-grinding and roll material optimization is not obvious, and the use of lubricating oil for lubricating rolling has a certain effect, but the cost is high, and oil lubricating rolling also affects environmental protection. In addition, the use of graphite rolls can reduce th...

AI Technical Summary

Problems solved by technology

[0002] During the rolling process of the rail, when the rolled piece enters the pass, due to impact, metal deformation and friction, etc., it is very easy to cause the roll to stick to the steel locally. After the roll sticks to the steel, the grinding wheel can only be used to stop the roll. It has a significant impact on rail quality and production efficiency, and is a major problem in rail production

[0003] In view of the local steel sticking phenomenon of the roll, the effect of pre-grinding and roll material optimization is not obvious, and the use of lubricating oil for lubricating rolling has a certain effect, but the cost is high, and oil lubricating rolling also affects environmental protection

In addition, the use of graphite rolls can reduce the friction coefficient and reduce the purpose of sticking to steel, but after the material is changed, there will be "peeling" in individual passes. The reason is that graphite is easy to accumulate under the skin during the casting process. New surface quality problems are caused under stress conditions, and the cost of rolls is also nearly 50% higher. They cannot be used in the rail production process. There are cases where graphite rolls are used in various rail factories, but they cannot be used as substitutes in large areas.

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