Glass lubricating powder spraying device for inner wall of pipe during high-temperature extrusion

Abstract

A glass lubricating powder spraying device for the inner wall of a pipe during high-temperature extrusion comprises a gun body 1, a feeding assembly 4, a gas supply assembly 5 and a discharging spraypipe 2, wherein the feeding assembly 4 is used for containing glass powder, the gas supply assembly 5 is used for containing high-pressure gas, a material mixing inner cavity 3 is formed in the gun body 1, and the feeding assembly 4 is fixedly installed at the upper end of the gun body 1 and communicates with the material mixing inner cavity 3. The gas supply assembly 5 is fixedly connected with the gun body 1 and communicates with the mixing inner cavity 3, the discharging spray pipe 2 is fixedly connected with the end, deviating from the gas supply assembly 5, of the gun body 1 and communicates with the material mixing inner cavity 3, and discharging spray holes are formed in the pipe wall of the discharging spray pipe 2. When the discharging spray pipe 2 extends into the high-temperature pipe, glass powder sprayed from the discharging spray holes can be adhered to the inner wall of the high-temperature pipe and softened to form a uniform colloidal lubricant covering layer, so that the high-temperature pipe is fully and uniformly lubricated during hot extrusion, the hot extrusion quality of the high-temperature pipe is improved, and the service life of the high-temperature pipe is prolonged; and the damage probability of an extrusion die is reduced.

Description

technical field [0001] The invention belongs to the technical field of high-temperature pipe hot extrusion lubricating equipment, and in particular relates to the technology of lubricating powder spraying on the inner wall of pipe hot extrusion. Background technique [0002] When large-scale pipes are hot-extruded at a temperature of 800 ℃ to 1000 ℃, it is necessary to use glass powder lubricant to lubricate the inner and outer walls of the pipe to avoid adhesion between the mold and the pipe blank and ensure the normal progress of the hot extrusion process. At present, there is still no automatic equipment to spray glass lubricating powder on the inner wall of the pipe during hot extrusion. The main technical means of coating the inner wall of large pipes with glass powder is mostly to insert a sharp spoon filled with glass powder into the inner hole of the pipe blank The glass powder is poured on the inner wall of the pipe blank, so that the glass powder can be coated on t...

AI Technical Summary

Problems solved by technology

[0003] However, because the glass powder is poured on the inner wall of the pipe blank by a sharp spoon, the glass powder cannot be uniformly covered on the inner wall of the pipe blank, which will cause the pipe blank to be squeezed during forward extrusion or reverse extrusion. Part of the inner wall of the pipe blank sticks to the extrusion die, which will have a negative impact on the quality of the extruded pipe, and will also cause damage to the extrusion die. When using a pointed spoon for dusting, different lengths of pipes require different lengths. The pointed spoons match with it, so it is necessary to prepare pointed spoons of different specifications, and the amount of glass powder is relatively large when using pointed spoons for dusting. The uniformity of powdering depends on the experience and technology of powdering workers, and there is no standardized process.

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