Process for bonding metal circular tube rubber lining

Abstract

The invention relates to a process for bonding a metal circular tube rubber lining. The process for bonding the metal circular tube rubber lining comprises the following steps of carrying out sand blasting on the inner wall of a metal circular tube; brushing base gel on the inner wall, drying and then brushing a binding agent; placing a prefabricated cylindrical rubber plate into the metal circular tube; placing a cylindrical air bag with two sealed ends into the cylindrical rubber plate, wherein the wall thickness of the air bag from a middle thin-wall part to the walls at two ends is gradually increased, and one end is connected to an air valve nozzle; inflating air in the air bag through the air valve nozzle, wherein the air bag is expanded, and the diameter of the middle thin-wall part is increased firstly to tightly press the cylindrical rubber plate and the metal circular tube; and gradually expanding to press two ends of the metal circular tube through the air bag along with the inflating process. Through the process for bonding the metal circular tube rubber lining, the air bag having two sealed ends and the wall thickness which is gradually increased from the middle to two ends is adopted; after the air valve nozzle connected to one end is inflated, a process of applying pressure to the rubber plate from the middle to two sides and from inside to outside is realized, so that the rubber plate is evenly bonded to the inner wall of a steel tube; the bonding quality is improved; the labor efficiency is improved.

Description

technical field [0001] The invention relates to a rubber lining bonding process of a metal circular pipe, which belongs to the field of wear-resistant rubber lining of metal steel pipes. Background technique [0002] The general viscose process for metal steel pipes lined with wear-resistant rubber is to firstly sandblast the inner wall of the steel pipe to clean the surface of the inner wall. Then brush the primer on the inner wall once, and after the primer dries, apply the adhesive for the second time. Put the pre-bonded cylindrical rubber sheet of equal length into the steel pipe, and manually beat the inner wall of the rubber sheet with a rubber hammer to make the rubber sheet and the metal steel pipe tightly bonded. When the metal steel pipe is slightly longer or when the steel pipe is bent. Hitting cannot be achieved with a hand hammer, and in order for the rubber sheet to be fully and evenly bonded to the steel pipe, it must first be struck from the middle of the s...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a rubber-lined bonding process for metal round pipes, which overcomes the prior art of using a rubber hammer to manually beat the cylindrical rubber plate inside the metal pipe so that it can be tightly bonded to the metal pipe. This method leads to the defect that the metal pipe is too long to be hammered, or the rubber sheet cannot be evenly bonded to the inner wall of the steel pipe.

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