Bonding technology of outer surface of tetrafluoroethylene shaft sleeve and inner hole of steel pipe

Abstract

The invention discloses a bonding technology of an outer surface of a tetrafluoroethylene shaft sleeve and an inner hole of a steel pipe, and is characterized in that the bonding technology comprises the following requirements: (1) selection of an adhesive which is an F-203A silicone pressure-sensitive adhesive; (2) the bonding technology comprising the steps: (1) surface treatment: respectively wiping the outer surface of the tetrafluoroethylene shaft sleeve and the inner hole of the steel pipe with acetone cleanly, and air-drying; (2) adhesive coating: respectively coating two bonding surfaces with the F-203A adhesive, coating totally for two times, and airing for 10-15 min at each time; and (3) bonding and curing: inserting the shaft sleeve into the inner hole of a penholder, gently rotating for 2-3 laps, curing at room temperature for 24-30 h, air-drying the adhesive liquid, drying for 15-20 min in a 100-150 DEG C drying oven, taking out the components, bonding and assembling while being hot, and curing at room temperature for 24-30 h. The procedures are reasonable, the cost is low, collocation of various parameters is reasonable and harmonious, the time is short, and the operation is sample.

Description

technical field [0001] The invention relates to a bonding process for the outer surface of a tetrafluoroethylene shaft sleeve and the inner hole of a steel pipe. Background technique [0002] The outer surface of a tetrafluoroethylene bushing and the inner hole assembly of the steel pipe on the equipment are disengaged due to impact, and need to be bonded and restored, and polytetrafluoroethylene is a difficult-to-bond material, which is difficult to bond with a general adhesive. Some maintenance schemes for the outer surface of the tetrafluoroethylene bushing and the inner hole of the steel pipe, but the process arrangement is unreasonable, the process is numerous, and the time is long, which can no longer meet the requirements and needs to be improved to improve performance. Contents of the invention [0003] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a bonding process for the outer s...

AI Technical Summary

Problems solved by technology

[0002] The outer surface of a tetrafluoroethylene bushing and the inner hole assembly of the steel pipe on the equipment are disengaged due to impact, and need to be bonded and restored, and polytetrafluoroethylene is a difficult-to-bond material, which is difficult to bond with a general adhesive. Some maintenance schemes for the outer surface of the tetrafluoroethylene bushing and the inner hole of the steel pipe, but the process arrangement is unreasonable, the process is numerous, and the time is long, which can no longer meet the requirements and needs to be improved to improve performance