Detection method for quickly judging separation between bearing bush base material and alloy

Abstract

The invention provides a detection method for quickly judging the separation between a bearing bush base material and an alloy. The detection method comprises the following steps of: firstly, finding five points uniformly on the same vertical cross section of the surfaces of an alloy layer of a bearing bush; processing air holes on the first point and the fifth point respectively as air paths, wherein the bottom edge of each air hole is tangent with the metal surface of the bearing bush base material, and the processing depth of each air hole is the same as the thickness of the alloy on the bearing bush; secondly, connecting the above air path of the first point and an air source, arranging a pressure-adjusting valve on the air source, and adjusting an air flow by using the pressure-adjusting valve; coating soap water into the air hole of the fifth point, switching on the above air source and blowing air into the air path of the hole; if bubbles emerge from the lower side, indicating that the alloy material layer of the bearing bush is separated from a steel plate base material surface or the alloy welded to the bearing bush is untight; and if no bubble emerges from the lower side, keeping judging. At most five air holes are processed on the surface of the alloy layer of the bearing bush and uniformly distributed on the surface of the alloy layer, so the method can be used fordetecting precisely. By the method, the attachment between the bearing bush base material and the alloy can be judged quickly.

Description

technical field [0001] The method of the invention relates to a method for judging whether the metal surface of the steel plate of the base material of the bearing bush is detached from the alloy or the bonding of the bearing bush alloy is not tight during welding. Specifically, it relates to a method for quickly checking the detachment of the bearing bush by using air holes. Background technique [0002] Bearing bushes, also known as bushings, are widely used in rotating mechanical equipment in thermal power plants, hydropower plants, power stations, cement plants, fertilizer plants, etc., and are important components of gas turbines, generators, feed water pumps, and ball mills. Bearing pads are rolled or sintered from special high-temperature-resistant and wear-resistant alloy materials. The bonding quality between layers is the key feature to ensure the reliability of the bearing pads. Due to improper welding process of the bearing pad or low assembly accuracy, the allo...

AI Technical Summary

Problems solved by technology

However, the cost of flaw detection is high and the time is long, and generally small and medium-sized enterprises do not have this ability, and this inspection method is not effective for bearing bushes with a semi-cylindrical structure.

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