Helium gas leakage test process

Abstract

The invention discloses a helium gas leakage test process. A rim to be tested is placed on a lower gasket and is segmented into an inner space and an outer space by a hub, and an upper gasket is arranged on the rim to be tested in a covering way to separate the inner space from the outer space; the rim to be tested and the upper gasket are arranged between an outer cover and the lower gasket by the outer cover in a covering way, and the inner space and the outer space between the outer cover and the rim are vacuumized under the action of a first vacuumizing tube and a second vacuumizing tube; helium gas with a predetermined pressure is filled in the inner space by a helium gas filling head to keep pressure, and a gas leakage detection mechanism positioned at the outer space is used for detecting the gas leakage amount; whether the current tested rim is qualified or not is determined according to the situation of gas leakage amount, the qualified rim is pushed to a qualified assembly line, and the unqualified rim is pushed to an unqualified assembly line. The accuracy of rim quality detection can be greatly improved.

Description

technical field [0001] The invention relates to the field of rim production and processing technology, in particular to a helium gas leak test process, which has the characteristics of stable test performance and high test efficiency. Background technique [0002] After casting, the rim generally includes the rim, spokes and mounting plate. The rim is ring-shaped. In order to make the formed rim meet the corresponding national standards, it is necessary to carry out quality inspection on the rim of the rim, which is a very important test. It is to detect whether there are processing defects in the rim. The traditional method of processing defects is to use the water test method. The water test method places the cast rim in water, seals the two openings, and then fills the interior with gas. , and then determine whether there is gas coming out by human eye observation. This traditional operation method has at least the following defects: [0003] 1. Due to the way of human e...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the way of human eye observation, only larger defects can often be found. For some smaller defects, it is difficult to judge accurately by human eyes, which has caused certain uncontrollable factors to the quality of the product. Affect the company's external quality performance

[0004] 2. The current conventional method is that the outside of the rim is directly in contact with the atmosphere, and the actual application of the rim cannot be actually simulated by the underwater detection. The actual detection effect is still not particularly accurate, and there is room for improvement.

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