Incoming material checking method of magnetic core

Abstract

The invention provides an incoming material checking method of a magnetic core. The method comprises: step one, visual inspection is carried out; to be specific, whether phenomena of deformation, magnetic elimination, high surface smoothness without any coarse effect, and crystalline occurrence occur at magnetic cores is detected, a plurality of magnetic core are selected and are broken, and whether the internal structures of the magnetic cores are distributed uniformly and compactly is observed; step two, process dimensions are measured; to be specific, according to specification requirements, lengths, widths, heights, and air gaps of the magnetic cores are measured; step three, instrument measurement is carried out; to be specific, inductance values of the magnetic cores are measured by using a henrymeter; step four, a normal-temperature inductance value of a transformed formed by the measured magnetic core is measured, numbering and recording are carried out, the transformer is placed into an oven and a pin of the transformer is connected by a wire and is led out of the oven, the temperature is adjusted, the inductance value is measured at a temperature interval of 10 DEG C and the measured value is recorded, and the change of the inductance value is observed; and a sport checking situation is recorded into an incoming material checking report table and determination of acceptance allowing or product returning is made. According to the invention, the incoming material checking method of a magnetic core is formulated specifically; the checking requirement is standardized; the quality supervision is enhanced; the product supply quality is improved; and the production efficiency is enhanced.

Description

technical field [0001] The invention relates to the field of household electrical appliances, in particular to a method for inspecting incoming materials of magnetic cores. Background technique [0002] IQC is the quality inspection of incoming materials, which refers to the quality confirmation and inspection of purchased raw materials, components or products, that is, when the supplier sends raw materials or components to inspect the products by sampling, and finally make a judgment whether the batch of products is Receive or return. [0003] IQC is the first checkpoint to control the quality of enterprise products before production. If unqualified products are put into the manufacturing process, it will lead to unqualified manufacturing processes or final products, resulting in huge losses. IQC not only affects the quality of the company's final products, but also affects various direct or indirect costs. [0004] In the manufacturing industry, the four main items that ...

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Problems solved by technology

[0005] In the prior art, there is no report on the incoming material inspection method for the magnetic core

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