Enamelled wire is a key material in the electrical, app […]
Enamelled wire is a key material in the electrical, appliance, instrumentation and telecommunications industries. Enamelled wire performance should meet the electrical product design requirements, processing requirements and operational requirements. The use of enameled wire requires that the quality of enameled wire be guaranteed by a serious system and scientific method.
The allowable tolerance of a bare wire refers to the allowable deviation between the actual value of a bare wire diameter and a specified value. From the point of view of the use, the hope that the smaller the tolerance, the better the design resistance, the number of turns and other aspects of the calculation. However, when manufacturing the die hole in the drawing process to wear and tear deformation, if the tolerances are too strict, it is necessary to change the mold, resulting in the operation of the process and mold supply difficulties. The actual requirements for the use of units when formulating standards and the technical possibilities of production units should be "made to their best."
The difference between the maximum measured value and the minimum measured value of the same section diameter of the guideline. Non-roundness failure will result in the color of the enamel hair (Yin and Yang side).
Largest outer diameter and the smallest outer diameter of the largest film thickness difference, will increase the size of the coil, winding no less than accommodate. Thin film, will have pinholes, voltage, scratch resistance, chemical resistance, anti-aging properties such as the decline or cause waste.
Inspection Tools: Micrometers, accuracy should meet the following requirements: The meter with a lead indication error of 1μ micrometer.
Measurement at 2 o'clock 1 meter 3 surface, the average of 6 measurements for the measurement results. Whether the size is qualified by the average compared with the standard judge.