Production process for treating bone-shaped paint film of flat enameled wire

Abstract

The invention relates to a production process for treating a bone-shaped paint film of a flat enameled wire. The thickness of the paint film of a bare wire is properly enlarged by 5-40microm on the upper limit of a set technical standard by using a painting device under the condition of not influencing the electrical property, adhesiveness and appearance of a product, and then the thickness is pressed by using a second calender, an R-angle paint film has bone-shaped plastic deformation which is the same as that of a wide-surface paint film, so that the problem that the boundary dimension exceeds the standard due to the bone shape of the paint film is well solved. According to the invention, the industrial production is actually overturned from the design, but the corresponding performance of the enameled wire is not reduced, and the consistency of the electrical performance and the size is improved by 20% or more.

Description

technical field [0001] The invention relates to the technical field of enameled wire production, in particular to a production process for treating bone-shaped paint films of flat enameled wires. Background technique [0002] Enameled wire is a main variety of winding wire, which consists of two parts: conductor and insulation layer. The conductor is generally drawn with a copper rod to form a bare wire. Common bare wires have two specifications: flat wire and round wire. [0003] Compared with round wires, flat wires have many specifications. Round wires with the same diameter can be converted into 1000 types of flat wires. In order to make full use of the space in the production of flat enameled wires, the width, thickness, conductor and paint film size are relatively strict, especially in the thickness direction. Usually, the conductor size, outline size, and paint film size are very strict, and are only within the design center value ± 5um range. Products with a cross...

AI Technical Summary

Problems solved by technology

[0004] Because the flat enameled wire is rectangular, the "R" angle position of the paint film is affected by the surface tension of the liquid, and the paint film is prone to "bone-like" or "dog-bone-like", which is expressed in the industry as "false paint". Film", restricted by the size standard and external dimensions of the paint film, the electrical properties and adhesion of the product cannot meet the standards

Solving the "bone shape" of the paint film is very difficult to break through the core technical barriers of flat enameled wire. For example, Japanese companies such as Furukawa, Sumitomo, and Zhaohe cannot solve it well.

[0005] In addition, the solvent vapor and cracked products produced by the existing enameled wire oven during the baking process, after being burned in the first layer of high-temperature catalytic chamber, the VOC content does not meet the standard, and then enters the second layer of catalytic chamber for combustion, which still does not meet the requirements of the national standard. , even if the ceramic catalytic block has been installed in the catalytic combustion chamber of the existing enameled equipment manufacturer's oven, the combustion effect is still poor after process debugging

Most of the existing enameled wire ovens are hot gas circulation ovens, which continuously circulate hot air in the furnace to achieve the effect of curing enameled wire paint, but due to the single circulation process, the heat cycle efficiency is low and energy is wasted

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