Manufacturing method of corona-resistant polyimide film sintered enamelled copper strap wires

A technology of polyimide film and manufacturing method, which is applied in the direction of cable/conductor manufacturing, circuit, electrical components, etc., can solve the problems of being unable to withstand high temperature, high pressure, and limited mechanical properties, and achieve strong mechanical properties and increase corona resistance High performance and high corona resistance
CN102800423BActive Publication Date: 2014-04-23SICHUAN JINRUI ELECTRIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN JINRUI ELECTRIC
Publication Date
2014-04-23
Patent Text Reader

Abstract

The invention relates to a manufacturing process of enamelled copper strap wires, and particularly relates to a manufacturing method of corona-resistant polyimide film sintered enamelled copper strap wires. The manufacturing method comprises the following steps of: processing a copper conductor into a copper strap wire; making the copper strap wire to a 200-grade polyester-imine / polyamide-imide compound type enamelled copper strap wire; and covering a corona-resistant polyimide film on the enamelled copper strap wire and then heating, baking and sintering the enamelled copper strap wire. The manufacturing method combines an enameling process and a glass-coating process, overcomes the limitation of the conventional process, makes up single performance of the existing process, and well combines the enameling process and the glass-coating process; and the product has high corona resistance strength and reaches a high temperature resistance level.
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Description

technical field

[0001] The invention relates to a manufacturing process of an enamelled copper flat wire, in particular to a production method of a corona-resistant polyimide film sintered enamelled copper flat wire. Background technique

[0002] Enameled wire is used for winding wire of variable frequency motor. But for corona-resistant enamelled copper flat wire, this kind of winding wire requires good insulation strength and good corona resistance. This kind of copper flat wire is especially used in environments requiring high corona resistance, such as thermal power generation, wind power generation, and nuclear submarine motors.

[0003] There are also improvements to copper flat wires in the existing patents. For example, the application number is 200920042418.3, and the application date is 2009-6-19. , the technical solution is: a corona-resistant polyimide film sintered copper flat wire, including a copper flat wire and a thin film layer sintered on the surface of ...

Claims

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