Hot-compress dip-coating insulation method of copper bar

Abstract

The invention relates to an insulation method of copper bars, in particular to a hot-compress dip-coating insulation method of copper bar, solving the defect and insufficiency of the existing insulation method of copper bars. The hot-compress dip-coating insulation method comprises the following steps: 1. a copper bar is cleaned, and the electric interface of the copper bar is protected and bound up; 2. the copper bar is preheated at the temperature of 170 to 190 DEG C, and kept for 20 minutes at the temperature of 170 to 190 DEG C; 3. the preheated copper bar is put in an epoxy encapsulating material fluidized bed, the surface of the copper bar is treated with hot pack by epoxy encapsulating material, and then dusting powder on the surface of the copper bar is quickly twittered; 4. the electric interface of the copper bar, which is treated with hot pack, is protected and eliminated, and the end of the electric interface is trimmed; and 5. at the temperature of 140 to 150 DEG C, the copper bar is solidified for 30 minutes, and then the solidified copper bar is dried. The invention improves the insulativity, the chemical resistance, the weather fastness and the like of the copper bar, lightens labor intensity, saves cost, improves the service life of the copper bar, and solves the inextricable problems of the existing insulation lapping and heat shrinking of tubing.

Description

technical field

[0001] The invention relates to an insulation method, in particular to a copper bar insulation method, in particular to a copper bar hot-coating and dip-coating insulation method. Background technique

[0002] Various types of insulated copper bars are widely used conductive equipment on locomotives. At present, the insulation treatment methods of copper bars are mainly divided into two methods: wrapping insulation and heat-shrinkable tube packaging. Wrapping insulation first wraps two layers of polyimide film half-fold in the insulation area, half-folds two layers with silicone rubber self-adhesive tape, half-folds one layer with glass ribbon, and then half-folds polyimide film Both ends are half-folded with silicone rubber self-adhesive tape, and finally the wrapped copper bars are prebaked (temperature 110-130°C, time 120 minutes), cured (temperature: 150-155°C, time 7- 8 hours), painting (use a 1.5-inch brush to brush 9150 insulating paint 2-3 times on t...

Examples

Embodiment Construction

[0012] Copper row hot-coating dip-coating insulation method, the method is realized by the following steps: a. Clean the copper row, and then protect and wrap the electrical contact surface of the copper row; b. Put the copper row at a temperature of 170 ° C (or 175 ℃, or 178°C, or 182°C, or 188°C, or 190°C) and keep warm at this temperature for 20 minutes; c. Fluidize the preheated copper row in the epoxy encapsulation material In the bed, heat the surface of the copper bar with epoxy encapsulation material, and then quickly shake the floating powder on the surface of the copper bar; d, remove the protection of the electrical contact surface of the copper bar after the hot compress and trim the end; e, the copper bar at a temperature of Cured at 140°C (or 142°C, or 145°C, or 148°C, or 149°C, or 150°C) for 30 minutes and then dried naturally. When the copper bar is preheated, the copper bar with a thickness of less than 5mm is preheated at a temperature of 170°C (or 172°C, or ...

technical field

[0001] The invention relates to an insulation method, in particular to a copper bar insulation method, in particular to a copper bar hot-coating and dip-coating insulation method. Background technique

[0002] Various types of insulated copper bars are widely used conductive equipment on locomotives. At present, the insulation treatment methods of copper bars are mainly divided into two methods: wrapping insulation and heat-shrinkable tube packaging. Wrapping insulation first wraps two layers of polyimide film half-fold in the insulation area, half-folds two layers with silicone rubber self-adhesive tape, half-folds one layer with glass ribbon, and then half-folds polyimide film Both ends are half-folded with silicone rubber self-adhesive tape, and finally the wrapped copper bars are prebaked (temperature 110-130°C, time 120 minutes), cured (temperature: 150-155°C, time 7- 8 hours), painting (use a 1.5-inch brush to brush 9150 insulating paint 2-3 times on t...

Examples

Embodiment Construction

[0012] Copper row hot-coating dip-coating insulation method, the method is realized by the following steps: a. Clean the copper row, and then protect and wrap the electrical contact surface of the copper row; b. Put the copper row at a temperature of 170 ° C (or 175 ℃, or 178°C, or 182°C, or 188°C, or 190°C) and keep warm at this temperature for 20 minutes; c. Fluidize the preheated copper row in the epoxy encapsulation material In the bed, heat the surface of the copper bar with epoxy encapsulation material, and then quickly shake the floating powder on the surface of the copper bar; d, remove the protection of the electrical contact surface of the copper bar after the hot compress and trim the end; e, the copper bar at a temperature of Cured at 140°C (or 142°C, or 145°C, or 148°C, or 149°C, or 150°C) for 30 minutes and then dried naturally. When the copper bar is preheated, the copper bar with a thickness of less than 5mm is preheated at a temperature of 170°C (or 172°C, or ...

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