JPH0886565A - Method of heating and drying metal linear material after cleaning - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a heating and drying method capable of reducing surface contamination of metal linear materials such as metal hoop material and wire material and further making the heating temperature distribution uniform. [Structure] The outer side of a heat insulating material 3 for removing the influence of the outside air is surrounded by a dry box exterior 2 and an electromagnetic wave reflector 4 is used as an inner surface of a dry box 6 inside, and an electromagnetic wave generating coil 5 is installed therein. The metal linear material 1 is run through the electromagnetic wave generating coil 5.

Description

Detailed Description of the Invention

[0001]

This invention relates to copper, copper alloys and Ni-F.
The present invention relates to a method for heating and drying a metal linear material such as a metal hoop material and wire made of an e-alloy.

[0002]

2. Description of the Related Art Conventional methods of heating and drying metal linear materials such as metal hoop materials and wires made of copper, copper alloys and Ni--Fe alloys are hot air blowing method and heating method by heat radiation of heater. It was common.

[0003]

However, in the hot air blowing method, since air is generated, dust and contaminants in the air are entrained, which adhere to the surface of the metal material and contaminate the surface, and the next step In the case where the masking tape is applied, the adhesion of the masking tape was deteriorated. Furthermore, since air is used as the heat medium, it is affected by the ambient temperature,
It is difficult to control the heating temperature. The temperature distribution of the metal material itself was also non-uniform.

Further, in the heating method using the heat radiation of the heater, when there is no contact between the metal material and the heater, the thermal efficiency is low, the temperature distribution is likely to be non-uniform, and the temperature control of the material is difficult. Further, when the metal material and the heater are brought into contact with each other, there is a problem that foreign matter such as dust of the material forming the furnace body adheres to the surface of the metal material and the metal material is scratched.

The object of the present invention is to improve the above-mentioned drawbacks of the prior art, reduce surface contamination of metal linear material such as metal hoop material, wire material, and the like, and further make the heating temperature distribution uniform. Another object of the present invention is to provide a subsequent method for heating and drying the metal linear material.

[0006]

The gist of the present invention resides in that the metal linear material after cleaning is heated and dried by running in an electromagnetic wave generating coil, whereby uniform heating and surface contamination are prevented. In addition, in the case where the masking tape is applied in the next step, the adhesiveness when applying the masking tape is improved.

In the present invention, the heating and drying method in which the metal linear material is run in the electromagnetic wave generating coil is such that the conductor of the metal linear material moves in the magnetic field across the magnetic flux to pass through the metal wire. This utilizes the fact that an electromotive force is generated in the conductor of the linear material and the metal linear material itself is thereby heated. According to this heating and drying method, it is possible to obtain uniform heating and a reduction in pollution due to a reduction in air flow.

[0008]

EXAMPLE An example of the method for heating and drying a metal linear material according to the present invention will be described with reference to the drawings. A heating and drying device having the following structure is installed in a process that requires heating or drying of the metal linear material 1 as shown in FIG. That is, the apparatus is configured such that the outer side including the heat insulating material 3 for removing the influence of the outside air is the dry box exterior 2, the inner side of the dry box is surrounded by the electromagnetic wave reflector 4, and the electromagnetic wave generating coil 5 is installed in the dry box 6. Then, the metal linear material 1 is caused to run in the inside to heat and dry. The temperature inside the drying box 6 is measured by the infrared thermometer 7.

[0009]

According to the heating and drying method of the present invention, the temperature distribution of the metal linear material is uniform, and it is less susceptible to environmental conditions than the conventional method. Further, the degree of contamination on the surface of the metal linear material becomes about 1/10 of the conventional contamination amount. (6000-8000pp
m becomes 200 to 300 ppm).

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the heating and drying method of the present invention.

[Explanation of symbols]

 1 Metal Wire Material 2 Dry Box Exterior 3 Heat Insulation Material 4 Electromagnetic Wave Reflector 5 Electromagnetic Generation Coil 6 Dry Box 7 Infrared Thermometer

Claims (1)

[Claims] 1. A method of heating and drying a metal linear material such as a metal hoop material or wire material after cleaning, wherein the metal linear material after cleaning is heated and dried by running in an electromagnetic wave generating coil. A method for heating and drying a metal linear material after cleaning.