Method for manufacturing metallic pipe, and method for washing metallic pipe
A manufacturing method and technology of metal tubes, applied in metal extrusion cleaning equipment, cleaning methods using liquids, manufacturing tools, etc., can solve problems such as difficult to remove coatings, and achieve good cleaning effect
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[0155]Example
[0156]Next, the present invention will be described in more detail by way of examples. However, the present invention is not limited to the following examples.
[0157][Example]
[0158]In order to confirm the cleaning effect of the metal tube of the present invention, usefigure 2 The alkali cleaning device 10 shown andFigure 4 The ultrasonic cleaning apparatus 20 is shown to perform the cleaning test of the metal tube P after the cold drawn. That is, in the base cleaning device 10, the alkali cleaning step is performed by the alkali cleaning process that is not heated by high temperature, in the ultrasonic cleaning device 20, the ultrasonic cleaning process is carried out using a cleaning solution applied to ultrasonic and microbubbles. In the present embodiment, the temperature of the base deperofin used in the alkali cleaning step is a temperature determined according to the peripheral temperature of the base cleaning device 10, specifically about 25 ° C. In this embodimen...
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