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Electrophoresis painting dressing technical method for pipe fitting type metal, and metal piece with deep hole, and deep concave

A technology of electrophoretic coating and metal parts, applied in the direction of electrolytic coating, electrophoretic plating, coating, etc., can solve problems such as anti-corrosion, and achieve the effect of wide application range and simple process

Inactive Publication Date: 2007-07-25
李再亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the defects of the existing methods, to provide a technical method for electrophoretic coating of pipe-type metals and deep-hole deep concave parts, which solves the problems of the inner and outer walls and inner walls of metal pipe-type parts and deep-hole deep concave parts. , the electrophoresis problem of the outer cavity, so as to completely solve the anti-corrosion problems of the inner and outer walls of such workpieces and the inner and outer cavities

Method used

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  • Electrophoresis painting dressing technical method for pipe fitting type metal, and metal piece with deep hole, and deep concave
  • Electrophoresis painting dressing technical method for pipe fitting type metal, and metal piece with deep hole, and deep concave
  • Electrophoresis painting dressing technical method for pipe fitting type metal, and metal piece with deep hole, and deep concave

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Effect test

Embodiment 1

[0015] As shown in Figure 1, the concrete steps of the present invention are as follows:

[0016] 1. Connect the workpiece to the negative pole (-) of the power supply.

[0017] 2. Put the auxiliary anode into the workpiece.

[0018] 3. Connect the auxiliary anode to the positive pole (+) of the power supply, and connect the anode of the electrophoresis tank to the positive pole (+) of the power supply.

[0019] 4. Put the electrophoretic workpiece into the electrophoretic coating solution. Electrophoretic coating can choose polybutadiene resin, phenolic resin, epoxy resin, acrylic resin or polyurethane.

[0020] 5. Turn on the power. There are many methods: (1) Segmented electrophoresis can be used, and the anode and the auxiliary anode are connected and controlled by a switch. A. Electrophoresis the inside of the workpiece first, connect the switch to the auxiliary anode, and then electrophoresis the inside of the workpiece. After that, the power switch will be switched...

Embodiment 2

[0023] As shown in Figure 2, the concrete steps of the present invention are as follows:

[0024] 1. Connect the workpiece to the positive pole (+) of the power supply.

[0025] 2. Put the auxiliary cathode into the workpiece.

[0026] 3. Connect the auxiliary cathode to the negative pole (-) of the power supply, and connect the cathode of the electrophoresis tank to the negative pole (-) of the power supply.

[0027] 4. Put the electrophoretic workpiece into the electrophoretic coating solution. Electrophoretic coating can choose polybutadiene resin, phenolic resin, epoxy resin, acrylic resin or polyurethane.

[0028] 5. Turn on the power. There are many methods: (1) Segmented electrophoresis can be used, and the cathode and the auxiliary cathode are connected with a switch for control. A. First, the inside of the workpiece is electrophoresed, and the switch is connected to the auxiliary cathode, and then the inside of the workpiece is electrophoresed. After that, switch ...

Embodiment 3

[0030] Embodiment 3 when cathodic electrophoresis process:

[0031] As shown in Figure 3, the workpiece (A) is the piece to be electrophoresed, connected to the negative pole (-) of the electrophoresis source, and the anode C is connected to the positive pole (+) of the power supply. At the same time, an auxiliary anode ( B). The auxiliary anode material is metal or non-metallic metallized conductor, which can pass current. The distance between the auxiliary anode and the inner pipe wall of the deep hole and the deep concave part can be far or close, but it cannot be in direct contact with the workpiece (A). It is necessary to use non-conductive non-conductive objects such as plastic, rubber, wood and other non-conductive bodies to support or block the auxiliary anode from touching and contacting the workpiece. At the same time, the non-conductive body has regular or irregular holes. It is beneficial for the electrophoretic coating to enter the interior of the workpiece. Th...

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Abstract

This invention relates to a method for metal surface electrophoretic coating, more specifically, a method for electrophoretic coating of tube-shaped, deep-hole-shaped or concave-shaped metal surface. The method comprises: putting an auxiliary cathode into the deep hole of the metalwork during anode electrophoresis process. The method has such advantages as simple process and wide applications. The method can realize electrophoretic treatment of inner and outer wall as well as inner and outer chamber of tube-shaped, deep-hole-shaped or concave-shaped metals thus can completely solve the preservative problem of inner and outer wall as well as inner and outer chamber.

Description

technical field [0001] The invention relates to a metal surface electrophoretic coating method, in particular to a method for electrophoretic coating of pipe-type metals and metals with deep holes and deep recesses. Background technique [0002] Since the development and industrial application of electrophoretic coating technology in the 1960s, due to its excellent high corrosion resistance, high penetration rate, high Coulomb efficiency, insoluble coating, stable bath solution and high degree of automation, etc. Therefore, it has been widely used in industries such as automobiles, motorcycles, household appliances, instruments, military industry, building materials, decoration, light industry and daily use. It has gradually replaced conventional surface coating technology and has become the most important in the world today. One of the coating technology methods. [0003] The current electrophoretic coating technology mainly adopts the ordinary electrophoretic treatment me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/12C25D13/14
CPCC25D13/14
Inventor 李再亮
Owner 李再亮
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