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Method of machining bellows by non-metal core electrodeposition

A bellows and electrodeposition technology, which is applied in the direction of electroforming and electrolysis, can solve the problems of difficult large-scale production, high cost and difficulty of electrodeposited bellows

Inactive Publication Date: 2007-08-15
SHENYANG ACAD OF INSTR SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aluminum and aluminum alloys are one-time mandrels. After the electrodeposition layer is formed on the surface of the mandrel, the whole mandrel must be corroded. When making the mandrel, machining is difficult, which directly leads to the high cost of the electro-deposited bellows.
Restricted by this process, it is difficult to achieve large-scale production, which also affects the wider application of electrodeposited bellows

Method used

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  • Method of machining bellows by non-metal core electrodeposition
  • Method of machining bellows by non-metal core electrodeposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The technological process of processing bellows with mandrel electrodeposited nickel of conductive plastic:

[0017] 1.1. Alkaline oil removal

[0018] Process specification:

[0019] Sodium hydroxide 50~80g / L

[0020] Trisodium Phosphate 30g / L

[0021] Trisodium Carbonate 15g / L

[0022] Temperature 40~45℃

[0023] Time 30~40 minutes

[0024] 1.2. Pickling

[0025] Soak in a 1:1 solution of hydrochloric acid and water for 6 to 8 minutes.

[0026] 1.3. Electrodeposition of nickel

[0027] Process specification:

[0028] Sulfamic acid Ni 450~650g / l

[0029] NiCl 2 ·7H 2 O 5~15g / l

[0030] Boric acid 3045g / l

[0031] Sodium dodecyl sulfate 0.1~0.2g / l, the rest are deionized water.

[0032] PH 3.5~4.5

[0033] Temperature 55~60℃

[0034] 1.4. Turned end

[0035] The deposited bellows workpiece is radially truncated on the lathe according to the required size, and then the metal coating on the surface of the core process hole is turned off to expose the plas...

Embodiment 2

[0044] Mandrels made of ordinary non-metallic materials must be metallized on the surface of the mandrel before electrodeposition. The metallization pretreatment can choose vacuum evaporation process or electroless plating process. Vacuum evaporation requires special equipment to complete, therefore, the present invention adopts the method of electroless nickel plating to metallize the surface of the core mold. The specific process is as follows:

[0045] 2.1. Degreasing: Usually, three methods of degreasing with organic solvent, alkaline degreasing and acid degreasing can be used. In production, depending on the oil contamination on the surface of the workpiece, one of the methods can be selected. It is also possible to use an organic solvent to remove oil first, and then perform alkaline or acid oil removal.

[0046] Alkaline degreasing is suitable for most plastics, and the degreasing effect is good. In the present invention, alkaline degreasing is adopted, and the formul...

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Abstract

The invention discloses a processing method of accordion pipe with nonmetallic core electrodeposition, which comprises the following steps: including conductive plastics, plastic, wax work and glass; adopting mold injection, injection moulding one-shot forming craft; choosing common plastic, conductive plastics and composite conductive plastics as core material; designing and producing core mold; producing core; washing the core; electrodepositing metal; forming; turning the end; demoulding; washing; testing; getting the product. This craft can drop the cost and increase efficiency, which can meet the need of mass production.

Description

technical field [0001] The invention relates to metal electrodeposition, non-metal electroless plating and electroplating methods for manufacturing metal bellows. Background technique [0002] Electrodeposited bellows are also called electroformed (or electroformed) bellows. It is a metal bellows made by electrodepositing an appropriate thickness of metal material on a mandrel with the inner shape and structure of the bellows, and then removing the inner mandrel. The basic principle of manufacturing electrodeposited bellows is basically the same as that of electroplating or electroforming process, but there are also obvious differences: electroplating requires the coating to be firmly combined with the substrate, and the coating has protective and decorative functions; when manufacturing electrodeposited bellows, the electrodeposited layer and the core The mold is to be separated, and the electrodeposited layer is finally formed into a single finished structural part. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/02C25D1/10
Inventor 肖跃军邱广涛刘谦林国栋刘继文隋捷
Owner SHENYANG ACAD OF INSTR SCI