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Processing method of U-shaped through channels

A processing method and channel technology, applied in the direction of electrolysis, electroforming, etc., to achieve the effect of avoiding subsequent processing, improving production efficiency and production cost

Inactive Publication Date: 2014-04-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The invention provides a processing method for a U-shaped through-channel to solve the processing problem of a special-shaped complex through-channel, improve the structural performance, and provide a reference for the design of a special-shaped structure

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Embodiment Construction

[0029] The method of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Please refer to Figure 1 to Figure 4 As shown, a workpiece with channels formed by grooves is composed of a base body 1 and an electroformed covering layer 4 . The base body 1 is generally made of copper, and the base body 1 is milled and turned to form grooves 2 or its array structure on the outer surface, so that its cross-section has the same groove structure as the channel cross-section. The width of the groove 2 is generally about 2 mm, and the thickness of the entire substrate 1 is 8-10 mm; the electroformed covering layer 4 is electroformed on the substrate 1, and the metal deposition layer is formed by electrodeposition, and the thickness is generally 3-5 mm. . The material of the electroforming covering layer 4 is nickel.

[0031] Please refer to Figure 1 to Figure 3 and combine Figure 4 to Figure 5 As shown, the processing method ...

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Abstract

The invention discloses a processing method of U-shaped through channels, which is applied to the through channels which are difficult to process by conventional processing or extremely high in processing cost, belonging to the special processing field. U-shaped through channels with different sections and dimensions are constructed by a mechanically processed base body and a covering layer manufactured by electro-casting. The processing method comprises the following steps: firstly, processing out grooves with sections the same as those of the channels on a corresponding dimension position of the base body, filling filler capable of being removed in the grooves; then, electro-casting a metal covering layer with a certain thickness on the base body by adopting an electro-casting technology; and finally, removing the filler to form through channels. The processing method disclosed by the invention can construct a channel array by one step without being limited by channel section shapes and travelling paths as well as arrangement direction and quantity of channels. The processing method disclosed by the invention further can be used for directly electro-casting and forming holes on an electro-casting structural piece.

Description

technical field [0001] The invention relates to a processing method for a U-shaped through channel, which belongs to the field of special processing. Background technique [0002] Compared with traditional machining methods, electroforming has the following advantages: (1) It has extremely high replication ability and repeatability; (2) The shape and size range of formable parts is wide; (3) The material properties of electroformed parts are controllable ; (4) Low production cost. At present, it is the most effective process to manufacture the structure of the liquid rocket engine thrust chamber by electroforming, and the electroforming process technology is widely used in the manufacture of many industrial products such as aerospace, automobile, and electrical appliances. [0003] The U-shaped channel structure is widely used in heat exchange structures of aerospace, automobile engines, refrigeration equipment, etc. The main manufacturing method of its structure mainly re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/00
Inventor 朱增伟任建华沈春健朱荻
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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