Effective method for preventing scorching in electroplating process

A technology of electroforming and conductive parts, applied in the direction of electrolysis, electroforming, electrodes, etc., can solve problems affecting corporate reputation and increasing production costs

Inactive Publication Date: 2013-05-08
肖云捷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Product scrapping due to tooth loss, broken teeth, delamination, peeling, cracking and other phenomena accounted for more than 80% of the total unqualified products. The real current density on the surface of the workpiece is too large, which is caused by the "burning" phenomenon. This is the root cause of the product qualification rate hovering around 70%. This not only increases the production cost, but also affects the reputation of the company. Therefore, it is necessary to find a way to solve

Method used

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  • Effective method for preventing scorching in electroplating process
  • Effective method for preventing scorching in electroplating process
  • Effective method for preventing scorching in electroplating process

Examples

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Embodiment Construction

[0021] The implementation takes the electroformed diamond geological drill bit as an example, such as figure 1 As shown, the electroforming solution (12) is filled in the electroplating tank (1), and the basic formula is as follows:

[0022] NiSO 4 ·7H 2 O 180—350g / l

[0023] NiCL 2 ·6H 2 O 10—55g / l

[0024] CoSO 4 ·7H 2 O 3—30g / l

[0025] h 3 BO 3 15—40g / l

[0026] Softener 0—40g / l

[0027] Additives a little

[0028] Temperature 30-56 degrees

[0029] PH value 3.2 - 5.8

[0030] Solution stirring and solution circulation Yes.

[0031] This formula uses nickel-cobalt alloy as the matrix material of the geological drill bit. An anode (2) is provided in the electroplating tank (1). The anode (2) is connected to the positive pole of the rectifier power supply (10). 6), the cathode (6) is connected to the negative pole of the rectified power supply (10).

[0032] The steel body of the geological drill bit (6) insulates the part that does not need to be ...

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Abstract

The invention provides an effective method for preventing scorching in an electroplating process. The method is characterized in that an auxiliary electrode is used in the electroforming process, and the auxiliary electrode is in parallel with a workpiece to be plated and is connected with the cathode of a rectification power supply through a copper bar and a lead in the sanding and fixing initial-stage-thickening operation of the workpiece, so the auxiliary cathode effectively shares a current, thereby the surface of the workpiece is prevented from scorching, phenomena comprising tooth breakage, tooth loss, tooth removal, delamination, cracking and peeling are fundamentally solved, the product qualification rate is improved by 27%, and the production cost is reduced by above 14%.

Description

technical field [0001] The patent of the invention relates to the production field of electroforming (plating) superhard material products and wear-resistant composite layer electroforming (plating), especially related to electroforming diamond geological drill bits, electroforming (plating) ordinary diamond products and electroforming wear-resistant accessories Production. Background technique [0002] In the electroforming production process of diamond geological drill bits, ordinary diamond products, and wear-resistant parts with superhard material particles-metal composite coating structure, the products often have tooth loss, broken teeth, delamination, peeling, Cracking and other phenomena and scrapped. Product scrapping due to tooth loss, broken teeth, delamination, peeling, cracking and other phenomena accounted for more than 80% of the total unqualified products. The real current density on the surface of the workpiece is too large, which is caused by the "burning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/00C25D17/10
Inventor 不公告发明人
Owner 肖云捷
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