New energy automobile battery integrated part insert electroplating process

A new energy vehicle and electroplating technology, applied in the field of auto parts, can solve the problems of inability to meet high standards and high requirements, poor cleaning effect and electroplating effect, and high equipment requirements, and achieve easy operation, excellent corrosion resistance, and coating adhesion. Strong effect

Inactive Publication Date: 2020-12-04
NINGBO HUASHUO MOLDING & MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing new energy vehicle battery one-piece embedded electroplating process (see the attached manual for details) figure 2 ) has high requirements on equipment, relatively complicated process and high cost, and the electroplating cleaning process is cleaned with room temperature water, the cleaning effect and electroplating effect are relatively poor, usually there will be different degrees of white rust spots appearing in 24 hours of neutral salt spray test , the peeling area of ​​the edge of the incision in the Baige test exceeds 15%, which cannot meet the high standards and high requirements of the new energy battery integrated parts for the inserts

Method used

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  • New energy automobile battery integrated part insert electroplating process
  • New energy automobile battery integrated part insert electroplating process
  • New energy automobile battery integrated part insert electroplating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, the new energy vehicle battery integral part insert electroplating process includes the following steps:

[0026] S1, pretreatment, in order to hang the inserts, degreasing, cleaning, pickling, re-cleaning, neutralization, until the surface grease of the inserts is removed; the pickling solution is composed of hydrochloric acid, corrosion inhibitor LAN826, deionized water The concentration of composition is 6% solution;

[0027] S2, electroplating, electroplating the pretreated insert in the electroplating solution, the electroplating solution used includes 260g / L nickel sulfate, 34g / L nickel chloride, 40g / L boric acid, 8ml / L open cylinder 200Mu, 0.05ml / L main light agent BNB-95B, 0.05ml / L auxiliary light agent BNB-95A, 0.15ml / L wetting agent W-1, the rest of deionized water; adjust the pH of the plating solution 4, the temperature is 50°C, the insert is used as the cathode, and the current density is controlled to be 15A / dm 2 , the reaction time i...

Embodiment 2

[0031] In this embodiment, the new energy vehicle battery integral part insert electroplating process includes the following steps:

[0032] S1, pretreatment, in order to hang the inserts, degreasing, cleaning, pickling, re-cleaning, neutralization, until the surface grease of the inserts is removed; the pickling solution is composed of hydrochloric acid, corrosion inhibitor LAN826, deionized water The concentration of composition is 7% solution;

[0033] S2, electroplating, the pretreated insert is electroplated in the electroplating solution, the electroplating solution used includes nickel sulfate 270g / L, nickel chloride 38g / L, boric acid 42g / L, 8.5ml / L open Tank agent 200Mu, 0.08ml / L main light agent BNB-95B, 0.04ml / L auxiliary light agent BNB-95A, 0.17ml / L wetting agent W-1, the rest of deionized water; adjust the plating solution The pH is 4.3, the temperature is 52°C, the insert is used as the cathode, and the controlled current density is 18A / dm 2 , the reaction time...

Embodiment 3

[0037] In this embodiment, the new energy vehicle battery integral part insert electroplating process includes the following steps:

[0038] S1, pretreatment, in order to hang the inserts, degreasing, cleaning, pickling, re-cleaning, neutralization, until the surface grease of the inserts is removed; the pickling solution is composed of hydrochloric acid, corrosion inhibitor LAN826, deionized water The concentration of composition is 8% solution;

[0039] S2, electroplating, electroplating the pretreated insert in the electroplating solution, the electroplating solution used includes 280g / L nickel sulfate, 40g / L nickel chloride, 45g / L boric acid, 9ml / L open cylinder 200Mu, 0.09ml / L main light agent BNB-95B, 0.06ml / L auxiliary light agent BNB-95A, 0.2ml / L wetting agent W-1, the rest of deionized water; adjust the pH of the plating solution The temperature is 4.5, the temperature is 55°C, the insert is used as the cathode, and the controlled current density is 24A / dm 2 , the r...

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Abstract

The invention relates to a new energy automobile battery integrated part insert electroplating process, and belongs to the technical field of automobile parts. An insert is subjected to specific pre-treatment, then electroplating conditions are adopted, electroplating liquid is prepared from 260-300 g / L of nickel sulfate, 34-45 g / L of nickel chloride, 40-50 g / L of boric acid, 8-10 ml / L of a cylinder opening agent, 0.1-0.2 ml / L of a brightening agent and the balance deionized water, the pH of the electroplating liquid is adjusted to be 4-5, the temperature is 50-60 DEG C, and the insert servesas a cathode, the introduced current density is controlled to be 15-30 A / dm<2>, the reaction time is 10-40 min, the insert is electroplated, finally, a plating layer is subjected to activation and hotwater cleaning, the obtained insert product is excellent in corrosion resistance, no white rust spot exists in 72 h of a 35 DEG C 50 g / L NaCl neutral salt spray test, and the stripping area of the edge of a hundred-grid test notch is smaller than 5% and at least reaches the ASTM grade 5B.

Description

technical field [0001] The invention relates to an insert electroplating process for an integral part of a new energy automobile battery, belonging to the technical field of automobile parts. Background technique [0002] Inserts are added to the mold before the product is formed to make it integrated with the injection molded part during the injection molding process. Inserts play an important role as connecting parts to connect core components. Once a problem occurs, the service life of the product will be greatly reduced or even unusable. Due to the harsh working environment of the new energy battery integrated parts, higher requirements are put forward for the inserts used in the integrated parts, especially the corrosion resistance. [0003] Electroplating uses the principle of electrolysis to plate a thin layer of other metals or alloys on some metal surfaces, so that a layer of metal film is attached to the surface of metal or other material parts to prevent metal ox...

Claims

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Application Information

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IPC IPC(8): C25D3/12C25D7/00C25D5/34C25D5/48
CPCC25D3/12C25D5/34C25D5/48C25D7/00
Inventor王洪彪陈发明旷鑫文沈善忠蔡朝新张鹏傅兆波徐纪波韩建军张军
OwnerNINGBO HUASHUO MOLDING & MACHINE