CN103060868A

CN103060868A - Battery case nickel-plating fault treatment process

Info

Publication number: CN103060868A
Application number: CN2013100256545A
Authority: CN
Inventors: 宋梅玲
Original assignee: ZHENG YUAN TECHNOLOGY POWER SUPPLY MATERIAL Co Ltd
Current assignee: Xinxiang Zhengyuan Electronic Materials Co. Ltd.
Priority date: 2013-01-21
Filing date: 2013-01-21
Publication date: 2013-04-24
Anticipated expiration: 2033-01-21
Also published as: CN103060868B

Abstract

The invention belongs to the technical field of battery case nickel plating, and discloses a battery case nickel-plating fault treatment process. The treatment process comprises the following steps: washing a battery cell by using tap water for twice, scouring and activating; washing with de-ionized water after removing oil on the battery cell orderly, wherein a lower trough has burst fault before being electroplated; and after treating the fault, continuing the normal electroplating, orderly washing by using the de-ionized water for three times after outputting the battery case, and performing the subsequent treatment. The treatment process is characterized in that the lower trough has burst fault before being electroplated, after the fault is treated, the battery case is firstly output to be washed by the de-ionized water for three times, each time is 20-60 seconds, then the alkali is added for neutralizing, and then the de-ionized water is used for washing for 20-60 seconds; then the tap water washing is returned for twice, scouring and activating, and washing with the de-ionized water before electroplating are performed, wherein a low-foaming wetting agent is added in a scouring solution when the scouring and activating are performed, then the lower trough is electroplated according to the normal process, then the battery case is normally output, and the subsequent treatment and normal operation are performed. The finished product treated by the process provided by the invention is good in appearance and good in combination after being checked, various feature characteristics such as salt mist and blue point and the like are accordant with the normal index.

Description

Battery case barrel nickel plating fault handling technique

Technical field

The invention belongs to battery case barrel nickel plating technical field, particularly a kind of battery case barrel nickel plating fault handling technique.

Background technology

At present, when the battery case barrel nickel plating normally moves, its technical process is as shown in Figure 1: at first clean each 20 ~ 60s through the twice tap water after the battery case oil removing, then at reagent hydrochloric acid (the HCL content of 20 ~ 40ml/l, % 36～38) acid-wash activation certain hour (2A in the solution, the following battery case 4 ~ 6min of 3A and 3A, the SC type, the C type, the D type, F type battery case 8 ~ 10min), again through washed with de-ionized water 5 ~ 12s, lower groove is electroplated (electroplate liquid: 200-220g/L single nickel salt, the 40-70g/L nickelous chloride, 40-50g/L boric acid, pH value 4.4-4.6, the acidic solution of temperature 50-55 degree, add that 0.1ml/l rolls bright nickel plating 998-A brightening agent and 3 ~ 5ml/l rolls the bright nickel plating softening agent) 3 hours, go out part through each 20 ~ 60s of three road washed with de-ionized water, get product finally by aftertreatment.Postprocessing working procedures is as shown in Figure 3: first bleaching 4min in the nitration mixture (citric acid and tartrate mass ratio 9:1) of 10g/L, and the twice tap water cleans respectively 20 ~ 60s; Through the chromic acid passivation 4min of 20g/L, three road tap water clean each 20 ~ 60s again; Through the sodium hydroxide solution neutralizing treatment 4min of 10 ~ 20g/L, three road washed with de-ionized water are 20 ~ 60s respectively again; Use again 1 ~ 20ml/L SG6006A encapsulant to roll and seal 1 ~ 3min, each 20 ~ 60s of three road washed with de-ionized water; Finally by water dumping, oven dry, cooling, packing).Wherein, the deionized water that relates in the whole technological process all refers to the deionized water that 20US/CM is following.

But, having many catastrophic failures in the electroplating process, the damage of power failure, electrical equipment facility is exactly one of them.If this moment, battery case just descended coating bath by chance, general way is then electroplated (Fig. 1) by normal process after waiting for exactly fault handling more at present.So, will cause the serious consequence of " coating comes off ", product can only be scrapped processing.Analyze its reason, be because battery case behind acid-wash activation, not in time plating, pollution is seriously flooded by liquid in its surface, just as having one deck barrier film, can't be bonded together very securely in the middle of the Direct Electroplating again behind the certain interval of time, nickel metal and cathode base, cause bonding force bad, the plating phenomenon occurs falling.

Summary of the invention

Purpose of the present invention aims to provide a kind of finished product without bad order and the good battery case barrel nickel plating fault handling technique of bonding force.

For achieving the above object, the technical scheme taked of the present invention is as follows:

Battery case barrel nickel plating fault handling technique, pass through successively the cleaning of twice tap water, acid-wash activation, washed with de-ionized water after the battery case oil removing, lower groove is not yet electroplated and catastrophic failure occurred, after pending fault is processed, then normal plating, get final product through three road washed with de-ionized water, aftertreatment successively again after going out part, its special feature is: lower groove is not yet electroplated and catastrophic failure occurred, after pending fault is processed, at first go out part by each 20 ~ 60s of three road washed with de-ionized water, then alkali neutralizing treatment is again through washed with de-ionized water 20 ~ 60s; Then return electroplate before the cleaning of twice tap water, acid-wash activation, washed with de-ionized water, wherein in Acidwash solution, add low-foam wetting agents during acid-wash activation, normally electroplate subsequently, go out part to aftertreatment and normally carry out.

During acid-wash activation, the Acidwash solution of employing is the reagent hydrochloric acid solution of 20 ~ 40ml/l; The alkali neutralizing treatment refers to: 9 ~ 10r/min rotates 1 ~ 2min in the sodium hydroxide solution of mass concentration 10 ~ 20g/l.

In Acidwash solution, add the low-foam wetting agents that accounts for its quality 2/10000ths to 5/10000ths.Among the present invention, commercial low-foam wetting agents all can.

The present invention has two technical essentials: the one, and the workpiece after breaking down out will carry out the alkali neutralizing treatment from coating bath, guarantees workpiece surface noresidue liquid, cleans up; The 2nd, acid-wash activation will add low-foam wetting agents, plays inhibition and fully wetting action.And technical solution of the present invention is not yet to begin behind the coating bath to electroplate under battery case catastrophic failure just occurs, after pending fault is processed, no longer electroplate, and battery case is directly hung out plating tank, improve processing according to above-mentioned two technical essentials, just then normally electroplate after improvement is finished dealing with.

Through check, the finished product after process modification of the present invention is processed is without bad order, and bonding force is good, and the various nature and characteristics such as salt fog, Bluepoint all meet normal index.

Description of drawings

Fig. 1: battery case barrel nickel plating normal process and existing fault handling process flow sheet.

Fig. 2: battery case barrel nickel plating fault handling process flow sheet of the present invention.

Fig. 3: postprocessing working procedures schema.

Embodiment

When battery case barrel nickel plating such as the operation of Fig. 1 normal process, at first clean each 20s through the twice tap water after the battery case oil removing, then at reagent hydrochloric acid (the HCL content of 30ml/l, quality % 36～38) acid-wash activation certain hour (2A in the solution, the following battery case 6min of 3A and 3A, the SC type, the C type, the D type, F type battery case 10min), again through washed with de-ionized water 10s, lower groove is electroplated (electroplate liquid: 210g/L single nickel salt, the 55g/L nickelous chloride, 48g/L boric acid, pH value 4.5, the acidic solution of temperature 50 degree, add that 0.1ml/l rolls bright nickel plating 998-A brightening agent and 4ml/l rolls the bright nickel plating softening agent) 3 hours, go out part through three each 20s of road washed with de-ionized water, get product finally by aftertreatment.Postprocessing working procedures is as shown in Figure 3: bleach first 4min in the nitration mixture (citric acid and tartrate mass ratio 9:1) of 10g/L, the twice tap water cleans each 20s; Through the chromic acid passivation 4min of 20g/L, three road tap water clean each 20s again; Again through the sodium hydroxide solution neutralizing treatment 4min of 10g/L, three each 20s of road washed with de-ionized water; Roll with 10ml/L SG6006A encapsulant again and seal 2min, three each 20s of road washed with de-ionized water; Finally by water dumping 10min, oven dry 10min, cooling, packing).Wherein, the deionized water that relates in the whole technological process all refers to the deionized water that 20US/CM is following.

But in electroplating process of the present invention, groove is not yet electroplated when catastrophic failure occurring under the battery case, after pending fault is processed, its technique is then undertaken by shown in Figure 2: no longer electroplate and at first battery case is hung out from coating bath, through three each 20s of road washed with de-ionized water, then in the sodium hydroxide solution of mass concentration 10g/l, rotate 1min with 10r/min and carry out the assurance of alkali neutralizing treatment the removing of battery case surfaces externally and internally residual liquid totally, again through washed with de-ionized water 20s; Then return and electroplate front twice washed with de-ionized water 20s, in the reagent hydrochloric acid solution of mass concentration 30ml/l, add subsequently 2/10000ths low-foam wetting agents TC-EHS(and be purchased from Zhangjagang City good friend Fine Chemical Co., Ltd) carry out acid-wash activation, again behind washed with de-ionized water 10s, then electroplate by groove under the normal process, normally go out part, normally carry out to aftertreatment.

Claims

1. battery case barrel nickel plating fault handling technique, pass through successively the cleaning of twice tap water, acid-wash activation, washed with de-ionized water after the battery case oil removing, lower groove is not yet electroplated and catastrophic failure occurred, after pending fault is processed, then normal plating, get final product through three road washed with de-ionized water, aftertreatment successively again after going out part, it is characterized in that: lower groove is not yet electroplated and catastrophic failure occurred, after pending fault is processed, at first go out part through each 20 ~ 60s of three road washed with de-ionized water, then alkali neutralizing treatment is again through washed with de-ionized water 20 ~ 60s; Then return electroplate before the cleaning of twice tap water, acid-wash activation, washed with de-ionized water, wherein in Acidwash solution, add low-foam wetting agents during acid-wash activation, normally electroplate subsequently, go out part to aftertreatment and normally carry out.

2. battery case barrel nickel plating fault handling technique as claimed in claim 1, it is characterized in that: during acid-wash activation, the Acidwash solution of employing is the reagent hydrochloric acid solution of 20 ~ 40ml/l; The alkali neutralizing treatment refers to: 9 ~ 10r/min rotates 1 ~ 2min in the sodium hydroxide solution of mass concentration 10 ~ 20g/l.

3. battery case barrel nickel plating fault handling technique as claimed in claim 1 or 2 is characterized in that: add the low-foam wetting agents that accounts for its quality 2/10000ths to 5/10000ths in Acidwash solution.