Some standard content:
ICS25.220.20
No.:16892-·2005
Standard of the Machinery Industry of the People's Republic of China
JB/T7508-2005
Replaces JB/r75081994
Technical conditions of addition agent for bright nickel plating2005-09-23 issued
2006-02-01 implementation
National Development and Reform Commission of the People's Republic of China issued foreword
Selected referenced documents
Technical requirements
Water spring silk
Electroplating performance,
Anti-test method
Water solubility test
Convex plating performance test
Inspection regulations and measurements
Marking, packaging and storage and transportation,
Electroplating performance technical requirements
JH/T75082005
JB/T7508—2005
This standard is a revision of the technical conditions for additives in JB/7501 State 4 light-filled silver mirror paint. Compared with JB/T7503-19941, this standard has ten major changes as follows. - Supplemented the following times:
- Supplemented the preface:
...: Modified some of the used standards
- Improved the technical indicators of the test, deep drinking capacity, separation capacity, current control efficiency and leveling property: : · Modified some contents in Chapter 1 (test for secretion). The standard was proposed by China Analytical Machinery Industry Federation. This standard was approved by the National Committee for Standardization of Metallurgical Materials and Metallurgical Materials. The originating units of this standard: Bangzhou Bada Surface Engineering Technology Research Institute, Guangzhou Faxin Chemical Co., Ltd., Guangzhou Dazhi Chemical Co., Ltd., Wuhan Fengfan Surface Engineering Co., Ltd., Textile Industry Surface and Covering Product Quality Supervision and Inspection Center. The originating persons of this standard: Jiu Chang, Chen Zhenkun, Yang Jianxiong, Cai Zhihua, Wang Zhijun. The version of the standard replaced by this standard is: HB/F7508-1994.
: Specifications for Bright Nickel Plating Additives
JB 7508-2005
Standard Specifications for Bright Nickel Plating Additives The general principles of technical requirements, test methods, test rules, marking, inspection and operation of bright nickel plating additives are stipulated in this standard: This standard applies to neutral bright dye additives for electroplating nickel-fast alloy additives for electroplating shells. This standard can also be referred to. 2 Normative References
The following documents have become technical standards through the history of this standard. For dated references, all subsequent amendments (excluding errors) or revisions are not applicable to this standard. However, all research and development units that have reached an agreement based on the technical standard are encouraged to use the latest version of these documents. For any outdated referenced documents, please refer to the latest version of this standard. CE/T19 Packaging and transportation pictorial mark (GB/T191-2U00, cgVISO780:1997) G/T619 Chemical reagent sampling and acceptance rules GB/T5270 Metal content test method on substrate (GT5270-1985, e9VIS028191980:
GB/F15821
Gold coverage extended metal bioassay method (GRT15821-1995, oqV1SO8401:1986) Batumi solution test method requires a test
JB/T 7704.1
T/T7704.2—1995 Electroplating drop test method, mold removal and cover test method, 04.3 and forging test method, closed-electrode current efficiency test, other plating depth test method, dispersion test method, JB/T77(K.4
JB/T 7704.5
3 Water resistance
3.1 Appearance
Solution test method
The additive should be transparent or semi-transparent liquid, precipitated and decomposed completely in water. 3.2 Water solubility
33 Electric shock performance
The electrical properties of the additive must meet the technical requirements of Table 1. Table 1 Electrical performance requirements
Plantation test
Thick plating ability
Pre-plating ability
Terminal electric shock performance Rate
layer gloss ·
training strength
read additive consumption
, the light screening value is expressed as the relative position,
performance requirements
2--15%
5%0 (60" angle)
there is no separation between the bond layer and the matrix, the core layer and the mold layer, which meets the product requirements
JB/T75082005
4 Test method
4.1 Appearance
at 252℃, the amount of special additives is calculated Put it into a colorless transparent container and observe it under light. If the result meets the requirements of 3., it is qualified.
4.2 Water solubility test
Take 5m of the expansion agent and inject it into a colorless transparent glass container, dilute it to 50% with water or deionized water, mix it evenly, and if the result meets the requirements of 3.2, it is qualified.
4.3 Electroplating performance test
The chemical reagent used in the electroplating performance test is a chemical reagent. The separator used is electrolytic plate with a purity greater than or equal to 99.9%, and the test solution is nickel sulfate. 300g of tin oxide, 50% tin oxide, and 40% red tin oxide are weighed and prepared with distilled water or deionized water. According to the content of the graded product specification, dilute the additives with water and add them to the plating solution. Use a sulfuric acid solution with a mass fraction of % or a sodium hydroxide solution with a mass fraction of % to measure the pH of the plating solution to the specified value. 4.3.1 Aier test
According to the method specified in JB/T7704.1, at a current of 0.5A, the test piece should be free of full contact when electroplating for 5mil; at a current of 2A, the coating on the test piece should show no light decay. The qualified ones meet the requirements: 4.3.2 Determination of deep plating ability
Visual test according to the inner hole method (Figure 3C) specified in JB/T7704.2-1995 4.3.3 Determination of ability
Test according to the near and far cathode method specified in JB/T 704.4. In the test, the K value should be selected as 3. 4.3.4 Determination of cathode current efficiency
Test according to the method specified in JB/T 704.3. In the test, the cathode current density of the plating solution should be selected as 2A/d㎡. 4.3.5 Overall
Test according to the micro-sine method specified in JB/T 7704.5. 4.3.6 Plating waist gloss determination
4.3.6.1 Test instrument
a? Gloss meter:
6) Laboratory electroplating equipment (rectifier, plating, timer, etc.), 4.3.6.2 Test specimen
Use D.5rntm1mm/thick cold wheel steel plate to make a 100hm×50tun test piece. After dense polishing, its surface roughness (g) is 0.41um=R≤0.63um, and the gloss value is 350~-400. After the test piece is treated with strip gauge electroplating before, according to the electroplating process conditions specified by the additive product, the nickel layer with a thickness of (10±2)hm is used as the test specimen. 4.3.6.3. Determination
Use a calibrated beam with an angle of 60” to measure points at the upper, middle and lower parts of one side of the test fence, and take the arithmetic mean as the measurement result.wwW.bzxz.Net
4.3.7 Determination of chain layer ductility
Measure according to the method (cylindrical center rail variable belt) specified in GB/T15821. 4.3.8 Chain layer bonding strength test
Use a 0.5m~1rum thick copper plate (H62-Y) or a carrier steel plate to make a 1mm×5 Ukmm specification test piece, after the pre-treatment of the standard electroplating, according to the electroplating process specified by the additive product, electroplating (15 ± 2) μm thick nickel layer as the test piece, and then arbitrarily select two methods for testing according to the provisions of GBT5270. 4.3.9 Determination of additive consumption
4.3.9.1 Test equipment
a) Experimental electroplating equipment (rectifier, forging, etc.): b) DC installation hour meter.
4.3.9.2 Test sample
JB/T 7508 -2005
0.5u1nu thick yellow steel plate (H62-Y) or purple plate micro-cut t00mm×5umm test piece, after polishing, cut the material particle size (R.) to 0.41μmR0.63μm, optical value 350~400, after conventional electrochemical pre-treatment, as the sample: 4.3.9.3 Test
Prepare 1 drop of liquid according to the product instructions, connect the hour meter and the current monitor, put the anode into the constant temperature, burn the short liquid to the appropriate temperature specified by the additive product, stir the test sample when it is in use, activate the newly prepared sugar solution, check and pass the current according to the current specified by the additive product, test 1Ah. Replace the sample, pass the current according to the current specified by the additive product, take out the sample after pre-testing IA, wash the sample with water and dry it, and use the optical integrity of this sample as the comparison basis. Then take a sample after each 0.5Ah--1Ah of power on and compare it with the standard sample to see if the coating is glossy. When the coating shows slight gloss loss or local fogging, the pre-screening ends and the additive is added according to the specified addition order. The pre-screening method is still used for power on. Compare the sample with the silicon sample. When slight gloss loss or local fogging occurs, record the ampere-hours after the supplementary addition and the amount of additive added, and calculate the amount of additive consumed per ampere-hour (i.e. mk): perform the test at least three times according to the above test method, and take the arithmetic mean of the test as the test result. Note: The test process should always be kept within the positive process conditions. Replace the sample from time to time during the test. 5 Inspection rules
5.1 Inspection samples shall be sampled in accordance with GB/T619, and the total amount of samples for each batch shall be no less than 500mL. 5.2 If one of the frequency indicators in the inspection result does not meet the technical requirements of this standard, three additional samples shall be added for re-inspection. If it still does not meet the requirements, the product is unqualified.
5.3 The shelf life of additives is generally 4000. For additives with special or special time requirements, it shall be indicated on the product label. 6 Labeling, packaging and storage and transportation|| tt||6.1 Marking
Additive products should have product, production order name, product number and batch number, net weight, production date, expiration date, inspector's abbreviation and other marks on the packaging. Transportation diagram should follow GR 191 reverse marking: 6.2 Packaging
Additive products should be packaged in a safe and appropriate manner. They must be packaged in an outer package. 6.3 Storage and Transportation
Additive products should be placed in a cool and dry place to prevent contamination by other products. They should be lightly loaded and handled during transportation to prevent heavy pressure, storage, exposure to the sun and rain.
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