What are the quality indicators of electroplating? What are the advanced testing methods and testing

Coating thickness, corrosion resistance, high temperature resistance, low temperature resistance, high and low temperature alternating resistance, impact resistance, etc., depending on the actual application of the product. No matter how advanced the testing methods and instruments are, the quality cannot be guaranteed, and the quality depends on the process. The test only reflects a condition that the raw rice has been cooked to maturity.

Condition management in the electroplating process, timed fixed-point and fixed-person inspection of relevant parameters.

If the coating is peeled from the bottom layer, pay attention to the pre-treatment, if it is multi-layer plating from the coating, pay attention to the activation before entering the plating tank. The bending method or the grid method is generally used for detection. The detailed method should be checked according to the standard.

Test items. Thickness testing, performance testing, adhesion testing, composition testing, strength testing, porosity testing, adhesion testing, internal stress testing, conductivity testing, hexavalent chromium testing, hardness testing, etc.

Testing criteria. CB 1298-1998 Technical requirements and test methods for friction reduction coating of PB-SN-CU ternary alloys.

CB T 3764-1996 Thickness series and quality requirements for metal plating and chemical covering.

DB35 T 1395-2013 Corrosion Resistance Rating for Water Heads and Flushometers Coated Surface Coating.

GB T 11379-2008 Metal Overlay - Chromium plating for engineering.

GB t Metal Overlay Test Methods for Gold and Gold Alloy Plating Part 6: Determination of Residual Salts.

GB T Metal Overlay Test Methods for Silver and Silver Alloy Plating Part 3: Determination of Residual Salts.

GB T 12332-2008 Metal overlay Nickel plating for engineering.

GB 12333-1990 Metal cladding Copper plating for engineering use.

GB T 12599-2002 Metal overlays—Tin plating—Technical specification and test methods.

GB T 12600-2005 Nickel + chromium plating on plastic with metal overlay.

GB T 13322-1991 Metal Coating Low Hydrogen Brittle Cadmium Titanium Plating.

GB T 13744-1992 Measurement of the thickness of nickel plating layers on magnetic and non-magnetic substrates.

GB T 13913-2008 Metal overlays -- Electroless nickel-phosphorus alloy plating -- Specification and test methods.

GB T 15675-2020 Continuous electroplating of galvanized and zinc-nickel alloy coated steel plates and strips.

GB T 15717-1995 Vacuum Metal Plating Thickness Test Method Resistance Method.

GB T 24514-2009 Zinc-based and/or aluminum-based coatings on steel surfaces Determination of coating quality and chemical composition per unit area Gravimetric method, inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry.

GB T 28485-2012 Coated ornaments -- Determination of nickel release -- Wear and corrosion simulation method.

GB T 29777-2013 Technical specifications for toy plating.

GB T 32484-2016 Case and accessories thereof - Vapor deposition coating.

GB T 31931-2015 Steel plate and steel strip Determination of hexavalent chromium content in zinc and zinc alloy coatings Diphenylcarboyl dihydrazine spectrophotometry.

GB T 31927-2015 Steel plate and steel strip - Determination of lead and cadmium content in zinc-based and aluminum-based coatings - Inductively coupled plasma mass spectrometry.

GB T 34491-2017 Sintered NdFeB surface coating.

How to judge electroplating products, generally speaking, in addition to its unique color and luster, the plating should also be uniform, meticulous, and good adhesion, and no pinholes, stripes, blistering, peeling, burrs, nodules, pitting, scorching, cracking, peeling, falling off, abnormal color or leakage plating are allowed. However, for hanging plating parts, slight defects in the hook are generally allowed. When choosing the reputation of electroplating products, you must choose a regular company, there are many in Central China Electroplating Park, and you must check the qualification certificate reports to judge.

The test items are determined according to the use of the product, mainly divided into the following aspects: 1Plating thickness.

2.Coating wear resistance, hardness 3

Salt spray (oxidation resistance) 4...Environmental test (6-valent chromium ion).

According to different customer needs, it can be summarized as follows:

1. Visual inspection of appearance (surface finish, brightness, etc.);

2. Coating thickness (including the uniformity of the coating in different parts of the workpiece);

3. Torque force detection;

4. Adhesion detection;

5. Neutral salt spray detection;

6. Environmental protection testing of coating.

There are high-precision coating thickness gauges that can inspect the plating layer.

We use the PD-CT2 Plus coating thickness gauge of Zhongke Pudao, this instrument has a very small error, and our 3 microns of electrogalvanization can be detected, and the amount of galvanization can also be measured.

Both magnetic thickness gauges and microscopes can be tested. Do you want to test it?

The Norton K6-C Thickness Gauge is one of the more advanced features at present.

The new technology eddy current probe is adopted, which can not only accurately measure the galvanized layer below 3 microns, but also the nickel plating layer, and a host can be compatible with more than 20 kinds of probes, which is also relatively close to the people.

Plating inspection items:

Thickness group touching, hardness, chemical composition, element content, surface rust point, bonding strength, mercury content, lead content, cadmium content, collapse adhesion strength, porosity, noisy bonding strength, corrosion test, etc.