Chrome plating production line

1, Chrome plating production line proglgue:

Copper alloy with good features of corrosion resistance, excellent heat conductivity, excellent plasticity and certain mechanical strength, etc., where widely applied in the industrial field. Chrome plated copper alloy surfaces can increase hardware parts surface hardness, wear resistance, corrosion resistance and decorative.
However, unskillful technical process operation of brass plating chrome production line, will cause white stripes, spotted, shelling, blistering, poor bonding failure on brass surface, and poor brightness chrome plating: such as the surface of gray, dark, hair spray, etc., then effect the chromic plating layer quality.
Following, we’ll from chromium plating production practices based on brass, beryllium bronze alloy parts, to analyze, summarize the key factors of chrome plated copper alloy, then to improve quality of chrome plating.

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2, Material properties of the copper alloy and chrome plating process analysis and countermeasures:

Main material of brass is copper and zinc alloy, while zinc alloy is easy to dezincification corrosion and cracking, so when brass plating chrome production line in plating pre-treatment, need to prevent zinc dezincification.
HPb59-1 easy cutting brass contains a small amount of lead, in the conventional etching activation, it is difficult to dissolve lead, then often lead to chromium plate layer poor bonding. Copper is a copper alloy in addition to zinc, nickel elements, commonly used are copper tin alloy, as well as phosphor bronze, aluminum bronze, beryllium copper and so on. Beryllium bronze materials with high strength and hardness, and the fatigue limit, elastic limit, wear resistance, corrosion resistance are all very good, but also has heat conductivity, cold-resistant, non-magnetic, by the shock does not produce sparks, etc., so beryllium mostly to be used to manufacture elastic parts or wearable parts. Beryllium copper use copper as base material, containing beryllium: 1.7%~2.5%, and nickel: 0.2% ~ 0.5% and a trace titanium.
As an example QBe1.9 beryllium materials with a wide range of applications. The content of beryllium is 1.8%~2.1%, nickel: 0.2%~0.4%, titanium: 0.1%~ 0.2%, the balance being copper. Beryllium, nickel, titanium are elements of easy to passivation, beryllium bronze surface even in atmosphere air will quickly generate a dense layer of invisible passive film. And beryllium copper materials are generally required by quenching, aging processes such as heat strengthened, even with vacuum heat treatment, then surface oxide film will more denser. If parts of surface with oil, easier to generate grease, stains and so on.
So before chrome plating process, must select the appropriate pre-treatment process, make sure that the surface is in the activated state, to ensure chromium plating quality. Brass, beryllium in short time surface passivation easily when chrome plating energized, and even cause dissolve corrosion, which is the key reason of chrome plated brass quality.

3, Chrome plating production line pre-treatment:

The degreasing process before chrome plating of copper alloy not suitable for dipping alkali solution for a long time.

3.1, Brass parts corrosion activation:

Parts of the surface contain oxide or heavy black oxide film, must be pre-etching.
Temperature: room temperature;
Time: 1 ~ 5 min.
After descaling the pre-etching, to activate the surface by using of light etching.
For surface has smooth finish, minor oxide film parts, after degreasing process the surface oil purification can be fully activated in 10% sulfuric acid solution, then can be carried out for chrome plating operation.

4, Chrome plating equipment for brass:

Chrome plating production line for brass alloy parts using standard chromium plating processes. Copper alloy parts must be charged into baths, general should transmit small step cathode current power, especially for beryllium parts, cathode current density degree from 2 A/dm2 gradually rise to 5 A/dm2. Since cathodic hydrogen evolution, and the new ecological hydrogen atom precipitated with a strong reducing ability, can make the copper alloy surfaces passivation coating in particular beryllium bronze reduction and activation, that is very beneficial to improve the bonding strength of chromium plating equipment.

But be careful, charged into the tank, do not anode anti-plating, can effectively avoid passive film formed on the surface coating then to effect surface bonding force, and also avoid parts surface to dissolve corrosion to affect chrome plating quality.
Can adopt strike current (1.5~2 times compare to the normal current density) strike plating 30-60s, and this is particularly necessary for more complex shape parts.
Then resume normal current density chrome plating. In chrome plating process should always pay attention to the anode and cathode conductive good, should be appropriate to adjust the distance and position between the anode and cathode according to the shape of parts, in order to obtain a uniform layer of chrome, to make sure chrome plating quality.img_0038

Galvanized plating machine

Galvanized plating machine

http://platingmachines.com/plating-rectifier/

Shower hose plating machines

Shower hose plating machines

We know every home need shower hose to take a comfortable shower after you exercise or when you back to home tired from work.

But how we how we choose a good shower hose?
① Check coating color degrees, the good one is brightness consistency and no obvious defect by naked eye.
② Compare coating film adhesion, and contrast detection using physical test.
③ Comparison of various plating thickness: which is thickness of coating copper, nickel, chromium with apparatus measuring.
④ The comparison of coating corrosion resistance: tested by salt spray test machine, while under the same condition, the corrosion resistance test duration more longer, the better the effect of electroplating.shower-hose-plating-machines-s

As we can see, the shower hose plating machines are the key important for shower hose.

Shower hose normally made by stainless steel and the plating processes is based on chrome plating, which as follows (This maybe different based on different products):

Loading——Degreasing——Activation——Rinse——Soak——Rinse——Nuetralization——Water rinse——Acid copper——Rinse——Brightness nickel electro plating——Water rinse——Chromium plating——Drying…….

Stainless steel contains large amount of chromium and nickel, but thin passivation oxides film composed of in the SS surface.
So in general electroplating process of low carbon steel, general by using of degreasing – pickling (activating), since in this plating process can not obtain good electro plating adhesiveness, thus in stainless steel plating, in order to remove film completely, and to prevent the regeneration of the passive film, must need an activation process.

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If you choose us, we could help you solve every detail on shower hose plating.

Automatic anodizing plant

Anodizing equipment

Anodizing equipment

Anodizing machine

Anodizing machine

Anodizing plant water chiller

Anodizing plant water chiller

Anodizing machine motor-generator set

Anodizing machine motor-generator set

Gantry type barrel electroplating machinery

Gantry type barrel electroplating machinery

Gantry type barrel electroplating machinery series automatic production line is applied to hardware metal parts barrel plating producing. Readily for transforming process and plating time. The main machine, uses imported motors with brake. Therefore, has advantages of smooth running, reliable brakes, less shaking, coupled with PLC program control. Has feature of high degree of automation. Screen displayed and controlled by touch-screens. It can transform any process and procedures easily. Then can fit different parts electroplating and time requirements.

Gantry type barrel electroplating machinery main parameters:

Output cycle: 3 minutes or more/hanging adjustable;
Maximum plating workpiece: Can be designed according to customer demands;
Working conditions: continuous production for 24 hours;
Maximum lifting weight: could be designed according to users’ end product.
Suitable for galvanized, nickel, tin, and other electroplating.
Gantry type barrel electroplating machinery (automatic barrel plating line) is according to a certain electroplating processes that combine the plating tank, electroplating enhance conveyance device, electrical control devices, power equipment, filtration equipment, testing equipment, heating and cooling equipment, air agitation equipment portfolio as a whole, through the mechanical and electrical installation to automatic fulfill the electroplating whole process, which is high production efficiency, and stable product quality.

Gantry type barrel electroplating machinery

Gantry type barrel electroplating machinery

Plating machine

Plating machine supplier introduction:

Gangmu machinery is a professional plating machine supplier of electroplating equipment manufacturing, with years resource of plating on-site technical control and equipment design experience, and keeping learning advanced design concept, coupled with the tireless efforts of our staff, then developed and produced various types of high quality and stable products, to ensure our customers with a hardware guarantee. We would like to communicate with our customers, that integrate of all our technology and intelligence according with your needs, to pursuit the best value for our customers. We guarantee that customers will continue to provide new value from our continuous development.

Plating machine philosophy:

Company uphold the quality of survival, innovation and development of business purposes, pay close attention to products quality and after-service, based on locally, while in the country gradually to the world.

Plating machine products:

cantilever rack plating production lines, vertical lifting ring hanging plating production lines, plating jigs, drying ovens, plating rectifier, industrial waste gas and waste water treatment equipment.

Plating machine processing is the main technology in whole production process. According to the requirements of treatment parts, targeted to choose one or several single metal or alloy metal to conduct electroplating process or dipping plating for workpieces, in order to achieve anti-corrosion, wear resistance and beautiful purpose. The plating treatment process equipment mainly include all kinds of fixing plating bath, barrel plating tank, rack, basket etc..

Some times customers often think that plating machine just a piece of equipment, give us product requirements, then as electroplating machine manufacturer we can provide them the machinery they need, then they will be able to plate qualified products after purchasing our device.But this idea is not comprehensive, because electro plating equipment is a system not simple just machine, it is closely related with customer adoption plating technical treat process, nature of products, electroplating engineers work habits, before and after the matching treatment processing methods.

For example: each plating type will develop a variety of main salt system and with its support of additive systems. Such as zinc plating machine has cyanide galvanized zinc, zinc salts zinc, zinc chloride (or potassium galvanizing. ), ammonium salts of zinc, sulfate zinc and other systems. Each system has its own advantages and disadvantages, such as cyanide zinc liquid dispersing ability and depth of ability, fine crystalline plating coating, combined with good bonding force with base material, good corrosion resistance, a wide range of treat technology, the bath solution stability and easy operation, not too sensitive to impurities etc., but seriously toxic, polluting to environment. Zinc chloride solution is free of complexing salt single bath chemical solution, easy waste water treatment, coating bright and leveling system better than other, current efficiency high, deposition speed fast, low hydrogen over potential, such as high carbon steel, castings, forgings easy to plate, but because of weak acid of chlorine ions have some corrosion to electroplating equipment. On the one hand will cause some corrosion to plating plant line, on the other hand no suitable to add an auxiliary anode hole or tubular parts.

Only customers combine with their own situation, we can provide you the most appropriate plating machine, then you can plating the desired effect you want.

Plating machine

Plating machine