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General electroplating technology refers to the commonly used electroplating engineering techniques in industries such as hardware and sanitary ware. It is a process that utilizes electrolysis to deposit a layer of metal or alloy onto the surface of metal or other material workpieces, thereby preventing metal oxidation and improving wear resistance, conductivity, reflectivity, corrosion resistance, and aesthetics. General electroplating processes typically involve the use of specialized chemicals such as pretreatment chemicals and electroplating additives.
The surface treatment process for hardware and sanitary ware products generally involves steps such as pretreatment, alkaline copper plating, acid copper plating, nickel plating, and chromium plating. Each step requires the use of general electroplating chemicals. Therefore, there is a huge demand for related general electroplating chemicals in the surface treatment process of hardware and sanitary ware products.
As a crucial component of the surface treatment process, the pretreatment process removes foreign contaminants such as wax stains, oil stains, oxide films, and fingerprints from the workpiece surface through chemical or electrolytic methods like degreasing, de-oiling, descaling, film removal, and cleaning. This ensures the workpiece has a clean appearance, improves coating adhesion, and guarantees coating reliability, serving as a key guarantee for enhancing surface treatment quality.
Product Advantages
Our company's high-efficiency and environmentally friendly pretreatment specialty chemicals offer advantages such as being phosphorus-free, ammonia nitrogen-free, nitrite-free, having low COD (Chemical Oxygen Demand), high treatment efficiency, good water rinsing properties, low foam generation, and usable temperatures that can be reduced to below 50°C. These benefits can improve the first-pass yield rate and single-line production capacity, reduce production costs, meet industry clean production requirements, and possess significant environmental advantages. They can also be used in complete production lines with various plating types, effectively meeting surface treatment manufacturing needs.
Due to varying on-site processes and requirements, different product codes of pretreatment specialty chemicals can be selected. The products listed below are only typical examples from our company; for more product codes, please consult our on-site sales and service engineers.
SF-301D Electrolytic Degreasing Powder for Steel
Suitable for electrolysis and hot dipping degreasing of steel workpieces.
1. The solution has good conductivity and can be used for high current electro-cleaning;
2. High cloud point, low foam;
3. Strong descaling ability, suitable for cleaning various heavy oil stains.
SF-6305N Phosphorus-free Electrolytic Degreasing Powder for Alloy
Suitable for electrolytic degreasing for copper, aluminum, and zinc alloys.
1. Phosphate-free degreasing powder, wastewater will not accelerate algae growth;
2. Use Biodegradable surfactants;
3. Can be effectively operated at low temperatures, 43-54 ℃;
4. Good rinsing ability, no flocculent coating or foam layer appeared on the workpiece;
5. Good activation effect within a wide range of current density.
SF-301B High-efficiency Metal Degreasing Powder
Suitable for chemical degreasing for steel workpieces with high cleaning requirements.
1. Strongly removes animal and vegetable oils, mineral oils, and stubborn oil stains;
2. Good anti-corrosion and rust prevention for ferrous metals;
3. High tolerance to oil stains and long service life;
4. Degreased workpieces have good rinsing ability;
5. Does not contain nitrite, safe and environment-friendly
SF-6302E High-efficiency Phosphorus-free Degreasing Powder for Alloy
Suitable for chemical degreasing of copper, zinc, aluminum and other alloy parts, and can be used for hot dipping cleaning or ultrasonic cleaning. Made with high-quality and efficient surfactants, penetrants, detergents, and corrosion inhibitors, with moderate alkalinity and will not corrode metals except magnesium alloys.
1. Strong degreasing and stain removal ability;
2. Does not corrode substrate metals, has excellent anti-corrosion properties for copper, zinc, and their alloys;
3. Suitable for aluminum plating process and aluminum anodizing process;
4. Degreased workpieces have good rinsing ability, can prevent secondary pollution;
5. Phosphorus-free, non-toxic, environmentally friendly degreaser.
SF-601A Strong Dewaxing Agent
Suitable for removing polishing wax scale on the surface of substrates such as steel, stainless steel, copper, and their alloys.
(1) Strong penetration and stripping effect on wax scale;
(2) Featuring special corrosion inhibiting components, the polished substrate after wax removal shows no corrosion or loss of gloss;
(3) Low working concentration;
(4) Long service life;
(5) Good water solubility, can be prepared with cold water;
(6) The chelating agent does not contain organic solvents and uses easily degradable surfactants, and is more environment-friendly cleaner.
SF-6208 Dewaxing Agent for Alloy
Suitable for wax removal from zinc alloy die-casting parts, copper and copper alloy parts, and high-silicon aluminum alloy parts, especially suitable for wax removal from bathroom copper or zinc alloy parts by hot dipping or ultrasonic cleaning.
1. Strong penetration and emulsification power and rapid cleaning effect on wax stains;
2. Solution is weakly alkaline, contains corrosion inhibitors, does not corrode the alloy substrate metals;
3. Can be used to clean most metal workpieces, including copper and copper alloys, aluminum and zinc castings, etc. Most stains can be removed by simple soaking, and enhanced stirring can improve cleaning effect and speed;
4. Better effect when combined with ultrasonic stirring.
SF-201 Alkaline Degreaser
Suitable for degreasing treatment in various processes such as electroplating, phosphating, oxidation, and painting of various metal parts. It features environmental friendliness, high degreasing efficiency, good water rinsability, good corrosion inhibition, and a wide operating temperature range (can be used from room temperature to 80°C). It can be applied using various production methods such as immersion, spraying, ultrasonic cleaning, or barrel plating and rinsing etc.
The product is phosphorus-free, ammonia nitrogen-free, nitrate-free or nitrite-free, has low COD, can be used at room temperature or medium-low temperatures, has low surface tension, and strong emulsifying ability.
SF-202 Acid Degreaser
Suitable for degreasing and rust removal of steel raw parts, polished parts, especially tubular parts before electroplating. It is safe, non-toxic, easy to discharge, and easy to rinse. It is mainly used to enhance the speed of acid pickling for degreasing and rust removal, while inhibiting acid mist and preventing over-corrosion of the substrate.
After adding this product, the corrosion rate of the metal can be reduced to 1/10 compared to no addition.
General electroplating technology refers to the commonly used electroplating techniques in industries such as hardware and sanitary ware. It is a process that utilizes electrolysis to deposit a layer of metal or alloy onto the surface of metal or other material workpieces, thereby preventing metal oxidation and improving wear resistance, conductivity, reflectivity, corrosion resistance, and aesthetics. General electroplating processes typically involve the use of general electroplating additives.
Product Advantages:
Sanfu's electroplating additives produce fewer decomposition byproducts, have excellent covering power, are cyanide-free and hexavalent chromium-free (containing no toxic substances), offer strong coating adhesion, high current efficiency, low organic impurities in the coating, and provide corrosion resistance that surpasses cyanide electroplating, along with superior decorative performance, making them suitable for electroplating in industries with high corrosion resistance requirements.
Due to varying on-site processes and needs, different product codes of general electroplating additives can be selected. The products listed below are only typical examples from our company; for more product codes, please consult with our on-site sales and service engineers.
SF-867 Trivalent Chromium Electroplating Process
Suitable for workpieces with complex shapes and those requiring strict plating parallelism, reducing missed plating and improving plating parallelism. It is applied in the chromium plating industry for hardware, molds, rocker arms, etc.
1. A chloride-based trivalent chromium electroplating process that can deposit bright, decorative chromium layers. The iron content of this coating is less than 5%; it is very suitable for replacing traditional hexavalent chromium electroplating processes.
2. Contains no hexavalent chromium, and its coating exhibits excellent corrosion resistance to de-icing salts containing calcium chloride or magnesium chloride.
3. The color of the coating is very similar to that of traditional hexavalent chromium coatings. Thinner coatings exhibit a microporous structure. When the thickness exceeds 0.5μm, the coating structure becomes microcracked.
4. Due to its special alloy composition, the coating shows a significantly higher potential when measured with saturated calcium chloride compared to traditional hexavalent chromium coatings.
semi-bright Nickel – In double-layer nickel plating, the bright nickel layer has a lamellar structure, while the semi-bright nickel layer has a columnar structure.
SF-380 Semi-Bright Nickel Plating Brightener
Suitable for multilayer nickel electroplating of automotive and motorcycle parts, bathroom accessories, metal furniture, and more.
1. The coating has semi-bright luster, fine columnar structure, and good ductility;
2. Good adhesion with high sulfur nickel or bright nickel coatings;
3. Stable potential difference when combined with bright nickel, excellent corrosion resistance;
4. Good dispersion ability, strong coverage ability, and good leveling performance of the plating solution;
5. Low brightener consumption, few decomposition products, high impurity (iron) tolerance, can be continuously filtered and purified with activated carbon, easy to maintain.
SF-360 Rack Nickel Plating Brightener
1. Suitable for rapid brightening and high leveling workpieces such as motorcycles and metal furniture.
2. Rapid brightening and high leveling ability;
3. Soft coatings with few pores and good anti-corrosion performance;
4. High brightener concentration, low consumption, high impurity tolerance;
5. The plating solution is stable and easy to operate.
Acidic Copper 3000X and Cyanide-free Alkaline Copper 5000X
SF-3000 Acidic Copper Brightener
Suitable for hardware parts of all sizes or zinc alloy die-castings such as lighting fixtures, eyewear, jewelry, and cutlery; generally versatile with no process limitations.
1. Mirror-like high gloss, high levelling and strong fullness;
2. Stable and easy to manage, and no decomposition products after long-term use;
3. Excellent levelling, low-area gloss and good ductility;
4. Strong temperature resistance, maintain good gloss even at high temperatures;
5. Wide operating range and high chloride ion tolerance.
SF-638 Cyanide-free Alkaline Copper Plating
Suitable as a strike layer for brass, iron, aluminum alloy, and zinc alloy die-cast parts; can be used as a pre-copper plating layer for nickel and acid copper plating.
1. This process has excellent throwing and coverage performance, especially in the low current density area.
2. Can be directly plated on the surface of zinc die cast parts through rack plating.
3. Can obtain a pore-free, dense, fine, smooth, and soft copper plating layer with excellent adhesion.
4. Does not contain cyanide and strong chelating agents, and the wastewater treatment is simple.
Zinc Plating 3000X
SF-524 Potassium Chloride Bright Zinc Plating
Suitable for zinc plating on low carbon steel, high carbon steel, carburizing steel, cast iron, powder metallurgy parts, and other substrates, both barrel plating and rack plating are available.
1. The plating layer has a wide bright range, low brittleness, and uniform coating;
2. The plating solution has a low odor, improving the production environment;
3. The plating solution has a wide current density range;
4. Easy to operate and maintain, easy wastewater treatment;
5. The plating solution has low COD and ammonia nitrogen compounds, which is beneficial to environmental protection;
SF-528 Cyanide-free Alkaline Zinc Plating
Suitable for zinc rack and barrel plating of steel parts (excluding carburizing steel and cast iron), especially for zinc rack plating and thickened zinc plating of complex shaped parts and large flat parts.
1. Good deep plating ability and uniform plating ability.
2. The coating has good flexibility and low brittleness, basically no brittleness at 10-15 microns.
3. Wide range of processes and simple management. Bright plating can be obtained when the metal zinc is in the range of 8-15 grams/liter, with a current density of up to 10 amperes/dm2 without burning.
4. The coating has good brightness and is easy to passivate.
5. The current efficiency is 70-80%, higher than cyanide zinc plating.
6. Wastewater treatment is simple (acid-base neutralization).
SF-572 High Corrosion Inhibiting Trivalent Chromium Blue-White Passivator
Suitable for blue passivation treatment of zinc plating layers on various substrates.
1. It is a high-performance trivalent chromium zinc plating blue-white passivator for zinc plating with high film hardness and good uniformity;
2. High corrosion resistance, when the film thickness is above 8μ, the neutral salt spray test can reach more than 96 hours;
3. Meets automotive specifications, and the passivation film does not contain hexavalent chromium;
4. SF-572 High Corrosion Inhibiting Trivalent Chromium Blue-White Passivator is suitable for both rack and barrel plating processes.
