清川メッキ工業 List of Products and Services

"Nickel Boron (Ni-B) plating" incorporates boron (B) into an electroless nickel (Ni) coating, achieving hardness comparable to chrome plating due to the quality of the film. It has higher hardness than conventional electroless nickel (Ni-P) coatings and exhibits good solderability. Additionally, it requires a uniform thickness characteristic of electroless plating, and its improved corrosion resistance has made it suitable for precision components that demand wear resistance for over 10 years. [Features] ■ Joint compatibility ■ High thermal conductivity ■ High hardness and rigidity ■ High hardness + uniform film thickness distribution ■ Good solderability *For more details, please refer to the PDF document or feel free to contact us.

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"Zinc plating" involves electrolyzing the iron substrate in a zinc plating solution to create a zinc plating film, followed by the formation of a chromate conversion coating. The coating consists of two layers: a zinc layer and a chromate layer, providing high corrosion resistance. It prevents the occurrence of rust (red rust and white rust) on the material (iron). Corrosion resistance evaluation is conducted through a neutral salt spray test in accordance with JIS H8502. [Features] - Corrosion resistance - Blackening treatment - Zinc chromate coating - Passed corrosion resistance standards and torque tests of major companies A and B - Coating analysis available, including ROHS analysis and hexavalent chromium determination tests *For more details, please refer to the PDF document or feel free to contact us.

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"Chrome plating" can accommodate long items of 2000mm class and complex shapes. It is backed by achievements in hard chrome, including winning the Minister of Health, Labour and Welfare Award at the National Plating Technology Competition in 2018. We can also handle thick film formation exceeding 100μm, providing high added value with over 50 years of experience and craftsmanship. 【Features】 ■ Capable of handling long items ■ Polishing treatment during stripping and regeneration is also possible ■ Supports ultra-thick films exceeding 100μm ■ Prototype support for thin film processing (around 3μm) is also available ■ Partial plating can be accommodated according to your requests *For more details, please refer to the PDF document or feel free to contact us.

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"Alumite" can accommodate small items as well as long objects up to 3500mm in length. Thanks to environmentally conscious processing, it is used in a wide range of fields from decorative and anti-corrosion purposes to wear resistance. Our company specializes in hard alumite for a material known as duralumin (2017 alloy). We also have a track record of mass production of hard alumite in roll form with a length of about 2000mm. 【Features】 ■ Special materials ■ Capable of handling long items ■ Uniform film ■ Masking processing is possible for areas with dimensional tolerances ■ Particularly suitable for products with strict dimensional accuracy *For more details, please refer to the PDF document or feel free to contact us.

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The "Blackening Treatment" is a series of black treatments tailored to customer needs, offering wear resistance, rust prevention, and anti-reflective properties for optical systems. We have a proven track record in mass production of electroless black nickel, black dyeing (chemical treatment), manganese (chemical treatment), and black anodizing. Additionally, there are relatively inexpensive treatments such as chemical treatments available. 【Features】 ■ Low resistance ■ High conductivity ■ Anti-reflective ■ Rust prevention, wear resistance ■ Lubricity, water repellency *For more details, please refer to the PDF materials or feel free to contact us.

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Our company succeeded in the mass production of Nd-based magnet plating in 1991, and after 30 years of mass production, we can now perform nickel plating on Nd-based magnets with excellent adhesion, without significantly roughening the surface. We can also uniformly apply plating to materials with internal diameters or complex shapes with uneven surfaces. Additionally, we are capable of measuring small dimensions (less than 1mm) that are difficult to measure with a micrometer. 【Features】 ■ Low resistance ■ Low thermal conductivity ■ Compatibility of soft etching and adhesion enhancement ■ Plating possible on magnets in 1mm increments ■ Non-contact dimension measurement available *For more details, please refer to the PDF document or feel free to contact us.

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For plating small parts and electronic components, we offer barrel plating services. Not only can we produce large quantities at once, but we also develop various equipment, plating types, and technologies, enabling us to handle micro-sized parts, difficult materials, special shapes, and automotive components. We possess various mass production barrel plating lines that incorporate the technologies we have cultivated. 【Features】 ■ Supports various specifications with barrel plating ■ Capable of handling micro-sized parts ■ Proposes solutions for quality issues ■ Low-stress plating ■ Quick response for mass production *For more details, please refer to the PDF document or feel free to contact us.

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Our company is capable of coating micron-sized powders that are smaller than visible pollen, with a nano-order thickness on each individual particle. "Powder coating" is a technology that applies a coating to extremely small powders (fine particles) that are nearly invisible. With approximately 20 years of experience, we have a diverse track record of combinations of core particle materials and coating films. [Features] ■ Added value through powder coating ■ Provision of conductivity ■ Provision of electromagnetic wave shielding ■ Cost reduction of precious metal powders ■ Mass production achievements ranging from a few kg to several hundred kg per month *For more details, please refer to the PDF document or feel free to contact us.

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"Water-repellent plating (Ni-PTFE composite plating)" is a composite plating film in which PTFE particles are co-deposited within the Ni plating layer. It contributes to the enhancement of functions such as water repellency, release properties, sliding properties, and dirt adhesion prevention across a wide range of industrial fields including home appliances, machinery, and medical devices. We can provide plating films that comply with the REACH regulations revised in July 2020. 【Features】 ■ Release properties ■ Corrosion resistance ■ Water repellency ■ Sliding properties ■ Non-stick properties (dirt resistance) *For more details, please refer to the PDF materials or feel free to contact us.

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Our company performs electroless NiP/Au plating on semiconductor wafer Al electrodes, primarily focusing on power semiconductors for automotive applications. To meet customer requirements, we have designed a unique plating cassette and circulation mechanism to improve wafer surface uniformity. Additionally, by achieving a uniform film thickness distribution, we can reduce the inter-chip variation in phosphorus content within the nickel and minimize the variation in nickel consumption during solder mounting. 【Features】 ■ Unique fixtures and equipment that achieve uniform film thickness distribution ■ Reduction of variation in nickel consumption during solder mounting ■ Large equipment compatible with 12-inch wafers ■ Plating suitable for high-temperature mounting/high thermal resistance ■ Electroless copper plating for power devices *For more details, please refer to the PDF document or feel free to contact us.

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Our company strives to minimize Ni corrosion (black pad) caused by replacement Au plating and provides a coating with bonding strength that satisfies our customers. Since it is an electroless plating process, it is possible to plate the electrodes of substrates with independent pads and cavity structures. We propose plating films for Ni and Au plating that are tailored to the environment in which the products will be used, such as solder joints and wire bonding. 【Features of Electroless Ni Plating Coating】 - Uniform plating film can be obtained without edge effects, unlike electroplating. - Excellent film thickness uniformity makes it suitable for products with complex shapes. - Can achieve greater hardness compared to electro Ni plating. - Superior corrosion and wear resistance. - Depending on the P concentration, it is also possible to impart non-magnetic or magnetic properties to the coating. *For more details, please refer to the PDF document or feel free to contact us.

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The "embedded plating technology for vias in wafers" is used for the purpose of improving frequency characteristics, achieving high-density miniaturization, and reducing power consumption, and is also being considered for applications in 5G communications. Our company is capable of metal embedding through plating for both blind vias and through vias. Additionally, we accommodate various via shapes, including straight shapes, constricted shapes, tapered shapes, and wall surface irregularities. 【Features】 ■ Embedding plating without voids is possible ■ Reduces the burden of CMP polishing ■ Compatible with various via shapes ■ Non-destructive confirmation of the embedding state is possible ■ Conformal plating technology *For more details, please refer to the PDF document or feel free to contact us.

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Micro bumps and fine wiring through "plating" are essential technologies for enhancing the performance and miniaturization of electronic devices, such as improving transmission characteristics by shortening wiring lengths. Our company handles the entire process, from the plating process to the preceding and subsequent patterning and etching processes. We can also accommodate plating for micro bump shapes and line shapes, as well as for micro patterns of several tens of micrometers. 【Features】 ■ Comprehensive support from sputtering to seed etching ■ Creation of micro patterns through electrolytic plating ■ Support for small-scale prototype processing ■ Prototyping possible from just one piece ■ Design of dedicated equipment *For more details, please refer to the PDF document or feel free to contact us.

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Plating on ABS resin allows for weight reduction and cost savings compared to metal products. Our company supports plating on relatively small resin parts, specifically those with dimensions of 300mm or less. Additionally, we can process plating on small products with complex shapes while taking their geometry into consideration. 【Features】 - Weight reduction and cost savings compared to metal products - Plating that emphasizes decorative and corrosion-resistant properties for small parts - Support for plating on relatively small resin parts, specifically those with dimensions of 300mm or less - Potential for developing new applications - Available plating options include glossy copper, glossy nickel, and gold plating *For more details, please refer to the PDF document or feel free to contact us.

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Bulk plating of components with different materials can often be difficult or may not achieve the desired performance. At our company, we enable plating on such materials by designing and developing processes from scratch, assisting our customers in new product development and the establishment of new processes. The plating films also vary depending on the application, such as nickel (gold), copper, and tin, so we will discuss the details in advance and make proposals accordingly. [Features] ■ Joint compatibility ■ Low resistance ■ Process design and development from scratch ■ Bulk plating for dissimilar metal joining materials ■ Bulk plating for metal-polymer composite materials and metal-ceramic composite materials *For more details, please refer to the PDF document or feel free to contact us.

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Our company is capable of plating various titanium materials and forming oxide films (anodization). Plating treatment allows for minimal changes in the surface condition and dimensions of the material, achieving good adhesion. Anodization can impart functions such as photocatalytic properties to titanium oxide. Vividly colored titanium, such as blue, yellow, and pink, is treated with anodization to create a nano-scale oxide film. The color can be expressed through changes in the thickness of the titanium oxide film. 【Features】 ■ Plating treatment and oxide film formation are possible for various titanium materials ■ Improved adhesion - plating on titanium ■ Reduced resistance and improved X-ray opacity - plating on titanium ■ Identification by color and hydrophilicity - anodization on titanium ■ Spark discharge - anodization on titanium *For more details, please refer to the PDF document or feel free to contact us.

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We often receive inquiries about whether we can achieve "this kind of plating" to improve the performance and functionality of existing products. While it is often not easy, we are committed to working diligently with our customers. We will discuss the appropriate base materials individually. Generally, we start with small-scale responses, but depending on the case, we may consider preparing larger equipment. 【Features】 ■ Plating for special products ■ Special plating coatings ■ Consultation available for PTFE composite plating on metals other than nickel ■ Support for prototypes with special specifications that mix electroless and electrolytic processes *For more details, please refer to the PDF materials or feel free to contact us.

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"Plating" refers to the process of applying a thin layer of metal onto the surface of a material. So, what changes when plating is done? I will explain the benefits and significance of plating. For more details, please refer to the related links below. I hope you can feel at least a little of the interesting aspects of plating. [Contents] ■ What is plating? ■ The meaning of plating - Aesthetic beauty through decoration - Corrosion resistance to prevent metal rust - Functionality to support the digital society ■ The world of plating *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials

To apply plating, it can be divided into two types: "dry plating method" and "wet plating method." The "dry plating method" is a method that does not use aqueous solutions, allowing for the formation of very thick films, including the "hot-dip plating method," which is highly durable, and the "vacuum plating method," which can create films that cannot be formed by wet plating. The "wet plating method" is a method of plating by immersing the item to be plated in an aqueous solution. Among wet plating, there are two types: electrolytic plating and electroless plating, and our company conducts both types of wet plating. 【Features of the Dry Plating Method】 ■ Hot-Dip Plating Method - Plating by immersing in molten metal - Can form thick films and is highly durable ■ Vacuum Plating Method - Plating in a vacuum state within a specialized device - Can form films that cannot be created by wet plating *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials
• Surface treatment contract service

Electrolytic plating and electroless plating are the main types of plating that belong to the wet plating method. The wet plating method is a technique where "the item to be plated is immersed in an aqueous solution to perform the plating," and the method we use involves depositing a metallic film (plating coating) from the solution. The related links below provide detailed information about "electrolytic plating (electroplating)" and "electroless plating (chemical plating)." Please take a look. [Contents] ■ How is the plating coating deposited from the aqueous solution? ■ What is electrolytic plating (electroplating)? ・ A plating method that uses electrical energy ・ Important aspects of electrolytic plating * For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials
• Surface treatment contract service

There is a wide variety of items that can be plated. Depending on the item, there are large products, small products, fragile products, products with complex shapes, products with strict film thickness requirements, and products in large quantities. Moreover, there are many types of plating available. Numerous plating methods have been devised to suit the specifications of each product, and each plating company also has its own original innovations. Our company website introduces examples of well-known plating methods. For more details, please refer to the related links below. 【Contents】 ■ Various methods depending on the item being plated ■ Rack plating - this is what plating is all about ■ Basket plating - if it can't be plated on a rack, use a basket ■ Barrel plating - when it comes to mass production, it's barrel plating ■ Hoop plating - suitable for mass production of continuous sheets or wires *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

It is said that plating was already being practiced in Mesopotamia around 1500 BC. Later, it spread to Japan, where shiny gold plating was often used for decorative items such as crowns. In fact, the ancient method of gold plating was different from modern techniques; it involved dissolving gold in mercury, applying it to the surface, and then heating it to evaporate the mercury, leaving the gold behind—a method known as "amalgam plating." Our company website introduces the flow that led to the modern wet plating techniques being established all at once. For more details, please refer to the related links. [Published Content] ■ Is the origin of plating in Fukui?! *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

There are various chemical substances in the world. Among them, some toxicities that were not understood in the past have recently come to light, and in order to create a society that is more considerate of the environment and living organisms, regulations are being strengthened regarding toxic substances. In plating, many chemical substances are used, including mercury, lead, cadmium, cyanides, hexavalent chromium, hydrofluoric acid, and other substances that can be harmful to the environment and human health. On our company website, we will introduce our efforts in the plating industry regarding these substances. For more details, please refer to the related links below. [Contents] ■ Thorough management that considers the environment ■ Development of plating technologies that are environmentally friendly *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

There are regulations and laws regarding plating, which is a thin metallic film of less than 1 millimeter. To ensure that you can place your orders with greater peace of mind, our company has established an analysis system for four substances within the coating, in addition to our daily production management system. On our company website, we introduce examples of our efforts to comply with these regulations and laws, including those that are often discussed with our customers. For more details, please refer to the related links below. 【Contents】 ■ RoHS Directive ■ ELV Directive ■ REACH Regulation ■ Precautions for plating coatings *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
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The bonding function is commonly used in electronic and electrical devices. When it comes to bonding, some of you may have the image of pulling out solder in a reel and using a soldering iron to melt the solder and attach components. Plating is a metallic film, and the properties vary depending on the metal used. On our company website, we introduce "functional plating," which is one of the advantages of plating that utilizes the properties of the metal to impart functionality. For more details, please refer to the related links below. [Content Included] ■ "Bonding" plating that connects metals together *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials

Since plating is a metallic film, it can impart "metallic properties" to the surface of the item. For example, it is also possible to impart "physical properties" such as surface hardness, slip resistance, and magnetism. Our company website introduces representative physical properties such as hardness, slip resistance, and magnetism. For more details, please refer to the related links below. 【Contents】 ■ Imparting high hardness and hard characteristics - Improved resistance to physical stress - Suppression of component wear due to abrasion ■ Imparting slip resistance - Prolonging the lifespan of sliding components ■ Imparting magnetism *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

The plating film will precipitate when reacted in the plating solution. However, simply having a processing step is not enough to achieve a plating that does not peel off cleanly. By ensuring that the surface of the item is properly cleaned through appropriate pre-treatment processes, a beautiful plating can be achieved. It is often said that "the quality of plating is determined by the pre-treatment," highlighting the importance of the pre-treatment process. On our company website, we introduce various methods including solvent degreasing, emulsion degreasing, alkaline immersion degreasing, and electrolytic degreasing. Please take a look at the related links below. [Content Included] ■ Pre-treatment is essential for beautiful plating ■ One important pre-treatment process - degreasing ・Solvent degreasing, emulsion degreasing ・Alkaline immersion degreasing ・Electrolytic degreasing *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

Composite plating refers to a plating film that contains particles of another material within the plating layer. By combining the plating film with the particle material, a coating with new properties is created. This is one of the fields of plating that has been particularly active in research in recent years. Our company website introduces "the mechanism and characteristics of composite plating" and "examples of composite plating." For more details, please refer to the related links below. [Contents] ■ Mechanism and characteristics of composite plating ■ Examples of composite plating - Teflon composite plating (PTFE composite plating) - Diamond composite plating - Silicon carbide composite plating (SiC particles) *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

Since ancient times to the present, the most common material for plating has been iron-based materials. While it is easy to apply plating to iron materials, when it comes to actual products, it is not enough for the plating to simply adhere. Quality requirements for plating include good adhesion, absence of discoloration or roughness, and other appearance abnormalities. Additionally, since the composition and material conditions vary depending on the type of product, it is necessary to perform high-quality plating tailored to each specific case. To achieve this, optimization of the plating process and treatment conditions is essential. On our company website, we provide a clear table outlining the characteristics and application examples of different types of iron-based materials. Please take a look at the related links below. [Content Included] - Plating is not just about "getting it to stick" - There are many types of "iron," and for each type, there is a different plating process - Is plating on carbon steel difficult? - Characteristics and application examples of different types of iron-based materials - Structural steel / Special purpose steel / Cast and forged steel / Cast iron *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials
• Surface treatment contract service

The purpose of plating on semiconductors includes the formation of UBM (Under Bump Metal, Under Barrier Metal), the formation of solder bumps, and wiring formation. Additionally, there are methods for film formation using both electrolytic plating and electroless plating, but it is necessary to set the method and plating specifications based on factors such as electrode size, plating metal, and bonding methods. On our company website, we will introduce the advantages and disadvantages of both electrolytic plating and electroless plating, as each method has its strengths and weaknesses. For more details, please refer to the related links below. [Content Included] ■ Purpose of plating on semiconductors ■ Advantages and disadvantages of electrolytic/electroless plating on semiconductor wafers ■ Summary *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

The plating film has a force known as "internal stress." When plating large bolts or nuts, some stress in the plating may not be a significant issue. However, when plating products like thin, flimsy films, it can become a problem. There are various methods to adjust stress, and our company considers the balance with other properties of the plating film while examining and finding the suitable plating coating. The related links below provide detailed information about the characteristics of plating. Please take a look. 【Contents】 ■ Internal stress of plating ■ Control of plating stress ■ How to control plating stress? *For more details, please refer to the PDF materials or feel free to contact us.

• Other metal materials
• Surface treatment contract service

There are various methods to evaluate the adhesion of plating films, and I will introduce a few of them. The "tape test" is easy to perform and is a formal test specified in JIS H 8504. We often use it in our company, and when evaluating multiple levels of processing conditions, we can determine superiority or inferiority based on the number of squares that have peeled off and the manner in which they have peeled. Additionally, since we have many small parts, we do not conduct it, but there is also a testing method called the "bending test." There are other testing methods such as the extrusion test and the file test, and in our company, we customize the evaluation methods according to our customers' products. Please feel free to contact us when needed. 【Tape Test Procedure】 1. Leave a 30-50mm area without adhesive tape and firmly attach the tape to the plating surface. 2. Hold the unadhered part of the tape and quickly and strongly pull it off so that it is perpendicular to the plating surface. 3. Check the removed tape; if there is any plating adhesion, it is judged as poor adhesion. *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials
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