ナクロ List of Products and Services

Nakuru Co., Ltd. is a "problem-solving company" that listens to customers' concerns and challenges regarding surface treatment and plating processes, and proposes suitable processes. Nakuru Co., Ltd.'s ultra-thick electroless nickel "NAC-S1000" is a plating designed for dimensional correction of resin molding molds, such as injection molding molds. We specialize in plating molds and help create stable products by coating the molds with a film that is free of pinholes and pits. By masking and selectively plating, we can achieve uniform buildup in the necessary areas. 【Features】 ■ Uniform buildup is possible in areas that cannot be repaired by welding, as well as in extensive and necessary areas. ■ Processing aimed at the desired thickness is possible. ■ Improved corrosion resistance and effective against corrosion. 【Processing Examples】 ■ Buildup of 30μ ■ Buildup of 50μ *For more details, please download the PDF or feel free to contact us.

• Surface treatment contract service
• Other metal materials

The "NAC-S1000" is a plating designed for dimensional corrections and improved corrosion resistance for resin molding molds such as injection molding molds. It specializes in plating for molds, covering them with a pinhole-free and pit-free coating, which contributes to stable product manufacturing. By partially plating with masking, uniform buildup can be achieved only on the necessary areas. 【Features】 ■ Uniform buildup is possible in areas that cannot be repaired by welding, as well as over a wide range or only on necessary parts. ■ Buildup can be achieved in micron order. ■ Corrosion resistance is also improved, and it is effective for corrosion prevention. *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

At Nakuro Co., Ltd., we can increase productivity through plating treatment on "glass molds." We have a proven track record of plating for various applications on glass forming molds. For example, NAC-1000 (Ni-P plating) has shown tremendous effectiveness in addressing defects caused by electric discharge during molding in the cosmetics and beverage industries, leading to a reduction of up to 10% in defects. Additionally, in the field of optical glass lenses, NAC-4000 (Ni-P-B) is adopted for its heat resistance and release properties. 【Features】 ■ Increased productivity ■ Effective in addressing electric discharge defects due to improved release properties ■ Uniform film thickness achievable even for complex shapes ■ Orders can be placed in micrometer units * Uniform film thickness is achievable even for complex shapes. Orders can be accepted in micrometer units. * For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Glass
• Processing Contract

Electroless nickel plating. If you are troubled by rust or corrosion, please leave it to us. Our electroless nickel 'NAC-S1000' can provide a plating film that excels in resistance to fluorine gas and corrosion on the substrate. Additionally, it allows for uniform plating that is free from pinholes and pits, which helps improve the durability of molds for resins such as PTFE, PFA, and FEP. ★ We are currently offering materials that include performance comparison data with Hastelloy and SUS. 【Features】 ■ Plating film without pinholes or pits is possible ■ Excellent corrosion resistance and fluorine gas resistance ■ Uniform plating is possible even on complex shapes ■ Lower cost compared to Hastelloy * For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

We have developed an ultra-thick film electroless nickel, 'NAC-S1000', for optical lens molds (pickup lens molds, mobile camera lens molds, light guide plate molds). This product achieves high-quality machinability due to minimal vibration during diamond cutting processing. It features ultra-thick plating capable of up to 1000μm. It is compatible with various optical lens molds and realizes high machinability. 【Features】 ■ Ultra-thick plating capable of up to 1000μm ■ Compatible with various optical lens molds ■ Achieves high machinability *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials
• lens

Non-electrolytic nickel-phosphorus + PTFE "NAC-FRON" uniformly disperses and composites PTFE particles into "NAC-1000," making it suitable for water-repellent, lubricating, and non-stick applications. The melting point is 890°C for Ni-P and 327°C for PTFE. 【Features】 ■ Uniform dispersion and compounding of PTFE particles ■ Achieves water repellency ■ Lubricity ■ Suitable for non-stick applications *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

Electrolytic nickel tungsten alloy "NAC-6000" was developed in collaboration with the Osaka Prefectural Institute of Industrial Technology, achieving corrosion resistance that cannot be obtained with "NAC-44W" by containing P. The content of P and W can be adjusted. The processable size for iron, stainless steel, copper, brass, and aluminum is 400×400×400. 【Features】 ■ Joint development with the Osaka Prefectural Institute of Industrial Technology ■ Achieves corrosion resistance not obtainable with NAC-44W ■ The content of P and W can be adjusted *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

Non-electrolytic cobalt phosphide "NAC-5000" is alloyed with phosphorus based on cobalt, exhibiting excellent anti-galling properties. It is used in sliding parts at temperatures around 200 to 300 degrees. The processable size for iron, stainless steel, copper, brass, and aluminum is all 400×400×400. 【Features】 ■ Alloyed with phosphorus based on cobalt ■ Excellent anti-galling properties ■ Used in sliding parts at temperatures around 200 to 300 degrees *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

The non-electrolytic nickel-phosphorus-boron "NAC-4000" excels in solderability and also has excellent impact resistance and heat resistance. By undergoing heat treatment, it achieves a hardness of Hv950 or higher, making it highly resistant to wear, which is suitable for preventing wear in sliding components. 【Features】 ■ Excellent solderability ■ Heat resistance ■ Impact resistance ■ Wear resistance *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

The non-electrolytic nickel-boron-tungsten "NAC-3000" has excellent solderability, similar to "NAC-2000," and due to its tungsten content, it also excels in heat resistance and oxidation resistance, making it suitable for heat-resistant and wear-resistant applications. In glass molds, it has outstanding release properties. 【Features】 ■ Excellent solderability ■ Heat resistance ■ Oxidation resistance *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

The electroless nickel boron "NAC-2000" has excellent solderability and is used as an alternative to gold plating. Additionally, it has a higher hardness immediately after plating compared to NAC-1000, making it suitable for providing wear resistance to materials (such as Al, Cu) that cannot undergo heat treatment. 【Features】 ■ Excellent solderability ■ Used as an alternative to gold plating ■ Suitable for providing wear resistance *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

Electroless nickel-phosphorus "NAC-1000" has superior corrosion resistance compared to electroplated nickel and is the most widely used electroless nickel plating. By undergoing heat treatment, its hardness doubles, making it suitable as a substitute for hard chrome and for parts that require wear resistance, hardness, and precision. By using barrels and automatic lines, we can accommodate high-quality, large lots. Single item orders are also accepted. 【Features】 ■ Excellent corrosion resistance ■ Hardness doubles with heat treatment ■ High quality ■ Accommodates large lots ■ Single item orders available *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

The "NAC-S1000" is a super corrosion-resistant electroless nickel that is strong against fluorine gas. It excels in corrosion resistance for resin molding molds such as PTFE, PFA, and FEP, and allows for uniform film thickness even in complex shapes. By heat treatment, the hardness doubles, making it suitable as an alternative to hard chrome, and for parts that require wear resistance, hardness, and precision. For more details, please contact us. 【Features】 ■ Plating film without pinholes or pits is possible ■ Increased durability against fluorine gas ■ Excellent corrosion resistance for resin molding molds ■ Uniform film thickness is achievable even in complex shapes *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other metal materials

The "NAC-S1000" is an electroless nickel that can be coated with a plating film that excels in resistance to fluorine gas and corrosion on substrates. It allows for uniform plating that is free of pinholes and pits, even on complex shapes, and helps improve the durability of molds for resins such as PTFE, PFA, and FEP. ★ We are currently offering materials that include performance comparison data with Hastelloy and SUS. 【Features】 ■ Plating film without pinholes or pits is possible ■ Excellent corrosion resistance and fluorine gas resistance ■ Uniform plating is possible even on complex shapes ■ Lower cost compared to Hastelloy * For more details, please refer to the PDF materials or feel free to contact us.

• Surface treatment contract service
• Other metal materials

At Nakuro, we carry out integrated production of plastic products in the second production department. An integrated system from mold making to assembly and final inspection. By having conducted integrated production up to now, we have achieved high quality manufacturing that takes into account all processes, reduces costs, and delivers finished products to you more quickly. We also accept single-item machining and light shaping, so please feel free to contact us. 【Features】 ■Integrated production ■High quality ■Cost reduction ■Speedy ■Single-item machining and light shaping available *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Processing Contract
• Surface treatment contract service

At Nakuro, we perform surface treatments that excel in corrosion resistance, heat resistance, wear resistance, release properties, and non-stick properties in the production department (metal products). We mainly handle electroless nickel-phosphorus plating, as well as special platings such as boron and tungsten alloy plating, and Teflon composite plating. With four lines of fully automatic and semi-automatic plating equipment and a prototype line, we achieve high quality and low cost by processing materials such as iron, copper, brass, aluminum, and stainless steel according to their material and lot. 【Supported Platings (Partial)】 ■ NAC-1000 Electroless Nickel Phosphorus ■ NAC-2000 Electroless Nickel Boron ■ NAC-3000 Electroless Nickel Boron Tungsten ■ NAC-4000 Electroless Nickel Phosphorus Boron ■ NAC-5000 Electroless Cobalt Phosphorus *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

The "NAC-S1000" is an ultra-thick film electroless nickel for optical lens molds (pickup lens molds, mobile camera lens molds, light guide plate molds). In diamond cutting, it achieves high-quality machining with almost no vibration, capable of processing up to 500μm. Additionally, a single crystal diamond tool can process over 5 km without chipping, with a surface roughness of an average Ra of 12.69. 【Features】 ■ Ultra-thick plating capable of up to 500μm ■ Compatible with various optical lens molds ■ Achieves ultimate machinability ■ Free prototype samples available *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service