Ohnoseiko Viet Nam co.ltd

Process Optimization via Friction Stir Welding (FSW)

Process Optimization for Aluminum Heat Sinks through Friction Stir Welding (FSW) As electrical and electronic equipment continues to move toward higher power density and compact designs, thermal management has become increasingly important. In response, liquid cooling solutions are gradually replacing conventional air-cooling methods, driving demand for aluminum heat sinks and cold plates with integrated cooling channels that require high leak tightness, mechanical strength, and stable quality in mass production. Ohnoseiko Vietnam provides advanced Friction Stir Welding (FSW) solutions optimized for sealing cooling channels in aluminum heat sinks and cold plates. This solid-state joining technology helps reduce process steps, stabilize joint quality, and optimize production costs while meeting strict technical requirements. FSW for Cooling Channel Structures In typical aluminum cold plate manufacturing, cooling channels are machined into the aluminum base material and then sealed with a thin aluminum cover plate. Compared with conventional methods such as side drilling with plug welding or TIG/MIG welding, FSW enables continuous sealing of the entire cooling channel in a single process. Because FSW does not melt the base material, it minimizes thermal distortion and reduces the risk of weld cracking. The resulting joints provide excellent water-tightness and flat surfaces suitable for mounting power modules, making FSW ideal for mass production of aluminum heat sinks, inverter cold plates, motor drivers, IGBT/SiC modules, battery cooling plates, and other high-power electronic components. Real-Time Monitoring and Process Optimization Stable FSW quality requires quantitative monitoring during the welding process, including parameters such as tool temperature, workpiece surface temperature, and spindle load. While post-weld visual inspection remains important, visualizing the phenomena occurring during welding is essential for accurate quality evaluation. With MULTI INTELLIGENCE®, tool temperature can be measured in real time during welding. Simultaneous measurement at three points enables optimal welding conditions to be selected and maintained, supporting stable quality and repeatable production performance. Please download the PDF brochure for more details, or contact Ohnoseiko Vietnam to receive consultation on FSW solutions tailored to your specific products and applications.

High-Precision Machining at Ohno Seiko Vietnam

High-Precision Machining at Ohno Seiko Vietnam Ohno Seiko Vietnam provides high-precision machining services based on Japanese manufacturing standards, supported by an integrated production system and strict quality control. We specialize in machining mechanical components that require high accuracy and stable quality, from prototyping to small- and medium-lot production. ■ Typical Machined Component Specifications Material: Carbon steel S45C Dimensions: 10 × 10 × 100 mm Machining tolerance: ±0.01 mm Production volume: 50–100 pcs per lot Machining Process Ohno Seiko applies a closed-loop machining process combining multiple operations to ensure dimensional accuracy and surface quality: CNC milling for precise shaping Wire-cut EDM for complex profiles, slots, and high-accuracy features Grinding to achieve final tolerance and dimensional stability ■ Strengths of Ohno Seiko’s Machining Capabilities High-precision machining based on Japanese technical standards, achieving accuracy up to ±5 μm Integrated machining system including machining centers, milling machines, lathes, wire-cut EDM, and grinding equipment Quality inspection in a temperature-controlled room (20℃ ±1℃) using Mitutoyo CMMs and specialized measuring instruments Skilled engineers trained in Japan, ensuring consistent quality and process compliance Reliable lead-time control for small- to medium-lot production (50–100 pcs) Cost optimization through production in Vietnam while maintaining quality equivalent to Japanese factories ■ A Reliable Precision Machining Partner in Vietnam With experienced engineers and advanced machining equipment, Ohno Seiko Vietnam supports customers in precision machining projects, from prototyping to mass production. Please contact Ohno Seiko for consultation on precision machining solutions tailored to your drawings, technical requirements, and production volume.

Precision CNC Milling of Brackets – OHNOSEIKO

Precision CNC Milling of Brackets – OHNOSEIKO OHNOSEIKO specializes in high-precision CNC milling of mechanical components such as brackets made from SUS303, achieving machining accuracy of ±0.01 mm. By utilizing advanced CNC milling machines, wire EDM, grinding equipment, and 3D inspection systems, OHNOSEIKO ensures high accuracy, stable quality, and reliable production efficiency. Overview In industrial manufacturing, mechanical components such as brackets require high precision and durability to ensure the overall performance of machinery and systems. OHNOSEIKO, a company dedicated to high-precision machining, supplies machine components that demand tight tolerances and consistent surface quality. With a modern equipment lineup and an experienced engineering team, OHNOSEIKO is capable of handling both small-lot orders and mass production, meeting diverse customer requirements across industries. Machining Processes & Equipment OHNOSEIKO operates a fully integrated in-house machining process using high-precision equipment from leading Japanese manufacturers: CNC Milling: Machines from Brother, OKK, OKUMA, Fanuc, and AKIRA-SEIKI are used for machining surfaces, slots, holes, and stepped features. Drilling & Tapping: Performed directly on CNC milling machines for screw holes and threaded assembly features. Wire EDM Cutting: Enables complex profiles with tight tolerances (±0.005 mm) while maintaining excellent surface finish. Grinding: Surface grinding with Nagase machines and cylindrical grinding with Maruei machines to achieve high flatness and superior surface quality. Inspection: Dimensional verification using Mitutoyo 3D coordinate measuring machines (CMM) ensures precise accuracy. Technical Capabilities Machining accuracy: ±0.01 mm Machinable materials: SUS303, SUS304, alloy steels (SKD11, S45C), aluminum (A5052, A6061, A7075), and more Quality management system: ISO 9001:2015, with full inspection prior to shipment Product Applications Brackets for automation systems and industrial robots Jigs, fixtures, inspection tools, and CNC machine components Measuring instruments and load-bearing parts requiring high stability Components for special-purpose machinery and OEM equipment OHNOSEIKO is committed to delivering high-precision CNC-milled components with reliable accuracy, on-time delivery, and Japanese-quality standards at optimized manufacturing costs in Vietnam. ■ For more details, please download the PDF or contact us directly for technical consultation.

OV-700 Smart Cabinet by OHNOSEIKO – A Precision Solution for Tool and Inventory Management

The OV-700 Smart Cabinet from OHNOSEIKO is an advanced solution for precise tool and consumables management, helping manufacturers reduce losses, enable fast traceability, and integrate inventory data into centralized management systems. Overview In machining and manufacturing plants, the management of tools and consumables is one of the areas most prone to losses if not properly controlled. Traditional methods such as manual logs, Excel spreadsheets, or open storage often result in misplaced tools, inaccurate inventory records, and time-consuming searches. As a precision machining company, OHNOSEIKO has firsthand experience with the challenges of managing cutting tools, measuring instruments, and consumables. Through daily operations, the company has accumulated extensive know-how in inventory control and loss prevention. These real-world experiences formed the foundation for the development of the OV-700 Smart Cabinet—a comprehensive digital solution for tool management in manufacturing environments. Key Features of the OV-700 Multi-compartment cabinet design with individual compartment access controlled by IC card Automatic logging of borrow/return history, including user name and timestamp Flexible user authorization by role or group Integrated software for data synchronization, inventory reports, and usage history Low-stock alerts with configurable minimum inventory thresholds Customizable storage for various items: cutting tools, measuring instruments, electronic components, and consumables Basic Technical Specifications Cabinet dimensions: W1000 × D700 × H1800 mm (customizable upon request) Number of compartments: 70 compartments Network connection: LAN (Ethernet) User interface: Touchscreen display Identification system: IC card (RFID) or PIN code Management software: OV-Manager (supports Excel and CSV reporting) Practical Applications CNC cutting tool management in machining workshops Shared storage for measuring and inspection equipment Inventory control of spare parts and components in assembly lines Monitoring consumables usage in medium to large-scale manufacturing facilities The OV-700 Smart Cabinet not only enables efficient tool control but also represents a significant step toward digital transformation in manufacturing inventory management. ■ For more details, please download the PDF brochure or contact us directly for consultation.

Precision Machining of Engineering Plastics | Ohnoseiko Vietnam

Precision Machining of Engineering Plastics | Ohnoseiko Vietnam Japanese-level precision – Stable machining and superior surface finish At Ohnoseiko Vietnam, we specialize in high-precision machining of engineering plastics such as PA, POM, and MC Nylon. The product shown in the image is a blue plastic block processed to 30×40×100mm, featuring deep pockets, through-holes, and 45° chamfers, all produced in one integrated machining process. Dimensional accuracy of ±0.02mm is consistently maintained. To prevent deformation and thermal expansion, which are typical challenges with plastic materials, we use dedicated clamping jigs and optimized cutting conditions. The process is performed using OKUMA, Mazak, and YCM machining centers (3-axis & 5-axis), in combination with CNC turning, wire-cut EDM, and 3D measurement systems for comprehensive quality control. Technical Specifications - Material: Engineering plastics (POM, MC Nylon, etc.) - Size: 30×40×100mm - Tolerance: ±0.02mm - Surface Roughness: Ra 0.4–0.8 - Machining Methods: Machining center, CNC lathe, wire-cut EDM - Equipment: Mazak / OKUMA / YCM 5-axis, 3D measuring instruments, image measuring systems Applications - Jig components - Conveyor guides - Robot hand parts - Electrical insulation components Not only for metals — we deliver “Japanese-quality cutting precision” even in plastics. Ohnoseiko Vietnam pursues high precision and superior quality in plastic machining, providing comprehensive support from prototyping to mass production.

Total Solution for High-Precision Jig Fixture Components

Total Solution for High-Precision Jig Fixture Components At Ohno Seiko Vietnam, we provide an integrated production system that combines machining, wire-cutting, and precision grinding for SUS303 stainless steel, achieving ±0.01mm accuracy and a mirror surface finish of Ra0.2–0.4. The process begins with machining to form the shape, followed by wire-cutting for precise grooves and holes, and finally precision grinding to ensure perfect parallelism and flatness. These high-precision brackets are widely used in industrial machinery components, fixture and jig mounts, robot arm attachments, and electronic device frames. Equipment & Processes - Machining Centers: OKUMA / Mazak (3-axis, 5-axis) - Wire-Cut EDM Machines: Seibu EDM - High-Precision Surface Grinding Machines - Quality Inspection: 3D Coordinate Measuring Machine (CMM) and image measurement system Technical Specifications - Material: SUS303 (stainless steel) - Dimensions: 40×50×60mm - Tolerance: ±0.01mm - Surface Roughness: Ra0.2–0.4 - Quantity: 20–30 pcs (supports small to medium lots) Main Applications - Brackets for industrial machinery - Robot components - Fixture and jig mounts - Electronic device components With Japanese-quality process management and a fully in-house production system, Ohno Seiko Vietnam ensures a stable supply of high-precision, high-reliability, and superior-finish jig fixtures. We meet the stringent accuracy requirements demanded by precision machining and automation industries.

Friction Stir Welding (FSW) Technology Helps Simplify Processes and Stabilize Production Quality

Ohno Seiko, with its factory in Vietnam, provides Friction Stir Welding (FSW) solutions for joining dissimilar materials and optimizing the assembly of cooling plates. Overview Friction Stir Welding (FSW) is a solid-state joining technology that does not melt the base materials. A rotating tool is pressed into the joint area, generating frictional heat and plastic flow to bond the materials together. This technology is especially suitable for joining dissimilar materials or light metals such as aluminum. Ohno Seiko applies FSW to reduce production steps in cooling plate manufacturing and ensure stable joints between different materials. Key Features - Minimal distortion joining and high precision since the materials are not melted - Capable of joining dissimilar materials - Simplifies the assembly process of cooling plates - Safe joining method that generates no spatter or harmful gases - Real-time monitoring of joint quality Technological Capabilities - Continuous temperature measurement at the tool’s pin and shoulder from the start to the end of the welding process - Quantitative monitoring of surface temperature and spindle load - Visualization of temperature data for quality evaluation and defect prevention - MULTI INTELLIGENCE function enables simultaneous measurement at three points to determine optimal welding conditions With its factory in Vietnam, Ohno Seiko is ready to support manufacturers in adopting FSW technology to enhance both product quality and production efficiency. Please download the detailed PDF or contact us for consultation and more information.

Milling and Wire Cutting: Capable of efficiently meeting the demands of small-batch mass production in Long An, Vietnam

Milling and Wire Cutting: Capable of efficiently meeting the demands of small-batch mass production in Long An, Vietnam We possess a diverse range of machining equipment, including milling machines, wire cutting machines, CNC lathes, grinding machines, and various other equipment. Depending on the drawing specifications and production status at any given time, we offer services ranging from single-part machining to small and medium-sized batch production, ensuring optimal efficiency. If you are looking for high-precision milling, wire cutting, and grinding services in Long An, Southern Vietnam, please contact us for detailed support. [Key Features] We specialize in machining and post-processing for a wide range of materials, such as iron, aluminum, stainless steel, tool steel alloys, Al-His, YXR, plastics, and many others. Our company has approximately 40 equipment in total, including NC milling machines, machining centers, CNC lathes, and grinding machines (both surface and cylindrical grinders), as well as wire cutting machines. With nearly 100 employees, including many highly qualified engineers, we are capable of performing complex machining processes, as well as handling both single-part orders and small batch mass production. [Related Industries] Telecommunications equipment Manufacturing equipment components Lithium battery-related components Jigs and fixtures And many other industries

SUS304 Coupling: Milling and Grinding Processing in Long An, Vietnam

SUS304 Coupling: Milling and Grinding Processing in Long An, Vietnam This is a representative product, a SUS304 coupling, processed by milling and finished with precision grinding. Additionally, we can machine a variety of other materials such as steel, SUS, aluminum, and more. If you're looking for machining services for components like couplings for telecommunications equipment or production machinery in Southern Vietnam, please feel free to contact us. [Key Features] We possess various equipment such as machining centers and CNC lathes, allowing us to machine both square and round parts. Moreover, we have a full range of grinding machines, including surface grinders, cylindrical grinders, and pedestal grinders, to handle post-machining finishing processes. We are capable of fulfilling small-scale production orders, such as parts for telecommunications devices or production equipment, by maximizing the use of our available equipment. [Related Industries] Telecommunications equipment Manufacturing equipment [Machining Equipment] Below are some of the machines used for processing SUS304 couplings: + Machining Centers: Okuma MB-46V, Brother S500Xd1, etc. + Grinding Machines: Toyoda IG300, etc. [About Ohno Seiko Vietnam] Ohno Seiko Vietnam specializes in machining materials such as steel, stainless steel, and aluminum, from single-part to small and medium-batch production. With an extensive range of equipment, including milling machines, lathes, machining centers, and grinding machines, along with a team of highly experienced engineers, we are confident in our ability to handle orders that are considered "moderate" in scale within the industry. "Japanese-quality manufacturing in Vietnam" – We provide precision single-part machining services with a comprehensive and seamless production process.

SKD11 Holder (CNC Turning, Milling, Wire Cutting) in Long An, Vietnam

SKD11 Holder (CNC Turning, Milling, Wire Cutting) in Long An, Vietnam We specialize in machining alloy tool steel such as SKD11, utilizing CNC lathes, milling machining centers, and wire cutting machines. This is a representative product of SKD11 holder machining, processed using CNC lathes, milling machining centers, and wire cutting machines. [Key Features] We specialize in machining tool steel with a fully integrated process from machining to heat treatment. For example, the holder can achieve a hardness of 58–52HRC after heat treatment. Material: SKD11 Dimensions: φ50mm x 40mm Precision: 0.005mm–0.01mm Quantity: 50–100 pieces [Related Industries] The product is widely used in molds and production equipment, particularly in areas requiring high wear resistance and good sliding capabilities. [Machining Equipment] The SKD11 holder is processed by the following equipment: CNC Lathes: Okuma Genos L250-e, Genos L250II-e, etc. Milling Machining Centers: Okuma MB-46V, etc. Wire Cutting Machines: Mitsubishi MV1200S, etc. [About Ohno Seiko Vietnam] Ohno Seiko Vietnam specializes in machining and heat treatment of alloy tool steel. With a wide range of equipment, including NC milling machines, machining centers, CNC lathes, and grinding machines, along with a team of highly experienced engineers, we are capable of meeting all precision machining requirements from our clients. With the motto "Japanese-quality manufacturing in Vietnam," we provide high-precision machining services from single-part components to small batch mass production.

Precision Guide Shaft (SKD11) - From Machining to Heat Treatment in Long Hau, Vietnam

Precision Guide Shaft (SKD11) - From Machining to Heat Treatment in Long Hau, Vietnam This is a representative product of precision guide shaft production made from SKD11 material. We offer a fully integrated production process, from machining operations such as turning and milling to heat treatment. Our company is capable of machining and heat-treating alloy tool steels like SKD11. If you are looking for a partner to machine alloy tool steel in Southern Vietnam, please feel free to contact us. [Key Features] We specialize in machining and heat treatment of difficult-to-machine materials such as SKD11. The precision guide shaft can reach a hardness of 58–62HRC after heat treatment. Material: SKD11 Hardness: 58–62HRC Dimensions: φ50mm x 80mm Precision: ±0.01mm Quantity: 1–100 pieces [Related Industries] We machine SKD11 for industries such as mold-making and cutting tools. [Machining Equipment] Below are some of the key machines used to produce the precision guide shaft (SKD11): CNC Lathes: Okuma Genos L250-e, Genos L250II-e, etc. NC Milling Machines: Okuma Genos M460-VE, Akira Seiki SV760, etc. [About Ohno Seiko] Ohno Seiko is capable of machining not only standard materials like steel, stainless steel, and aluminum, but also alloy tool steels such as SKD11, Al-His, and YXR (Matrix High-Speed Steel). We specialize in machining and heat-treating SKD11, which requires high precision and complex processes. If you are facing difficulties and need support for machining special materials, please contact us. "Japanese-quality manufacturing in Vietnam" – We provide high-precision machining services for component production.

Precision Machining: Complex Shapes and High Accuracy in Long Hau, Vietnam

Precision Machining: Complex Shapes and High Accuracy in Long Hau, Vietnam If you're facing challenges with machining mechanical components that have complex shapes and require high precision, contact us for detailed consultation and support. We specialize in machining high-precision and complex-shaped mechanical parts in Long Hau, Southern Vietnam. Long Hau is less than an hour's drive from Ho Chi Minh City, making it highly convenient for transportation. [Key Features] Ohno Seiko Vietnam is a machining factory equipped with a wide range of machines, including 10 lathes, 16 milling machines, 5 wire-cut machines, and EDM machines, as well as 11 grinding machines and surface grinders. We offer a fully integrated production process, from machining to post-processing steps such as anodizing, surface treatment (plating, lapping), and heat treatment. Additionally, we have two 3D measurement machines to ensure the quality of the final products. With extensive experience in machining complex shapes and parts requiring high precision, we are ready to support even the most challenging requests. [Machining Capabilities] Round Parts: Outer diameter up to φ500mm Square Parts: Width up to 350mm, length up to 2,000mm [Related Industries] Electronic components, IC-related components, IC chip transfer pallets Lithium battery-related components Specialty components for engine startersPrecision Machining: Complex Shapes and High Accuracy in Long Hau, Vietnam If you're facing challenges with machining mechanical components that have complex shapes and require high precision, contact us for detailed consultation and support. We specialize in machining high-precision and complex-shaped mechanical parts in Long Hau, Southern Vietnam. Long Hau is less than an hour's drive from Ho Chi Minh City, making it highly convenient for transportation. [Key Features] Ohno Seiko Vietnam is a machining factory equipped with a wide range of machines, including 10 lathes, 16 milling machines, 5 wire-cut machines, and EDM machines, as well as 11 grinding machines and surface grinders. We offer a fully integrated production process, from machining to post-processing steps such as anodizing, surface treatment (plating, lapping), and heat treatment. Additionally, we have two 3D measurement machines to ensure the quality of the final products. With extensive experience in machining complex shapes and parts requiring high precision, we are ready to support even the most challenging requests. [Machining Capabilities] Round Parts: Outer diameter up to φ500mm Square Parts: Width up to 350mm, length up to 2,000mm [Related Industries] Electronic components, IC-related components, IC chip transfer pallets Lithium battery-related components Specialty components for engine starters

(S45C) Plate Production by Turning and Milling in Long Hau, Vietnam

(S45C) Plate Production by Turning and Milling in Long Hau, Vietnam This is a representative product machined using both turning and milling methods. The S45C plate follows a standard process that combines both turning and milling. If you are looking for a partner for turning and milling in Long Hau, Vietnam, please feel free to contact us for detailed consultation and support. [Key Features] The plate has dimensions of Φ65x15mm and is made from S45C material (manufactured in Japan). It is one of our strengths to produce similar products through turning and milling processes. Ohno Seiko Vietnam owns 10 lathes (9 of which are NC lathes) and 16 milling machines. For more details, please refer to this link: https://en.nc-net.com/company/94349/equipment/ [Related Industries] The plate is widely used in various industries such as robotics, production equipment, food machinery, and many others. [Machining Equipment] Below are some of the key machines used to process the plate: CNC Lathes: Okuma Genos L250-e, Genos L250II-e, etc. NC Milling Machines: Okuma Genos M460-VE, Akira Seiki SV760, etc. [Materials] In addition to S45C, we can machine a variety of materials, including iron, aluminum, stainless steel, brass, copper, and more. [About Ohno Seiko] Ohno Seiko Vietnam not only owns 10 lathes and 16 milling machines but also has other equipment such as wire-cutting machines, grinding machines, and cylindrical grinders. This allows us to choose the most efficient machining method based on customers' drawings. With nearly 100 employees, including many experienced engineers, we are confident in our ability to handle any complex machining requests in Vietnam. If you have a drawing that is difficult to find a machining partner for in Vietnam, please contact us for detailed consultation and support.

Flange Machining (A5052) and Black Anodizing in Long Hau, Vietnam

Flange Machining (A5052) and Black Anodizing in Long Hau, Vietnam This is a representative product showcasing aluminum (A5052) machining and black anodizing. We machine flanges using aluminum (A5052) material. The flange machining process is carried out in-house using CNC lathes and NC milling machines, while the black anodizing process is handled by our partner's factory. If you are looking for a company capable of aluminum machining and anodizing in Southern Vietnam, please feel free to contact us for detailed support. [Key Features] This flange has dimensions of φ80x15mm and is machined using CNC lathes and NC milling machines. Our lathes can machine up to an outer diameter of φ500mm. For square components, our milling machines can process up to 350mm in width and 2,000mm in length. We can accommodate both single-piece orders and mass production, particularly for batches ranging from 1 to 100 pieces. [Machining Equipment] The flange product is machined using the following CNC lathes and NC milling machines: CNC Lathes: Okuma Genos L250-e, Genos L250II-e, etc. NC Milling Machines: Okuma Genos M460-VE, Akira Seiki SV760, etc. [Materials] We can machine a variety of aluminum materials, including A5052, A5056, A6061, etc. Please contact us for detailed consultation. [About Ohno Seiko Vietnam] Ohno Seiko Vietnam is a precision machining factory located in Vietnam, specializing in exports to Japan. As a precision machining company, we can meet the most stringent requirements of our customers. Additionally, we specialize in handling drawings that require post-processing such as anodizing and heat treatment. If you are interested, please feel free to contact us for further consultation. Thank you very much!

Precision Machining of Positioning Pins (SUS303) in Long An, Vietnam

Precision Machining of Positioning Pins (SUS303) in Long An, Vietnam This is a representative product showcasing the production of positioning pins made from SUS303 material. We manufacture high-precision positioning pins in Long An, Vietnam. If you are looking for precision machining services for stainless steel (SUS303) in Vietnam, please feel free to contact us for detailed consultation. [Related Industries] Positioning pins are used in industries such as jigs and fixtures, production equipment, robotics, and factory automation (FA): Jigs and fixtures Production equipment Robotics [Machining Equipment] SUS303 positioning pins are produced using CNC lathes and NC milling machines: CNC Lathes: Okuma Genos L250-e, Genos L250II-e, etc. NC Milling Machines: Okuma Genos M460-VE, Akira Seiki SV760, etc. [Machinable Materials] We can machine positioning pins from the following materials: SUS303, SUS304, SUS316, etc. [About Ohno Seiko Vietnam] Ohno Seiko Vietnam specializes in high-precision machining to Japanese standards in Long An, Vietnam. We are capable of handling both single-piece orders and mass production. If you are looking for a reliable partner for high-precision component machining in Vietnam, please feel free to contact us. We are honored to assist you.