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In-House Integrated Production from Aluminum Die Casting to Machining

We are equipped with state-of-the-art 420 to 800-ton die-casting machines, capable of manufacturing medium to large aluminum die-cast products. Since our founding, we have expanded our machining capabilities with 330 machine tools, including milling and lathe machines, and maintain strong partnerships with trusted surface treatment suppliers. This allows us to provide end-to-end production—from die casting to secondary machining and surface treatment—while ensuring stable quality through rigorous inspection systems. With a monthly production capacity of approximately 65,000 parts, we offer flexible lead times to meet customer demands. Our products are widely adopted across industries, including automotive. Key Features ✔ Integrated Production System Seamless processing from casting → precision machining → surface treatment, ensuring strict quality and delivery control. ✔ Wide Range of Die-Casting Machines 420–800-ton machines accommodate various product sizes (up to 6.5 kg). ✔ Post-Casting Machining 250 CNC lathes and 100 machining centers handle all secondary machining in-house. Equipment BD-V7EX800T & SD-420CH aluminum die-casting machines Shot blasting machines Quality Assurance & Production System ✔ Reliability-First Strict control across the entire manufacturing process. ✔ Short Lead Time Capability Integrated production optimizes efficiency for on-time delivery. ✔ Quality Management Rigorous checks at every stage: material selection → casting → machining → inspection. ✔ Advanced Technology High-precision die-casting machines ensure uniform quality even in fine details. Summary We specialize in medium-to-large aluminum die-cast products, offering end-to-end solutions from casting to precision machining and surface treatment. Our 420–800-ton machines, 250 CNC lathes, and 100 machining centers enable high-quality production with short lead times. Trusted by automotive, electronics, and other industries, we prioritize reliability through stringent quality control and optimized processes.

Measures against casting porosity defects in Aluminum Die casting - Utilizing Vacuum Systems and Spray Robots

What Is Porosity Defect? Porosity defects in aluminum die-casting refer to the formation of bubbles or voids inside the metal during the casting process. These defects reduce the strength and durability of components, negatively impacting performance and lifespan. Minimizing porosity is particularly crucial for aluminum die-cast components that require high reliability, such as those used in automotive and electronic applications. Main Causes of Porosity Defects Air Entrapment: Air can be trapped during the inflow of molten aluminum into the mold, forming bubbles inside the metal. Gas Generation: Moisture and impurities in the molten aluminum can produce gas, which becomes trapped within the metal. Uneven Cooling: Differences in cooling speed within the mold can lead to shrinkage voids. Improper Use of Mold Release Agent: Insufficient agent worsens metal flow, while excess leaves residues that contribute to porosity. Our Porosity Reduction Solutions We combine advanced technologies and process controls to minimize porosity: ✔Optimization and Standardization of Casting Conditions By setting the appropriate temperature, pressure, and injection speed based on material properties and product specifications, we ensure stable quality and reduce the risk of porosity. ✔Utilization of Vacuum Equipment Creating a vacuum inside the mold helps efficiently evacuate air and gas, suppressing the formation of porosity and voids. This method is particularly effective for complex-shaped products. ✔Improved Vent Design Optimizing the vent grooves in the mold allows for more efficient gas escape, improves molten metal flow, and prevents porosity. ✔Addition of Overflow Sections By adding overflow channels, excess gas can be discharged more effectively, preventing air pockets during casting. This improves internal product quality by reducing voids. Features of Yamaguchi’s Aluminum Die-Casting Supports products up to 6.5 kg Capable of thin-wall casting as small as 2–3 mm Equipped with die-casting machines from 420t to 800t, meeting a wide range of manufacturing needs Integrated in-house production, including post-casting precision machining, ensures both high quality and short delivery times Flexible production capabilities for both small-lot and mass production Supplies components for a wide variety of industries, including automotive Quality Assurance & Production System Quality Control System For each product number, a process quality control sheet (QC plan) is created to properly manage product quality. Advanced Equipment Shot blasting machines and precision tools guarantee uniform quality, even for intricate designs. Rapid Turnaround End-to-end production streamlines scheduling for on-time deliveries. Reducing porosity defects in aluminum die-casting is essential to ensure product strength, durability, and overall quality. At our company, we implement advanced technologies—including optimization of casting conditions, vacuum systems, improved vent designs, and added overflow sections—to minimize porosity. Furthermore, with die-casting machines ranging from 420t to 800t, we support flexible production for thin-walled (2–3 mm) and up to 6.5 kg products. Our integrated production system—from design to casting and precision machining—enables us to achieve stable quality and short delivery times.

Precision Lathe Processing for Small Components

We are a specialized manufacturer providing high-precision lathe processing and mass production for small components. With years of collaboration with Japanese companies, we leverage our technical expertise and quality control know-how to achieve lathe machining with ±0.01mm accuracy. We specialize in lathe processing for various materials, including steel, stainless steel, aluminum, copper, and engineering plastics. Utilizing state-of-the-art CNC and automatic lathes, we can efficiently handle both small-lot prototyping and mass production with high flexibility. Below, we introduce the key features of our lathe processing technology, which is optimized for high-volume production. Key Features of Yamaguchi’s Lathe Processing - High-Precision Machining: Leveraging the expertise of skilled engineers and extensive experience with Japanese companies, we achieve ±0.01mm accuracy, ensuring consistent quality that meets strict industry requirements, including automotive applications. - Wide Material Compatibility: We support lathe processing for various materials, including: Iron (SS400) Stainless steel (SUS303, SUS304) Aluminum alloy (A5052) Copper (C2600) Engineering plastics - Large-Scale Production Capability: With approximately 250 lathes, including CNC lathes, general-purpose lathes, and automatic lathes, we can mass-produce small components efficiently using automated processes, ensuring time and cost savings. - Strict Quality Control: Using advanced CMM (3D measuring machines), contour measuring instruments, and surface roughness testers, we conduct thorough quality inspections. Our quality management system complies with ISO 9001 standards, ensuring strict control over dimensional tolerances, surface finish, and mechanical properties. Quality Assurance & Production System - Strict Quality Management We employ the latest 3D and 2D measurement equipment to maintain precision throughout each production stage. This ensures dimensional accuracy and surface quality, even in mass production, guaranteeing consistent and reliable output. - State-of-the-Art Equipment & Skilled Expertise: With around 250 lathes, we utilize optimized machining methods to achieve high-precision, high-efficiency production for each component. Our modern equipment allows for large-scale manufacturing, meeting tight tolerances and strict industry standards. - Flexible Delivery & Lead Times: From prototyping to large-scale production, our efficient production management system allows us to deliver products in a short timeframe. By optimizing lathe processing workflows, we maximize efficiency and provide tailored production scheduling to meet customer demands. - International Quality Standards: We implement a strict quality control system that complies with ISO 9001, ensuring rigorous inspections at every stage of material and product processing. Why Choose Yamaguchi for Small Component Lathe Processing? Our company specializes in high-precision lathe processing and mass production of small components in Vietnam. With cutting-edge equipment and experienced engineers, we ensure exceptional quality and efficiency. With over 250 lathes and an optimized production management system, we can accommodate both prototyping and large-scale manufacturing with short lead times. Our ISO 9001-compliant quality management system guarantees stable, high-quality products that meet global industry standards. We serve a wide range of industries, including automotive, and provide high-quality small components from Vietnam to the global market. If you are looking for a trusted partner for high-precision lathe processing of small components in Vietnam, contact Yamaguchi!

Milling and Lathe Machining of Stainless Steel Components

Our company specializes in high-precision machining, including milling and lathe processing, utilizing the latest equipment to handle various materials such as stainless steel (SUS303, SUS304), special steels, aluminum (A5052), copper (C2600, C1100), and resins. With extensive experience working with Japanese companies, we ensure high-quality standards in accordance with Japanese requirements while also accommodating short lead times. Specifications Materials: Various stainless steels, including SUS303, SUS304, SUS316, and SUS430 Processing Capabilities: Milling, lathe machining, drilling, threading, surface finishing Precision: ±0.01mm Production Lot Sizes: Flexible handling from small-lot prototypes to large-scale mass production Processable Sizes: NC Lathe (X-Z): 450×1,000 mm Milling Machine (X-Y-Z): 1,050×510×460 mm Production Capacity: Over 1 million parts per month Quality Management System Precision product inspection using high-accuracy measuring devices (3D and 2D coordinate measuring machines) Strict quality assurance process: Full inspection based on ISO 9001-compliant standards Production Equipment & Technical Capabilities Large-scale production capacity with 250 lathes and 100 milling machines Short lead-time options: Rapid response from prototyping to mass production Delivery Capability High production capacity enables short lead-time fulfillment for large-volume orders Flexible production line adjustments per project to ensure smooth shipments We leverage the latest equipment to achieve high-precision milling and lathe processing for various materials, including stainless steel (SUS303, SUS304). We flexibly accommodate orders from small-lot prototypes to large-scale mass production, boasting a production capacity of over 1 million parts per month. Additionally, we maintain an ISO 9001-compliant quality control system, implementing full inspections using precision measuring equipment. With 250 lathes and 100 milling machines, we handle mass production while ensuring short lead times from prototyping to mass production. For stainless steel milling and lathe processing in Vietnam, please contact Yamaguchi!

Aluminum Die Casting Technology for Small-sized Products Using the SD-420CH Machine

At Yamaguchi, we utilize the SD-420CH aluminum die casting machine to cast small-sized products ranging from 0.4 to 2.0 kg. 【Specifications】 Supported Weight: Aluminum products weighing 0.4 to 2.0 kg (smaller products can be cast using multi-cavity molds). Maximum Size: 450 × 400 × 250 mm Production Capacity: ~25,000 units per month 【Quality Assurance & Production System】 1. Quality Control System We develop Quality Control Plans (QC Plans) for each product code, ensuring strict quality management. 2. Equipment & Technical Capability - Our company has introduced state-of-the-art casting equipment, enabling the production of high-precision and stable aluminum die-cast components. - The SD-420CH machine enables fast production of products up to 450 × 400 × 250 mm. - Our multi-cavity mold support allows for efficient manufacturing of small components. - For medium-sized products, we employ the BD-V7EX 800T machine, capable of casting high quality products weighing 2.0 kg to 6.0 kg. - Our flexible production system allows us to meet diverse needs, from small to medium-sized products. 3. Delivery Capability We can accommodate short lead times and flexibly handle mass production. Our supply system is tailored to meet our customers' production plans. Our company leverages the SD-420CH machine to precisely cast small-sized aluminum die-cast products (0.4 - 2.0 kg). With multi-cavity mold support, we can also mass-produce even smaller components. Our monthly production capacity is approximately 25,000 units, and we excel in quick delivery. Furthermore, we have strengthened our quality management system, implementing thorough control based on QC plans. For medium-sized products, we utilize the BD-V7EX 800T, establishing a stable supply system capable of meeting a wide range of product needs.

Aluminum Die Casting up to 6.5kg

Yamaguchi possesses advanced aluminum die-casting technology, capable of producing high-precision aluminum die-cast products weighing up to 6.5kg for the automotive industry and various other sectors. We meet mass production demands with a production capacity of 65,000 products per month. With cutting-edge equipment, Yamaguchi meets the diverse needs of various industries, providing both single-unit proudction and large-scale manufacturing. Our strength lies in the ability to produce components of various shapes and sizes, up to approximately 6.5kg. If you are looking for aluminum die-casting services in Vietnam, contact us! Features of Yamaguchi's Aluminum Die-Casting Technology: ✅ Support product weights up to 6.5 kg. ✅ Capable of thin-wall casting as thin as 2-3mm. ✅ Die-casting machines ranging from 420 tons to 800 tons, accommodating diverse manufacturing needs. ✅ Production capacity of approximately 65,000 units per month. ✅ Precision post-casting machining in-house, ensuring high quality and shorter delivery times. ✅ Supply components for various industries, especially the automotive sector. Equipment for Aluminum Die-Casting: 🔹 Aluminum die-casting machine BD-V7EX800T 🔹 Aluminum die-casting machine SD-420CH 🔹 Elemental Analyzer 🔹 Shot blasting machine At Yamaguchi, product quality is our top priority. We conduct thorough raw material inspections using elemental analyzer. Additionally, our shot blasting process enhances finishing precision, ensuring high uniformity even for complex-shaped components. With the capability to perform aluminum die-casting for products weighing up to 6.5kg, combined with modern equipment and advanced technology, Yamaguchi delivers high-quality components for the automotive industry and other sectors. Furthermore, our fully integrated in-house production system covers casting to precision machining, allowing us to meet the demands of complex designs and high-precision specifications.

Aluminum Die Casting Technology to Minimize Flow Marks

Aluminum die-casting is a precision manufacturing technology ideal for producing thin-walled parts and complex shapes. In recent years, the demand for aluminum die-cast products has surged in the automotive and home appliance industries, where weight reduction is advancing, requiring high-precision and efficient manufacturing. However, defects such as “flow marks” that occur during the manufacturing process remain a challenge. At our company, we address this challenge through proprietary technology that suppresses the occurrence of flow marks, utilizing a wide range of die-casting machines from 420 to 800 tons. Our production system, which supports product weights up to 6.5 kg and wall thicknesses of 2–3 mm, provides high-quality aluminum die-cast products from design through to final completion. Features ✅Manufacturing Technology That Minimizes Flow Marks + Strict temperature control of molds and molten metal to improve fluidity. + Optimized and standardized casting conditions (temperature, pressure, injection speed) to ensure consistent quality. + Reduced gas defects and flow marks by using vacuum systems to remove air from within the mold. + Improved venting structures with optimally placed vents for efficient gas evacuation. + Improved mold filling by adding overflow mechanisms that effectively release excess gas. + Regular mold maintenance, including cleaning and replacement of worn parts, to maintain optimal mold condition. ✅Flexible Production Capabilities with a Wide Range of Machinery + Equipped with die-casting machines from 420 to 800 tons, capable of producing parts weighing up to 6.5 kg and supporting thin-walled designs of 2–3 mm. ✅High-Efficiency Production Through Integrated Processes + Full in-house production from design and die-casting to secondary processing and finishing shortens lead times and ensures efficient delivery. Specifications - Weight: Up to 6.5 kg - Wall Thickness: 2–3 mm - Equipment Used: 800-ton BD-V7EX die-casting machine, SD-420CH die-casting machine, spray robots, vacuum equipment, mold release agent mixers, shot blasting machines, rotary electric furnaces Quality Assurance and Production System - Thorough Quality Control Utilization of various inspection equipment, including material composition analyzers, ensures consistent product quality. - Advanced Equipment and Technical Expertise Capable of handling complex shapes and precision components using cutting-edge die-casting machines, vacuum systems, shot blasting machines, and more. - Fast delivery Thanks to our integrated production system, we can manufacture and deliver with short lead times, always aligning with our customers' schedules. Our aluminum die-casting technology provides solutions that significantly reduces the occurrence of flow marks, enabling the production of high-quality products. By thoroughly managing mold and molten metal temperatures, optimizing casting conditions, and leveraging vacuum technology and enhanced gas venting structures, we greatly reduce surface defects. Furthermore, by leveraging 420t to 800t die-casting machines and establishing an integrated production system from design and casting to secondary processing and finishing, we achieve stable quality and short lead times. Going forward, we will continue to drive technological innovation and process improvements, delivering high-precision aluminum die-cast products with minimal flow marks to meet the needs of a wide range of industries, including automotive and home appliances.

Aluminum Die-Casting Process Minimizes Mold Sticking Problems

"Sticking" refers to the phenomenon in die casting where molten aluminum adheres to the surface of the mold. This issue significantly impacts productivity and quality in die casting. Main Causes of Sticking: 🔹 Uneven Temperature Distribution If the mold temperature is not properly controlled, molten aluminum is more likely to adhere abnormally to the mold surface. 🔹 Improper Use of Release Agents Insufficient or improper application of release agents can cause the product to stick to the mold, making removal difficult. 🔹 Substandard Mold Material and Surface Treatment If the mold surface is not properly treated, the friction between the aluminum and the mold increases, leading to sticking. Problems Caused by Sticking: ❌ Reduced Product Quality Surface defects on finished products can deteriorate performance, which is especially critical for automotive parts and electronic control components requiring high precision. ❌ Reduced Production Efficiency Frequent removal of stuck aluminum from molds slows down production significantly. ❌ Shorten Mold Lifespan Sticking can damage the mold, leading to the need for new molds and increased costs. Our Countermeasures Against Sticking ✅ Optimal Mold Release Agent Selection and Spray Robot Utilization: We select release agents suitable for each product and process, and apply them evenly using spray robots. Fine mist spraying improves cooling efficiency and enhances mold durability. ✅ Regular Mold Maintenance: Scheduled maintenance ensures early detection and removal of aluminum buildup and undercut issues, preventing sticking and operational troubles. ✅ Hard Coating (Tungsten Coating) application: Applying tungsten coatings to mold surfaces improves wear and heat resistance, further enhancing sticking prevention. ✅ Continuous Improvement of the Production Process: We regularly review and refine our processes to identify and eliminate sticking-prone conditions, maintaining a stable production system. Thanks to these sticking prevention strategies, our aluminum die-cast products maintain high quality, durability, and functionality. We have earned strong trust, particularly in high-precision and high-durability applications such as the automotive industry. Features of Yamaguchi’s Aluminum Die-Casting Technology - Equipped with die-casting machines ranging from 420 to 800 tons, capable of handling diverse production needs. - Capable of handling product weights up to 6.5 kg. - Monthly production capacity of approximately 65,000 units. - Post-casting precision machining is carried out in-house, ensuring high quality and short lead times. Sticking is a critical issue in aluminum die-casting that affects both quality and productivity. Our company tackles this problem through optimal mold release agent selection, the use of spray robots, regular mold maintenance, hard coating applications, and ongoing production process improvements. These efforts enable us to deliver aluminum die-cast products with high quality, excellent durability, and stable performance. Through these measures, our aluminum die-cast products achieve high quality, excellent durability, and stable performance, earning us significant trust in fields requiring high precision and durability, such as the automotive industry. We will continue to strive for ongoing technological innovation and quality improvement to provide our customers with even higher-performance aluminum die-cast products.

Aluminum Die Casting with Minimized Discoloration

“Discoloration” refers to a phenomenon where the surface color of metal changes due to manufacturing processes or environmental factors. In aluminum die-casting, discoloration may occur on the surface of parts after casting, and this significantly affects product quality and customer satisfaction. In particular, for products where appearance and finish are crucial, suppressing discoloration is extremely important. Main Causes of Discoloration in Aluminum Die-Casting - Oxidation Reactions During Casting Aluminum is highly prone to oxidation. Exposure to oxygen during casting or cooling can oxidize surfaces, causing color changes. - Improper Use of Mold Release Agents Mold release agents are essential for separating the product from the die-casting mold. However, if the composition is unsuitable, chemical reactions can occur during casting, resulting in discoloration. Our Discoloration-Suppression Technologies Discoloration is a major challenge in aluminum die-casting, but it can be mitigated with proper technology and process control. Utilizing our years of experience and technical expertise, we have established a manufacturing process that minimizes discoloration. Key measures include: ✔ Regular flux treatment to remove oxides and impurities from molten aluminum. ✔ Precision spray robots that apply release agents uniformly, preventing water droplet retention and black residue. ✔ Optimized and standardized casting conditions for stable production environments. ✔ Strict control of molten metal and mold temperatures during casting. Features of Yamaguchi’s Aluminum Die-Casting Our aluminum die casting technology differentiates itself from other companies in the following aspects: Wide Range of Size Compatibility: Equipped with die casting machines ranging from 420t to a maximum of 800t, we can handle various product sizes, both large and small. Integrated Production System: By performing everything from casting to precision machining and final finishing within our own factory, we achieve both quality assurance and short lead times. Equipment Aluminum Die-Casting Machine BD-V7EX800T Aluminum Die-Casting Machine SD-420CH Shot Blasting Machine Quality Assurance and Production System Quality Control System: We implement a strict quality management process, conducting thorough visual and dimensional inspections at every stage from casting to finishing. Facilities and Technical Capabilities: Utilizing state-of-the-art die-casting machines and shot blasting equipment, we ensure high-quality consistency even in complex-shaped products. Delivery Capability: Our integrated production system allows us to optimize scheduling and provide flexible and prompt delivery. Suppressing discoloration in aluminum die-cast products is extremely important for maintaining quality and improving customer satisfaction. At our company, we take measures such as flux treatment to remove impurities, optimal release agent application using spray robots, standardization of casting conditions, and thorough temperature management to minimize the occurrence of discoloration. Furthermore, with die-casting machines ranging from 420t to 800t and a fully integrated production system, we ensure stable quality and rapid delivery. Going forward, we will continue to focus on technological innovation and quality improvement to provide high-quality aluminum die-cast products with minimal discoloration.

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