江戸川鍛工 List of Products and Services

Friction stir welding is a technology that uses heat generated by friction to join metals together. The strength of the joint is equal to or greater than that of the base material. Therefore, it is a joining method that allows for the use of high-durability metals only in necessary areas, contributing to overall cost reduction by completing parts using friction stir welding. 【Features】 ■ It is possible to supply complex-shaped parts by combining with forged products! ■ By friction stir welding metals of different diameters, expensive materials can be used only in necessary areas, while the other can be replaced with cheaper materials. ■ For products with shapes that are difficult to process as a single piece, dividing them into two parts and processing one part before friction stir welding makes processing easier. ■ By friction stir welding materials of different diameters, it is possible to reduce material and processing costs compared to machining from round bars. *For more details, please download the PDF or contact us directly.

• Processing Contract

Heated steel is placed on the lower die and struck with an upper die accelerated by compressed air to achieve the desired shape. Skilled operators can manipulate the force, frequency, and movement to create products of various shapes. By applying high pressure instantaneously after heating, it is possible to stretch the metal into the fine details of the die, making it suitable for forming complex shapes. Additionally, striking with a hammer densifies the internal structure of the metal, which has the benefit of eliminating internal defects.

• Contract manufacturing

By joining the blade section and the shaft section through friction welding, we have made the shaft section from inexpensive steel material, achieving a reduction in material costs. Unlike welding, this method allows for the joining of dissimilar metals while maintaining strength, making it suitable for components that require high strength. 【Product Specifications】 ■ Turbine Wheel Shaft 　● Material: INCONEL + SCM440 　● Size: Joint section Φ38 x Φ50

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【Consideration for the Earth's Environment】 The entire company participates in "Eco Action 21" and is actively and voluntarily engaged in environmental initiatives, continuously striving for sustainable production and manufacturing. 【Low-Impact Friction Welding Machine for People and the Earth】 Friction welding processing does not generate spatter or fumes, and the occurrence of sparks is extremely low, providing a better working environment compared to other welding methods. Additionally, since carbon dioxide emissions are very low, it can be said to have a low impact on the Earth's environment.

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The parts joined by friction stir welding are characterized by high strength and precision. By using frictional heat and high pressure, impurities at the joint surface are expelled, allowing the entire contact surface to be joined, resulting in a joint that is stronger than that achieved through welding. The tensile strength of the joint area processed by friction stir welding becomes stronger than that of the base material, and when a tensile test is conducted, the fracture occurs in the base material rather than at the joint.

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Here is an introduction to the main equipment used in the factory of Edogawa Forging Co., Ltd. In the forging factory, we have equipment such as the "High-Speed Air Drop Hammer," "Forging Press," and "Friction Press." Additionally, in the friction welding factory, we have the "Toyota Automatic Loom Friction Welding Machine," and in the machine shop, we are equipped with machines like "Milling Machines." 【Equipment Owned (Excerpt)】 ■ Forging Factory - High-Speed Air Drop Hammer - Forging Press - Friction Press - Trimming Press - Rotary Heating Furnace - Billet Heater IS-ST-600/2 *Please feel free to contact us.

• Forging Machine

Here are some examples of our company's "friction welding products." We manufacture "shafts" that combine processed parts and round bars weighing 2-3 kg, as well as those that combine forged parts and round bars weighing 8-33 kg. Additionally, we have "gears" weighing 3 kg that combine two forged parts, and "pipe fittings" that are approximately 2-4 m long. We can also join different metals, such as stainless steel and iron, in addition to iron and iron. 【Examples of Achievements】 ■ Shaft: 2-3 kg (processed part + round bar), 8-33 kg (forged part + round bar) ■ Gear: 3 kg (forged part + forged part) ■ Pipe fitting: approximately 2-4 m ■ Rod: 2-86 kg ■ Anchor bolt: 1.4 kg ■ Axle shaft *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

We would like to introduce the work process of friction welding products at Edogawa Kanko Co., Ltd. First, the materials are cut, heated, forged, and then the processed products are received, followed by the execution of the friction welding work. After friction welding, the products undergo heat treatment, shot blasting, and inspection before shipment. 【Advantages】 ■ By performing friction welding on materials of different diameters, it is possible to reduce material and processing costs compared to machining from solid round bars. ■ If integral processing is difficult, dividing the material and performing friction welding makes processing easier. ■ Since different metals can be joined, it is possible to reduce costs by using high-priced materials only in the necessary parts. *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing

We would like to introduce examples of our company's "forged products." We manufacture "bevel gears" weighing 0.7 to 5.7 kg and "flanges" weighing 1.3 to 5.2 kg. We also produce "rods," "crankshafts," "pinion gears," and "scaffolding hardware." Please feel free to consult us when you need assistance. 【Examples of Achievements (Excerpt)】 ■ Bevel Gears: 0.7 to 5.7 kg ■ Flanges: 1.3 to 5.2 kg ■ Rods: 0.07 kg ■ Crankshafts: 0.8 to 10.9 kg ■ Pinion Gears: 0.8 to 4.7 kg ■ Wheel Shafts: 2.8 to 8.9 kg *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce the manufacturing process of forged products at Edogawa Kanko Co., Ltd. First, materials are received, followed by cutting and heating processes, and then we proceed to the forging process, using forging presses, hammers, and friction presses for the work. After trimming, heat treatment, and shot blasting, the products undergo magnetic particle inspection before shipping. 【Process Steps】 ■ Material Receipt ■ Cutting ■ Heating ■ Forging: Forging Press, Hammer, Friction Press ■ Trimming ■ Heat Treatment ■ Shot Blasting ■ Inspection: Magnetic Particle Inspection ■ Shipping

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Edo River Forging Co., Ltd. has expanded its business since its establishment in September 1918 to include forging, painting, friction welding, and mold departments. We supply forged products across a wide range of fields, primarily focusing on agricultural machinery parts, construction machinery parts, automotive parts, and other industrial machinery parts. Moving forward, we aim to continue our efforts without neglecting challenges and growth, striving for high-quality product manufacturing, and contributing broadly to society through our business partners. 【Business Activities】 ■ Forging Department: General steel, special steel, stainless steel die forging ・ Agricultural machinery parts, construction machinery parts, and other precision forging and processing ■ Friction Welding Department: Friction welding of general steel, special steel, stainless steel, etc. ■ Mold Department: Production of molds for hammers and presses *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing

Forging is a technique that involves applying force to metal to change its shape (forming) while also strengthening the metal structure. In simple terms, it means striking (hammering) iron to shape it while making it stronger, where the "tan" in "tanzou" refers to the "tan" in "training," meaning to forge. By striking, the gaps in the solid are eliminated, creating one strong solid, and when hot, it can easily be transformed into various shapes. 【Lineup (partial)】 ■ Gears 0.7–5.7kg ■ Flanges 1.3–5.2kg ■ Lift Cranks 1.6–5.2kg ■ Rods 0.07kg ■ Crankshafts 0.8–10.9kg *For more details, please refer to the related links or feel free to contact us.

• Press Dies

Friction stir welding is a technology that uses heat generated by friction to join metals together. The strength of the joint is equal to or greater than that of the base material. Our company introduced friction stir welding machines early on, enabling us to supply complex-shaped parts in combination with forged products. 【Advantages】 ■ By friction stir welding dissimilar diameter materials, we can reduce material and processing costs compared to machining from solid round bars. ■ For products with shapes that are difficult to process as a single piece, we can divide them into two parts, process one part, and then join them using friction stir welding, making processing easier. ■ By friction stir welding metals of different diameters, expensive materials can be used only where necessary, while cheaper materials can be substituted elsewhere. *For more details, please feel free to contact us.

• Processing Contract