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High-frequency quenching
Our company aims to improve technology by accumulating a vast amount of processing data, such as the shape of processed items, frequency, and the depth of heat treatment layers, and we will respond to all customer needs, including the creation of custom coils.
Introduction to quenching using high-frequency induction heating, a technology that has been around for a long time and was also used by swordsmiths.
First, "quenching" is a heat treatment technique that involves rapidly heating steel components and then cooling them quickly in water or other mediums, making the components hard and strong. The process of quenching using high-frequency induction heating is called "high-frequency quenching." While hardening steel components can make them brittle, applying quenching only to the surface while leaving flexibility in the interior (maintaining a state where the outside is hard and the inside is soft) can enhance strength. 【Features】 ■ Hardens and strengthens components by rapidly heating steel parts and then cooling them quickly in water or other mediums. ■ Improves strength by applying quenching only to the surface and retaining flexibility in the interior. *For more details, please refer to the PDF document or feel free to contact us. ★ For inquiries by phone, please call: Osaka Headquarters → TEL: 072-991-1361 Nagoya → TEL: 052-322-1361 Tokyo → TEL: 03-5472-1361 *When calling, please mention "Ipros was seen." Operating hours: Monday to Friday, from 9 AM to 5 PM.
Due to the short processing time, the cycle time is also reduced! It is a quenching method that consumes less energy and has excellent controllability.
We would like to introduce the relationship between our high-frequency quenching and other heat treatment methods. High-frequency quenching can be considered an efficient heat treatment method due to its short processing time, resulting in minimal distortion. Because the processing time is short, the cycle time can also be reduced. The equipment cost is comparable to that of nitriding treatment, but it achieves a deeper hardened layer. Additionally, because it consumes less energy, running costs can be saved. 【Features】 ■ Efficient with minimal distortion due to short processing time ■ Reduced cycle time ■ Equipment cost is comparable to nitriding treatment, but achieves a deeper hardened layer ■ Lower energy consumption leads to cost savings ■ Excellent controllability *For more details, please refer to the PDF document or feel free to contact us. ★ For inquiries by phone, please call: Osaka Headquarters → TEL: 072-991-1361 Nagoya → TEL: 052-322-1361 Tokyo → TEL: 03-5472-1361 *When calling, please mention "Ipros" for reference. Operating hours: Monday to Friday, 9 AM to 5 PM.
![[Case Study 4 on Heat Treatment Challenges] A must-see for those struggling with tolerances due to distortion!](https://image.mono.ipros.com/public/product/image/52d/2000748353/IPROS57456753566607215271.png?w=280&h=280)
Control over the total process is necessary for distortion! The factors causing dimensional changes are various.
In recent years, the precision required for parts has become more advanced, and it is not uncommon for tolerances in drawings to be specified at less than a micron. Incorporating dimensional tolerances is a challenge, but when heat treatment is applied, dimensional changes will inevitably occur to some extent. There are various factors involved, but broadly speaking, two main causes can be identified: "dimensional changes due to the release of residual stress" and "dimensional changes due to structural transformation." It would be simple if we could just set a grinding allowance and achieve the dimensions in the final process, but a larger grinding allowance increases the amount of work required, and there are some features, such as knurling or surfaces with subtle angles, that are difficult to correct. Control over distortion requires a total process approach, and our company is engaged in efforts and development to minimize distortion for various parts. In particular, when changing processes from atmospheric treatment to high-frequency quenching, significant effects can be expected. If you are facing issues with distortion, please feel free to consult us. *For more details, please refer to the PDF materials or feel free to contact us.*
We would like to introduce our company's "shaft" processing examples.
【High-Frequency Hardening Case Lineup】 ■ Intermediate Joint High-Frequency Hardening ■ φ150 Shaft High-Frequency Hardening ■ Large Shaft High-Frequency Hardening 【Laser Hardening Case Lineup】 ■ High-Frequency Hardened Shaft Keyway Bottom Laser Hardening ■ Rotating Shaft Laser Hardening ■ Spindle Laser Hardening ■ Small Diameter Ball Screw Keyway Laser Hardening ■ Piston Shaft Laser Hardening ■ Thin-Walled Hollow Bolt Spiral Laser Hardening ■ Large Tapered Roll Laser Hardening 【Laser Cladding Case Lineup】 ■ High-Speed Laser Cladding ■ Shaft with Keyway Laser Cladding ■ Repair Laser Cladding for Shaft with Keyway ■ Center Pin Laser Cladding Repair
We would like to introduce our company's "plate" processing examples.
【High-Frequency Hardening Case Lineup】 ■ L-Shaped Plate High-Frequency Hardening 【Laser Hardening Case Lineup】 ■ Fan-Shaped Plate Laser Hardening ■ L1200×10t Plate Laser Hardening ■ Knurled Surface Laser Hardening ■ Truck Plate Tip Laser Hardening ■ Wide Laser Cladding ■ Drill Hole Laser Cladding Repair
We would like to introduce examples of our "other shapes" processing.
【High-Frequency Hardening Case Lineup】 ■ Gripper Pit High-Frequency Hardening 【Laser Hardening Case Lineup】 ■ Eyebrow Type Piston A Laser Hardening ■ Complex Shape Block Laser Hardening ■ Head Wrench Mounting Part Laser Hardening ■ Convex End Face Laser Hardening ■ Stopper Tip Laser Hardening ■ Taper Cone Outer Circumference Laser Hardening ■ Chuck Raw Jaw Laser Hardening ■ Small Holder Laser Hardening 【Laser Cladding Case Lineup】 ■ Wide Laser Cladding
単品、量産、試作、大型品まで自社製コイルで対応する高周波焼入れ事例集
耐摩耗性、疲れ強さ、じん性の向上を目的とした鋼の表面硬化法として広く活用されている高周波焼入れの事例をご紹介します。 【事例ラインアップ】 ■ヘリカルギヤ一歯移動歯先高周波焼入れ ■Φ720ギヤ歯底一発高周波焼入れ ■L字プレート高周波焼入れ ■中間ジョイント高周波焼入れ ■スピンドルインターナルギヤ高周波焼入れ ■リングガイドウェイ高周波焼入れ ■ウォーム軸一歯回転高周波焼入れ ■φ150シャフト高周波焼入れ ■大型レバー高周波焼入れ ■ラックギヤ高周波焼入れ ■グリッパーピット高周波焼入れ ■大型シャフト高周波焼入れ ■大型リング溝高周波焼入れ
We can accommodate special shapes as we have a large number of coils!
【Conventional Issues】 We were requested to respond to a very short delivery time for high-frequency hardening of single-unit helical gears. Due to the nature of single-unit helical gears, it was necessary to manufacture coils urgently. 【Response from Fuji High Frequency】 We have thousands of types of coils tailored to various modules, and even if there is no coil that fits the shape, we can quickly make adjustments in-house. We were able to meet the delivery time within one and a half days. 【Specifications】 Dimensions: M18×80T×340W×φ1440 Material: SCM435 Depth: 2.0mm or more at PCD Hardness: Hs65–75
Powerful heat treatment! Instant high-frequency hardening!
【Conventional Issues】 Until now, due to the material being S45C, one-tooth induction hardening was performed, which took about 5 hours for high-frequency heat treatment. To reduce heat treatment costs, a change in material was proposed (S45C ⇒ SCM440). 【Response from Fuji High Frequency】 With our 600KW high-frequency oscillator, it is now possible to perform one-shot hardening down to the tooth base, reducing the heat treatment time from the conventional 5 hours to 0.5 hours, leading to a reduction in heat treatment costs. 【Specifications】 Dimensions: M12 × 60T × 250W × φ720 Material: SCM440 Hardness: Hs60–70
High-frequency hardening can be done with internal gears!
【Conventional Issues】 When carburizing and quenching, unnecessary parts become hard, making post-processing difficult. Additionally, even when selecting high-frequency single-shot quenching to reduce costs and lead times in heat treatment, significant distortion occurs. 【Response from Fuji High Frequency】 To address these issues, we performed surface hardening of one tooth of the internal gear. By not hardening unnecessary parts, post-processing became easier, and sufficient hardened layer depth was achieved. 【Specifications】 Dimensions: MP8×100W×385L Material: S45C Hardness: Hs65 Depth: Over 2mm
It is high-frequency hardening, an essential component for line equipment!
【Conventional Issues】 It was a high-frequency hardening project for the V-shaped surface of the ring's outer circumference with a short delivery time. However, due to the special shape of the hardened area, it was necessary to quickly manufacture a coil that matched the V shape. 【Response from Fuji High Frequency】 Since we manufacture coils in-house, we can produce coils and perform hardening within one and a half days. Additionally, using our long-standing expertise in bearing hardening, we can achieve low-distortion hardening through high-frequency moving hardening. 【Specifications】 Material: SUS440C Hardness: HRC55 Depth: 2.0mm or more Size: φ1109×24W
Our high-frequency hardening equipment can accommodate shafts up to 4 meters in length!
【Background】 In the high-frequency hardening of a large shaft with an outer diameter of φ150 and a length of L1700, there was a request for a hardened layer depth of 3mm and to minimize distortion as much as possible after hardening. 【Response from Fuji High Frequency】 By using our unique shaft hardening method and applying high-frequency hardening, we achieved both the occurrence of distortion and a deep hardened layer depth. Additionally, this equipment can accommodate vertical hardening up to 4m. 【Specifications】 Material: S45C Hardness: HRC58 Depth: 2mm Size: φ150×L1700
It is possible to perform high-frequency hardening on levers larger than those of a person!
【Background】 In partial quenching of large, specially shaped products, it is necessary to manufacture special-shaped coils to perform high-frequency treatment according to the drawings. Additionally, a large high-frequency quenching machine capable of handling this quenching is also required. 【Fujikou High Frequency's Response】 Our company manufactures coils in-house, so we can produce such special-shaped coils with short lead times and low costs. We also specialize in large products, and if the project can fit within our factory, we can almost always accommodate the quenching. 【Specifications】 Material: S45C Hardness: HRC58 Depth: 3mm
We have a high-frequency oscillator with high output capacity, so large-sized workpieces can also be subjected to high-frequency hardening!
【Background】 To perform induction hardening on a shaft with an outer diameter of φ940, a high-frequency oscillator with a large output capacity is necessary. This limits the number of companies capable of doing so even within the country. 【Response from Fuji High Frequency】 Using a large high-frequency oscillator of 6KHz×600KW makes it possible to perform induction hardening on large shafts with an outer diameter of φ940. Additionally, since a deep hardened layer is required, the frequency of 6KHz becomes important. 【Specifications】 Dimensions: φ940×850L Material: S45C Hardness: HRC58 Depth: 5mm
