Quenching Product List and Ranking from 5 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

Quenching Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

  1. NAPP工法技術研究会 Tokyo//Other construction industries
  2. ネツレン　高周波熱錬 Tokyo//Building materials, supplies and fixtures manufacturers
  3. メイネツ Aichi//others
  4. 4 アイテック Gifu//Other construction industries
  5. 4 遠州熱研 Shizuoka//others
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Quenching Product ranking

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

  1. High-frequency hardening of the rotary wheel NAPP工法技術研究会
  2. Netsuren "Induction Heating Equipment" High-Frequency Quenching ネツレン　高周波熱錬
  3. Surface hardening heat treatment method "Nitriding Quenching" アイテック
  4. High-frequency hardening of sintered alloy parts NAPP工法技術研究会
  5. 4 "Partial high-strength steel" high-frequency hardening ネツレン　高周波熱錬

Quenching Product List

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Surface hardening heat treatment method "Nitriding Quenching"

Surface hardening heat treatment method "Nitriding Quenching"

Heat treatment technology that finishes thin materials without distortion and with a hard finish! Also accommodates short delivery times.

This is a new surface hardening heat treatment method that allows nitrogen to penetrate and diffuse into steel, followed by quenching from the austenite state. By introducing nitrogen and performing quenching, a surface hardness of approximately 850 HV can be achieved even with inexpensive SPCC material, and it is possible to increase hardness within the range where nitrogen has diffused internally. The amount of distortion is about half that of carburizing and nitriding quenching, and only slightly larger than gas soft nitriding. The friction coefficient and seizure surface pressure are almost equivalent to those of carburizing and nitriding quenching, while the wear amount is half that of carburizing nitriding materials and one-third that of gas soft nitriding materials, which is quite favorable. 【Features】 - The surface roughness of the samples after treatment is good. - The time required for treatment can be significantly reduced to about 1/3 to 1/4 of that for gas soft nitriding. - It has a tempering softening resistance comparable to that of carburizing. - The amount of distortion is about half that of carburizing nitriding. - Superiority in friction and wear characteristics has also been demonstrated. *For more details, please refer to the catalog or feel free to contact us.

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High-frequency hardening of the rotary wheel

High-frequency hardening of the rotary wheel

Reliable technology that meets needs from general-purpose parts to super-large components!

We would like to introduce our "high-frequency hardening of rotating wheels," which can accommodate everything from single orders to mass production. Due to the short-time partial heating treatment characteristic of the high-frequency hardening method, which utilizes self-heating, the amount of distortion is minimized compared to conventional furnace-heated products, allowing for a reduction in labor and costs in subsequent processes. Based on our extensive experience, we design coils to quickly create hardening patterns that meet your specific needs. 【Features】 ■ Heating patterns suited to product shapes ■ Cost reduction due to low distortion ■ Capable of handling everything from single orders to mass production ■ Reliable quality ■ Quality assurance through automatic distortion removal machines *For more details, please refer to the PDF document or feel free to contact us.

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High-frequency hardening of sintered alloy parts

High-frequency hardening of sintered alloy parts

Flexible response from the prototype stage! We meet significant needs with excellent technology and quality management.

We would like to introduce "High-Frequency Hardening of Sintered Alloy Parts," which can accommodate a variety of product shapes. High-frequency hardening utilizes induction heating technology to heat only the necessary parts for hardening in a short time, allowing for the hardening process to be carried out. Compared to furnace heating treatment, it results in less deformation and almost no surface decarburization. High-frequency hardening greatly contributes to near-net-shape manufacturing. 【Features】 ■ Abundant technology, experience, and track record ■ Accommodates a variety of product shapes ■ Rapid response for mass production ■ Contributes to near-net-shape manufacturing ■ Flexible response from the prototype stage *For more details, please refer to the PDF materials or feel free to contact us.

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"Partial high-strength steel" high-frequency hardening

"Partial high-strength steel" high-frequency hardening

This is a steel material that achieves multiple strengths with a single bar of steel. By using high-frequency quenching, only the areas that require high strength and high durability can be made to have high strength.

In conventional heat treatment using furnaces, it was difficult to apply heat to the entire steel material while only treating the necessary parts. However, by utilizing high-frequency induction heating (IH) to selectively harden only a portion of the steel (enhancing strength and durability), we have achieved multiple strength levels with a single steel rod. By placing high-strength sections in areas that require structural integrity and low-strength sections in other areas, it is possible to control damage and reduce material usage. Using this technology and product, we have started selling high-strength rebar placed in column-beam joints, named "Double Stark®," which contributes to damage control in structures, reduction of rebar quantity, improved workability, and comfortable living spaces. *In 2018, we received the "Super" Monozukuri Parts Award and the Lifestyle-Related Parts Award.

  • Steel

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Processing by cooperative companies for processing technology.

Processing by cooperative companies for processing technology.

High-frequency hardening, vacuum hardening, Parkerizing, salt bath nitriding, etc.! We accept commissions!

Our company selects reliable partner companies and accepts orders through outsourcing. We offer services such as high-frequency hardening, vacuum hardening, Parkerizing, salt bath soft nitriding (Tufftride), and large-scale annealing/shooting products. Please feel free to contact us when you need our services. 【Overview】 ■ High-Frequency Hardening - Applicable to general steel materials - Estimated delivery time = 2 to 3 business days from the date of receipt (Exceptions may apply depending on whether distortion correction is needed; please inquire for large items) ■ Vacuum Hardening - Applicable materials: SKD series / SKH series / martensitic SUS / SK / medium carbon steel - Estimated delivery time = the day after receipt to 2 business days later (exceptions may apply depending on hardness and whether distortion correction is needed) *For more details, please refer to the PDF document or feel free to contact us.

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[Processing Technology] Vacuum Carburizing (Direct Carburizing)

[Processing Technology] Vacuum Carburizing (Direct Carburizing)

There are no grain boundary oxidation or carburization irregularities on the surface layer, so the inner surfaces of the pores are also possible! Quality improvement can be expected.

"Vacuum carburizing hardening" is a carburizing hardening method conducted in a vacuum furnace. Acetylene gas supplied into the furnace undergoes thermal decomposition, and the resulting carbon penetrates and diffuses from the surface. In addition to the carburizing effect, there is no grain boundary oxidation or carburizing unevenness in the surface layer, making it possible for the inner surfaces of pores as well. Moreover, since it finishes with a bright luster, an improvement in quality can be expected compared to conventional carburizing hardening. [Features] - Carburizing hardening method conducted in a vacuum furnace - In addition to the carburizing effect, it allows for the inner surfaces of pores due to the absence of grain boundary oxidation and carburizing unevenness in the surface layer - Finishes with a bright luster - Quality improvement can be expected compared to conventional carburizing hardening - JIS processing symbol: HQV *For more details, please refer to the PDF materials or feel free to contact us.

  • Processing Technology

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[Case Study] Improved Wear Resistance and Durability of S45C through Overall Quenching!

[Case Study] Improved Wear Resistance and Durability of S45C through Overall Quenching!

Introduction of case studies on extending lifespan through the change to heat treatment "salt quenching."

This is an introduction to a case where changing the heat treatment method of S45C to "salt quenching" successfully extended its lifespan. [Content] The heat treatment was changed from oil quenching to salt quenching, resulting in improved wear resistance and durability. The hardness increased from HRC 40-45 to HRC 55-60.

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Aitec Corporation Next-Generation Heat Treatment Prototype Introduction

Aitec Corporation Next-Generation Heat Treatment Prototype Introduction

Achieving high strength and low distortion!

Aitec Co., Ltd. accepts prototypes for heat treatment processing. Our company specializes in heat treatment of thin materials, such as clutch plates, and we respond to extremely challenging needs with our unique heat treatment technology, achieving minimal distortion and maximum hardness. With our automated line, we can provide urgent responses with short delivery times, so please feel free to contact us when you are in need. 【Supported Processes】 ■ Vacuum carburizing and quenching ■ Vacuum carburizing and nitriding ■ Nitriding and quenching ■ Gas nitriding and soft nitriding *For more details, please refer to our catalog or feel free to contact us.

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Basic Knowledge of Heat Treatment Method 'Nitriding Quenching' *Technical Material Giveaway

Basic Knowledge of Heat Treatment Method 'Nitriding Quenching' *Technical Material Giveaway

Distortion reduced by about 50%! A knowledge document that explains the benefits and mechanisms of the heat treatment method "nitriding quenching," along with basic knowledge and effectiveness. Currently available for free.

"Basic Knowledge of Nitriding Quenching" is a technical document that explains the mechanism and benefits of the heat treatment method "nitriding quenching," providing foundational knowledge and effectiveness. *Please view the PDF of the technical document available for download.*

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Case Studies of Quenching and Tempering Heat Treatment *Free Gift!

Case Studies of Quenching and Tempering Heat Treatment *Free Gift!

Distortion reduced by approximately 50%! A collection of case studies on the heat treatment method "nitriding quenching." Includes numerous details on the benefits and effects of nitriding quenching, as well as comparisons of distortion with other treatments. *Free distribution.

The "Case Study Collection on Nitriding and Quenching Heat Treatment" is a collection of numerous case studies that highlight the benefits and effects of nitriding and quenching, as well as comparisons of distortion with other treatments. [Contents (partial introduction)] ■ Material SP: Surface hardness HV 700 or higher ■ Material SP: Dimensional changes due to carburizing heat treatment ■ SCM 415 ■ SWCH 10R ■ SUS 420J2 ■ SUS 304 and more *Please view the PDF of the case study collection via download.

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Zero CO2 Emissions: New Heat Treatment Method 'Nitriding Quenching' with Minimal Distortion Even for Thin Materials

Zero CO2 Emissions: New Heat Treatment Method 'Nitriding Quenching' with Minimal Distortion Even for Thin Materials

A new heat treatment method that contributes to "environmental impact reduction" and "low distortion" compared to conventional carburizing quenching! Zero CO2 emissions with ammonia quenching.

Aitec's "Nitriding Hardening" is a surface hardening heat treatment method that allows nitrogen to penetrate and diffuse into steel, followed by quenching from the austenite state, resulting in low distortion and unique properties. This heat treatment method involves the infiltration and solid solution of nitrogen into steel in the austenite region (γ) of the Fe-N2 phase diagram. It is then rapidly cooled to produce hard nitrogen martensite. Unlike conventional "carburizing hardening," this process uses ammonia for quenching, resulting in zero CO2 emissions during the treatment process! It can be proposed as a new treatment method that considers environmental impact. **Benefits of Nitriding Hardening** ★ No CO2 emissions due to ammonia quenching - High surface hardness of HMV800 or more even with SPCC materials - Lower quenching temperature than carburizing, resulting in low distortion (with a proven example of 50% reduction in distortion) - High resistance to softening - Total cost reduction without distortion correction ~ "Decarbonized Heat Treatment Nitriding Hardening Seminar" Video Now Available for Free! ~ ◆ Theme: Decarbonized Heat Treatment Nitriding Hardening Seminar - Exploring the Possibilities from Carburizing to Nitriding ◆ Available Video: Nitriding Hardening Mass Production & Development Case Studies ◆ How to View: From the YouTube link at the bottom of this page *For detailed information, please refer to the technical materials available for download in the [PDF Download] section below.

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Netsuren "Induction Heating Equipment" High-Frequency Quenching

Netsuren "Induction Heating Equipment" High-Frequency Quenching

We provide a wide range of equipment globally, from fully automatic hardening machines for all applications in automobiles, construction machinery, and industrial machinery to simple manual hardening machines.

We design, manufacture, and engineer equipment and systems to achieve inline induction heating, energy saving, and labor saving in various industrial fields such as automotive, construction machinery, machine tools, steel, chemicals, and home appliances. As service bases, we have locations in Kanagawa and Nagoya, as well as overseas in the United States, China, Indonesia, Mexico, and South Korea, providing global support and services. We commercialize high-frequency power supply devices using SCR, IGBT, MOSFET, and SiC semiconductors, ranging from 0.5 to 400 kHz and 2.5 to 2,000 kW. Additionally, we have practical applications for CAE analysis up to metal transformation and "low (constant) deformation contour quenching technology" for gears and shafts, enabling us to provide equipment with high quality stability in heat treatment. *Induction heating (IH) technology uses green electricity as a heat source and contributes to the reduction of CO2 emissions.

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[Processing Technology] Radiant Quenching

[Processing Technology] Radiant Quenching

Prevents oxidation and decarbonization, and can protect luster! It also leads to a reduction in post-processing such as shot blasting.

"Radiant Hardening" is a hardening method that finishes with a surface that maintains a metallic luster. By processing in a non-oxidizing atmosphere, it prevents oxidation and decarburization, protecting the radiant quality. This also leads to a reduction in subsequent processes such as shot blasting. Please feel free to contact us when you need our services. 【Features】 ■ A hardening method that finishes with a surface that maintains a metallic luster ■ Prevents oxidation and decarburization ■ Can protect the radiant quality ■ Leads to a reduction in subsequent processes such as shot blasting ■ JIS processing symbol: HQB *For more details, please refer to the PDF document or feel free to contact us.

  • Processing Technology

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[Processing Technology] Carburizing Quenching and Carburizing Nitriding Quenching

[Processing Technology] Carburizing Quenching and Carburizing Nitriding Quenching

It is widely applied to various machine parts, including automotive parts and marine parts!

"Carburizing hardening" refers to a treatment that allows carbon to penetrate and diffuse from the surface of a metal, hardening only the surface. The surface becomes hard and wear-resistant, while the interior maintains lower hardness, resulting in high toughness and improved fatigue resistance. Additionally, "carburizing nitriding" is a treatment that allows both carbon and nitrogen to penetrate and diffuse into the surface of steel, hardening only the surface layer. This improves wear resistance. 【Features】 ■ Carburizing hardening - The surface becomes hard and wear-resistant - The interior maintains lower hardness for high toughness - Fatigue resistance can also be improved ■ Carburizing nitriding - A treatment that hardens only the surface layer - Wear resistance is improved *For more details, please refer to the PDF document or feel free to contact us.

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[Processing Technology] Flame Hardening (Frame Hard)

[Processing Technology] Flame Hardening (Frame Hard)

Partial hardening of small parts! It is possible to have a hard surface with high wear resistance and a tough core!

"Flame hardening" is a process that involves heating the surface of steel with a high-temperature flame, followed by quenching to harden the surface layer. Using a torch, the steel is heated partially and then rapidly cooled. This process allows for a hard surface layer with high wear resistance and a tough core, resulting in significant residual compressive stress on the surface, which improves fatigue strength. It is suitable for partial hardening of small parts (approximately Φ30 or less). 【Features】 ■ A process that heats the surface of steel with a high-temperature flame, followed by quenching to harden the surface layer. ■ Capable of producing a hard surface layer with high wear resistance and a tough core. ■ Significant residual compressive stress on the surface improves fatigue strength. ■ Suitable for partial hardening of small parts (approximately Φ30 or less). ■ JIS processing symbol: HQF *For more details, please refer to the PDF document or feel free to contact us.

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