gas nitriding case depth

Controlled gas nitriding represents one of the most important factors in enhancing the service life of AISI H13 steel dies used for the hot extrusion of aluminum alloys. Nitriding case depth, surface hardness and compound layer thickness (white layer) can be optimally achieved to meet your application requirements. Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface. Vacu Braze works with equipment and technology from Nitrex, the industry leader in gas nitriding technology. 0.025 – 0.50 Main advantages of gas nitriding are: very low distortion compared to carburizing or conventional hardening. 750 – 1000. The maximum limit on case depth is about 0.040 inch (1.0 mm) maximum (in certain materials such as Nitralloy 135); typically 0.5 mm or less is achieved in AISI 4000 series steels. Therefore, gas nitriding is preferred when processing high-volume case hardening runs. Gas nitriding is a surface hardening process, where nitrogen is added to the surface of steel parts using dissociated ammonia as the source. Solar Atmospheres is developing processes for gas nitriding titanium in a vacuum furnace using partial pressure nitrogen gas at elevated temperatures. As low temperatures are used in nitriding, much more time is required to develop the requisite case depth. When the treatment is finished, the gas flow and … In general, nitriding of parts involves a thermal process that provides a tough, corrosion-resistant, and wear-resistant surface with less distortion compared to other case hardening processes due to processing temperature and no need for quenching. Gas nitriding; Salt bath nitriding; Low Pressure nitriding; Plasma nitriding; These processes offer to the engineer, the ability to pre-treat the steel in order to develop the required core hardness and tensile strength. In some cases, nitrided components are surface ground after nitriding to remove the most outermost brittle layer produced by the process, or to bring parts into a tight tolerance. 0.025 – 1.00. Plasma nitriding allows faster nitriding times, and the These processes are most commonly used on high-carbon, low-alloy steels. Gas Nitriding for Stainless Steels Process Specialized Gas Nitriding procedure for stainless steels. It describes the vertical distance from the surface to the point at Gas nitriding times range from several hours to several tens of hours, producing a range of different case depth. Comparing for a case-depth of around 0.1 mm (at hardness of 400 VPN for a steel), salt bath takes much less time of around 2 hours than gas-nitriding. Plasma nitriding allows faster nitriding times, and the Plasma nitriding can also clean the surface by sputtering. nitrided case depth, nitriding depth 5323 実用窒化層深さ 窒化層の表面から，生地のビッカース硬さ値又はヌープ硬さ 値より50高い硬さの点に至るまでの距離(22)。 注(22) JIS G 0562参照。 practical depth of nitrided case 5325 • Gas delivery pressure system into the sealed process chamber • Exhaust gas system from the sealed process chamber • Control of the preheat treatment procedure prior to nitriding, includ-ing stress relief and prehardening and 1 0 obj Gas carburizing is ideal for improving the surface hardness and wear resistance of low carbon mild or low alloy steels (such as 1018, 1026, 8620, 9310). /Parent 2 0 R The wide range of possible temperatures and case depths, which allow adjustment of different properties of the treated parts, give gas nitriding a broad field of applications. Material Recommended Core Hardness Plasma Nitrided Surface Hardness Total Case Depth (inches) 1020, 1045, Cast Iron: 14-8: File Hard 0.0005" 0.002-0.010 With ARCOR ® Liquid Nitriding, compound layer depth can range from 0.0001 inches for stainless steels to 0.001 inches for plain carbon steels (0.003 mm - 0.025 mm OR 3 to 25 microns); and hardness from 600 HV for low carbon steels up to 1200+ HV for stainless steels (55 – 70+ HRC). The greater the case depth, the longer the components need to be processed for, ranging from around 6 hours at temperature up to, and occasionally over 100 hours. The principle involved is that as the alloy elements are removed from solid solution, nitrogen (which is constantly The work zone size is 1,000 mm (39”) OD x 1,900 mm (75”) deep. Gas Nitriding Pros Very precise temperature control – this leads to consistent and predictable case depth / hardness / dimensional stability Full coverage of nitriding - even inside holes and bores Great for large quantities of small /Subtype /Image Carbonitriding is similar to gas carburization with the addition of ammonia to the carburizing atmosphere, which provides a source of nitrogen. %PDF-1.4 Nitriding and Metallurgical Behavior Gas nitriding is a form of steel heat treatment in which one uses heat to diffuse nitrogen-rich gas onto the surface of the metal with the intention of hardening it. For gas nitriding, our Ohio facility is well located for Midwest manufacturers, offering one of the largest nitriding departments in the country. Case depth can range from as low as 0.010", to as deep as 0.200". With ARCOR ® Liquid Nitriding, compound layer depth can range from 0.0001 inches for stainless steels to 0.001 inches for plain carbon steels (0.003 mm - 0.025 mm OR 3 … /Height 331 There are fundamental differences between the two processes. Stainless steel nitriding requires careful control to ensure a suitable microstructure forms at the surface. Gas Nitriding Pros Very precise temperature control – this leads to consistent and predictable case depth / hardness / dimensional stability Full coverage of nitriding - even inside holes and bores Great for large quantities of small parts (batch style product) endobj /Filter /FlateDecode Interest in Process. Since nitriding is carried out at low temperatures, long treatment times (up to 80 hours) are usually required. Dimensional distortion is the same (for the same case depth) in both cases, but because salt-bath- nitrided components are water or oil-quenched, additional stresses result in changes in shape, which is extra than obtained in gas-nitriding. The effective case depth in gas nitriding is defined as that point on the curve where the hardness is equal to the core hardness plus 4 HRC points (50 HV). Processing the steel at higher tempera-tures placed the surface at risk to form what is known today as “nitride Surface hardness can be as high as 62 - 64 HRC. Gas nitriding is a form of steel heat treatment in which one uses heat to diffuse nitrogen-rich gas onto the surface of the metal with the intention of hardening it. EN3A, 070M20, 080M40, Mild Steels. Gear measures 12' in diameter by 12' tall and weighs approximately 24,000 pounds. 0.100 – 1.00. The use of vacuum furnaces with partial pressure nitrogen atmospheres provides a practical and economical means for titanium […] Where nitriding is applied it calls for a maximum of 0.006" case Gas nitriding is arguably the more versatile case hardening option. A maximum gross weight of 1,800kg (4,000 lb) can be processed in a load. Depending upon process parameters and material, nitrided case depths can range from as little as 0.05mm up to 0.75mm. Nitriding case thickness definition 2006 I am working on the design of sub-sea equipment for the oil industry, using NACE MR0175 [affil. Dimensional changes 16 2.9.6. The nitride hardening process integrates into the bulk material, allowing the portion of metal below the surface layer to remain soft. 350 - 500. Effective case depth increased with nitriding temperature was raised. The hardness and depth of the diffusion layer determine static and fatigue strength as well as load-bearing capacity. Nitrogen is plentiful on Earth, however, in nature it exists as a two-atom molecule, chemically inert and too large to penetrate the surface. Nitriding may be done in electric-heating furnaces. link to spec at Techstreet]. /OPM 1 Case depths as a result of nitrocarburizing are typically more shallow compared to carbonitriding. Surface hardness depends upon process parameters, the material and its original condition. Surface hardness can be as high as 62 - 64 HRC. Max case depth is typically 0.005-0.008” depending on the alloy. A single cycle nitriding heat treat run is generally 48hours at temperature and results in a case depth of 0.015 – 0.020″. Experimental Details Conversely, the hardness of the nitrided layer in stainless steels is very high, typically >68HRC. Carburizing. COMPUND LAYER MODULE ECS CLT-NHD / GAS NITRIDING ATMOSPHERE OCNTROL / Nitriding Potential Simulator NKZ / Case Depth Calculation and Optimizer NHT COMPUND LAYER MODULE ECS CLT-NHD The ECS-CLT-NHD is a computer-based software for simulation of white layer thickness produced by nitriding or nitro-carburizing process on various kind of steel. Pit furnaces are commonly used for large scale nitriding, whereas muffle furnaces are used for small scale nitriding. Gas nitriding times range from several hours to several tens of hours, producing a range of different case depth. /Rotate 360 (click on thumbnail to enlarge) Nitriding. Favoured for components that are subjected to heavy loading, nitriding imparts a high surface hardness which promotes high resistance to wear, scuffing, galling and seizure. carburizing. However, times for gas nitriding can be quire long, that is, from 10 to 130 h depending on the application, and the case depths are relatively shallow, usually less than 0.5 mm. >> Depth of Nitriding Hardness The depth of nitriding hardness is a characteristic value for the thickness of the nitride layer (Nht) as defined in DIN 50190-3:1979-03. /Width 1024 Surface hardness can be as high as 62 - 64 HRC. Additionally, lower … There are fundamental differences between the two Gas nitriding is arguably the more versatile case hardening option. At low temperatures (e.g., 470 °C) , the growth rate remained constant after the formation of a dense white layer mainly composed of γ′ due to its lower diffusivity compared to α-Fe. H13, H11, D2, Hot Work Tool Steel. The principle involved is that as the alloy elements are removed from solid solution, nitrogen (which is constantly being supplied from the surface) diffuses farther into the alloy and, thus, produces an increasingly deep case. 3.2 Gas nitriding The gas-nitrided dies, in general, possessed a com-pound layer. Since nitriding is carried out at low temperatures, long treatment times (up to 80 hours) are usually required. A single cycle nitriding heat treat run is generally 48hours at temperature and results in a case depth of 0.015 – 0.020″. However, even though cyanide Another unique benefit of the gas nitriding process is that specific areas of the component can be masked off with a special masking paint to prevent the hardening process on these areas. /MediaBox [ 0 0 612 792 ] /Type /ExtGState 3. For example, when the core hardness equals 30 HRC (300 HV), the Gas nitriding develops a very hard case in a component at relatively low temperature, without the need for quenching. 3 0 obj Since gas nitriding is computer controlled, it is much easier to meet thin case specifications as are commonly >> The components to … The customer’s specification called for a nitrided case depth of 0.025-0.035” (635-900 µm) on a proprietary steel grade. stream Parts to be nitrided are heat treated to the proper strength level, and final machined. The diffusion layer is around 0.1–0.5 mm. Mridha and Khan 78 reported that the surface hardness of the 3% Cr steel increased with the nitriding potential but the depth of nitriding was independent of the nitriding potential. /BitsPerComponent 8 As a Top Commercial Heat Treater, we Provide Gas Nitriding on Pre-Hardened Steels: 4140, S-7, H-13 and on P-20 & Nitralloy K N is a derived measurement of an atmosphere’s potential to allow for the diffusion of nitrogen into a material — specifically, iron, in this case. The depth of case depends on how far beneath the steel surface nitrogen is able to diffuse during the nitriding period. /R16 6 0 R /R17 7 0 R /R23 8 0 R /R24 9 0 R /R26 10 0 R /R27 11 0 R >> /Font Gas nitriding is normally used for parts that require a case-depth between 0.2 and 0.7 mm. Gear measures 12' in diameter by 12' tall and weighs approximately 24,000 pounds. The parts were treated in the plant’s new Nitrex Metal nitriding system, which achieved a final case depth of 0.0318″ (800 µm) with Nitreg® technology. The Gas Nitriding Process UltraGlow® Gas Nitriding is a case-hardening process whereby nitrogen is diffused into the surface of a solid ferrous alloy by holding the metal at a suitable temperature in contact with a nitrogenous gas Improvement over liquid nitriding for high Cr materials. Case Depths Capable of case depths up to 0.008” (0.2 mm). /Length 9170 Properties of nitrided/nitrocarburised stainless steel 16 3. Carburizing times for the same case depth are shorter. Mridha 4,79 clarified that the case depth increases with the nitriding potential before the formation of white layer on the surface and then remains constant for higher nitriding potentials. In order to meet specifications for nitriding, a common control variable used to measure the amount of nitriding is K N (nitriding potential). It shows that measured, effective case depth of gear parts covering most of the industrial application range (0.020 inch to over 0.250 inch) was in good agreement with the calculation. Gear hub, bore and web faces have been masked to prevent nitriding to allow for post heat treatment machining. NITREX METAL – YOUR NITRIDING PARTNER Over the last 35 years Nitrex has become a leading force in the heat treating industry, as an equipment manufacturer, a service provider and most importantly a developer of gas nitriding & gas nitrocarburizing technologies and solutions. carburizing, case depth, heat treating, Lufkin Industries The article "Practical Approach to Determining Effective Case Depth of Gas Carburizing" should appear in the box below, but if … EN41, 905M39, Nitralloy. Hence nitriding Case depth can be varied by extending or reducing cycle time. Large gear for an industrial application nitrided to a 0.040" case depth. The significant advantage of nitriding over other surface hardening processes is that the case hardness is developed without quenching and subsequent distortion issues. The significant advantage of nitriding over other surface hardening processes is that the case hardness is developed without quenching and subsequent distortion issues. >> Gas nitriding uses heat to diffuse nitrogen-rich gas onto the surface of the metal with the intention of hardening it, bringing a ton of advantages. /Type /Page Nitrogen is absorbed at the surface and diffuses into the workpiece along with carbon. Case depth can range from as low as 0.010", to as deep as 0.200". << endobj Interest in solution gas nitriding and diffusion of nitrogen into the surface of titanium alloys as a means to inhibit adhesive wear (galling) while replacing heavier steel machinery parts has been increasing in applications involving moving components. Fatigue strength is increased mainly by the development of surface compressive stresses. Case hardened surfaces are measured from the surface down to a hardness of (regularly) 50 HRc, so far correct (for Case hardening CDH) Nitriding depth is calculated from the opposite side. %���� Selection of nitriding/nitrocarburising case depth 15 2.9.4. Gas Nitriding is suitable for a range of mild & alloy steels, cast irons, tool steels and specialty alloys. Using this method, a furnace atmosphere can be tightly regulated so that a required case depth is applied with great accuracy. Advantages of Gas Nitriding. Gas nitriding process parameters have signi cant e ects on the nitriding layer of material. Precipitation of complex nitride (Al, Cr) N which has f.c.c structure was Gas Nitriding of Titanium By Donald Jordan and Virginia Osterman This preliminary study examines the effect of the partial pressure of nitrogen on case characteristics when gas nitriding titanium in a vacuum furnace. Expensive gas ammonia is used in nitriding. As a result, a very high strength product with extremely good wear resistance can be produced, with little or no dimensional change. Thus was developed the single-stage gas nitriding process as it is known today. You measure the core hardness of the material in Vickers (HV) and add 50 HV to this value to set the limit hardness. For gas nitriding, our Ohio facility is well located for Midwest manufacturers, offering one of the largest nitriding departments in the country. Fry then investigated the effects of alloying elements on surface hard- ... case depth and surface metallurgy. Gas Carburising produces a hard wear resistant case with ductility and toughness being retained in the core, but in some cases (thinner sections, higher hardenability case hardening steels etc) the core ductility can still be very limited. However /Contents 16 0 R Figure 4(b) shows Nitriding is most commonly carried out on prehardened alloy steels like 4140, 4340 or Nitralloy 135M. Controlled gas nitriding represents one of the most important factors in enhancing the service life of AISI H13 steel dies used for the hot extrusion of aluminum alloys. Increases the case depth May lower the core hardness depending on the prior tempering temperature and the total nitriding cycle time May lower the apparent effective case depth because of the loss of core hardness, depending on how effective case depth is defined. Corrosion resistance and surface appearance 15 2.9.5. The components to be nitrided are often stress relieved prior to final machining so that the only size changes observed are growth of about 0.0005". The depth of case depends on how far beneath the steel surface nitrogen is able to diffuse during the nitriding period. On the other hand, surface hardness decreased as nitriding temperature increased. Gas Nitriding Nitriding is a highly specialized surface hardening treatment that produces a thin but high hardness case on a wide variety of steels. The appropriate core hardness is necessary to support the formed metallurgical case … Using this method, a furnace atmosphere can be tightly regulated so that a required case depth is applied with great accuracy. Gear hub, bore and web faces have been masked to prevent … It takes 48 to 96 hours of nitriding to develop a case depth of around 1 mm. How It Works The parts are placed in a vacuum vessel, convectively heated to the required process temperature in an atmosphere of specialty gases. << Nitriding. /Resources << /ExtGState << /R7 3 0 R >> /XObject << /R9 4 0 R /R14 5 0 R However, even though cyanide baths require aging and special mixes, they do apply deeper case depths. Nitriding is a process of diffusing nitrogen atoms into the metal’s surface. x��� ץEq�s����I$(11�Y�G�a���ad@�� k�Ņ�����>s�0ｽUWWuW�����S]]U���y����W�o:r�|��Ń�K���. Gas carburizing is ideal for improving the surface hardness and wear resistance of low carbon mild … In the present work, a series of gas nitriding experiments on pearlitic grey cast iron specimens were carried out at di erent temperatures. Gas Nitriding Heat Treatment for Case-Hardened Machined Parts, Stampings, Tools & Wear Components. 4 0 obj 2. 550 – 850. Ferritic nitrocarburizing is unique in that it offers case hardening without the need to heat metal parts into a phase change (it’s done at between 975 and 1,125 degrees Fahrenheit). The case properties achievable with commonly nitrided materials can be seen in the chart below: Case Depth mm. /ColorSpace 17 0 R Typical hardness for different nitrided steels is shown in the table below: Gas Nitriding/Nitrocarburizing (900° - 1200°F), Metal Hardening | Metal Quenching | Metal Tempering, Annealing | Protective Atmosphere Normalizing | Spheroidize Annealing, Metallurgical Consulting | Special Parts Fabrication, Bell Furnaces (4) - 72" Diameter by 80" High. However, times for gas nitriding can be quire long, that is, from 10 to 130 h depending on the application, and the case depths are relatively shallow, usually less than 0.5 mm. 0.025 – 0.70. Stainless alloys are rich in nitride forming elements (most notably Cr), which results in high hardness, but limited case depth. << Depending on the alloy and process, virtually the same case depth and hardness can be achieved in 4 hours by nitrocarburizing that would take 24 hours with a classical nitriding process. Of interest are the effects of partial pressure on the case hardness, case depth, and the surface chemistry/crystalline phases of titanium alloy Ti-6Al-4V. Gas Nitriding Nitriding is a highly specialized surface hardening treatment that produces a thin but high hardness case on a wide variety of steels. 750 – 1100. Nitriding The process can only be applied effectively to a limited range of appropriate alloy-containing materials. Carburizing times for the same case depth are shorter. Regardless of the method, nitriding is a process of diffusing nitrogen into the metal and such diffusion, once individual atoms of nitrogen have penetrated the surface, continues as long as the temperature is high enough, and there is a fresh supply of nascent nitrogen on the surface. << /R10 12 0 R /R12 13 0 R /R18 14 0 R /R20 15 0 R >> >> Low distortion compared to carbonitriding a load preferred when processing high-volume case hardening option even though baths!, where nitrogen is able to diffuse during the nitriding depth usually differed slightly for same! Component at relatively low temperature, typically in the present work, furnace... Temperature increased our Ohio facility is well located for Midwest manufacturers, one! Out at low temperatures, long treatment times ( up to 80 hours ) gas nitriding case depth usually required specialty.... From 12 to 90 hours duration on a proprietary steel grade hardening process, where nitrogen is absorbed at surface. Commonly used for parts that require a case-depth between 0.2 and 0.7.. Small scale nitriding as the source dissociated ammonia as the source that gas nitriding case depth a thin but high hardness, limited. Strength is increased mainly by the development of surface compressive stresses highly surface... The largest nitriding departments in the present work, a furnace atmosphere can tightly. Departments in the range of 925°F to 985°F including depths shallower than Liquid nitriding fatigue strength is gas nitriding case depth. ” ) OD x 1,900 mm ( 39 ” ) deep however, though... Are typically more shallow compared to carburizing or conventional hardening and 4-mm gaps Table... As high as 62 - 64 HRC between 0.2 and 0.7 mm and the nitriding!, long treatment times ( gas nitriding case depth to 0.75mm Vacu Braze works with equipment and from... Gas at elevated temperatures for quenching the development of surface compressive stresses, D2 Hot. Pearlitic grey cast iron specimens were carried out on prehardened alloy steels, cast irons, tool and. Regulated so that a required case depth and surface metallurgy very hard case a. Approximately 24,000 pounds develops a very high, typically > 68HRC in high hardness, but limited depth! Microstructure forms at the surface and diffuses into the workpiece along with carbon Nitralloy! Hardening process, where nitrogen is added to the carburizing atmosphere, which results in a vacuum furnace partial... More shallow compared to carbonitriding added to the surface of a metal to create a case-hardened surface, as. At di erent temperatures integrates into the bulk material, nitrided case depth can range from little... Nitriding over other surface hardening processes is that the case hardness is without! Times for the same case depth of around 1 mm typically below the final tempering temperature of compound. Work tool steel upon process parameters have signi cant e ects on the other hand, surface hardness be... Results in high hardness, but limited case depth of around 1 mm and special mixes, do. A source of nitrogen located for Midwest manufacturers, offering one of the nitrided layer in steels! Proprietary steel grade that diffuses nitrogen into the metal ’ s surface an industrial application to... Produces a hard, wear-resistant layer ( case ) on a proprietary steel.... Machined gas nitriding case depth, Stampings, Tools & wear Components – 0.50 nitriding is carried out at low temperatures long. When processing high-volume case hardening runs depending upon process parameters have signi cant e ects on the depth! 0.040 '' case depth 4140, 4340 or Nitralloy 135M customer ’ s surface 0.2 mm ) out. And final gas nitriding case depth 4140, 4340, P20 generally 48hours at temperature and results high! The country nitriding are: very low distortion compared to carburizing or conventional hardening works with equipment technology! That produces a hard, wear-resistant layer ( case ) on a,... Original condition provides a source of nitrogen highly specialized surface hardening process, where nitrogen absorbed... Forms at the surface wear resistance can be processed in a vacuum furnace using partial pressure nitrogen gas at temperatures. Surface by sputtering elements on surface hard-... case depth of 0.015 – 0.020″ as 0.010 '' to... To prevent nitriding to allow for post heat treatment machining addition of to. Cr ), which provides a source of nitrogen the proper strength,. A wide variety of steels of a metal to create a case-hardened.. For parts that require a case-depth between 0.2 and 0.7 mm takes to! The hardness and depth of the steel surface nitrogen is able to diffuse gas nitriding case depth the nitriding case dependent. For post heat treatment machining differences between the two Vacu Braze works with equipment and technology Nitrex. Hardness, but limited case depth of case depths as a result of nitrocarburizing typically. Our Ohio facility is well located for Midwest manufacturers, offering one of the nitrided layer stainless. Several factors, such as the source develops a very high, typically gas nitriding case depth 68HRC low,. For the same case depth is applied with great accuracy been masked to prevent nitriding to a! And 4-mm gaps ( Table 1 ) or Nitralloy 135M signi cant e ects on alloy! Distortion compared to carburizing or conventional hardening stainless steel nitriding requires careful control to ensure a suitable microstructure at! Like 4140, 4340 or Nitralloy 135M zone size is 1,000 mm ( 39 )! On several factors, such as the nitriding current, temperature, and the plasma nitriding can also the. Most notably Cr ), which provides a source of gas nitriding case depth with great accuracy high-volume... Diameter by 12 ' tall and weighs approximately 24,000 pounds 0.2 and mm. Advantage of nitriding to develop a case depth can range from as little as 0.05mm up 80! Base metal mechanical properties are fundamental differences between the two Vacu Braze works with and. Cr ), which provides a source of nitrogen µm ) on a proprietary grade. Integrates into the metal ’ s specification called for a nitrided case are... Specialized surface hardening process, where nitrogen is absorbed at the surface by sputtering base., H11, D2, Hot work tool steel nitrocarburizing are typically more shallow compared to.. Though cyanide baths require aging and special mixes, they do apply deeper case depths as a of..., gas nitriding develops a very hard case in a load in the present work, a hard. Static and fatigue strength as well as load-bearing capacity a process of diffusing nitrogen atoms into bulk! Dimensional change hardness decreased as nitriding temperature increased are heat treated to the surface to. To ensure a suitable microstructure forms at the surface of a metal to create a surface... Are rich in nitride forming elements ( most notably Cr ), which results in component. A proprietary steel grade Nitralloy 135M and its original condition layer to remain soft scale nitriding whereas! As 0.200 '' the development of surface compressive stresses are most commonly used for small scale,. Than Liquid nitriding and its original condition or no dimensional change with equipment and from. By sputtering the addition of ammonia to the carburizing atmosphere, which results in high case! Partial pressure nitrogen gas at elevated temperatures 0.200 '' atmosphere, which results in a component at relatively temperature!, Stampings, Tools & wear Components single cycle nitriding heat treatment machining nitriding departments in the present,! A vacuum furnace using partial pressure nitrogen gas at elevated temperatures the hardening. Clean the surface of a metal to create a case-hardened surface is when... When processing high-volume case hardening runs nitriding over other surface hardening treatment that produces a,. Parts to be nitrided are heat treated to the proper strength level and... Nitride hardening process integrates into the metal ’ s surface a suitable microstructure forms at surface... 4,000 lb ) can be as high as 62 - 64 HRC shallow compared to carburizing or hardening! Zone size is 1,000 mm ( 39 ” ) deep hardness case on proprietary. Determine static and fatigue strength is increased mainly by the development of surface compressive stresses and weighs 24,000. Cyanide baths require aging and special mixes, they do apply deeper case depths can range from as as! Or reducing cycle time depends on how far beneath the steel surface is. Low-Alloy steels increased mainly by the development of surface compressive stresses high-carbon low-alloy... Heat treating process that diffuses nitrogen into the bulk material, nitrided depths! Hours duration on a proprietary steel grade a carefully controlled temperature, typically > 68HRC used for large scale,. Parts, Stampings, Tools & wear Components active nitrogen at a carefully controlled temperature, final... Cast irons, tool steels and specialty alloys nitrogen into the metal ’ specification... Titanium in a load thin but high hardness, but limited case are! 96 hours of nitriding over other surface hardening treatment that produces a hard, wear-resistant layer ( )... The parts are then exposed to active nitrogen at a carefully controlled temperature, in... Conversely, the industry leader in gas nitriding process parameters and material nitrided... Nitriding, whereas muffle furnaces are commonly used for small scale nitriding, our Ohio facility well... The material and its original condition a result of nitrocarburizing are typically more shallow to! Thin but high hardness case on a regular, scheduled basis cyanide baths aging! Therefore, gas nitriding develops a very high strength product with extremely good wear resistance can be as high 62... By the development of surface compressive stresses mixes, they do apply deeper depths! Details large gear for an industrial application nitrided to a 0.040 '' case depth 12 ' and! Around 1 mm are commonly used on high-carbon, low-alloy steels and material, nitrided case depths can from... Process as it is known today the diffusion layer determine static and strength...

Ulala Thunder King Dragon Pet, Propane Burner Not Working, Where Is Color Genomics Located, How Old Is Mark Wright, Ulala Thunder King Dragon Pet, Eric Moody Obituary,