WO2017194205A1 - Procédé de codage lors du traitement thermique d'une pièce - Google Patents

Procédé de codage lors du traitement thermique d'une pièce Download PDF

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Publication number
WO2017194205A1
WO2017194205A1 PCT/EP2017/025123 EP2017025123W WO2017194205A1 WO 2017194205 A1 WO2017194205 A1 WO 2017194205A1 EP 2017025123 W EP2017025123 W EP 2017025123W WO 2017194205 A1 WO2017194205 A1 WO 2017194205A1
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WO
WIPO (PCT)
Prior art keywords
coding
gas
workpiece
coding component
isotopes
Prior art date
Application number
PCT/EP2017/025123
Other languages
German (de)
English (en)
Inventor
Jürgen Scholz
Ernst Miklos
Jim Fieret
Pierre Foret
Original Assignee
Linde Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde Aktiengesellschaft filed Critical Linde Aktiengesellschaft
Publication of WO2017194205A1 publication Critical patent/WO2017194205A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02—Supplying steam, vapour, gases, or liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B22F2003/153—Hot isostatic pressing apparatus specific to HIP
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/241—Chemical after-treatment on the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment

Definitions

  • the present invention relates to a method of encoding in the heat treatment of a workpiece.
  • the heat treatment is a method or a combination of several processes for the treatment of a workpiece, wherein the workpiece is subjected to changes in the temperature or the temperature sequence in order to achieve certain material properties.
  • surrounding means may include changes, e.g. of the carbon or nitrogen content.
  • Heat treatment is understood to mean processes for the treatment of materials by thermal, chemical-thermal or mechanical-thermal action in order to achieve optimum performance properties.
  • the former include, for example, annealing and curing, i. H. the thermal process.
  • the second-mentioned methods belong to the diffusion and coating processes or to the thermochemical processes (eg carburizing, case hardening, nitriding, boriding).
  • Another way of subdivision may be in production oriented or
  • Fabrication-oriented processes include stress relieving, soft annealing, normalizing, coarse grain annealing, diffusion annealing, recrystallization annealing, and tempering.
  • Annealing is the heating, soaking and cooling of semi-finished products and workpieces to achieve defined material properties.
  • Annealing is a branch of heat treatment and is one of the manufacturing processes by changing the
  • the annealing process is usually subdivided into at least three phases:
  • the workpiece is brought to the holding temperature.
  • the workpiece In the holding phase, the workpiece is kept at a constant holding temperature. It serves for temperature compensation in the workpiece and the equilibration of chemical and physical processes in the material. The duration required for this is called the holding time and, apart from the result to be achieved, also depends on the workpiece geometry and the arrangement of the workpieces in the annealing furnace or the heat treatment plant.
  • the workpiece In the cooling phase, the workpiece is brought back to ambient temperature. Stress-oriented processes are the thermal heat treatment and the thermochemical heat treatment.
  • Methods for thermal heat treatment are e.g. hardening, tempering, bainitizing and surface hardening.
  • the hardening of steel causes an increase in its mechanical resistance through targeted modification and transformation of its structure. It can through
  • Annealing describes the combined heat treatment of metals, consisting of hardening and subsequent tempering.
  • the material steel is meant here, but even with non-ferrous metals such as titanium alloys, this type of thermal structure formation and modification is common.
  • thermochemical heat treatment e.g. carburizing
  • Carbonitriding, nitriding, alumining, siliciding, vanadation, boriding and nitrocarburizing are heat-treated for the targeted adjustment of their properties. Heat treatments on
  • Ceramics are usually only carried out during the manufacturing process (during sintering).
  • Sintering is a process for making or changing materials.
  • fine-grained ceramic or metallic materials often under elevated pressure - heated, but the temperatures remain below the melting temperature of the main components, so that the shape of the workpiece is maintained. It usually comes to a shrinkage, because the particles of the starting material compact and pore spaces are filled.
  • Liquid phase sintering which also leads to a melt.
  • Hot isostatic pressing is a development in manufacturing technology in which powders and solids, especially ceramics and metals, are simultaneously hot pressed and sintered. The workpiece is inserted into a deformable, sealed container.
  • This container comes in a heatable pressure vessel and the workpiece is added
  • the gas pressure acts on all sides of the workpiece, so that the workpiece receives isotropic properties. Open pores can not be recompressed because the gas will penetrate into these pores. The recompression can only be done with closed porosity.
  • Object of the present invention is therefore to provide a simple, safe and reliable method for coding in the heat treatment of workpieces, if possible without additional steps. This object is achieved by a method according to the independent claim.
  • the method is characterized in that at least a predetermined time interval during the heating of the workpiece, a gaseous
  • Coding component or encoding gas containing a coding component is added such that the use of the coding component in the finished object is detectable, and that information about the coding component are logged.
  • the gaseous coding component may comprise one or more isotopes of at least one gas, wherein the proportion of the at least one isotope compared to the naturally occurring proportion of this isotope in the gas is changed.
  • the coding component can also comprise gaseous alloying elements, wherein the proportion of the gaseous alloying element is preferably chosen such that the gaseous alloying element only insignificantly alters the material properties of the workpiece.
  • Alloying elements in the finished workpiece e.g. can be detected by metallurgical and / or chemical and / or magnetic resonance analysis method.
  • Logging may involve workpiece-related storage of the data in electronic form or printing the information on a certificate, e.g. also in
  • Machine-readable form are understood.
  • the method according to the invention it is possible to reliably and reliably code a workpiece in a simple and cost-effective manner.
  • the coding takes place in that at least at a predetermined time interval during the heat treatment of the workpiece, the workpiece is at least partially applied with a coding component. If this gaseous coding component is chemically active, it will react with the metal and the reaction product (eg, an oxide, nitride, carbide) will be embedded in the metallic structure. But also coding molecules that do not react (because eg the local Temperature is too low) can be trapped in the small spaces of the granular structure.
  • the reaction product eg, an oxide, nitride, carbide
  • the coding component can be detected in the finished workpiece, for example by means of chemical analysis methods or by means of a mass spectrometer. This can be done in a laboratory or with mobile devices.
  • Another advantage is that the production parameters do not have to be changed or adjusted due to coding.
  • the logging of coding information can, for example, the storage of
  • the coding can be introduced via a complete workpiece or only selectively at predetermined locations or areas of the workpiece. Because the coding information is logged and / or stored in a database, it is precisely recorded or recorded at what time which coding component was introduced at which point of the workpiece.
  • the coding information may include information on the nature and / or the proportion of
  • Coding component and / or on the location of the coding component in the object and / or on the serial number of the object.
  • Coding component was introduced, it is examined whether it is a
  • a heat treatment in particular includes a production-oriented process such as stress relief annealing, soft annealing, normalizing, coarse grain annealing, diffusion annealing, recrystallization annealing and tempering or a stress-oriented thermal process
  • Heat treatment e.g. hardening, tempering, tempering and that
  • Heat treatment such as carburizing, carbonitriding, nitriding,
  • the heat treatment for example, in an oven, a continuous furnace, a hearth furnace or in a
  • Process chamber are performed.
  • the invention is used with particular advantages in the heat treatment of metals.
  • the workpiece is heated and / or cooled in a certain course in order to change the material or material properties.
  • a modification of the crystal structure of the material in particular
  • heat treatment should not include pure combustion processes in which a substance reacts with an oxidizing agent and a new substance, namely the oxide of the original substance, is formed.
  • the workpieces subjected to the heat treatment may in the context of the present invention consist of materials such as e.g. Polymer, ceramics, synthetic resin, plastic and
  • the process gas may comprise an inert gas such as nitrogen, argon, helium, or an active gas such as O 2, CO 2 , or H 2, or mixtures thereof.
  • a mixture of process gas and coding component is also referred to below as the coding gas.
  • the coding component thus comprises, for example, one or more isotopes of a gas, preferably the process gas, wherein the proportion of an isotope is changed compared to the natural proportion of the isotopes in the gas. That means the ratio of isotopes is changed from the naturally occurring ratio.
  • the ratio of 12 C (frequency 98.9) to 13 C
  • the frequency of isotopes versus naturally occurring frequencies may be about or greater than 0.5% or 1.0% or 1.5% or 2.5% or 5.0% or 10, 0% or 25% or 50.0% or 75% or 100% or 150% or 200% or 500% or 1000% is increased or decreased.
  • Nitrogen 15 and nitrogen 14 and / or carbon 12, carbon 13 and / or carbon 14 and / or also, for example, oxygen-16 and / or oxygen 18 are preferably provided as isotopes. Furthermore, argon -36, -38, -39, -40 can also be provided.
  • Encoding component include one or more other than the naturally occurring isotopes of the process gas.
  • oxygen isotopes with nitrogen isotopes or C isotopes in C0 2 can be combined with H isotopes in H 2
  • a heater e.g. Radiation heater, a convection heater or a contact heater may be provided.
  • a device for encoding workpieces in the heat treatment comprises, for example, a receiving device on which a workpiece can be arranged, and a heat source for heating the workpiece in order to heat-treat the workpiece.
  • a Kod istskomponentezu slaughter is provided, which is connected to a control device such that at least a predetermined time interval during the heat treatment, the workpiece a coding component or a coding component containing coding gas is supplied such that the use of the coding component in the finished workpiece is detectable,
  • the gaseous coding component preferably comprises one or more isotopes of at least one gas and the proportion of the at least one isotope is changed compared to the naturally occurring proportion of this isotope in the gas and / or wherein the gaseous coding component contains gaseous alloying elements.
  • a database for storing coding information can be provided.
  • the Kod istskomponentezu slaughterhouse comprising a mixing chamber for mixing the coding component to the process gas, wherein from the mixing chamber the workpiece at least partially a coding component or a process gas or a mixture of the process gas and the coding component can be fed.
  • the mixing chamber has a first inlet for supplying a
  • the coding component supply means may also include a nozzle for locally imparting a work to a work piece during the heat treatment with a coding component. This nozzle can, for example, be moved automatically by means of a robot device.
  • a process chamber can be provided.
  • the process chamber may also itself have two inlets, one inlet for supplying process gas and the other inlet for supplying a
  • Coding component or a coding component containing process gas (premix) is provided from corresponding storage containers
  • the process gas is designed or assembled in such a way that it can ensure the chemically metallurgically desired properties of the workpiece and, in addition, permits unambiguous workpiece identification or coding.
  • workpiece-related process gases with appropriate coding component must be provided.
  • the coding component can also be used as a premix from a
  • Gas storage container can be provided, both process gas and a
  • This gas storage container containing the premix then forms the coding component supply device.
  • the coding component supply means may thus be the mixing chamber, the premix reservoir or the reservoir containing the coding component.
  • the addition of the coding component can be controlled by a control device.
  • This controller may include a closed-loop encoding component controller that controls the addition.
  • Codiansskomponteeregler raised by means of a sensor an actual value of one or more flow rates in the process chamber and / or the mixing chamber, comparing this with a predetermined setpoint of one or more flow rates and via an actuator then the predetermined setpoint is set.
  • a coding gas for encoding in the heat treatment of a workpiece comprises a process gas and contains a coding component, wherein the gaseous
  • Coding component comprises one or more isotopes of at least one gas and the proportion of the at least one isotope compared to the naturally occurring proportion of this isotope is changed in the gas.
  • the coding component of the coding gas is introduced into the workpiece during the manufacturing process and forms part of the workpiece.
  • the process gas may be an inert gas, such as e.g. Argon, helium, neon, krypton, xenon or radon and / or an active gas, e.g. 02, C02, H2, and N2 or mixtures thereof.
  • an inert gas such as e.g. Argon, helium, neon, krypton, xenon or radon and / or an active gas, e.g. 02, C02, H2, and N2 or mixtures thereof.
  • the coding component may preferably comprise oxygen 18 carbon dioxide (C1802), carbon 13 carbon dioxide (13C02), carbon 13 carbon monoxide (13C02), deuterium (D2), nitrogen 15 (15N2) and oxygen 18 (1802) or mixtures thereof.
  • the abundance of the isotope may be about 0.5% or about 1.0% or about 1.5% or about 2.5% or about 5.0% or about 10.0% or about 25% over the naturally occurring frequency % or 50%, or 75%, or 100%, or 150%, or 200%, or 500%, or 1000%.
  • the coding component may contain at least one isotope of an active gas which reacts with the material of the workpiece to be produced in such a way that it remains in the workpiece.
  • the coding component may comprise at least one inert gas isotope, the isotope being incorporated into the workpiece.
  • the coding component may contain a plurality of different isotopes (isotopes of different gases) in predetermined proportions, the
  • the isotopes may be isotopes of the gas that is the main component of the gas
  • the isotopes can also be isotopes that do not occur in the process gas.
  • Nitrogen 15 N-isotopes may sometimes be inert and sometimes reactive depending on the alloying element, temperature, concentration and / or reaction time.
  • Hydrogen isotopes can also be incorporated in the gaseous state in microporosities, react with atomic oxygen O 2 and dissolve or they can form metallic hydrides by adsorption on metallic surfaces and remain in the workpiece.
  • Carbon isotopes 12 C and 13 C are provided in the form of carbon dioxide, which is then separated in the process.
  • Some isotopes of H, N, CO may be added to the process as part of a chemical compound such as e.g. B: C 18 , 0 2 , 13 C0 2 , N 2 H 3 and 15 NH 3
  • the coding gas may be provided for encoding workpieces according to the method described above.
  • the invention will be explained in more detail below with reference to FIGS. These show in
  • Figure 1 is a schematic representation of a device according to the invention
  • Figure 2 is a schematic representation of another embodiment of a
  • the invention is explained in general form by way of example with reference to a device 1 for heat treatment (FIG. 1).
  • the device 1 comprises a receiving device 2 on which a 3 workpiece for heat treatment can be arranged.
  • a heat source or a heating device 4 for heating the workpiece 3 is arranged.
  • the gas supply device 5 comprises a gas reservoir 6.
  • the gas reservoir 6 is connected via a
  • Line section 7 connected to a nozzle 8.
  • the nozzle 8 is movable by means of a robot (not shown).
  • gas reservoir 6 is a coding gas or a gaseous
  • the control device comprises a
  • the encoding component controller may include a P-controller, an I-controller, a D-controller, and combinations thereof, such as a PID controller.
  • the coding component controller detects by means of a sensor an actual value of the one or more volume flows in the process chamber 2 and / or the mixing chamber, this compares with a predetermined setpoint of one or more volume flows and via an actuator then the predetermined setpoint is set.
  • the device according to the invention is based on a second
  • the device comprises a process chamber 9, which is closed by a chamber wall 10 to the outside and limits a process space 11.
  • the heat treatment of a workpiece is performed.
  • the receiving device and the heating device are arranged in the process chamber 9.
  • Process chamber 9 is acted upon by a process gas.
  • the process gas supply device 12 has a process gas reservoir 13 for the process gas, the process gas reservoir 13 being connected to the process chamber 9 via a line section 14. Alternatively, a mixing chamber (not shown) may be provided.
  • Mixing chamber has an inlet for supplying process gas from the
  • the process gas and the coding component may also be provided as a premix from a gas reservoir (not shown) containing both process gas and a corresponding proportion of the coding component. This containing the premix gas storage tank then forms the
  • Codtechnischskomponentezu1.2 East and is with the process chamber 2 directly in addition to the reservoir 7 for the process gas connected or connected to the mixing chamber.
  • a workpiece is arranged on the receiving device in the first step.
  • the workpiece is heated by the heater to subject the workpiece to a heat treatment.
  • Process chamber 9 then supplied to the coding component by means of the gas supply.
  • process gas is permanently located in the process chamber 9.
  • the process gas is nitrogen or a nitrogen-containing mixture (same for argon)
  • a coding gas may also be provided.
  • the coding gas may either be provided as a premix or provided in a mixing chamber as needed.
  • the coding component receives a single area of the workpiece, if it is applied directly to the coding component or the entire workpiece a unique isotope signature.
  • the coding information is stored in a database. All parameters necessary for the heat treatment of the workpiece are also stored electronically.
  • the coding component feeding device may be provided with an interface of the
  • Starting material to the shielding gas is assigned a coding component. In this way, it can be precisely determined or detected where the coding is arranged in the workpiece.
  • a method according to the first embodiment differs from the method described above only in that it is not in one
  • Process chamber is carried out and preferably only a gas supply means for applying the workpiece with a gaseous coding component or a coding gas is provided.
  • the isotopes used can be isotopes of the process gas, i. for example, when nitrogen is used as the shielding gas, the ratio of nitrogen-15 to nitrogen-14 isotopes is changed.
  • nitrogen used as the shielding gas
  • carbon dioxide containing carbon-12, carbon-13 and carbon-14 isotopes may also be provided.
  • oxygen isotopes and nitrogen isotopes can be combined.
  • oxygen isotopes and nitrogen isotopes can be combined.
  • stainless steel or nickel-based alloys a combination of carbon isotopes in C0 2 and hydrogen isotopes in H 2 can be used.
  • Inert isotopes can in principle be used independently of materials, since embedding in the microporosities is a purely mechanical process. However, it is also possible to add other isotopes of another gas together with a portion of this other gas to the process gas as the coding component. In a next step, the finished workpiece can be with the help of a
  • Detection device such as a mass spectrometer
  • an inert gas such as argon as the process gas, which contains a small proportion of between 1 ppm and 10,000 ppm nitrogen-15 as a coding component.
  • the metallic starting material contains titanium. Accordingly, in the production of the three-dimensional workpiece, a small proportion of the titanium reacts with the nitrogen-15 and forms titanium nitride-15. This is indistinguishable from titanium nitride-14 in its chemical and physical properties, and therefore this can not be detected by chemical analysis methods. However, it is possible to analyze the workpiece with a mass spectrometer. It is then found that the workpiece was made under a nitrogen atmosphere with increased nitrogen 15 content. Thus, it is possible by means of the method according to the invention to code a workpiece or specific areas of a workpiece and subsequently to detect this coding.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un procédé de codage lors du traitement thermique d'une pièce. Ce procédé comprend les étapes consistant à : prendre une pièce, chauffer la pièce au moyen d'une source de chaleur pour la soumettre à un traitement thermique. Le procédé est caractérisé en ce que, à au moins un intervalle de temps prédéfini pendant le chauffage, un constituant de codage ou un gaz de codage contenant le constituant de codage est ajouté de manière à permettre la détection de l'utilisation des constituants de codage dans l'objet fini, les constituants de codage gazeux contenant au moins un isotope d'au moins un gaz et la fraction dudit au moins un isotope pouvant être modifiée par rapport à la fraction d'occurrence naturelle de cet isotope dans le gaz, et l'établissement d'un protocole d'informations de codage, qui décrit informations de codage et leur emplacement dans la pièce.
PCT/EP2017/025123 2016-05-13 2017-05-12 Procédé de codage lors du traitement thermique d'une pièce WO2017194205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16001091.4 2016-05-13
EP16001091.4A EP3243585A1 (fr) 2016-05-13 2016-05-13 Procede et dispositif de codage lors du traitement thermique d'un composant et gaz de codage destine a coder des composants lors du traitement thermique d'un composant

Publications (1)

Publication Number Publication Date
WO2017194205A1 true WO2017194205A1 (fr) 2017-11-16

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WO (1) WO2017194205A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114322587A (zh) * 2021-12-28 2022-04-12 湖南金天铝业高科技股份有限公司 一种连续烧结控制方法

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JP2013040074A (ja) * 2011-08-17 2013-02-28 Taiyo Nippon Sanso Corp 金属酸化物同位体の製造方法および金属酸化物同位体の製造装置
US20150102538A1 (en) * 2012-07-04 2015-04-16 Kanto Yakin Kogyo Co., Ltd. Method for heat treatment, heat treatment apparatus, and heat treatment system
US20160039163A1 (en) * 2013-05-28 2016-02-11 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Hot isostatic pressing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5586157A (en) * 1993-12-28 1996-12-17 The University Of Chicago Method and apparatus for manufacturing gas tags
US20110272637A1 (en) * 2008-12-09 2011-11-10 L'air Liquide Societe Anonyme Pour L'etude Et L'ex Ploitation Des Procedes Georges Claude Method for Producing a Gaseous Atmosphere for Treating Metals
JP2013040074A (ja) * 2011-08-17 2013-02-28 Taiyo Nippon Sanso Corp 金属酸化物同位体の製造方法および金属酸化物同位体の製造装置
US20150102538A1 (en) * 2012-07-04 2015-04-16 Kanto Yakin Kogyo Co., Ltd. Method for heat treatment, heat treatment apparatus, and heat treatment system
US20160039163A1 (en) * 2013-05-28 2016-02-11 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Hot isostatic pressing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114322587A (zh) * 2021-12-28 2022-04-12 湖南金天铝业高科技股份有限公司 一种连续烧结控制方法
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