CN106048437A - Method for carrying out heat treatment on invar steel in hydrogen atmosphere - Google Patents
Method for carrying out heat treatment on invar steel in hydrogen atmosphere Download PDFInfo
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- CN106048437A CN106048437A CN201610536451.6A CN201610536451A CN106048437A CN 106048437 A CN106048437 A CN 106048437A CN 201610536451 A CN201610536451 A CN 201610536451A CN 106048437 A CN106048437 A CN 106048437A
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- invar steel
- steel
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- hydrogen
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/001—Heat treatment of ferrous alloys containing Ni
-
- 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
- B22F2003/248—Thermal after-treatment
Abstract
The invention provides a method for carrying out heat treatment on invar steel in hydrogen atmosphere. By the application of a powder metallurgy preparing method, composite powder is subjected to plasma sintering in a vacuum environment, obtained invar steel alloy is small in grain and uniform in structure, and does not contain large-particle second phases, then the invar steel is subjected to annealing heat treatment in the hydrogen atmosphere, holes and cracks in the prepared high-strength and high-corrosion-resistance invar steel are reduced obviously, the structure is compact and uniform, and the invar steel cannot be corroded easily in air and has good corrosion resistance. In the preparation and heat treatment processes of the invar steel, the powder metallurgy technology and the heat treatment technology are combined effectively and orderly, by means of powder metallurgy, the invar steel with the small grain and the uniform structure is prepared, by the utilization of the characteristics that harmful substances in the invar steel are removed in the hydrogen atmosphere, residual internal stress in the preparing process is eliminated, and the grain is refined, the holes and the cracks in the invar steel are effectively reduced, and the compactness and the uniformity of a steel body are improved.
Description
Technical field
The present invention relates to a kind of method to invar steel heat treatment in a hydrogen atmosphere, be belonging to PM technique and heat
Processing technical field.
Background technology
Powder metallurgy is to produce metal dust or make with metal dust (or mixture of metal dust and non-metal powder)
For raw material, through shaping and sintering, manufacture metal material, composite and the Technology of all kinds goods.Powder smelting
Jin Fayu produces pottery similar place, belongs to sintered powder technique, and therefore, a series of New Technologies In Powder Metallu Rgies also can be used
Preparation in ceramic material.Due to the advantage of PM technique, it has become the key solving new material problem, at new material
Development in play very important effect.Since high-energy ball milling is used for preparing strengthened dispersion alloy by Benjamin, machinery
Alloying has evolved into the effective ways of a kind of synthetic material, is successfully used to synthetic crystal material, micro crystal material, nanometer material
Polytype materials such as material, intermetallic compound, quasicrystal material and non-crystaline amorphous metal, mechanical alloying be one nonequilibrium
Solid alloy process, having the prominent advantages that of it can make some alloy systems increase solid solubility, thin during quick solid solution
Change crystallite dimension, and make alloy system diffusion uniformly, obtain good mechanical property.
Under protective atmosphere, heat-treated metal alloy has been the technical method of comparative maturity, protects invar steel
Heat treatment under property atmosphere, it is possible to obtain the most excellent chemical property and mechanical performance.And pass through under hydrogen atmosphere invar
Steel carries out heat treatment, and under other atmosphere that compare, heat treatment has and can increase substantially its intensity, hardness and decay resistance
Etc. advantage, so heat treatment invar steel can be described as a new technique that is brand-new and that have innovation in a hydrogen atmosphere, at present
Both at home and abroad existing the most substantial amounts of scientific research personnel level scientific research institution starts the preparation to invar steel and post-processing technology is explored and ground
Study carefully, but study more also mainly invar steel technology of preparing in this respect, and study still in terms of corrosion resistance and intensity
Less.
Composite granule plasma agglomeration under vacuum conditions is obtained by the method that the present invention is prepared by applied powder metallurgy
Invar steel alloy crystal grain is tiny, even structure and without bulky grain the second phase, enter in the face of invar steel the most in a hydrogen atmosphere
Row annealing heat treatment, the invar steel hole of the high intensity high corrosion resistance prepared and crackle significantly reduce, compact and uniform structure,
And the most perishable, there is good corrosion resistance.In the preparation and heat treatment process of invar steel, the present invention is by powder
Metallurgical technology and the most orderly combination of heat treatment process technology, prepare crystal grain by powder metallurgy tiny, the Yin that structure is homogeneous
Watt steel, utilizes the harmful substance removing in invar steel under hydrogen environment, eliminates the internal stress of residual when it is prepared and refine it
The characteristics such as crystal grain effectively reduce the hole in invar steel and crackle, improve compactness and the uniformity of steel body.
Summary of the invention
The present invention proposes a kind of method prepared by applied powder metallurgy by composite granule plasma agglomeration under vacuum conditions
The invar steel alloy obtained, carries out, in the face of invar steel, heat treatment of annealing the most in a hydrogen atmosphere, thus increases substantially Yin
The chemical property of watt steel and mechanical performance, the intensity of invar steel own, the hardness prepared due to powder metallurgy are the highest, so postorder I
Invar steel need to be carried out high annealing, the internal stress remained when eliminating preparation in invar steel rigid body, and also can refine steel
The size of the crystal grain of body own, thus promote its intensity and hardness.
A kind of by invar steel being carried out powder body preparation and heat-treating methods in a hydrogen atmosphere, it is characterised in that to have
Following process and step:
A) preparation of composite nano-powder
Use mechanical attrition method, commercially available chemical pure iron powder is more stainless than putting into after uniformly mixing by certain mass with chemical pure nikel powder
In steel ball grinding jar, logical Ar gas shielded, add a small amount of ethanol, with high energy ball mill ball milling a few hours；Concrete technology parameter is as follows:
Ni:Fe=1:(2 ~ 3) (mass ratio)；
Ball: powder body=(6 ~ 10): 1(mass ratio)；
Ball-milling Time=10 ~ 40 h；
Rotational speed of ball-mill=200 ~ 400r/min
Alcohol content: 50-80ml
A diameter of 3 ~ the 5mm of stainless steel ball used in test, ball milling prepares nanoscale Fe-Ni composite granule；
B) powder after ball milling is put in mould and is sintered on vacuum discharge plasma agglomeration machine；In sintering process with 20～
The speed of 200 DEG C/min is incubated 1～20min after being warming up to sintering temperature, apply pressure 300～500MPa simultaneously, and vacuum is 3
~ 5Pa, is then cooled to room temperature, and its technological parameter is as follows:
Sintering temperature: 900 DEG C ~ 1100 DEG C；
Temperature retention time: 1～20min；
Apply pressure: 300 ~ 500MPa
Falling temperature gradient: quickly cool down；
Maximum DC-pulse intensity of flow: 300 A
C) the invar steel of sinter molding it is placed in the middle part of the upper pipe of high temperature double hose stove and closes official jargon, utilizing ionic pump to tubular type
Stove carries out evacuation 5-10 minute, is passed through hydrogen after exhausting vacuum, and the pipeline that hydrogen flows out enters by after sodium hydroxide solution again
Entering air, tube furnace parameter is provided that
Tube furnace programming rate: 10 DEG C/min of 5 DEG C/min,
Hydrogen flowing quantity: 60 mL/min 100 mL/min,
Annealing heat treatment temperature: 700 DEG C 950 DEG C
Temperature retention time: 10-25min.
D) at the end of insulation, sample is carried out that High Pressure Hydrogen air-blowing is cold or furnace cooling, when in-furnace temperature is less than 300 DEG C
After, turn off hydrogen, take out sample and test.
I.e. it is heated slowly to the temperature few higher than phase transition temperature interval, is incubated appropriate time, makes alloy be changed into β phase
Small grains；Then Slow cooling gets off, and makes β phase be changed into α phase or the biphase small grains of alpha+beta again.
The present invention has a characteristic that
1, the present invention is by the combination prepared by invar steel composite nano-powder and hydrogen thermal treatment process technology is the most orderly, and
Make full use of its respective advantage.Mechanical alloying is a nonequilibrium solid alloy process, having the prominent advantages that of it
Some alloy systems can be made to increase solid solubility, refining grain size during quick solid solution, and make alloy system diffusion uniformly,
Obtain good mechanical property.Hydrogen heat processes has elimination residual stress, and stable dimensions reduces deformation and is inclined to crackle, carefully
Change crystal grain, adjust tissue, eliminate tissue defects, homogeneous material tissue and composition, improve material property or for do with after-baking
Tissue prepares.Thus combine the tightst between granule, more uniformly spread, thus effectively reduce the hole in invar steel steel body
And crackle, make internal structure generation Light deformation, steel body structure become the finest and close.Under hydrogen state, sample is carried out at heat
Reason, makes alloy Atom interpenetrate, so that steel body structure is more equal in the case of fully reducing sample
Even.
2, the present invention is by a series of coherent techniques, can produce hole and crackle is few, and compact structure composition is uniform
Invar steel alloy material.This invention can be by the adjustment of parameter, the also preparation of other metallic alloying element suitable.
3, present invention process links up, and effect is obvious, environmentally safe, again because of the progress of current hydrogen heat treatment technology,
Safety coefficient is also greatly improved, so present invention expanding production the most suitable for industrialized.
Detailed description of the invention
Embodiment 1
Use mechanical attrition method, put into stainless after commercially available chemical pure iron powder is uniformly mixed by 1:2 mass ratio with chemical pure nikel powder
In steel ball grinding jar, logical Ar gas shielded, use the stainless steel ball of a diameter of 3mm, ball powder ratio is 6:1, adds a small amount of ethanol, at high energy
Ball mill uses rotating speed to be 200r/min, ball milling 20 hours；
Powder after ball milling is put in mould and is sintered on vacuum discharge plasma agglomeration machine；In sintering process with 20 DEG C/
After the speed of min is warming up to 900 DEG C, being incubated 20min, vacuum is 3Pa, applies pressure 300MPa simultaneously, is subsequently cooled to room
Temperature, DC-pulse intensity of flow is 300 A.
The invar steel of sinter molding is placed in high temperature double hose stove after evacuation, then is passed through hydrogen and carries out annealing at heat
Reason.Sample it is placed in the middle part of the upper pipe of high temperature double hose stove and closes official jargon, utilizing ionic pump that tube furnace carries out evacuation 5 points
Clock, makes vacuum reach 10Pa.Being passed through hydrogen after exhausting vacuum, the pipeline that hydrogen flows out is passed through sky by after sodium hydroxide solution
Gas.Tube furnace programming rate is 5 DEG C/min, and hydrogen flowing quantity is 60 mL/min, and annealing heat treatment temperature is 700 DEG C, reaches annealing
After temperature, temperature retention time 10min.At the end of insulation, sample is carried out that High Pressure Hydrogen air-blowing is cold or furnace cooling, when temperature in stove
After degree is less than 300 DEG C, turn off hydrogen, take out sample and test.
Embodiment 2
Use mechanical attrition method, put into stainless after commercially available chemical pure iron powder is uniformly mixed by 1:2 mass ratio with chemical pure nikel powder
In steel ball grinding jar, logical Ar gas shielded, use the stainless steel ball of a diameter of 3mm, ball powder ratio is 6:1, adds a small amount of ethanol, at high energy
Ball mill uses rotating speed to be 300r/min, ball milling 20 hours；
Powder after ball milling is put in mould and is sintered on vacuum discharge plasma agglomeration machine；In sintering process with 20 DEG C/
After the speed of min is warming up to 900 DEG C, being incubated 20min, vacuum is 5Pa, applies pressure 300MPa simultaneously, is subsequently cooled to room
Temperature, DC-pulse intensity of flow is 300 A.
The invar steel of sinter molding is placed in high temperature double hose stove after evacuation, then is passed through hydrogen and carries out annealing at heat
Reason.Sample it is placed in the middle part of the upper pipe of high temperature double hose stove and closes official jargon, utilizing ionic pump that tube furnace carries out evacuation 6 points
Clock, makes vacuum reach 9Pa.Being passed through hydrogen after exhausting vacuum, the pipeline that hydrogen flows out is passed through sky by after sodium hydroxide solution
Gas.Tube furnace programming rate is 6 DEG C/min, and hydrogen flowing quantity is 70 mL/min, and annealing heat treatment temperature is 750 DEG C, reaches annealing
After temperature, temperature retention time 15min.At the end of insulation, sample is carried out that High Pressure Hydrogen air-blowing is cold or furnace cooling, when temperature in stove
After degree is less than 300 DEG C, turn off hydrogen, take out sample and test.
Embodiment 3
Use mechanical attrition method, put into stainless after commercially available chemical pure iron powder is uniformly mixed by 1:2 mass ratio with chemical pure nikel powder
In steel ball grinding jar, logical Ar gas shielded, use the stainless steel ball of a diameter of 3mm, ball powder ratio is 6:1, adds a small amount of ethanol, at high energy
Ball mill uses rotating speed to be 400r/min, ball milling 20 hours；
Powder after ball milling is put in mould and is sintered on vacuum discharge plasma agglomeration machine；In sintering process with 20 DEG C/
After the speed of min is warming up to 900 DEG C, being incubated 20min, vacuum is 3Pa, applies pressure 500MPa simultaneously, is subsequently cooled to room
Temperature, DC-pulse intensity of flow is 300 A.
The invar steel of sinter molding is placed in high temperature double hose stove after evacuation, then is passed through hydrogen and carries out annealing at heat
Reason.Sample it is placed in the middle part of the upper pipe of high temperature double hose stove and closes official jargon, utilizing ionic pump that tube furnace carries out evacuation 7 points
Clock, makes vacuum reach 8Pa.Being passed through hydrogen after exhausting vacuum, the pipeline that hydrogen flows out is passed through sky by after sodium hydroxide solution
Gas.Tube furnace programming rate is 7 DEG C/min, and hydrogen flowing quantity is 80 mL/min, and annealing heat treatment temperature is 800 DEG C, reaches annealing
After temperature, temperature retention time 20min.At the end of insulation, sample is carried out that High Pressure Hydrogen air-blowing is cold or furnace cooling, when temperature in stove
After degree is less than 300 DEG C, turn off hydrogen, take out sample and test.
Embodiment 4
Use mechanical attrition method, put into stainless after commercially available chemical pure iron powder is uniformly mixed by 1:3 mass ratio with chemical pure nikel powder
In steel ball grinding jar, logical Ar gas shielded, use the stainless steel ball of a diameter of 3mm, ball powder ratio is 6:1, adds a small amount of ethanol, at high energy
Ball mill uses rotating speed to be 400r/min, ball milling 20 hours；
Powder after ball milling is put in mould and is sintered on vacuum discharge plasma agglomeration machine；In sintering process with 20 DEG C/
After the speed of min is warming up to 900 DEG C, being incubated 20min, vacuum is 5Pa, applies pressure 300MPa simultaneously, is subsequently cooled to room
Temperature, DC-pulse intensity of flow is 300 A.
The invar steel of sinter molding is placed in high temperature double hose stove after evacuation, then is passed through hydrogen and carries out annealing at heat
Reason.Sample it is placed in the middle part of the upper pipe of high temperature double hose stove and closes official jargon, utilizing ionic pump that tube furnace carries out evacuation 8 points
Clock, makes vacuum reach 7Pa.Being passed through hydrogen after exhausting vacuum, the pipeline that hydrogen flows out is passed through sky by after sodium hydroxide solution
Gas.Tube furnace programming rate is 8 DEG C/min, and hydrogen flowing quantity is 90 mL/min, and annealing heat treatment temperature is 850 DEG C, reaches annealing
After temperature, temperature retention time 25min.At the end of insulation, sample is carried out that High Pressure Hydrogen air-blowing is cold or furnace cooling, when temperature in stove
After degree is less than 300 DEG C, turn off hydrogen, take out sample and test.
Embodiment 5
Use mechanical attrition method, put into stainless after commercially available chemical pure iron powder is uniformly mixed by 1:3 mass ratio with chemical pure nikel powder
In steel ball grinding jar, logical Ar gas shielded, use the stainless steel ball of a diameter of 3mm, ball powder ratio is 6:1, adds a small amount of ethanol, at high energy
Ball mill uses rotating speed to be 400r/min, ball milling 20 hours；
Powder after ball milling is put in mould and is sintered on vacuum discharge plasma agglomeration machine；In sintering process with 20 DEG C/
After the speed of min is warming up to 1100 DEG C, being incubated 20min, vacuum is 3Pa, applies pressure 500MPa simultaneously, is subsequently cooled to room
Temperature, DC-pulse intensity of flow is 300 A.
The invar steel of sinter molding is placed in high temperature double hose stove after evacuation, then is passed through hydrogen and carries out annealing at heat
Reason.Sample it is placed in the middle part of the upper pipe of high temperature double hose stove and closes official jargon, utilizing ionic pump that tube furnace is carried out evacuation 10
Minute, make vacuum reach 6Pa.Being passed through hydrogen after exhausting vacuum, the pipeline that hydrogen flows out is passed through by after sodium hydroxide solution
Air.Tube furnace programming rate is 10 DEG C/min, and hydrogen flowing quantity is 100 mL/min, and annealing heat treatment temperature is 950 DEG C, reaches
After annealing temperature, temperature retention time 25min.At the end of insulation, sample is carried out that High Pressure Hydrogen air-blowing is cold or furnace cooling, work as stove
After interior temperature is less than 300 DEG C, turn off hydrogen, take out sample and test.
Each embodiment sample after treatment is carried out surface macroscopic view and corrosion resisting property is tested, result such as table 1 institute
Show:
From the point of view of embodiment test case, by the invar steel prepared by the present invention, there is the microstructure of dense uniform and the strongest
Corrosion resisting property, and low raw-material cost, it is possible to achieve commercial production.
Claims (1)
1. the present invention proposes a kind of method prepared by applied powder metallurgy by composite granule plasma agglomeration under vacuum conditions institute
The invar steel alloy obtained, carries out, in the face of invar steel, heat treatment of annealing the most in a hydrogen atmosphere, thus increases substantially invar
The chemical property of steel and mechanical performance, owing to the intensity of invar steel own, hardness are the highest, the step of the present invention is first to invar steel
Carrying out high annealing, then cycle annealing gradually steps up annealing temperature, the planted agent remained when preparing in eliminating invar steel rigid body
Power, and also can refine the size of the crystal grain of steel body own, thus promote its intensity and hardness, a kind of by invar steel is carried out powder
Body preparation and heat-treating methods in a hydrogen atmosphere, it is characterised in that there is following process and step:
A) preparation of composite nano-powder
Use mechanical attrition method, commercially available chemical pure iron powder is more stainless than putting into after uniformly mixing by certain mass with chemical pure nikel powder
In steel ball grinding jar, logical Ar gas shielded, add a small amount of ethanol, with high energy ball mill ball milling a few hours；Concrete technology parameter is as follows:
Ni:Fe=1:(2 ~ 3) (mass ratio)；
Ball: powder body=(6 ~ 10): 1(mass ratio)；
Ball-milling Time=10 ~ 40 h；
Rotational speed of ball-mill=200 ~ 400r/min
Alcohol content: 50-80ml
A diameter of 3 ~ the 5mm of stainless steel ball used in test, ball milling prepares nanoscale Fe-Ni composite granule；
B) powder after ball milling is put in mould and is sintered on vacuum discharge plasma agglomeration machine；In sintering process with 20～
The speed of 200 DEG C/min is incubated 1～20min after being warming up to sintering temperature, apply pressure 300～500MPa simultaneously, and vacuum is 3
~ 5Pa, is then cooled to room temperature, and its technological parameter is as follows:
Sintering temperature: 900 DEG C ~ 1100 DEG C；
Temperature retention time: 1～20min；
Apply pressure: 300 ~ 500MPa
Falling temperature gradient: quickly cool down；
Maximum DC-pulse intensity of flow: 300 A；
C) the invar steel of sinter molding it is placed in the middle part of the upper pipe of high temperature double hose stove and closes official jargon, utilizing ionic pump to tubular type
Stove carries out evacuation 5-10 minute, is passed through hydrogen after exhausting vacuum, and the pipeline that hydrogen flows out enters back into sky by after sodium hydroxide
Gas, tube furnace parameter is provided that
Tube furnace programming rate: 10 DEG C/min of 5 DEG C/min,
Hydrogen flowing quantity: 60 mL/min 100 mL/min,
Annealing heat treatment temperature: 700 DEG C 950 DEG C
Temperature retention time: 10-25min；
D) at the end of insulation, sample is carried out that High Pressure Hydrogen air-blowing is cold or furnace cooling, when in-furnace temperature less than 300 DEG C with
After, to turn off hydrogen, take out sample and test, be i.e. heated slowly to the temperature few higher than phase transition temperature interval, insulation is suitably
Time, alloy is made to be changed into the small grains of β phase；Then Slow cooling gets off, and makes β phase be changed into α phase or biphase thin of alpha+beta again
Little crystal grain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610536451.6A CN106048437A (en) | 2016-07-10 | 2016-07-10 | Method for carrying out heat treatment on invar steel in hydrogen atmosphere |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610536451.6A CN106048437A (en) | 2016-07-10 | 2016-07-10 | Method for carrying out heat treatment on invar steel in hydrogen atmosphere |
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| Publication Number | Publication Date |
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Family Applications (1)
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| CN201610536451.6A Pending CN106048437A (en) | 2016-07-10 | 2016-07-10 | Method for carrying out heat treatment on invar steel in hydrogen atmosphere |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421975A (en) * | 2017-02-13 | 2018-08-21 | 波音公司 | Densifying method and device |
| CN114959241A (en) * | 2022-06-30 | 2022-08-30 | 中国空气动力研究与发展中心高速空气动力研究所 | Postweld heat treatment process for invar steel medium plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5476633A (en) * | 1994-07-06 | 1995-12-19 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Ultrahigh-purity dimensionally stable INVAR 36 |
| CN1181609A (en) * | 1996-10-31 | 1998-05-13 | 三星电管株式会社 | Anti-doming composition for shadow-mask and processes for preparing the same |
| CN1339615A (en) * | 2000-03-28 | 2002-03-13 | 日矿金属株式会社 | Fe-Ni series alloys for punching plane shadow mask and plane shadow mask using said alloy and colour cathode ray tube |
| CN1550564A (en) * | 2003-04-30 | 2004-12-01 | 日矿金属加工株式会社 | High strength Fe-Ni-Co series alloy for shadow mask |
-
2016
- 2016-07-10 CN CN201610536451.6A patent/CN106048437A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5476633A (en) * | 1994-07-06 | 1995-12-19 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Ultrahigh-purity dimensionally stable INVAR 36 |
| CN1181609A (en) * | 1996-10-31 | 1998-05-13 | 三星电管株式会社 | Anti-doming composition for shadow-mask and processes for preparing the same |
| CN1339615A (en) * | 2000-03-28 | 2002-03-13 | 日矿金属株式会社 | Fe-Ni series alloys for punching plane shadow mask and plane shadow mask using said alloy and colour cathode ray tube |
| CN1550564A (en) * | 2003-04-30 | 2004-12-01 | 日矿金属加工株式会社 | High strength Fe-Ni-Co series alloy for shadow mask |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421975A (en) * | 2017-02-13 | 2018-08-21 | 波音公司 | Densifying method and device |
| CN108421975B (en) * | 2017-02-13 | 2022-06-14 | 波音公司 | Densification method and apparatus |
| US11584101B2 (en) | 2017-02-13 | 2023-02-21 | The Boeing Company | Densification methods and apparatuses |
| CN114959241A (en) * | 2022-06-30 | 2022-08-30 | 中国空气动力研究与发展中心高速空气动力研究所 | Postweld heat treatment process for invar steel medium plate |
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Application publication date: 20161026 |