CN106350764B - Controlled atmosphere thin layer carburizing technique - Google Patents
Controlled atmosphere thin layer carburizing technique Download PDFInfo
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- CN106350764B CN106350764B CN201611066871.9A CN201611066871A CN106350764B CN 106350764 B CN106350764 B CN 106350764B CN 201611066871 A CN201611066871 A CN 201611066871A CN 106350764 B CN106350764 B CN 106350764B
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- argon gas
- carburizing
- titanium alloy
- technique
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000005255 carburizing Methods 0.000 title claims abstract description 36
- 238000004320 controlled atmosphere Methods 0.000 title claims abstract description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910052786 argon Inorganic materials 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 33
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 25
- 239000012159 carrier gas Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001291 vacuum drying Methods 0.000 claims abstract description 7
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910010038 TiAl Inorganic materials 0.000 claims description 4
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The present invention relates to a kind of controlled atmosphere thin layer carburizing techniques, belong to field of metal material surface treatment.The present invention carries out Carburization Treatment using surface of the plasma carburising method to titanium alloy, and for this method using titanium alloy as workpiece pole, the voltage of workpiece pole is 350~400V, and the carburizing temperature of workpiece pole is 900~1000 DEG C；Using graphite as source electrode, the voltage of source electrode is 750~900V；Using argon gas as carrier gas, control the operating pressure of argon gas in 0.1Pa~30Pa, and with carburization process carry out be gradually reduced the operating pressure of argon gas.Partial pressure of this method by control carrier gas argon gas in vacuum drying oven, so that the rate of carburizing is controlled, the carburized layer intensity having the same at each thickness for being, and then promote the intensity of entire carburized surface.
Description
Technical field
The present invention relates to a kind of controlled atmosphere thin layer carburizing techniques, belong to field of metal material surface treatment.
Background technique
The alloy that other alloying elements form is added by matrix of titanium and is referred to as titanium alloy.Titanium alloy is a kind of new structure material
Material, it has excellent comprehensive performance, if density is small, specific strength and, fatigue strength and resistance to crack extension energy higher than fracture toughness
Power is good, low-temperature good toughness, and etch resistant properties are excellent.Therefore, it is obtained increasingly in industrial departments such as Aeronautics and Astronautics, chemical industry, shipbuildings
It is widely applied, development is swift and violent.Due to titanium and its excellent etch resistant properties of alloy, good mechanical property, and qualified group
Compatibility is knitted, the biomaterials such as production prosthetic appliance are also particularly suitable.Meanwhile titanium alloy have density is low, specific strength is high,
The advantages that corrosion resistance is good, processing performance is good is ideal aerospace engineering structural material.However, the technique of titanium alloy
Performance is poor, and machining is difficult, in hot-working, is very easy to absorb the impurity such as hydrogen-oxygen nitrogen carbon.It is poor that there are also wear resistences, produces work
Skill is complicated.
In order to improve the abrasion resistance of titanium alloy surface, carburizing tech can be used at present, surface is carried out to the surface of titanium alloy
Processing, however current carburizing mainly uses the gases such as methane as carbon source, and " hydrogen embrittlement " phenomenon easily occurs.
Summary of the invention
The object of the present invention is to provide a kind of controlled atmosphere thin layer carburizing techniques, to solve the problems, such as above-mentioned " hydrogen embrittlement ".
Controlled atmosphere thin layer carburizing technique, the carburization process are the technique that carburizing is carried out on titanium alloy, the technique
It is carried out in plasma carburising vacuum drying oven, specially：
Using titanium alloy as workpiece pole, the voltage of workpiece pole is 350~400V, the carburizing temperature of workpiece pole is 900~
1000℃；
Using graphite as source electrode, the voltage of source electrode is 750~900V；
Using argon gas as carrier gas, control the operating pressure of argon gas in 0.1Pa~30Pa, and with carburization process carry out make argon
The operating pressure of gas is gradually reduced,
Carburizing time is at least 0.5h.
" plasma carburising vacuum drying oven " of the present invention is commercially available.
Further, described using argon gas as carrier gas, control argon gas initialization pressure is 20~30Pa, and carburization process terminates
When argon working pressure be 0.1~5Pa；
Carburizing time is at least 3h.
Further, described using argon gas as carrier gas, control argon gas initialization pressure is 25Pa, at the end of carburization process
Argon working pressure is 1Pa；
Carburizing time is 4h.
The preferably described titanium alloy of the present invention is TiAl alloy.
It is a further object of the present invention to provide utilize titanium alloy made from above-mentioned technique.
A kind of titanium alloy of case-carbonizing, the titanium alloy surface carburized layer are 200~500 microns, the hardness of carburized layer
For 9000~12000MPa.
Beneficial effects of the present invention are：The present invention is carried out at carburizing using surface of the plasma carburising vacuum method to titanium alloy
Reason, for this method using titanium alloy as workpiece pole, the voltage of workpiece pole is 350~400V, the carburizing temperature of workpiece pole for 900~
1000℃；Using graphite as source electrode, the voltage of source electrode is 750~900V；Using argon gas as carrier gas, the operating pressure for controlling argon gas exists
0.1Pa~30Pa, and with carburization process carry out be gradually reduced the operating pressure of argon gas.This method passes through control carrier gas argon
Partial pressure of the gas in vacuum drying oven, so that the rate of carburizing is controlled, the carburized layer intensity having the same at each thickness for being, in turn
Promote the intensity of entire carburized surface.
Specific embodiment
Following non-limiting embodiments can with a person of ordinary skill in the art will more fully understand the present invention, but not with
Any mode limits the present invention.
Test method described in following embodiments is unless otherwise specified conventional method；The reagent and material, such as
Without specified otherwise, commercially obtain.
Embodiment 1
Controlled atmosphere thin layer carburizing technique, the carburization process are the technique that carburizing is carried out on titanium alloy, the technique
It is carried out in plasma carburising vacuum drying oven, specially：
Using TiAl alloy as workpiece pole, the voltage of workpiece pole is 380V, and the carburizing temperature of workpiece pole is 900 DEG C；
Using graphite as source electrode, the voltage of source electrode is 750V；
Described using argon gas as carrier gas, control argon gas initialization pressure is 25Pa, argon gas work pressure at the end of carburization process
Power is 1Pa, and carburizing time 4h at the uniform velocity reduces the operating pressure of argon gas in carburizing process.
The titanium alloy surface carburized layer is 270 microns, and the hardness of carburized layer is 9230MPa.
Embodiment 2
Controlled atmosphere thin layer carburizing technique, the carburization process are the technique that carburizing is carried out on titanium alloy, the technique
It is carried out in plasma carburising vacuum drying oven, specially：
Using TiAl alloy as workpiece pole, the voltage of workpiece pole is 400V, and the carburizing temperature of workpiece pole is 950 DEG C；
Using graphite as source electrode, the voltage of source electrode is 900V；
Described using argon gas as carrier gas, control argon gas initialization pressure is 30Pa, argon gas work pressure at the end of carburization process
Power is 0.1Pa, and carburizing time 6h at the uniform velocity reduces the operating pressure of argon gas in carburizing process.
The titanium alloy surface carburized layer is 410 microns, and the hardness of carburized layer is 11250MPa.
Claims (5)
1. controlled atmosphere thin layer carburizing technique, it is characterised in that：The carburization process is the technique that carburizing is carried out on titanium alloy,
The technique carries out in plasma carburising vacuum drying oven, specially：
Using titanium alloy as workpiece pole, the voltage of workpiece pole is 350~400V, and the carburizing temperature of workpiece pole is 900~1000 DEG C；
Using graphite as source electrode, the voltage of source electrode is 750~900V；
Using argon gas as carrier gas, control the operating pressure of argon gas in 0.1Pa~30Pa, and with carburization process carry out make argon gas
Operating pressure is gradually reduced,
Carburizing time is at least 0.5h.
2. technique according to claim 1, it is characterised in that：It is described using argon gas as carrier gas, control argon gas initialization pressure
Power is 20~30Pa, and argon working pressure is 0.1~5Pa at the end of carburization process, and argon gas is at the uniform velocity reduced in carburizing process
Operating pressure；
Carburizing time is at least 3h.
3. technique according to claim 2, it is characterised in that：It is described using argon gas as carrier gas, control argon gas initialization pressure
Power is 25Pa, and argon working pressure is 1Pa at the end of carburization process, and the operating pressure of argon gas is at the uniform velocity reduced in carburizing process；
Carburizing time is 4h.
4. technique according to claim 1, it is characterised in that：The titanium alloy is TiAl alloy.
5. utilizing titanium alloy made from technique described in claim 1, it is characterised in that：The titanium alloy surface carburized layer is 200
~500 microns, the hardness of carburized layer is 9000~12000MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066871.9A CN106350764B (en) | 2016-11-25 | 2016-11-25 | Controlled atmosphere thin layer carburizing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066871.9A CN106350764B (en) | 2016-11-25 | 2016-11-25 | Controlled atmosphere thin layer carburizing technique |
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| Publication Number | Publication Date |
|---|---|
| CN106350764A CN106350764A (en) | 2017-01-25 |
| CN106350764B true CN106350764B (en) | 2018-11-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451779A (en) * | 2002-03-11 | 2003-10-29 | 太原理工大学表面工程研究所 | Process for glow ion hydrogen-free carbonizing titanium surface |
| EP1288327B1 (en) * | 2001-09-03 | 2006-06-14 | Fuji Oozx Inc. | TI alloy surface treatment |
| CN102086501A (en) * | 2009-12-08 | 2011-06-08 | 上海汉鑫硬质合金有限公司 | Ion nitrocarburizing treatment method for iron-based sintered material |
| CN103590047A (en) * | 2013-11-13 | 2014-02-19 | 南京金鑫传动设备有限公司 | Processing method capable of preventing deformation of low-carbon steel gear |
| CN103882369A (en) * | 2014-04-11 | 2014-06-25 | 北京石油化工学院 | Graphite source electrode for glow carburizing without hydrogen |
-
2016
- 2016-11-25 CN CN201611066871.9A patent/CN106350764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1288327B1 (en) * | 2001-09-03 | 2006-06-14 | Fuji Oozx Inc. | TI alloy surface treatment |
| CN1451779A (en) * | 2002-03-11 | 2003-10-29 | 太原理工大学表面工程研究所 | Process for glow ion hydrogen-free carbonizing titanium surface |
| CN102086501A (en) * | 2009-12-08 | 2011-06-08 | 上海汉鑫硬质合金有限公司 | Ion nitrocarburizing treatment method for iron-based sintered material |
| CN103590047A (en) * | 2013-11-13 | 2014-02-19 | 南京金鑫传动设备有限公司 | Processing method capable of preventing deformation of low-carbon steel gear |
| CN103882369A (en) * | 2014-04-11 | 2014-06-25 | 北京石油化工学院 | Graphite source electrode for glow carburizing without hydrogen |
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| Publication number | Publication date |
|---|---|
| CN106350764A (en) | 2017-01-25 |
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Effective date of registration: 20201225 Address after: No. 109, Dongcang North Road, Taicang Economic Development Zone, Suzhou City, Jiangsu Province Patentee after: SUZHOU FUTENG INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 116000 floor 1-6, No. 92, Tieshan East Road, Jinzhou new district, Dalian, Liaoning Province Patentee before: DALIAN SHENGJIE HEAT TREATMENT TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Effective date of registration: 20211216 Address after: 215400 No. 20, Jian Xiong Road, science and Education Town, Taicang, Suzhou, Jiangsu Patentee after: TAICANG MIX MACHINERY EQUIPMENT Co.,Ltd. Address before: No. 109, Dongcang North Road, Taicang Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU FUTENG INTELLIGENT TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20240813 Address after: 075000 Shangyingtun Village, Kongjiazhuang Town, Wanquan District, Zhangjiakou City, Hebei Province Patentee after: Zhangjiakou Haosheng Machinery Manufacturing Co.,Ltd. Country or region after: China Address before: 215400 No. 20, Jian Xiong Road, science and Education Town, Taicang, Suzhou, Jiangsu Patentee before: TAICANG MIX MACHINERY EQUIPMENT Co.,Ltd. Country or region before: China |
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