CN102978526A - Alloy steel material for drill and preparation method - Google Patents
Alloy steel material for drill and preparation method Download PDFInfo
- Publication number
- CN102978526A CN102978526A CN2012104945877A CN201210494587A CN102978526A CN 102978526 A CN102978526 A CN 102978526A CN 2012104945877 A CN2012104945877 A CN 2012104945877A CN 201210494587 A CN201210494587 A CN 201210494587A CN 102978526 A CN102978526 A CN 102978526A
- Authority
- CN
- China
- Prior art keywords
- rare earth
- vanadium
- alloy steel
- drill bit
- iron
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention relates to an alloy steel material for a drill and a preparation method. The material comprises the following components by weight percent: 2.2-2.3% of carbon, 6.2-6.3% of chromium, 7-7.5% of tungsten, 4.2-4.5% of vanadium, 3.5-3.8% of molybdenum, 1.2-1.4% of cobalt, 2.0-2.3% of manganese, 0.5-1.0% of titanium, 0.8-1.0% of copper and aluminium, 1.1-1.3% of boron, 0.003-0.004% of rare earth containing niobium and yttrium and the balance of iron. The material has the beneficial effects that as the distribution of the wear-resistant boron element on the surface of the drill manufactured with the alloy steel produced by the material is higher than that inside the drill and such elements having effect on toughness as titanium and vanadium are uniformly distributed in the tissues, the fragility is reduced.
Description
Technical field
The invention belongs to the alloy field, refer to that especially a kind of drill bit is with alloy steel material and preparation method.
Background technology
Electric drill is a kind of widely used power tool, is widely used in building, processing and other fields.The cardinal principle of electric drill is the rotation by electric motor, drives to drive apparatus for work, thereby makes drill bit scrapings surface to pierce object, and drill bit is one of requisite parts of electric drill.
And electric drill in use, bear the Radial resistant force of motivation and drilled object, broken drill is modal infringement mode, this is because the existing drill bit that uses is guaranteeing will have in the situation of some strength with tool steel, fragility improves and toughness is not enough, therefore, fractureing appears in drill bit easily, and the wear pattern of drill bit also is one of reason that affects drill bit efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of drill bit alloy steel material, the drill bit of making by the technical program can in the situation of proof strength, improve toughness and the wear resisting property of drill bit.
The present invention is achieved by the following technical solutions:
A kind of drill bit alloy steel material, its composition is by weight percentage, the copper of the manganese of the molybdenum of the tungsten of the carbon of 2.2-2.3%, the chromium of 6.2-6.3%, 7-7.5%, the vanadium of 4.2-4.5%, 3.5-3.8%, the cobalt of 1.2-1.4%, 2.0-2.3%, the titanium of 0.5-1.0%, 0.8-1.0% and aluminium, the boron of 1.1-1.3%, the rare earth that contains niobium and yttrium of 0.003-0.004%, surplus is iron.
As further improvement, described drill bit alloy steel material, its composition is by weight percentage, 2.2% carbon, 6.25% chromium, 7.6% tungsten, 4.25% vanadium, 3.6% molybdenum, 1.3% cobalt, 2.1% manganese, 0.65% titanium, 1.0% copper and aluminium, 1.12% boron, 0.004% the rare earth that contains niobium and yttrium, surplus is iron.
The weight ratio of described copper and aluminium is 2: 1.
The weight ratio of described niobium and yttrium is 3: 2.
Described tungsten, vanadium, titanium, rare earth are respectively to add in the rare earth ferroalloy mode that ferrotungsten, vanadium iron, ferrotianium and rare earth account for weight 15%.
Described preparation method is:
Calculating each amount that forms prepares burden, its composition is by weight percentage, the copper of the manganese of the molybdenum of the tungsten of the carbon of 2.2-2.3%, the chromium of 6.2-6.3%, 7-7.5%, the vanadium of 4.2-4.5%, 3.5-3.8%, the cobalt of 1.2-1.4%, 2.0-2.3%, the titanium of 0.5-1.0%, 0.8-1.0% and aluminium, the boron of 1.1-1.3%, the rare earth that contains niobium and yttrium of 0.003-0.004%, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode;
Carbon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into and added copper and aluminium and rare earth after the stove heat fused becomes liquid again by calculating good amount, and temperature kept 1-2 hour at 1250-1350 ℃;
The assurance temperature is carried out the constant temperature casting at 1000-1050 ℃;
Temperature-reduction at constant speed is carried out in cooling stage by stage, first stage take speed as 15-20 ℃/after per second cools to 650-700 ℃, be incubated 30-60 minute, then be cooled fast to 130-150 ℃;
Normalizing, insulation was carried out quench treatment after 2-4 hour in 850-900 ℃ of normalizing furnace, quenched and adopted oil to carry out in two stages quench treatment as quenching medium; Fs carries out carrying out the subordinate phase quench treatment to 130-150 ℃ after constant temperature is quenched to 450-480 ℃ in 110-130 ℃ of oil in oil temperature is 230 ± 20 ℃ of scopes;
Tempering, insulation is 3-5 hour in 180-200 ℃ of tempering stove, naturally cooling.
The beneficial effect that the present invention compares with prior art is:
The drill bit that the steel alloy that the technical program is produced is made because being that the surface is higher than inside in wear-resisting boron abundance, and is issued evenly in tissue to elements such as the titanium of toughness slope effect, vanadium, reduced fragility.
Embodiment
Come by the following examples to explain technical scheme of the present invention in detail, should be understood that following embodiment only can be used for explaining the present invention and can not be interpreted as to be limitation of the present invention.
Embodiment 1
Described preparation method is:
Calculating each amount that forms prepares burden, its composition is by weight percentage, 2.2% carbon, 6.2% chromium, 7% tungsten, 4.2% vanadium, 3.5% molybdenum, 1.2% cobalt, 2.0% manganese, 0.5% titanium, 0.8% copper and aluminium, 1.1% boron, 0.003% the rare earth that contains niobium and yttrium, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode; The rare earth ferroalloy middle-weight rare earths accounts for 15% weight ratio, and the weight ratio of described copper and aluminium is 2: 1; The weight ratio of described niobium and yttrium is 3: 2;
Carbon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into and added copper and aluminium and rare earth after the stove heat fused becomes liquid again by calculating good amount, and temperature kept 2 hours at 1250-1350 ℃;
The assurance temperature is carried out the constant temperature casting at 1000-1050 ℃;
Temperature-reduction at constant speed is carried out in cooling stage by stage, first stage take speed as 15-20 ℃/after per second cools to 650-700 ℃, be incubated 45 minutes, then be cooled fast to 130-150 ℃;
Normalizing is carried out quench treatment after the insulation hour in 850-900 ℃ of normalizing furnace, quench to adopt oil to carry out in two stages quench treatment as quenching medium; Fs carries out carrying out the subordinate phase quench treatment to 130-150 ℃ after constant temperature is quenched to 450-480 ℃ in 110-130 ℃ of oil in oil temperature is 230 ± 20 ℃ of scopes;
Tempering, insulation is 3 hours in 180-200 ℃ of tempering stove, naturally cooling.
Embodiment 2
Described preparation method is:
Calculating each amount that forms prepares burden, its composition is by weight percentage, 2.3% carbon, 6.3% chromium, 7.5% tungsten, 4.5% vanadium, 3.8% molybdenum, 1.4% cobalt, 2.3% manganese, 1.0% titanium, 1.0% copper and aluminium, 1.3% boron, 0.004% the rare earth that contains niobium and yttrium, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode; The rare earth ferroalloy middle-weight rare earths accounts for 15% weight ratio, and the weight ratio of described copper and aluminium is 2: 1; The weight ratio of described niobium and yttrium is 3: 2;
Carbon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into and added copper and aluminium and rare earth after the stove heat fused becomes liquid again by calculating good amount, and temperature kept 2 hours at 1250-1350 ℃;
The assurance temperature is carried out the constant temperature casting at 1000-1050 ℃;
Temperature-reduction at constant speed is carried out in cooling stage by stage, first stage take speed as 15-20 ℃/after per second cools to 650-700 ℃, be incubated 60 minutes, then be cooled fast to 130-150 ℃;
Normalizing is carried out quench treatment after the insulation hour in 850-900 ℃ of normalizing furnace, quench to adopt oil to carry out in two stages quench treatment as quenching medium; Fs carries out carrying out the subordinate phase quench treatment to 130-150 ℃ after constant temperature is quenched to 450-480 ℃ in 110-130 ℃ of oil in oil temperature is 230 ± 20 ℃ of scopes;
Tempering, insulation is 3 hours in 180-200 ℃ of tempering stove, naturally cooling.
Embodiment 3
Described preparation method is:
Calculating each amount that forms prepares burden, its composition is by weight percentage, 2.2% carbon, 6.25% chromium, 7.6% tungsten, 4.25% vanadium, 3.6% molybdenum, 1.3% cobalt, 2.1% manganese, 0.65% titanium, 1.0% copper and aluminium, 1.12% boron, 0.004% the rare earth that contains niobium and yttrium, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode; The rare earth ferroalloy middle-weight rare earths accounts for 15% weight ratio, and the weight ratio of described copper and aluminium is 2: 1; The weight ratio of described niobium and yttrium is 3: 2;
Carbon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into and added copper and aluminium and rare earth after the stove heat fused becomes liquid again by calculating good amount, and temperature kept 1.5 hours at 1250-1350 ℃;
The assurance temperature is carried out the constant temperature casting at 1000-1050 ℃;
Temperature-reduction at constant speed is carried out in cooling stage by stage, first stage take speed as 15-20 ℃/after per second cools to 650-700 ℃, be incubated 60 minutes, then be cooled fast to 130-150 ℃;
Normalizing is carried out quench treatment after the insulation hour in 850-900 ℃ of normalizing furnace, quench to adopt oil to carry out in two stages quench treatment as quenching medium; Fs carries out carrying out the subordinate phase quench treatment to 130-150 ℃ after constant temperature is quenched to 450-480 ℃ in 110-130 ℃ of oil in oil temperature is 230 ± 20 ℃ of scopes;
Tempering, insulation is 3 hours in 180-200 ℃ of tempering stove, naturally cooling.
Claims (9)
1. drill bit alloy steel material, it is characterized in that: its composition is by weight percentage, the copper of the manganese of the molybdenum of the tungsten of the carbon of 2.2-2.3%, the chromium of 6.2-6.3%, 7-7.5%, the vanadium of 4.2-4.5%, 3.5-3.8%, the cobalt of 1.2-1.4%, 2.0-2.3%, the titanium of 0.5-1.0%, 0.8-1.0% and aluminium, the boron of 1.1-1.3%, the rare earth that contains niobium and yttrium of 0.003-0.004%, surplus is iron.
2. described drill bit alloy steel material according to claim 1, it is characterized in that: its composition is by weight percentage, 2.2% carbon, 6.25% chromium, 7.6% tungsten, 4.25% vanadium, 3.6% molybdenum, 1.3% cobalt, 2.1% manganese, 0.65% titanium, 1.0% copper and aluminium, 1.12% boron, 0.004% the rare earth that contains niobium and yttrium, surplus is iron.
3. described drill bit alloy steel material according to claim 1 and 2, it is characterized in that: the weight ratio of described copper and aluminium is 2: 1.
4. described drill bit alloy steel material according to claim 1 and 2, it is characterized in that: the weight ratio of described niobium and yttrium is 3: 2.
5. described drill bit alloy steel material according to claim 1 is characterized in that: described tungsten, vanadium, titanium, rare earth are respectively to add in the rare earth ferroalloy mode that ferrotungsten, vanadium iron, ferrotianium and rare earth account for weight 15%.
6. drill bit alloy steel products preparation method for material is characterized in that:
Calculating each amount that forms prepares burden, its composition is by weight percentage, the copper of the manganese of the molybdenum of the tungsten of the carbon of 2.2-2.3%, the chromium of 6.2-6.3%, 7-7.5%, the vanadium of 4.2-4.5%, 3.5-3.8%, the cobalt of 1.2-1.4%, 2.0-2.3%, the titanium of 0.5-1.0%, 0.8-1.0% and aluminium, the boron of 1.1-1.3%, the rare earth that contains niobium and yttrium of 0.003-0.004%, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode;
Carbon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into and added copper and aluminium and rare earth after the stove heat fused becomes liquid again by calculating good amount, and temperature kept 1-2 hour at 1250-1350 ℃;
The assurance temperature is carried out the constant temperature casting at 1000-1050 ℃;
Temperature-reduction at constant speed is carried out in cooling stage by stage, first stage take speed as 15-20 ℃/after per second cools to 650-700 ℃, be incubated 30-60 minute, then be cooled fast to 130-150 ℃;
Normalizing, insulation was carried out quench treatment after 2-4 hour in 850-900 ℃ of normalizing furnace, quenched and adopted oil to carry out in two stages quench treatment as quenching medium; Fs carries out carrying out the subordinate phase quench treatment to 130-150 ℃ after constant temperature is quenched to 450-480 ℃ in 110-130 ℃ of oil in oil temperature is 230 ± 20 ℃ of scopes;
Tempering, insulation is 3-5 hour in 180-200 ℃ of tempering stove, naturally cooling.
7. described drill bit alloy steel products preparation method for material according to claim 6, it is characterized in that: the weight ratio of described copper and aluminium is 2: 1.
8. described drill bit alloy steel products preparation method for material according to claim 6, it is characterized in that: the weight ratio of described niobium and yttrium is 3: 2.
9. described drill bit alloy steel products preparation method for material according to claim 6 is characterized in that: described tungsten, vanadium, titanium, rare earth are respectively to add in the rare earth ferroalloy mode that ferrotungsten, vanadium iron, ferrotianium and rare earth account for weight 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104945877A CN102978526A (en) | 2012-11-22 | 2012-11-22 | Alloy steel material for drill and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104945877A CN102978526A (en) | 2012-11-22 | 2012-11-22 | Alloy steel material for drill and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102978526A true CN102978526A (en) | 2013-03-20 |
Family
ID=47852860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104945877A Pending CN102978526A (en) | 2012-11-22 | 2012-11-22 | Alloy steel material for drill and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102978526A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978527A (en) * | 2012-11-22 | 2013-03-20 | 浙江明磊工具实业有限公司 | Alloy steel material for drill |
| CN102994894A (en) * | 2012-11-22 | 2013-03-27 | 浙江明磊工具实业有限公司 | Method for producing alloy steel material for drill bit |
| CN103820715A (en) * | 2014-01-09 | 2014-05-28 | 马鞍山市恒毅机械制造有限公司 | Heat-resisting and wear-resisting alloy steel material for drill bits and preparation method thereof |
| CN103820722A (en) * | 2014-01-09 | 2014-05-28 | 马鞍山市恒毅机械制造有限公司 | Alloy steel material for drill bits and screw taps and preparation method thereof |
| CN103820703A (en) * | 2014-01-09 | 2014-05-28 | 马鞍山市恒毅机械制造有限公司 | Alloy steel material for drill bits and preparation method thereof |
| CN105463296A (en) * | 2015-12-02 | 2016-04-06 | 苏州捷德瑞精密机械有限公司 | Preparation method of alloy material for drill bit |
| CN105908054A (en) * | 2016-06-15 | 2016-08-31 | 成都高普石油工程技术有限公司 | Preparation method for steel based on petroleum drilling exploitation drill |
| CN105908055A (en) * | 2016-06-15 | 2016-08-31 | 成都高普石油工程技术有限公司 | Preparation method of steel applied to oil drilling and production and capable of resisting pressure of high-pressure fluid |
| CN107058899A (en) * | 2017-04-19 | 2017-08-18 | 德阳六久科技有限公司 | A kind of drill bit for increasing the life-span for deep hole machining |
| CN107442819A (en) * | 2017-09-19 | 2017-12-08 | 张家港钻通设备有限公司 | A kind of high-wear-resistant alloy drill bit |
| CN108070776A (en) * | 2017-12-19 | 2018-05-25 | 南京蒙福液压机械有限公司 | A kind of alloy steel material for vane pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331395A (en) * | 1994-04-15 | 1995-12-19 | Kawasaki Steel Corp | Production of alloy steel powder for high strength sintered body and high strength sintered body |
| CN1884605A (en) * | 2006-06-30 | 2006-12-27 | 周国发 | High chromium manganese multiple element trace alloy wearable material and its production method |
| CN102433514A (en) * | 2011-11-29 | 2012-05-02 | 宁波精磊汽车零部件有限公司 | Low-alloy steel and preparation method thereof |
| CN102732809A (en) * | 2011-04-13 | 2012-10-17 | 新余市中兴机械有限责任公司 | High-strength wear-resisting alloy and preparation method thereof |
| CN102978527A (en) * | 2012-11-22 | 2013-03-20 | 浙江明磊工具实业有限公司 | Alloy steel material for drill |
| CN102994894A (en) * | 2012-11-22 | 2013-03-27 | 浙江明磊工具实业有限公司 | Method for producing alloy steel material for drill bit |
-
2012
- 2012-11-22 CN CN2012104945877A patent/CN102978526A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331395A (en) * | 1994-04-15 | 1995-12-19 | Kawasaki Steel Corp | Production of alloy steel powder for high strength sintered body and high strength sintered body |
| CN1884605A (en) * | 2006-06-30 | 2006-12-27 | 周国发 | High chromium manganese multiple element trace alloy wearable material and its production method |
| CN102732809A (en) * | 2011-04-13 | 2012-10-17 | 新余市中兴机械有限责任公司 | High-strength wear-resisting alloy and preparation method thereof |
| CN102433514A (en) * | 2011-11-29 | 2012-05-02 | 宁波精磊汽车零部件有限公司 | Low-alloy steel and preparation method thereof |
| CN102978527A (en) * | 2012-11-22 | 2013-03-20 | 浙江明磊工具实业有限公司 | Alloy steel material for drill |
| CN102994894A (en) * | 2012-11-22 | 2013-03-27 | 浙江明磊工具实业有限公司 | Method for producing alloy steel material for drill bit |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978527A (en) * | 2012-11-22 | 2013-03-20 | 浙江明磊工具实业有限公司 | Alloy steel material for drill |
| CN102994894A (en) * | 2012-11-22 | 2013-03-27 | 浙江明磊工具实业有限公司 | Method for producing alloy steel material for drill bit |
| CN103820715A (en) * | 2014-01-09 | 2014-05-28 | 马鞍山市恒毅机械制造有限公司 | Heat-resisting and wear-resisting alloy steel material for drill bits and preparation method thereof |
| CN103820722A (en) * | 2014-01-09 | 2014-05-28 | 马鞍山市恒毅机械制造有限公司 | Alloy steel material for drill bits and screw taps and preparation method thereof |
| CN103820703A (en) * | 2014-01-09 | 2014-05-28 | 马鞍山市恒毅机械制造有限公司 | Alloy steel material for drill bits and preparation method thereof |
| CN105463296A (en) * | 2015-12-02 | 2016-04-06 | 苏州捷德瑞精密机械有限公司 | Preparation method of alloy material for drill bit |
| CN105908054A (en) * | 2016-06-15 | 2016-08-31 | 成都高普石油工程技术有限公司 | Preparation method for steel based on petroleum drilling exploitation drill |
| CN105908055A (en) * | 2016-06-15 | 2016-08-31 | 成都高普石油工程技术有限公司 | Preparation method of steel applied to oil drilling and production and capable of resisting pressure of high-pressure fluid |
| CN107058899A (en) * | 2017-04-19 | 2017-08-18 | 德阳六久科技有限公司 | A kind of drill bit for increasing the life-span for deep hole machining |
| CN107442819A (en) * | 2017-09-19 | 2017-12-08 | 张家港钻通设备有限公司 | A kind of high-wear-resistant alloy drill bit |
| CN108070776A (en) * | 2017-12-19 | 2018-05-25 | 南京蒙福液压机械有限公司 | A kind of alloy steel material for vane pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102978526A (en) | Alloy steel material for drill and preparation method | |
| CN102994894A (en) | Method for producing alloy steel material for drill bit | |
| CN103352112B (en) | Cryogenic process for prolonging service life of jet-moulded high-speed steel milling cutter | |
| CN104099531A (en) | High-hardness and wear-resistant ball and preparation method thereof | |
| CN103695792A (en) | High carbon alloy steel wear-resistance valve material and preparation method thereof | |
| CN103667944B (en) | A kind of super wear-resisting high hardness alloy Steel material and preparation method thereof for pump | |
| CN103436805A (en) | Preparation method for alloy-steel roller | |
| CN104164627B (en) | A kind of running roller high strength alloy steel and manufacture method thereof | |
| CN102978527A (en) | Alloy steel material for drill | |
| CN103572168A (en) | Tool steel material for saw blades and preparation method thereof | |
| CN103131957B (en) | Tool steel material for hedge trimmer blades and preparation method thereof | |
| CN106402333B (en) | A kind of wear-resistant gear | |
| CN103014556A (en) | Corrosion-resisting ferroalloy material for fastener and preparation method thereof | |
| CN108048749A (en) | A kind of firm gear of harmonic speed reducer and preparation method thereof | |
| CN103572167A (en) | Preparation method of tool steel material for saw blades | |
| CN102994912A (en) | Stator of homogeneous mixing pump and preparation method thereof | |
| CN104480371A (en) | Preparation method of wear-resistant ferroalloy | |
| CN105543670A (en) | High-hardness and high-strength alloy steel and preparing method | |
| CN103572169A (en) | Tool steel material for saw blades | |
| CN102978521A (en) | Stator and rotor of homogeneous mixing pump and method for preparing same | |
| CN104195571A (en) | Treatment technique capable of enhancing wear resistance of bearing | |
| CN104120331A (en) | Antifatigue liner plate with high toughness and hardness for ball mill | |
| CN102747288B (en) | Component formula and heat treatment method of motor shaft material used in high-speed railway vehicles | |
| CN104404386A (en) | Preparation method of iron alloy | |
| CN102899585A (en) | High-hardness and high-abrasion-resistance iron alloy material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |