CN103131948A - Preparation method of high-strength T-shaped bolt - Google Patents
Preparation method of high-strength T-shaped bolt Download PDFInfo
- Publication number
- CN103131948A CN103131948A CN2013100421345A CN201310042134A CN103131948A CN 103131948 A CN103131948 A CN 103131948A CN 2013100421345 A CN2013100421345 A CN 2013100421345A CN 201310042134 A CN201310042134 A CN 201310042134A CN 103131948 A CN103131948 A CN 103131948A
- Authority
- CN
- China
- Prior art keywords
- bolt
- parts
- temperature
- treatment
- strength
- 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
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a preparation method of a high-strength T-shaped bolt. The preparation method is mainly characterized in that machining steps comprise T-shaped rod material casting and the like. The T-shaped rod material casting comprises that 12-14 parts by weight of waste iron are first fed into a medium frequency furnace to be melted into molten iron, when temperature inside the medium frequency furnace rises to 1000-1200 DEG C, 30-35 parts by weight of steel ingot, 30-35 parts by weight of cast iron and 12-16 parts by weight of foundry returns are then fed into the molten iron, and at the same time, a layer of warm-keeping covering agent is sprinkled on the surface of the solution for covering, then slagging is conducted, and when temperature inside the medium frequency furnace rises to 1400 DEG C for discharging, pouring is conducted. According to the preparation method of the high-strength T-shaped bolt, cold extruding technology bolt machining is adopted, so that the strength of the bolt is improved, a hardness value and a strength value needed by the high-strength bolt are achieved, and the problems of delayed fracture and fatigue fracture of the bolt under high strength are solved, and in the use process, connection is reliable, the bolt is not prone to fracture, service life of the bolt is prolonged, and use demands to the high-strength bolt in all industries in the society are satisfied.
Description
Technical field
The present invention relates to the working method of bolt, especially a kind of preparation method of high strength tommyhead bolt.
Background technology
Wall screw is fastening piece commonly used in machinery industry, and present processing mode is generally the moulding of turning, and intensity often is difficult to guarantee, sometimes in use produce turn around, the dangerous phenomenon such as bar section fracture, endanger very large to industrial production.Therefore the high strength bolt production method is studied and improved, guaranteed the quality stability of high strength bolt, technology and expanding economy are had vital role.In addition, when bolt was in relatively moist environment, the corrosion that gets rusty easily finally caused fracture or crackle, forms potential accident source.
Given this, be necessary to provide a kind of wall screw preparation method, produce more corrosion-resistant, more anti abrasive high strength bolt.
Summary of the invention
The object of the invention is to avoid weak point of the prior art, and a kind of preparation method of high strength tommyhead bolt is provided.
Purpose of the present invention is as follows by the following technical programs:
The preparation method of high strength tommyhead bolt, procedure of processing comprises:
a, casting T shape bar material, by weight, first be fused into molten iron in the scrap iron input middle frequency furnace with 12-14 part, when the temperature in middle frequency furnace rises to 1000～1220 ℃, drop into again the steel ingot of 30-35 part, the foundry returns of the pig iron of 30-35 part and 12-16 part, fusing, sprinkling the one layer of heat preservation insulating covering agent to molten surface simultaneously covers, then deslagging, add Rhometal after deslagging, the alloys such as ferrosilicon, when coming out of the stove during 1400 ℃ of temperature in middle frequency furnace, pour into a mould, the weight percent of each chemical composition of control lever material blank should satisfy following requirement: C 0.27～0.35, Mn 0.25～0.33, V 0.05-0.08, Si 0.25～0.35, W 0.01-0.04, P≤0.025, S≤0.035, Ni 0.45～0.60, Sn 0.20～0.30, Cu 0.45～0.55, surplus is iron,
T shape bar material after b, process casting is done cleanup acid treatment, alkali cleaning is processed; According to the wire diameter requirement of bolt, it is taken out line, so that described T shape bar material is retracted to the required wire diameter of bolt; The T shape bar material that shrinks after wire diameter is cut to the required length of bolt, and the T shape bar material after cutting off is at normal temperatures put into the mold cavity that is coated with plant ash, makes the required head of T shape bar material formation bolt and bar section size with upset force; Utilize precision lathe at the periphery turning formation screw thread of T shape bar material bar section, the cutter on lathe is Sintox, and the workpiece velocity of rotation guarantees at 3350-3550r.P.M, and begins feed by the relative end of disc head portions, cutting fluid employing water-base cutting fluid;
C, bolt is carried out hot intensive treatment, namely first carried out fs thermal treatment 2-3 hour at 600 ℃～620 ℃ temperature, then carry out the two-stage and strengthen thermal treatment 4～5 hours at 620 ℃～650 temperature; Phase III is to carry out phase III thermal treatment 2-3 hour at 620 ℃～630 ℃ temperature;
D, thermal treatment
With the bolt outside screw of precision lathe turning moulding under 700 ± 5 ℃, quench with quenching oil, bolt after quenching again carries out tempering under 500 ℃, time length 60-80 minute, with the polished rod section of bolt under 800 ℃ ± 20 ℃, the use hardening liquid quenches, bolt after quenching again carries out tempering under 550 ℃, time length 60-70 minute, carry out at last carburizing treatment, carburizing agent is sent in tempering stove carburizing treatment 80～120min in 1100～1150 ℃ of temperature ranges;
E, Passivation Treatment, it is to process 4-5min in the inactivating treatment liquid of 100-120 ℃ that bolt after thermal treatment is immersed temperature, described inactivating treatment liquid is that the material by the following weight proportioning is mixed with and forms: 4～6 parts of water-soluble molybdates, 8～12 parts of diethanolamine, 70～100 parts of alkaline silica sols, 80～100 parts of water soluble acrylic resins, 80-100 part water;
F, boronising are processed, by weight: at first 70-80 part Borax pentahydrate is put into processing vessel, be heated to 680 ℃, then add 12-15 part SiC powder to stir, treat that Borax pentahydrate melts fully, when the bath temperature reaches 800 ℃, then add 8-12 part Na
2CO
3, strengthen being stirred to the bath temperature and reach 930 ℃, the bolt after Passivation Treatment is placed into boronising in borax bath, the bath temperature keeps 850 ℃ of constant temperature, time 2-4 hour, naturally cools to normal temperature;
G, bonderizing, bolt after boronising is processed is put into 50-60 ℃ of etching solution and is soaked 2-5min, clean again, air-dry, bolt gets product, wherein the weight part of each moiety of etching solution is: 60～80 parts of poly(oxyethylene glycol) 400,25～35 parts of Mazhev salts, 4～6 parts of SODIUMNITRATE, 1.5～3.5 parts of iron trichlorides, 100-120 part water.
Described Passivation Treatment, it is to process 4.5min in the inactivating treatment liquid of 110 ℃ that bolt after thermal treatment is immersed temperature, inactivating treatment liquid is that the material by the following weight proportioning is prepared from: 5 parts of water-soluble molybdates, 10 parts of diethanolamine, 85 parts of alkaline silica sols, 90 parts of water soluble acrylic resins, 90 parts of water.
The preparation method of high strength tommyhead bolt of the present invention, adopt the processing of cold-extrusion technology bolt, improved the intensity of bolt, reached required hardness value, the intensity level of high strength bolt, solved delayed fracture and the repeated stress failure of bolt under the high strength, in use connected reliably, not frangibility, improve bolt life, satisfied social upper every profession and trade to the user demand of high strength bolt.
Beneficial effect of the present invention is:
1, refinement of the present invention the shaping complete processing of material, make wire rod hardness moderate, the surface has good phosphatization epithelium, lubricity is good, wire rod is without hydrogen embrittlement, plasticity-is good;
2, bolt of the present invention has carried out repeatedly cold-heading extrusion molding, has improved the high strength bolt bulk strength, and the bolt precision is high, and quality is good, and production efficiency is high, and without waste material, unit cost descends greatly without cutting.Obtain bulk metal and flowed to the consistent bolt of direction, greatly improved its tensile strength;
3, the invention of thermal treatment process has broken through the limit of the alloy steel products of bolt prior heat treatment, the leading domestic Investment in fastener industry level of the characteristic of its super-strong and super-toughened property.
Embodiment
The invention will be further described with the following Examples:
The preparation method of high strength tommyhead bolt, procedure of processing comprises:
a, casting T shape bar material, by weight, first be fused into molten iron in the scrap iron input middle frequency furnace with 12-14 part, when the temperature in middle frequency furnace rises to 1000～1220 ℃, drop into again the steel ingot of 30-35 part, the foundry returns of the pig iron of 30-35 part and 12-16 part, fusing, sprinkling the one layer of heat preservation insulating covering agent to molten surface simultaneously covers, then deslagging, add Rhometal after deslagging, the alloys such as ferrosilicon, when coming out of the stove during 1400 ℃ of temperature in middle frequency furnace, pour into a mould, the weight percent of each chemical composition of control lever material blank should satisfy following requirement: C 0.27～0.35, Mn 0.25～0.33, V 0.05-0.08, Si 0.25～0.35, W 0.01-0.04, P≤0.025, S≤0.035, Ni 0.45～0.60, Sn 0.20～0.30, Cu 0.45～0.55, surplus is iron,
T shape bar material after b, process casting is done cleanup acid treatment, alkali cleaning is processed; According to the wire diameter requirement of bolt, it is taken out line, so that described T shape bar material is retracted to the required wire diameter of bolt; The T shape bar material that shrinks after wire diameter is cut to the required length of bolt, and the T shape bar material after cutting off is at normal temperatures put into the mold cavity that is coated with plant ash, makes the required head of T shape bar material formation bolt and bar section size with upset force; Utilize precision lathe at the periphery turning formation screw thread of T shape bar material bar section, the cutter on lathe is Sintox, and the workpiece velocity of rotation guarantees at 3350-3550r.P.M, and begins feed by the relative end of disc head portions, cutting fluid employing water-base cutting fluid;
C, bolt is carried out hot intensive treatment, namely first carried out fs thermal treatment 2-3 hour at 600 ℃～620 ℃ temperature, then carry out the two-stage and strengthen thermal treatment 4～5 hours at 620 ℃～650 temperature; Phase III is to carry out phase III thermal treatment 2-3 hour at 620 ℃～630 ℃ temperature;
D, thermal treatment
With the bolt outside screw of precision lathe turning moulding under 700 ± 5 ℃, quench with quenching oil, bolt after quenching again carries out tempering under 500 ℃, time length 60-80 minute, with the polished rod section of bolt under 800 ℃ ± 20 ℃, the use hardening liquid quenches, bolt after quenching again carries out tempering under 550 ℃, time length 60-70 minute, carry out at last carburizing treatment, carburizing agent is sent in tempering stove carburizing treatment 80～120min in 1100～1150 ℃ of temperature ranges;
E, Passivation Treatment, it is to process 4.5min in the inactivating treatment liquid of 110 ℃ that bolt after thermal treatment is immersed temperature, inactivating treatment liquid is that the material by the following weight proportioning is mixed with and forms: 5 parts of water-soluble molybdates, 10 parts of diethanolamine, 85 parts of alkaline silica sols, 90 parts of water soluble acrylic resins, 90 parts of water;
F, boronising are processed, by weight: at first 70-80 part Borax pentahydrate is put into processing vessel, be heated to 680 ℃, then add 12-15 part SiC powder to stir, treat that Borax pentahydrate melts fully, when the bath temperature reaches 800 ℃, then add 8-12 part Na
2CO
3, strengthen being stirred to the bath temperature and reach 930 ℃, the bolt after Passivation Treatment is placed into boronising in borax bath, the bath temperature keeps 850 ℃ of constant temperature, time 2-4 hour, naturally cools to normal temperature;
G, bonderizing, bolt after boronising is processed is put into 50-60 ℃ of etching solution and is soaked 2-5min, clean again, air-dry, bolt gets product, wherein the weight part of each moiety of etching solution is: 60～80 parts of poly(oxyethylene glycol) 400,25～35 parts of Mazhev salts, 4～6 parts of SODIUMNITRATE, 1.5～3.5 parts of iron trichlorides, 100-120 part water.
The bolt of producing according to the preparation method of high strength tommyhead bolt of the present invention, as follows through detecting its mechanical property numerical value of test, the bolt centre hardness reaches 42-45HRC, tensile strength reaches 1214Mpa, yield strength reaches 1225Mpa, unit elongation is greater than 12%, relative reduction in area is greater than 33%, and impelling strength is greater than 44J/cm
2, the high 11-13% of bolt that comprehensive mechanical performance produces than existing technique.
Should be noted that at last; above embodiment only is used for technical scheme of the present invention being described but not limiting the scope of the invention; although with reference to preferred embodiment, the present invention has been done detailed description; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not break away from essence and the scope of technical solution of the present invention.
Claims (2)
1. the preparation method of high strength tommyhead bolt, is characterized in that, procedure of processing comprises:
a, casting T shape bar material, by weight, first be fused into molten iron in the scrap iron input middle frequency furnace with 12-14 part, when the temperature in middle frequency furnace rises to 1000～1220 ℃, drop into again the steel ingot of 30-35 part, the foundry returns of the pig iron of 30-35 part and 12-16 part, fusing, sprinkling the one layer of heat preservation insulating covering agent to molten surface simultaneously covers, then deslagging, add Rhometal after deslagging, the alloys such as ferrosilicon, when coming out of the stove during 1400 ℃ of temperature in middle frequency furnace, pour into a mould, the weight percent of each chemical composition of control lever material blank should satisfy following requirement: C 0.27～0.35, Mn 0.25～0.33, V 0.05-0.08, Si 0.25～0.35, W 0.01-0.04, P≤0.025, S≤0.035, Ni 0.45～0.60, Sn 0.20～0.30, Cu 0.45～0.55, surplus is iron,
T shape bar material after b, process casting is done cleanup acid treatment, alkali cleaning is processed; According to the wire diameter requirement of bolt, it is taken out line, so that described T shape bar material is retracted to the required wire diameter of bolt; The T shape bar material that shrinks after wire diameter is cut to the required length of bolt, and the T shape bar material after cutting off is at normal temperatures put into the mold cavity that is coated with plant ash, makes the required head of T shape bar material formation bolt and bar section size with upset force; Utilize precision lathe at the periphery turning formation screw thread of T shape bar material bar section, the cutter on lathe is Sintox, and the workpiece velocity of rotation guarantees at 3350-3550r.P.M, and begins feed by the relative end of disc head portions, cutting fluid employing water-base cutting fluid;
C, bolt is carried out hot intensive treatment, namely first carried out fs thermal treatment 2-3 hour at 600 ℃～620 ℃ temperature, then carry out the two-stage and strengthen thermal treatment 4～5 hours at 620 ℃～650 temperature; Phase III is to carry out phase III thermal treatment 2-3 hour at 620 ℃～630 ℃ temperature;
D, thermal treatment
With the bolt outside screw of precision lathe turning moulding under 700 ± 5 ℃, quench with quenching oil, bolt after quenching again carries out tempering under 500 ℃, time length 60-80 minute, with the polished rod section of bolt under 800 ℃ ± 20 ℃, the use hardening liquid quenches, bolt after quenching again carries out tempering under 550 ℃, time length 60-70 minute, carry out at last carburizing treatment, carburizing agent is sent in tempering stove carburizing treatment 80～120min in 1100～1150 ℃ of temperature ranges;
E, Passivation Treatment, it is to process 4-5min in the inactivating treatment liquid of 100-120 ℃ that bolt after thermal treatment is immersed temperature, described inactivating treatment liquid is that the material by the following weight proportioning is mixed with and forms: 4～6 parts of water-soluble molybdates, 8～12 parts of diethanolamine, 70～100 parts of alkaline silica sols, 80～100 parts of water soluble acrylic resins, 80-100 part water;
F, boronising are processed, by weight: at first 70-80 part Borax pentahydrate is put into processing vessel, be heated to 680 ℃, then add 12-15 part SiC powder to stir, treat that Borax pentahydrate melts fully, when the bath temperature reaches 800 ℃, then add 8-12 part Na
2CO
3, strengthen being stirred to the bath temperature and reach 930 ℃, the bolt after Passivation Treatment is placed into boronising in borax bath, the bath temperature keeps 850 ℃ of constant temperature, time 2-4 hour, naturally cools to normal temperature;
G, bonderizing, bolt after boronising is processed is put into 50-60 ℃ of etching solution and is soaked 2-5min, clean again, air-dry, bolt gets product, wherein the weight part of each moiety of etching solution is: 60～80 parts of poly(oxyethylene glycol) 400,25～35 parts of Mazhev salts, 4～6 parts of SODIUMNITRATE, 1.5～3.5 parts of iron trichlorides, 100-120 part water.
2. the preparation method of high strength tommyhead bolt according to claim 1, it is characterized in that: described Passivation Treatment, it is to process 4.5min in the inactivating treatment liquid of 110 ℃ that bolt after thermal treatment is immersed temperature, inactivating treatment liquid is that the material by the following weight proportioning is prepared from: 5 parts of water-soluble molybdates, 10 parts of diethanolamine, 85 parts of alkaline silica sols, 90 parts of water soluble acrylic resins, 90 parts of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100421345A CN103131948A (en) | 2013-02-04 | 2013-02-04 | Preparation method of high-strength T-shaped bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100421345A CN103131948A (en) | 2013-02-04 | 2013-02-04 | Preparation method of high-strength T-shaped bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103131948A true CN103131948A (en) | 2013-06-05 |
Family
ID=48492394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100421345A Pending CN103131948A (en) | 2013-02-04 | 2013-02-04 | Preparation method of high-strength T-shaped bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103131948A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400359A (en) * | 2014-11-28 | 2015-03-11 | 杨帆 | Method for preparing foundation bolts |
| CN104625617A (en) * | 2014-12-13 | 2015-05-20 | 海盐双赢管件制造有限公司 | High-strength bolt production process |
| CN105149866A (en) * | 2015-07-16 | 2015-12-16 | 江苏永昊高强度螺栓有限公司 | Method for machining high-strength T-shaped bolt |
| CN105154785A (en) * | 2015-07-16 | 2015-12-16 | 江苏永昊高强度螺栓有限公司 | High-strength bolt and manufacturing method thereof |
| CN107858608A (en) * | 2017-11-18 | 2018-03-30 | 蚌埠市嘉实机电设备制造有限公司 | A kind of manufacture method of bent axle high performance alloys mould |
| CN108487467A (en) * | 2018-03-20 | 2018-09-04 | 浙江建业幕墙装饰有限公司 | A kind of steel construction assembled sunlight room |
| CN110438290A (en) * | 2019-07-13 | 2019-11-12 | 海盐县机械有限公司 | A kind of production technology of hex bolts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4442562A (en) * | 1982-05-07 | 1984-04-17 | Russo Peter J | Method of forming anchor bolts |
| JP2000073138A (en) * | 1998-08-26 | 2000-03-07 | Nkk Corp | Steel for bolt excellent in sulfuric acid corrosion- resistance |
| CN101169150A (en) * | 2007-11-29 | 2008-04-30 | 贵州航天新力铸锻有限责任公司 | Million - kilowatts class nuclear power station reactor main bolt production process |
| CN102072234A (en) * | 2010-11-19 | 2011-05-25 | 浙江高强度紧固件有限公司 | Production process of nuclear bolt |
| CN102319990A (en) * | 2011-09-30 | 2012-01-18 | 山推工程机械股份有限公司 | Manufacturing process of low-carbon high-strength bolt for track |
-
2013
- 2013-02-04 CN CN2013100421345A patent/CN103131948A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4442562A (en) * | 1982-05-07 | 1984-04-17 | Russo Peter J | Method of forming anchor bolts |
| JP2000073138A (en) * | 1998-08-26 | 2000-03-07 | Nkk Corp | Steel for bolt excellent in sulfuric acid corrosion- resistance |
| CN101169150A (en) * | 2007-11-29 | 2008-04-30 | 贵州航天新力铸锻有限责任公司 | Million - kilowatts class nuclear power station reactor main bolt production process |
| CN102072234A (en) * | 2010-11-19 | 2011-05-25 | 浙江高强度紧固件有限公司 | Production process of nuclear bolt |
| CN102319990A (en) * | 2011-09-30 | 2012-01-18 | 山推工程机械股份有限公司 | Manufacturing process of low-carbon high-strength bolt for track |
Non-Patent Citations (1)
| Title |
|---|
| 王涛 等: "螺栓热处理淬火介质的选用及常见问题处理", 《第十次全国热处理大会论文集》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400359A (en) * | 2014-11-28 | 2015-03-11 | 杨帆 | Method for preparing foundation bolts |
| CN104625617A (en) * | 2014-12-13 | 2015-05-20 | 海盐双赢管件制造有限公司 | High-strength bolt production process |
| CN105149866A (en) * | 2015-07-16 | 2015-12-16 | 江苏永昊高强度螺栓有限公司 | Method for machining high-strength T-shaped bolt |
| CN105154785A (en) * | 2015-07-16 | 2015-12-16 | 江苏永昊高强度螺栓有限公司 | High-strength bolt and manufacturing method thereof |
| CN107858608A (en) * | 2017-11-18 | 2018-03-30 | 蚌埠市嘉实机电设备制造有限公司 | A kind of manufacture method of bent axle high performance alloys mould |
| CN108487467A (en) * | 2018-03-20 | 2018-09-04 | 浙江建业幕墙装饰有限公司 | A kind of steel construction assembled sunlight room |
| CN110438290A (en) * | 2019-07-13 | 2019-11-12 | 海盐县机械有限公司 | A kind of production technology of hex bolts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103128506B (en) | The anti-preparation method of foot bolt yieldly | |
| CN103131948A (en) | Preparation method of high-strength T-shaped bolt | |
| CN103205641A (en) | Preparation method for high-strength foundation bolt | |
| CN103088268B (en) | The preparation method of fastening bolt used for automobile wheels | |
| CN103205642A (en) | Preparation method for wear-resistant check bolt | |
| CN103128505B (en) | The preparation method of high-strength steel cable bolt | |
| CN101456069A (en) | Bimetal composite hammer manufacture method and hammer handler precasting products | |
| CN103089781A (en) | Method for machining high-strength double end bolt | |
| CN103084532A (en) | Method for machining T-shaped bolt | |
| CN103088266A (en) | Forging method for foundation bolt | |
| CN104400359A (en) | Method for preparing foundation bolts | |
| CN103131949A (en) | Preparation method of high-strength aluminum alloy flange bolt | |
| CN103131954A (en) | Preparation method of fracture-resistant steel rope bolt | |
| CN103133481B (en) | The preparation method of abrasion-resistant foundation bolt | |
| CN103088267A (en) | Preparation method of lengthened bolt | |
| CN103084523A (en) | Method for machining high-strength U-shaped bolt | |
| CN103084798A (en) | Method for forging high-strength bolt | |
| CN102974771A (en) | Casting forming preparation method of pressure reducing valve body | |
| CN107201475A (en) | A kind of casting preparation method of valve body | |
| CN103028685A (en) | Processing method for high-class bolt | |
| CN103133485A (en) | Method for manufacturing abrasion-resistant U-shaped bolt | |
| CN103084797A (en) | Method for forging bolt for caterpillar track of excavator | |
| CN103203593B (en) | The preparation method of high strength excavator bolt | |
| CN103088271A (en) | Preparation method of high-strength anti-corrosion bolt | |
| CN103084524B (en) | Flange bolt forging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130605 |