CN105838849A - Precise induction heater applied to heavy rail and guide transportation mechanism - Google Patents
Precise induction heater applied to heavy rail and guide transportation mechanism Download PDFInfo
- Publication number
- CN105838849A CN105838849A CN201610194397.1A CN201610194397A CN105838849A CN 105838849 A CN105838849 A CN 105838849A CN 201610194397 A CN201610194397 A CN 201610194397A CN 105838849 A CN105838849 A CN 105838849A
- Authority
- CN
- China
- Prior art keywords
- rail
- induction
- guide
- transportation
- magnetic sheet
- 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
Classifications
-
- 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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Induction Heating (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a precise induction heater applied to a heavy rail and a guide transportation mechanism. The mechanism mainly comprises a cooling water pipe, a peach center groove, a rail head, a guide bracket, a guide wheel, a main bracket, an absorption magnetic plate, a conveying gear, an overhead plate, an end plate, a fixed end cover, a transportation shaft, a bonding magnetic plate, a guide shaft, a magnetic conductor, an induction coil, a transportation chain, an inductor and a transportation steel rail. The peach center type induction heater is used for performing the production line induction heat treatment for the rail head position of the whole transportation steel rail; and in the position needing precise heat treatment and corresponding to the rail head, the peach center groove and the magnetic conductor structure are additionally manufactured at the part corresponding to the induction coil, so that the hardenability degree and the hardenability layer at the important stress part of the steel rail reach the national standard values. The whole transportation mechanism uses high-temperature-resistance transportation chain for performing the production line process, and is matched with the effects of the guide wheel and the magnetic plate to fully guarantee stability of the induction heat treatment process of the transportation steel rail.
Description
Present disclosure design belongs to precision metal technical field of heat treatment,
Background technology is transported to high speed, heavy duty and the development in large conveying quantity direction along with railway and mineral products, to rail
Proposing requirements at the higher level, its obdurability, wearability and fatigue resistance all await improving so that rail Developing Tendency
To heavy rail character, in order to improve heavy rail service life and performance, the most all heat-treatment of rail technology is entered one
Step research, to improve heat-treatment of rail intensity, meets railway and the fast-developing demand of mineral products transport, should refer to
Go out quality and the performance of heat-treated rail, will depend upon which that firing equipment that Technology for Heating Processing is relevant and cooling set
Standby.And in rail running, rail directly contacts with train side wheel, bears the wheel load that top is transmitted
Effect, rail is also made by temperature loading, gapless track beam rail interaction force, braking force of train etc. in addition
With, in addition to producing huge wheel Rail Contact Stresses, also can produce bending, torsion, shear stress etc., stress
Situation is sufficiently complex, but the main stress of rail and serious wear position are rail head, specifically refer to steel
Rail end face and both sides end face, in corresponding actual plant production processes processing, it is desirable to rail chemical composition
Dependable performance, case depth shape are up to standard, hardened layer performance number is qualified, but present rail is raw
In production. art, focus mostly on greatly concern research sensing heating frequency and quenching technical, for the sensing that rail is supporting
The process of coil just seem ratio lower end, rail head end face and end face stress more complicated various, abrasion tighter
Weight, the case depth for its sensing heating can not be equal to other positions, if general heat treatment coil meeting
Produce the overheated burning in other positions situation, damage rail interior tissue situation.In rail sensing heating process,
Also it is considerable for the stability of its transport establishment and reliability for sensing heating uniformity, rail
Sensing heating is a successive pipelined process, the thermostability of transport establishment and the fixed guide to rail
Property also be research emphasis.
The summary of the invention present invention provides one can reach its hardening depth criterion of acceptability of rail difference forced position,
Improve being applied to heavy rail precision sensing heater and guiding transport establishment of mechanics property of rail.
The invention mainly comprises cooling water pipe, Fructus Persicae heart groove, rail head, guiding trestle, directive wheel, main support,
Absorption magnetic sheet, transmission gear, Roofing slab, end plate, fixing end cap, transport axle, adhere to magnetic sheet, the axis of guide,
Magnetic conductor, induction coil, chain, induction apparatus and conveying rail.
Wherein, being equipped with main support in the bottom at conveying rail two ends, the cross section of main support is U-shaped.Two
It is respectively fixedly connected with transport axle between the middle part of individual main support two sides, overlaps respectively at the middle part of each transport axle
Connect a transmission gear, each transmission gear be respectively provided on two sides with a fixing end cap, during fixing end cap is
Portion is provided with the circular flat board of through hole, and fixing end cap is each provided at transporting on axle.By defeated between two transmission gears
Chain is sent to be connected.The fixing connection end plate in each chain link both sides of chain, end plate is square plate.?
The end plate top of each chain link both sides, one Roofing slab of fixing connection, Roofing slab is the channel steel type of one end open
Hollow plate, is provided with square groove, each square recessed on the outer wall of each Roofing slab other end afterbody opening part
Absorption magnetic sheet is studded with in groove.Between the homonymy on two main support tops, it is respectively fixedly connected with a guiding
Frame, the cross section of guiding trestle is half I shape, and the opening of two guiding trestles is relative.In each guiding
Internal stent, the position adjacent with the opening of guiding trestle, it is respectively equipped with an axis of guide, leads each
A directive wheel it is socketed respectively on axle.The outer face of two directive wheels connects with the web of the rail friction of conveying rail
Touch.The flange of rail at conveying rail is uniformly provided with adhesion magnetic sheet, adheres to magnetic sheet corresponding with the position of absorption magnetic sheet.
Being provided with induction apparatus near end face and the two sides of conveying rail, induction apparatus is by the induction coil of some Fructus Persicae heart shaped shapes
Composition, often group induction coil is symmetrical relative to the centrage of the rail head of conveying rail.Often organizing induction coil
Inner face is all adjacent with cooling water pipe.In difference on the end face of conveying rail and the induction coil of two sides
It is provided with the Fructus Persicae heart groove of indent, at the inside embedded rectangle magnetic conductor of each Fructus Persicae heart groove.Two ends of induction apparatus
Between do not close connection, an end of induction apparatus is connected with positive source, the other end and power cathode phase
Even.
Conveying rail in use, is positioned in whole transport establishment by the present invention, and bottom adheres to magnetic sheet and passes through
Whole conveying rail is carried out middle fixing by the absorption magnetic sheet at Roofing slab top, the guiding trestle at main support top
Internal directive wheel and the web of the rail both ends of the surface CONTACT WITH FRICTION carrying rail, at the streamline heat to whole conveying rail
Reason ensures that stable guiding is fixed, and turns on the power switch simultaneously, and induction apparatus one end connects positive source, the other end
Connecting power cathode, high frequency electric annular between each arrangement induction coil is connected, when conveying rail enters sensing
During coil bottom, rail head is carried out high-frequency induction heating process, often the Fructus Persicae heart on group induction coil correspondence position
Groove tracking crown end face and both sides end face carry out concentrating induction heat treatment, are ensureing what other location sensitives processed
On rationality base, correspondence position is installed magnetic conductor so that its position quench-hardened case and hardness number reach
National standard, cooling water pipe carries out cooling process to whole induction coil in whole heat treatment process, with this
Meanwhile, travelling gear constantly rotates on transport axle, and travelling gear internal part can be carried out by fixing end cap
Sealing lubrication protection, travelling gear drive chain is at bottom of device round and round, each on chain
Chain link end face top shelf hollow plate also with rotating constantly advance, is not affected transport by conveying rail heat conduction in guarantee
On the basis of so that whole conveying rail is steered a steady course under magneticaction, carries out the sensing of streamline rail head precision
Heat treatment.
Compared with prior art, present invention have the advantage that
1, utilize Fructus Persicae cardioid sensing heater that whole conveying rail head of rail position is carried out at streamline induction heat
Reason, and need precision heat treatment position at corresponding rail head, corresponding for induction coil position is constructed again
Add Fructus Persicae heart groove and magnetizer structure so that rail important force part degree of hardening and quench-hardened case reach country's mark
Quasi-value.
2, its whole transport establishment uses the chain of high temperature resistant character to implement pipelined process, and cooperation is led
To wheel and magnetic board effect, fully ensure that the stability of conveying rail induction heat treatment process.
Accompanying drawing explanation
Fig. 1 is the sectional view of the present invention；
Fig. 2 is the main structure view of the present invention.
Drawing reference numeral: 1-cooling water pipe, 2-Fructus Persicae heart groove, 3-rail head, 4-guiding trestle, 5-directive wheel, 6-main support,
7-adsorbs magnetic sheet, 8-transmission gear, 9-Roofing slab, 10-end plate, and 11-fixes end cap, and 12-transports axle, 13-
Adhere to magnetic sheet, the 14-axis of guide, 15-magnetic conductor, 16-induction coil, the 17-flange of rail, 18-chain, 19-
The web of the rail, 20-induction apparatus, 21-carries rail.
Detailed description of the invention is in the simplified schematic diagram of the present invention shown in Fig. 1 and Fig. 2, at conveying rail 21
The bottom at two ends is equipped with main support 6, and the cross section of main support is U-shaped.In two main support two sides
It is respectively fixedly connected with transport axle 12 between portion, is socketed a transmission gear 8 respectively at the middle part of each transport axle,
Each transmission gear be respectively provided on two sides with a fixing end cap 11, fixing end cap is that middle part is provided with the circle of through hole
Shape flat board, fixing end cap is each provided at transporting on axle.It is connected by chain 18 between two transmission gears.
The fixing connection end plate 10 in each chain link both sides of chain, end plate is square plate.At each chain link two
The end plate top of side, one Roofing slab 9 of fixing connection, Roofing slab is the channel steel type hollow plate of one end open,
The outer wall of each Roofing slab other end afterbody opening part is provided with square groove, studs with in each square groove
Absorption magnetic sheet 7.Between the homonymy on two main support tops, it is respectively fixedly connected with a guiding trestle 4,
The cross section of guiding trestle is half I shape, and the opening of two guiding trestles is relative.At each guiding trestle
Inside, the position adjacent with the opening of guiding trestle, it is respectively equipped with an axis of guide 14, in each guiding
A directive wheel 5 it is socketed respectively on axle.The outer face of two directive wheels connects with the web of the rail 19 friction of conveying rail
Touch.The flange of rail 17 at conveying rail is uniformly provided with adhesion magnetic sheet 13, adheres to the position of magnetic sheet and absorption magnetic sheet
Corresponding.Being provided with induction apparatus near end face and the two sides of conveying rail, induction apparatus 20 is by Fructus Persicae heart shaped shape
Induction coil 16 forms, and often group induction coil is symmetrical relative to the centrage of the rail head 3 of conveying rail.?
The inner face often organizing induction coil is all adjacent with cooling water pipe 1.Near end face and the two sides carrying rail
Induction coil on be respectively equipped with the Fructus Persicae heart groove 2 of indent, at the inside embedded rectangle magnetic conductor of each Fructus Persicae heart groove
15.Not closing connection between two ends of induction apparatus, an end of induction apparatus is connected with positive source,
The other end is connected with power cathode.
Claims (1)
1. be applied to heavy rail precision sensing heater and guide a transport establishment, mainly include cooling water pipe,
Fructus Persicae heart groove, rail head, guiding trestle, directive wheel, main support, absorption magnetic sheet, transmission gear, Roofing slab,
End plate, fixing end cap, transport axle, adhesion magnetic sheet, the axis of guide, magnetic conductor, induction coil, carrier chain
Bar, induction apparatus and conveying rail, it is characterised in that: it is equipped with main support in the bottom at conveying rail two ends,
The cross section of main support is U-shaped, is respectively fixedly connected with transport between the middle part of two main support two sides
Axle, is socketed a transmission gear respectively at the middle part of each transport axle, and the both sides of each transmission gear are respectively
Being provided with a fixing end cap, fixing end cap is the circular flat board that middle part is provided with through hole, and fixing end cap is each provided at
On transport axle, it is connected by chain between two transmission gears, at each chain link two of chain
Side is fixing connects end plate, and end plate is square plate, on the end plate top of each chain link both sides, and fixing connection
One Roofing slab, Roofing slab is the channel steel type hollow plate of one end open, opens at each Roofing slab other end afterbody
Outer wall at Kou is provided with square groove, studs with absorption magnetic sheet in each square groove, props up two masters
Between the homonymy on frame top, being respectively fixedly connected with a guiding trestle, the cross section of guiding trestle is half work
Font, and the opening of two guiding trestles is relative, inside each guiding trestle, with opening of guiding trestle
The position that mouth is adjacent, is respectively equipped with an axis of guide, is socketed a guiding on each axis of guide respectively
Wheel, the flange of rail at conveying rail is uniformly provided with adhesion magnetic sheet, adheres to magnetic sheet relative with the position of absorption magnetic sheet
Should, it being provided with induction apparatus near end face and the two sides of conveying rail, induction apparatus is by the line of induction of Fructus Persicae heart shaped shape
Circle composition, often group induction coil is symmetrical relative to the centrage of the rail head of conveying rail, is often organizing the line of induction
The inner face of circle is all adjacent with cooling water pipe, near end face and the induction coil of two sides carrying rail
On be respectively equipped with the Fructus Persicae heart groove of indent, at the inside embedded rectangle magnetic conductor of each Fructus Persicae heart groove, induction apparatus
Not closing connection between two ends, an end of induction apparatus is connected with positive source, the other end with
Power cathode is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194397.1A CN105838849A (en) | 2016-03-31 | 2016-03-31 | Precise induction heater applied to heavy rail and guide transportation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194397.1A CN105838849A (en) | 2016-03-31 | 2016-03-31 | Precise induction heater applied to heavy rail and guide transportation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105838849A true CN105838849A (en) | 2016-08-10 |
Family
ID=56596386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610194397.1A Pending CN105838849A (en) | 2016-03-31 | 2016-03-31 | Precise induction heater applied to heavy rail and guide transportation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105838849A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858128A (en) * | 2018-07-27 | 2018-11-23 | 深圳市施罗德工业测控设备有限公司 | A kind of robot track |
| CN110371606A (en) * | 2018-08-01 | 2019-10-25 | 北京京东尚科信息技术有限公司 | Driving mechanism and the rail set, sorting host and halved belt sorter for using it |
| CN110791626A (en) * | 2019-10-18 | 2020-02-14 | 燕山大学 | Squirrel-cage induction heating device and process for marine flat-bulb steel |
| CN111867173A (en) * | 2020-06-16 | 2020-10-30 | 燕山大学 | Electromagnetic induction heating device for space follow-up steel rail |
| CN113416833A (en) * | 2021-07-08 | 2021-09-21 | 包钢中铁轨道有限责任公司 | Steel rail weld heat treatment control system and heat treatment method |
| CN114891967A (en) * | 2022-06-20 | 2022-08-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for welding medium-low carbon pearlite steel rail |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575109Y (en) * | 2002-08-12 | 2003-09-24 | 郑体成 | Coal-saving device pipe for spraying composite coating with supersonic speed arc spraying equipment |
| CN1920062A (en) * | 2006-09-12 | 2007-02-28 | 攀枝花钢铁(集团)公司 | Rail heat processing method and rail heat processing unit |
| CN200988851Y (en) * | 2006-09-13 | 2007-12-12 | 攀枝花钢铁(集团)公司 | Rail thermal processing machine |
| CN102002573A (en) * | 2010-09-25 | 2011-04-06 | 朱兴发 | Production line for carrying out quenching and tempering heat treatment on steel rail off-line or on-line railhead tread |
| CN201809409U (en) * | 2010-09-25 | 2011-04-27 | 朱兴发 | Heat treatment production line for quenching and tempering rail head tread in steel rail offline or online manner |
| CN103131826A (en) * | 2013-02-26 | 2013-06-05 | 内蒙古包钢钢联股份有限公司 | Steel rail on-line wind-jet quenching heat treatment simulation experiment device |
-
2016
- 2016-03-31 CN CN201610194397.1A patent/CN105838849A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575109Y (en) * | 2002-08-12 | 2003-09-24 | 郑体成 | Coal-saving device pipe for spraying composite coating with supersonic speed arc spraying equipment |
| CN1920062A (en) * | 2006-09-12 | 2007-02-28 | 攀枝花钢铁(集团)公司 | Rail heat processing method and rail heat processing unit |
| EP1900830A1 (en) * | 2006-09-12 | 2008-03-19 | Panzhihua Iron and Steel (Group) Corporation | Method and apparatus for heat treatment of steel rail |
| CN200988851Y (en) * | 2006-09-13 | 2007-12-12 | 攀枝花钢铁(集团)公司 | Rail thermal processing machine |
| CN102002573A (en) * | 2010-09-25 | 2011-04-06 | 朱兴发 | Production line for carrying out quenching and tempering heat treatment on steel rail off-line or on-line railhead tread |
| CN201809409U (en) * | 2010-09-25 | 2011-04-27 | 朱兴发 | Heat treatment production line for quenching and tempering rail head tread in steel rail offline or online manner |
| CN103131826A (en) * | 2013-02-26 | 2013-06-05 | 内蒙古包钢钢联股份有限公司 | Steel rail on-line wind-jet quenching heat treatment simulation experiment device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858128A (en) * | 2018-07-27 | 2018-11-23 | 深圳市施罗德工业测控设备有限公司 | A kind of robot track |
| CN110371606A (en) * | 2018-08-01 | 2019-10-25 | 北京京东尚科信息技术有限公司 | Driving mechanism and the rail set, sorting host and halved belt sorter for using it |
| CN110371606B (en) * | 2018-08-01 | 2021-09-03 | 北京京东乾石科技有限公司 | Driving mechanism, track device adopting driving mechanism, sorting host and cross belt sorting machine |
| CN110791626A (en) * | 2019-10-18 | 2020-02-14 | 燕山大学 | Squirrel-cage induction heating device and process for marine flat-bulb steel |
| CN111867173A (en) * | 2020-06-16 | 2020-10-30 | 燕山大学 | Electromagnetic induction heating device for space follow-up steel rail |
| CN113416833A (en) * | 2021-07-08 | 2021-09-21 | 包钢中铁轨道有限责任公司 | Steel rail weld heat treatment control system and heat treatment method |
| CN113416833B (en) * | 2021-07-08 | 2022-06-10 | 包钢中铁轨道有限责任公司 | Steel rail weld heat treatment control system and heat treatment method |
| CN114891967A (en) * | 2022-06-20 | 2022-08-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for welding medium-low carbon pearlite steel rail |
| CN114891967B (en) * | 2022-06-20 | 2023-10-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Welding method for medium-low carbon pearlite steel rail |
| WO2023246359A1 (en) * | 2022-06-20 | 2023-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Medium- and low-carbon pearlite steel rail welding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105838849A (en) | Precise induction heater applied to heavy rail and guide transportation mechanism | |
| US4363946A (en) | Inductor for inductively heating raceways of antifriction bearing rings | |
| CN103898303B (en) | The heat treatment method of a kind of turnout rail and turnout rail | |
| CN102796965A (en) | Rolling mill support roll steel and heat treatment technology thereof | |
| CN106424280A (en) | Flexible control method of thermoforming differential mechanical property distribution of high-strength steel | |
| CN109082504A (en) | A kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching | |
| CN112609051A (en) | Hollow stepped shaft double-journal and transition fillet simultaneous quenching inductor and quenching method | |
| CN103740912A (en) | Processing method for improving temper embrittlement resistance of steel plate for pressure vessels | |
| CN109926531B (en) | Pipe end upsetting method for titanium alloy drill pipe | |
| CN107815684B (en) | A kind of rail electric arc cladding alloy approach | |
| CN110480139A (en) | The technique of lower control limit Mn content R350HT rail flash welding joint microstructure | |
| CN205974608U (en) | Efficient camshaft induction heater | |
| KR20150132939A (en) | Heat treatment facility system | |
| CN108504826A (en) | A kind of low temperature complete austenitizing normalizing process of magnesium iron traveling wheel | |
| CN105033042B (en) | A kind of production technology of winch support | |
| CN205443394U (en) | Cell type guardrail induction heating heat treatment device | |
| CN205874501U (en) | Excavator thrust wheel support roll way induction heating of portion frock | |
| CN211734407U (en) | Heating device for steel wire heat treatment process | |
| CN109777928B (en) | Locally-reinforced channel beam and manufacturing process thereof | |
| CN209722213U (en) | A kind of guiding wheel shaft quenching sensing device | |
| CN206069944U (en) | The transmission track that a kind of steel tube for refrigeration online annealing is used | |
| CN205217966U (en) | Crystallization wheel assembly structure | |
| CN205803539U (en) | A kind of super-huge thrust wheel of digging machine supports groove portion chilling frock | |
| CN216655786U (en) | Improved chromium alloy large channel steel finished product roller | |
| CN2258876Y (en) | Medium frequency induction continuous heating furnace for step shafts |
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: 20160810 |