CN109821926A - A kind of expander and method of major diameter copper alloy tube - Google Patents
A kind of expander and method of major diameter copper alloy tube Download PDFInfo
- Publication number
- CN109821926A CN109821926A CN201910244890.3A CN201910244890A CN109821926A CN 109821926 A CN109821926 A CN 109821926A CN 201910244890 A CN201910244890 A CN 201910244890A CN 109821926 A CN109821926 A CN 109821926A
- Authority
- CN
- China
- Prior art keywords
- copper alloy
- alloy tube
- core print
- expanding
- expander
- 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
Abstract
The invention belongs to metal material processing technology of preparing field more particularly to a kind of expanders and method of major diameter copper alloy tube.The device includes that the expander includes expanding core print, core print mandril, the hydraulic delivery device of copper alloy tube, heating device, ring type cooling device and temperature control system.The diameter enlarging method of the expander is moved using local fast heating, in conjunction with hydraulic push mechanism urges pipe to expander core print direction uniform motion using to copper alloy tube, because of the presence of pipe inner conical expander die, copper pipe inner wall generates compression radially from inside to outside, it is carried out with certain expanding speed and expanding comparison pipe expanding to get arriving major diameter copper alloy tube.The invention has the advantages that having many advantages, such as that single pass heavy deformation is big, high production efficiency, process flow is short, lumber recovery is high, at low cost the method achieve the efficient expanding of major diameter copper alloy tube.
Description
Technical field:
The invention belongs to metal material processing technology of preparing field, it is related to expander and the side of a kind of major diameter copper alloy tube
Method.
Background technique:
Currently, domestic major diameter copper alloy tube mainly uses " the solid ingot casting of the D.C.casting-perforation extruding-expanding drawing of pickling-
Pull out-intermediate annealing-undergauge drawing-annealing " technique (referred to as " squeezed drawing " technique) [see: Wang Hua magnitude, a kind of major diameter
The process for making of White Copper Tubes, Chinese invention patent, grant number ZL200710054272 .X；Chen Qin, Liu Guanglong, Li Juan, greatly
The product development of bore White Copper Tubes and technical study, Shanghai non-ferrous metal, 2013, Vol. 34, No. 2, p. 55~58] it is given birth to
It produces.However, that there are single pass heavy deformations is small for expanding drawing process, processing passage is more, also needs intermediate annealing, and process flow is long etc. asks
Topic, it is especially huge in the copper alloy tube difficulty of production diameter phi 300mm or more.
Summary of the invention:
The purpose of the present invention is for major diameter copper alloy tube expander technique long flow path, lumber recovery is low, at high cost the problems such as, propose
It is a kind of to meet the thermal expansion device and method that major diameter copper alloy tube is efficient, big deformation quantity is expanding.
To achieve the above object, technical scheme is as follows: a kind of expander of major diameter copper alloy tube, the expansion
Diameter device includes expanding core print, core print mandril, the hydraulic delivery device of copper alloy tube, heating device, ring type cooling device and temperature
Control system；
Wherein, the hydraulic delivery device of the copper alloy tube, for pushing copper alloy tube after heating to move to expanding core print；
The ring type cooling device is cooled down for the non-heated region to copper alloy tube, reduces temperature, guarantees copper alloy
The intensity of pipe；
The heating device is quickly heated for treating expansion copper alloy tube, to realize the expanding operation of copper alloy tube；
The expanding core print, it is expanding for being carried out to copper alloy tube after heating,
The core print mandril, for installing and fixing the expanding core print；
The temperature control system guarantees copper alloy tube temperature for the accurate control of the temperature to heating zone and cooling section
The stabilization of field.
According to the embodiment of the present disclosure, the structure of the expander are as follows:
The expanding core print is horizontally set on the end of core print mandril one end, and the other end of the core print mandril is fixed on
Determine on frame；
The other end of the expanding core print is arranged in the hydraulic delivery device of copper alloy tube, and the expanding core print and the copper close
Gold, which is managed, is equipped with cold section and heating zone between hydraulic delivery device, the cold section is positioned close to the copper alloy tube hydraulic thrust
Mechanism side is sent, the heating zone is positioned close to one end of the expanding core print, and the heating device is arranged in the heating
In area, the ring type cooling device is arranged in the cooling section, the temperature control system respectively with the heating device and
Ring type cooling device control connection.
According to the embodiment of the present disclosure, the expanding core print is from left to right followed successively by entrance, taper extension diameter section and sizing section,
Described sizing section one end and the core print mandril are affixed, the other end of the sizing section by the taper extension diameter section with it is described enter
One end of mouth section is affixed.
According to the embodiment of the present disclosure, the diameter of the entrance is less than the diameter of the sizing section；The taper extension diameter section
Unilateral taper be 5~20 °.
According to the embodiment of the present disclosure, the heating device is medium/high frequency heating coil.
Another object of the present invention provide it is a kind of major diameter copper alloy tube diameter enlarging method is prepared using above-mentioned expander,
This method specifically includes the following steps:
Firstly, copper alloy tube is mounted on the hydraulic delivery device of copper alloy tube, expanding core print is fixed, it is spare；
Secondly, starting heating device by temperature control system, while starting the hydraulic push mechanism urges copper alloy of copper alloy tube
Pipe is moved to expander core print direction, is opened when the end of copper alloy tube enters heating zone and is heated by temperature control system
Dynamic ring type cooling device cools down the non-heated region of copper alloy tube, and hydraulic delivery device continues to press on pipe to expander
The movement of core print direction, enters expanding core print inside copper alloy tube, makes copper alloy tube inner wall by the cone of expanding core print
The extruding of the expanding mode of shape makes copper alloy tube inner wall generate compression radially from inside to outside, make copper alloy tube according to
Preset ratio carries out expanding；
Finally, obtaining major diameter copper alloy tube.
According to the embodiment of the present disclosure, the outer diameter for obtaining major diameter copper alloy tube be 100~480mm of φ, wall thickness 5~
30mm。
According to the embodiment of the present disclosure, the temperature of the heating is 200~800 DEG C.
According to the embodiment of the present disclosure, the fltting speed of the hydraulic delivery device is 30~300mm/min, the expanding ratio
It is 1.1~1.4.
According to the embodiment of the present disclosure, a kind of major diameter copper alloy tube, the major diameter copper alloy tube is using above-mentioned expanding
Device is prepared.
The beneficial effects of the present invention are: due to the adoption of the above technical scheme, the present invention uses local heating, synchronizes expander
Method realizes the efficient expanding of major diameter copper alloy tube, and quickly can carry out expanding, enlarged-diameter ratio to White Copper Tubes
Height, high production efficiency are especially suitable for production super-large diameter (> φ 300mm) copper alloy tube.
Detailed description of the invention:
Fig. 1 is a kind of structural schematic diagram of the expander of major diameter copper alloy tube of the present invention.
In figure:
1. the hydraulic delivery device of copper alloy tube, 2. expanding copper-nickel alloy pipes, 3. expanding core prints, 4. ring type cooling devices, 5. heating dresses
It sets, 6. core print mandrils, 7. core print entrances, 8. core print extension diameter sections, 9. core print sizing sections.
Specific embodiment
Technical scheme is described further in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of expander of major diameter copper alloy tube of the present invention, the expander include expanding core print,
The hydraulic delivery device of core print mandril, copper alloy tube, heating device, ring type cooling device and temperature control system；
Wherein, the hydraulic delivery device of the copper alloy tube, for pushing copper alloy tube after heating to move to expanding core print；
The ring type cooling device is cooled down for the non-heated region to copper alloy tube, reduces temperature, guarantees copper alloy
The intensity of pipe；
The heating device is quickly heated for treating expansion copper alloy tube, to realize the expanding operation of copper alloy tube；
The heating device is heating coil；
The expanding core print, it is expanding for being carried out to copper alloy tube after heating,
The core print mandril, for installing and fixing the expanding core print；
The temperature control system guarantees copper alloy tube temperature for the accurate control of the temperature to heating zone and cooling section
The stabilization of field.
According to the embodiment of the present disclosure, the structure of the expander are as follows:
The expanding core print is horizontally set on the end of core print mandril one end, and the other end of the core print mandril is fixed on
Determine on frame；
The other end of the expanding core print is arranged in the hydraulic delivery device of copper alloy tube, and the expanding core print and the copper close
Gold, which is managed, is equipped with cold section and heating zone between hydraulic delivery device, the cold section is positioned close to the copper alloy tube hydraulic thrust
Mechanism side is sent, the heating zone is positioned close to one end of the expanding core print, and the heating device is arranged in the heating
In area, the ring type cooling device is arranged in the cooling section, the temperature control system respectively with the heating device and
Ring type cooling device control connection.
According to the embodiment of the present disclosure, the expanding core print is from left to right followed successively by entrance, taper extension diameter section and sizing section,
Described sizing section one end and the core print mandril are affixed, the other end of the sizing section by the taper extension diameter section with it is described enter
One end of mouth section is affixed.
According to the embodiment of the present disclosure, the diameter of the entrance is less than the diameter of the sizing section；The taper extension diameter section
Unilateral taper be 5~20 °.
According to the embodiment of the present disclosure, the heating device is medium/high frequency heating coil.
A kind of to prepare major diameter copper alloy tube diameter enlarging method using above-mentioned expander, this method specifically includes following step
It is rapid:
Firstly, copper alloy tube is mounted on the hydraulic delivery device of copper alloy tube, expanding core print is fixed, it is spare；
Secondly, starting heating device by temperature control system, while starting the hydraulic push mechanism urges copper alloy of copper alloy tube
Pipe is moved to expander core print direction, is opened when the end of copper alloy tube enters heating zone and is heated by temperature control system
Dynamic ring type cooling device cools down the non-heated region of copper alloy tube, and hydraulic delivery device continues to press on pipe to expander
The movement of core print direction, enters expanding core print inside copper alloy tube, makes copper alloy tube inner wall by the cone of expanding core print
The extruding of the expanding mode of shape makes copper alloy tube inner wall generate compression radially from inside to outside, make copper alloy tube according to
Preset ratio carries out expanding；
Finally, obtaining major diameter copper alloy tube.
According to the embodiment of the present disclosure, the outer diameter for obtaining major diameter copper alloy tube be 100~480mm of φ, wall thickness 5~
30mm。
According to the embodiment of the present disclosure, the temperature of the heating is 200~800 DEG C.
According to the embodiment of the present disclosure, the fltting speed of the hydraulic delivery device is 30~300mm/min, the expanding ratio
It is 1.1~1.4.
Embodiment 1:
Preparation is having a size of φ 480 × 11mm BFe10-1.4-1 copper-nickel alloy straight tube expanding technology method
Firstly, pipe: using the BFe10-1.4-1 copper-nickel alloy pipe of 360 × 15mm of φ；
It is placed on expanding roller-way secondly, copper-nickel alloy pipe will be obtained, is aligned copper-nickel alloy pipe front end and heating coil, makes expanding core
Head entrance enters in copper alloy tube, expanding core print entrance diameter phi 320mm, and extension diameter section frustoconical bevel angle is 10 °, and sizing section is straight
Diameter is φ 460mm；PID control temperature heating coil is opened, is heated to 550 DEG C of temperature, copper-nickel alloy pipe delivery device is opened, makes white
Copper pipe is moved to expanding core print direction, speed 200mm/min；
Finally, obtaining φ 480 × 11mm BFe10-1.4-1 White Copper Tubes.
Embodiment 2:
Preparation is having a size of φ 360 × 6mm BFe10-1.4-1 copper-nickel alloy straight tube
Firstly, pipe: using the BFe10-1.4-1 copper-nickel alloy pipe of 280 × 8mm of φ；
Secondly, the copper-nickel alloy pipe being prepared is placed on expanding roller-way, it is aligned copper-nickel alloy pipe front end and heating coil, is made
Expanding core print entrance enters in copper alloy tube, entrance diameter phi 250mm, and extension diameter section frustoconical bevel angle is 10 °, sizing section diameter
For φ 348mm；PID control temperature heating coil is opened, is heated to 550 DEG C of temperature, copper-nickel alloy pipe delivery device is opened, makes copper-nickel alloy
Pipe is moved to expanding core print direction, speed 200mm/min；
Complete the bore production of 360 × 6mm of φ BFe10-1.4-1 White Copper Tubes.
Embodiment 3:
Preparation is having a size of φ 280 × 5mmBFe30-1-1 copper-nickel alloy straight tube production method
Firstly, pipe: using the BFe10-1.4-1 copper-nickel alloy pipe of 240 × 12mm of φ；
It is placed on expanding roller-way secondly, copper-nickel alloy pipe will be obtained, is aligned copper-nickel alloy pipe front end and heating coil, makes bore core
Head entrance enters in copper alloy tube, and core print entrance diameter is φ 210mm, and extension diameter section frustoconical bevel angle is 6 °, sizing section diameter
For φ 270mm；PID control temperature heating coil is opened, is heated to 650 DEG C of temperature, copper-nickel alloy pipe delivery device is opened, makes copper-nickel alloy
Pipe is moved to expanding core print direction, speed 180mm/min, completes the expanding life of 280 × 5mm of φ BFe30-1-1 White Copper Tubes
It produces.
Advantages of the present invention has been shown and described above.It should be understood by those skilled in the art that the present invention is not by above-mentioned
The limitation of embodiment, the above embodiments and description only illustrate the principle of the present invention, is not departing from essence of the invention
Under the premise of mind and range, various changes and improvements may be made to the invention, these changes and improvements both fall within claimed
In invention scope.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (10)
1. a kind of expander of major diameter copper alloy tube, which is characterized in that the expander includes expanding core print, core print top
The hydraulic delivery device of bar, copper alloy tube, heating device, ring type cooling device and temperature control system；
Wherein, the hydraulic delivery device of the copper alloy tube, for pushing copper alloy tube after heating to move to expanding core print；
The ring type cooling device is cooled down for the non-heated region to copper alloy tube, reduces temperature, guarantees copper alloy
The intensity of pipe；
The heating device is quickly heated for treating expansion copper alloy tube, to realize the expanding operation of copper alloy tube；
The expanding core print, it is expanding for being carried out to copper alloy tube after heating,
The core print mandril, for installing and fixing the expanding core print；
The temperature control system guarantees copper alloy tube temperature for the accurate control of the temperature to heating zone and cooling section
The stabilization of field.
2. the expander of major diameter copper alloy tube according to claim 1, which is characterized in that the knot of the expander
Structure are as follows:
The expanding core print is horizontally set on the end of core print mandril one end, and the other end of the core print mandril is fixed on
Determine on frame；
The other end of the expanding core print is arranged in the hydraulic delivery device of copper alloy tube, and the expanding core print and the copper close
Gold, which is managed, is equipped with cold section and heating zone between hydraulic delivery device, the cold section is positioned close to the copper alloy tube hydraulic thrust
Mechanism side is sent, the heating zone is positioned close to one end of the expanding core print, and the heating device is arranged in the heating
In area, the ring type cooling device is arranged in the cooling section, the temperature control system respectively with the heating device and
Ring type cooling device control connection.
3. a kind of major diameter copper alloy tube expander according to claim 2, it is characterised in that: the expanding core print from
Left-to-right to be followed successively by entrance, taper extension diameter section and sizing section, described sizing section one end and the core print mandril are affixed, described fixed
The other end of diameter section is affixed by one end of the taper extension diameter section and the entrance.
4. a kind of major diameter copper alloy tube expander according to claim 3, it is characterised in that: the entrance it is straight
Diameter is less than the diameter of the sizing section；The unilateral taper of the taper extension diameter section is 5~20 °.
5. a kind of major diameter copper alloy tube expander according to claim 2, it is characterised in that: the heating device is
Medium/high frequency heating coil.
6. a kind of prepare major diameter copper alloy tube diameter enlarging method using expander described in claim 1-5 any one,
Be characterized in that, this method specifically includes the following steps:
Firstly, copper alloy tube is mounted on the hydraulic delivery device of copper alloy tube, expanding core print is fixed, it is spare；
Secondly, starting heating device by temperature control system, while starting the hydraulic push mechanism urges copper alloy of copper alloy tube
Pipe is moved to expanding core print direction, is opened when the end of copper alloy tube enters heating zone and is heated by temperature control system
Dynamic ring type cooling device cools down the non-heated region of copper alloy tube, and hydraulic delivery device continues to press on pipe to expanding
The movement of core print direction, enters expanding core print inside copper alloy tube, makes copper alloy tube inner wall by the cone of expanding core print
The extruding of the expanding mode of shape makes copper alloy tube inner wall generate compression radially from inside to outside, make copper alloy tube according to
Preset ratio carries out expanding；
Finally, obtaining major diameter copper alloy tube.
7. according to the method described in claim 6, it is characterized in that, the outer diameter for obtaining major diameter copper alloy tube is φ 100
~480mm, 5~30mm of wall thickness.
8. according to the method described in claim 6, it is characterized in that, the temperature of the heating is 200~800 DEG C.
9. according to the method described in claim 6, it is characterized in that, the fltting speed of the hydraulic delivery device be 30~
300mm/min, it is described expanding than being 1.1~1.4.
10. a kind of major diameter copper alloy tube, which is characterized in that the major diameter copper alloy tube is used as claim 1-4 is any
Expander described in is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244890.3A CN109821926A (en) | 2019-03-28 | 2019-03-28 | A kind of expander and method of major diameter copper alloy tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244890.3A CN109821926A (en) | 2019-03-28 | 2019-03-28 | A kind of expander and method of major diameter copper alloy tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109821926A true CN109821926A (en) | 2019-05-31 |
Family
ID=66873153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910244890.3A Pending CN109821926A (en) | 2019-03-28 | 2019-03-28 | A kind of expander and method of major diameter copper alloy tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109821926A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976674A (en) * | 2019-11-08 | 2020-04-10 | 安徽莱鑫精密特种钢管有限公司 | Alloy pipe production expanding equipment |
| CN112474873A (en) * | 2020-12-02 | 2021-03-12 | 江阴市丰厚管件有限公司 | Manufacturing method of seamless reducer pipe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586759A (en) * | 2004-08-24 | 2005-03-02 | 广东联塑科技实业有限公司 | Flaring method for solid wall pipeline |
| CN1657195A (en) * | 2004-02-20 | 2005-08-24 | 竭国忠 | Equipment and method for making non-ferrous metal seamlesi bend, bend pipe by thermal pushing |
| CN1947877A (en) * | 2006-11-03 | 2007-04-18 | 西北有色金属研究院 | Super thin wall type titanium tube mfg. method |
| CN1954933A (en) * | 2005-10-26 | 2007-05-02 | 竭国忠 | Equipment and method for manufacturing metal large diameter equal wall thickness slit elbow and expanding tube by thermal push |
| CN101468364A (en) * | 2007-12-29 | 2009-07-01 | 付朋 | Thermal expansion machine for producing stainless steel tube |
| CN202461331U (en) * | 2012-03-14 | 2012-10-03 | 天津腾飞钢管有限公司 | Core bar for hot expanding steel pipe |
| CN107052175A (en) * | 2017-04-28 | 2017-08-18 | 西北有色金属研究院 | A kind of titanium or titanium alloy picks expansion-molding core processed |
| CN108698110A (en) * | 2016-03-14 | 2018-10-23 | 川崎重工业株式会社 | The diameter enlarging method and building mortion of pipe |
-
2019
- 2019-03-28 CN CN201910244890.3A patent/CN109821926A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657195A (en) * | 2004-02-20 | 2005-08-24 | 竭国忠 | Equipment and method for making non-ferrous metal seamlesi bend, bend pipe by thermal pushing |
| CN1586759A (en) * | 2004-08-24 | 2005-03-02 | 广东联塑科技实业有限公司 | Flaring method for solid wall pipeline |
| CN1954933A (en) * | 2005-10-26 | 2007-05-02 | 竭国忠 | Equipment and method for manufacturing metal large diameter equal wall thickness slit elbow and expanding tube by thermal push |
| CN1947877A (en) * | 2006-11-03 | 2007-04-18 | 西北有色金属研究院 | Super thin wall type titanium tube mfg. method |
| CN101468364A (en) * | 2007-12-29 | 2009-07-01 | 付朋 | Thermal expansion machine for producing stainless steel tube |
| CN202461331U (en) * | 2012-03-14 | 2012-10-03 | 天津腾飞钢管有限公司 | Core bar for hot expanding steel pipe |
| CN108698110A (en) * | 2016-03-14 | 2018-10-23 | 川崎重工业株式会社 | The diameter enlarging method and building mortion of pipe |
| CN107052175A (en) * | 2017-04-28 | 2017-08-18 | 西北有色金属研究院 | A kind of titanium or titanium alloy picks expansion-molding core processed |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976674A (en) * | 2019-11-08 | 2020-04-10 | 安徽莱鑫精密特种钢管有限公司 | Alloy pipe production expanding equipment |
| CN112474873A (en) * | 2020-12-02 | 2021-03-12 | 江阴市丰厚管件有限公司 | Manufacturing method of seamless reducer pipe |
| CN112474873B (en) * | 2020-12-02 | 2022-03-01 | 江阴市丰厚管件有限公司 | Manufacturing method of seamless reducer pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109821926A (en) | A kind of expander and method of major diameter copper alloy tube | |
| CN202246742U (en) | Induction coil used for quenching splined shaft | |
| CN105312353B (en) | A kind of large diameter thin wall copper-nickel alloy tubing short-flow production method | |
| CN101537435B (en) | Dieless drawing forming process for conical metal pipe | |
| CN110369548A (en) | A kind of titanium alloy is seamless square and rectangular pipe and its manufacturing method and application | |
| Debin et al. | Experimental study on process of cold-power spinning of Ti–15–3 alloy | |
| CN102989820A (en) | Manufacturing method for titanium welded pipe | |
| CN206229845U (en) | A kind of bimodulus draw-off gear for air-conditioning coil pipe | |
| CN104827006B (en) | Horizontal continuous-casting continuous-extruding equipment for large-diameter forging copper pipe and production technology of copper pipe | |
| CN101412047A (en) | Technique for producing copper-clad aluminium composite tube or stick | |
| CN109894590A (en) | A kind of continuous casting installation for casting and method of major diameter copper alloy tube | |
| CN103551384B (en) | The preparation method of a kind of copper zinc complex plate strip | |
| CN206689226U (en) | A kind of U-tube chipless forming integrated machine | |
| CN109821927B (en) | Production method of large-diameter white copper pipe | |
| CN102303048A (en) | Continuous piercing method for seamless steel tube | |
| CN105057478B (en) | The method producing Varying-thickness variable diameters steel pipe | |
| CN107052175A (en) | A kind of titanium or titanium alloy picks expansion-molding core processed | |
| CN109746279A (en) | A kind of aluminium alloy pipe casting extrusion-rolling combined shaping method | |
| CN105382162B (en) | The jumping-up pulling method of the prefabricated annular blank of hollow steel ingot | |
| CN104439011A (en) | Convex die for forming thickened end of petroleum drill stem and application of forming convex die | |
| CN110340165B (en) | Device for preparing metal composite pipe by pulse current auxiliary drawing and processing method thereof | |
| CN103230961B (en) | The manufacture method of copper alloy tube and copper alloy tube | |
| CN203936123U (en) | A kind of poling expanding top of rolling seamless steel pipe | |
| CN101927260A (en) | Seamless steel pipe hot-rolling multiple perforation production process | |
| CN202984321U (en) | Magnesium alloy plate producing line prepared by adoption of fritting extruding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190531 |
|
| RJ01 | Rejection of invention patent application after publication |