CN113755834A - Process for laser cladding of nickel-based alloy powder in inner cavity of copper alloy die glass mold - Google Patents
Process for laser cladding of nickel-based alloy powder in inner cavity of copper alloy die glass mold Download PDFInfo
- Publication number
- CN113755834A CN113755834A CN202110745551.0A CN202110745551A CN113755834A CN 113755834 A CN113755834 A CN 113755834A CN 202110745551 A CN202110745551 A CN 202110745551A CN 113755834 A CN113755834 A CN 113755834A
- Authority
- CN
- China
- Prior art keywords
- nickel
- inner cavity
- based alloy
- alloy powder
- cladding
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
Abstract
The invention relates to a process for laser cladding of nickel-based alloy powder in an inner cavity of a copper alloy neck mold glass mold, which comprises the following steps: preprocessing a cavity, and turning and milling an inner cavity of a copper alloy neck mold according to requirements; and (3) performing previous treatment: cleaning oil stain and dust in the inner cavity; programming a track program according to the groove type of the inner cavity of the neck ring mold; laser cladding: the technological parameters are set, laser cladding is carried out along the program track, and the adopted nickel-based alloy powder comprises 1.0 percent of B, 0.13 percent of C, 3.3 percent of Cr, 1.9 percent of Fe, 2.55 percent of Si and the balance of Ni.
Description
Technical Field
The invention relates to the field of glass mold processing and manufacturing, in particular to a process for laser cladding of nickel-based alloy powder in an inner cavity of a glass mold of a copper alloy die.
Background
In the process of manufacturing glass products, the temperature of molten glass water is as high as over 1100 ℃, the glass mold is in long-term contact with high-temperature glass water and needs to have good high temperature resistance and oxidation resistance, and meanwhile, in the process of repeatedly opening and closing the mold, because of impact and extrusion, the positions of a joint line, an upper interface, a lower interface and the like of the mold are damaged and rough, and the quality of the glass products is influenced.
Because the size of the port die, particularly the copper alloy port die, is small, when the inner cavity of the copper alloy port die is subjected to full spray welding by a plasma surfacing means due to overlarge heat quantity, base metal and welding layer cracks and air holes are easy to appear, and the quality requirement cannot be met; at present, the inner cavity full spray welding is mainly carried out by adopting a manual flame spray welding process, but the manual spray welding process has low efficiency and large powder consumption, and simultaneously, the processes of preheating, heat preservation, annealing and the like are needed, so that the automatic production is greatly limited, and the high production cost is greatly caused.
Disclosure of Invention
Aiming at the problems of the surface strengthening means and method of the traditional copper alloy glass die (neck ring die), the invention provides a process for laser cladding of nickel-based alloy powder in the inner cavity of the copper alloy neck ring die glass die, which can improve the powder utilization rate, improve the product percent of pass and reduce the production cost.
A process for laser cladding of nickel-based alloy powder in an inner cavity of a copper alloy die glass mold comprises the following steps:
A) preprocessing a cavity: and (4) turning and milling the inner cavity of the mouth die, wherein the inner cavity is of a semi-cylindrical shape.
B) Laser cladding pretreatment: and cleaning dust and oil stains in the inner cavity of the neck mold.
C) And (4) according to the process requirements, writing a cladding track program through robot teaching.
D) And (3) laser cladding, selecting proper nickel-based alloy powder, controlling a laser cladding process, and cladding the nickel-based alloy powder into the inner cavity of the neck mold by using laser to obtain a cladded glass mold primary mold.
The invention is further improved in that: the die cavity is preprocessed in the step A), the shape of the die cavity processed by turning and milling is cylindrical, and right angles and burrs are not suitable to exist on the edge of the die cavity which is chamfered.
The invention is further improved in that: the laser adopted by laser cladding is a high-power blue laser, the central wavelength is 450-500nm, the lowest output power reaches 1500W, and the core diameter of the output optical fiber is 600 mu m.
The invention is further improved in that: the motion trail in the step C is as follows: the first scanning is performed along the cylindrical direction from the middle of the semi-cylindrical shape of the inner cavity of the neck mold; the second and third scanning are respectively carried out from two sides of the first scanning, and the scanning is carried out in turn until the inner cavity is completely covered, so that the temperature distribution at two sides can be ensured to be consistent, and the risk of cracking is reduced; the offset of each track is 1.0-1.5 mm.
The invention is further improved in that: the laser cladding process parameters adopted in the step C are that the focal spots are as follows: phi is 1.6-2.0mm, the working distance of a powder feeding nozzle of the cladding head is 18mm, the laser power is 800-: 20-25g/min, and the adopted protective gas is as follows: argon, flow: 8-12L/min; the scanning linear velocity is 15-25mm/s, and the monolayer thickness reaches 1.2-1.8 mm.
The invention is further improved in that: according to the requirements of different products on the thickness of the cladding layer, multilayer cladding is carried out on the basis of a single layer, the maximum thickness reaches 4.2mm, the laser power of 50-100W is reduced when cladding is carried out on a second layer and a third layer, and cracks caused by overhigh heat input due to overhigh heat accumulation power are avoided.
The invention is further improved in that: the nickel-based alloy powder adopted in the step D comprises 1.0% of B, 0.13% of C, 3.3% of Cr, 1.9% of Fe, 2.55% of Si and the balance of Ni, the hardness of the cladding layer reaches 26-28HRC, the performance requirements of high temperature resistance, wear resistance and oxidation resistance are met, the laser cladding process accurately controls the size of the cladding layer, the quality consistency and the yield of products are ensured, the traditional processes of preheating before cladding, heat preservation after cladding and annealing are omitted, and manual flame spray welding is replaced.
The invention has the beneficial effects that:
the problem that cracks and air holes are easily generated when the infrared semiconductor laser is adopted to reinforce the nickel-based alloy powder in the large-area inner cavity of the copper alloy port die is solved, the problems that the traditional manual spray welding is low in efficiency, large in powder consumption, low in qualified rate and needs rework and repair welding are solved, the processes of preheating, heat preservation, annealing and the like of manual spray welding are omitted, the powder consumption is greatly reduced, the production efficiency is remarkably improved, the product quality qualified rate is obviously improved, and the production cost is greatly reduced.
Drawings
FIG. 1 is a diagram of the pre-processing and forming of the inner cavity of the copper alloy die of the present invention.
FIG. 2 is a schematic diagram of the cladding track of the inner cavity of the copper alloy die of the present invention.
FIG. 3 is a diagram of a copper alloy die of the present invention after laser cladding.
FIG. 4 is a diagram of a finished product machined after laser cladding of the copper alloy die of the present invention.
Detailed Description
The specific implementation mode of the process for cladding the nickel-based alloy powder in the inner cavity of the copper alloy neck ring mold glass mold comprises the following steps of:
A) preprocessing a cavity: and (4) turning and milling the inner cavity of the mouth die, wherein the inner cavity is of a semi-cylindrical shape.
B) And laser cladding pretreatment: and cleaning dust and oil stains in the inner cavity of the neck mold.
C) And according to the process requirements, writing a cladding track program through robot teaching.
D) And laser cladding, selecting proper nickel-based alloy powder, controlling a laser cladding process, and cladding the nickel-based alloy powder into the inner cavity of the neck mold by using laser to obtain a cladded glass mold forming primary mold.
The laser cladding system is configured as follows: adopt 2kW blue light semiconductor laser as the light source, center wavelength: 455nm, the diameter of an optical fiber core of the laser cladding device is 600 mu m, the specification of a laser lens is 105mm, the laser lens is 300mm in focus, the size of a focal spot is phi 1.7mm, a six-axis robot is used as a laser cladding movement system, a scraper type air powder carrying machine is used as a powder feeding mechanism, and three paths of coaxial powder feeding cladding heads are used as laser heads.
The die cavity is preprocessed in the step A), the shape of the die cavity processed by turning and milling is cylindrical, and residues and burrs are not prone to exist inside the die cavity. The machine-shaping diagram is shown in fig. 1.
The cladding track in the step C) is that firstly, single-channel scanning is carried out along the cylindrical direction from the middle of a semi-cylindrical shape of an inner cavity of the neck mold; the second and third passes are scanned from two sides of the first pass respectively, and the scanning is performed in sequence and alternately until the inner cavity is completely covered, so that the temperature distribution at two sides can be ensured to be consistent, and the risk of cracking is reduced; the offset per lane is 1.5 mm. A schematic diagram of which is shown in fig. 2.
The laser cladding process parameters adopted in the step D) are that the focal spots are as follows: phi is 1.7mm, the working distance of a powder feeding nozzle of the cladding head is 18mm, the laser power is 900W, and the powder feeding amount is as follows: 22g/min, and the adopted protective gas is as follows: argon, flow: 10L/min; the linear scanning speed was 20 mm/s. The thickness of the single layer reaches 1.4 mm.
Completing the first layer by the parameters, reducing the laser power by 50W, increasing the working distance by 1.3mm, keeping other parameters unchanged, and repeating the steps C) and D) to perform second layer cladding; after the second layer is finished, the laser power is the same as that of the second layer, the working distance is increased by 1.3mm, other parameters are unchanged, and the third layer of laser cladding is carried out to obtain a final cladding finished product, as shown in fig. 3.
The nickel-based alloy powder adopted in the step D comprises 1.0% of B, 0.13% of C, 3.3% of Cr, 1.9% of Fe, 2.55% of Si and the balance of Ni, the hardness of the cladding layer reaches 26-28HRC, the performance requirements of high temperature resistance, wear resistance and oxidation resistance are met, the laser cladding process accurately controls the size of the cladding layer, the quality consistency and the yield of products are ensured, the traditional processes of preheating before cladding, heat preservation after cladding and annealing are omitted, and manual flame spray welding is replaced.
The invention has the beneficial effects that:
the process for laser cladding of the nickel-based alloy powder in the inner cavity of the copper alloy neck mold glass mold adopts a high-power blue laser as a light source, the center wavelength of the blue laser is 450-500nm, nonferrous metal has high absorption rate to the blue laser, the absorption rate of copper alloy to blue light is 7-20 times higher than that of infrared light, and the energy consumption required by the blue laser on copper welding is 84% lower than that of an infrared laser, which means that when the infrared laser needs 10kW of laser power to weld copper or gold materials, the blue laser only needs about 1 kW or 0.5 kW of power, except that the nonferrous metal has high absorption rate to the blue light, the typical facula energy distribution of the semiconductor laser also enables the copper to be more stably melted, and the quality of processed products is improved.
The invention overcomes the defects that the surface of the copper alloy is highly reflective, the heat conduction of the copper alloy material is fast, high-power laser input is required, and cracks and air holes are easily caused, can be applied to the strengthening application of the nickel-based alloy with large area and large thickness in the inner cavity of the copper alloy die, saves the powder consumption by 40 percent compared with manual spray welding, and improves the production efficiency by about 350 percent. The size of the cladding layer can be accurately controlled, automatic production can be realized, the consistency and the stability of the product quality are ensured, the production quality is reliable, the yield is improved by 60 percent, and the production cost is greatly saved.
Claims (7)
1. A process for laser cladding of nickel-based alloy powder in an inner cavity of a copper alloy die glass mold is characterized by comprising the following steps of: the method comprises the following steps:
A) preprocessing a cavity: turning and milling the inner cavity of the mouth mold, wherein the shape of the inner cavity is a semi-cylindrical shape;
B) laser cladding pretreatment: cleaning dust and oil stains in the inner cavity of the neck mold;
C) according to the process requirements: a cladding track program is compiled through robot teaching;
D) laser cladding: selecting proper nickel-based alloy powder, controlling a laser cladding process, and cladding the nickel-based alloy powder into the inner cavity of the neck mold by laser to obtain a cladded glass mold primary mold.
2. The process for laser cladding of the nickel-based alloy powder in the inner cavity of the copper alloy die glass mold according to claim 1, wherein the nickel-based alloy powder comprises the following steps: the pre-processing of the cavity in the step A), wherein the shape of the turn-milling processing is cylindrical.
3. The process for laser cladding of the nickel-based alloy powder in the inner cavity of the copper alloy die glass mold according to claim 1, wherein the nickel-based alloy powder comprises the following steps: the laser adopted by laser cladding is a high-power blue laser, the central wavelength is 450-500nm, the lowest output power reaches 1500W, and the core diameter of the output optical fiber is 600 mu m.
4. The process for laser cladding of the nickel-based alloy powder in the inner cavity of the copper alloy die glass mold according to claim 1, wherein the nickel-based alloy powder comprises the following steps: the motion trail in the step C) is as follows: the first scanning is performed along the cylindrical direction from the middle of the semi-cylindrical shape of the inner cavity of the neck mold; and scanning the second path and the third path from two sides of the first path respectively, and sequentially and alternately performing the scanning until the inner cavity is completely covered, wherein the offset of each path is 1.0-1.5 mm.
5. The process for laser cladding of the nickel-based alloy powder in the inner cavity of the copper alloy die glass mold according to claim 1, wherein the nickel-based alloy powder comprises the following steps: the laser cladding process parameters of the step C are that the focal spot is as follows: phi is 1.6-2.0mm, the working distance of a powder feeding nozzle of the cladding head is 18mm, the laser power is 800-: 20-25g/min, and the adopted protective gas is as follows: argon, flow: 8-12L/min, the scanning linear velocity is 15-25mm/s, and the single-layer thickness reaches 1.2-1.8 mm.
6. The process for laser cladding of the nickel-based alloy powder in the inner cavity of the copper alloy die glass mold according to claim 5, wherein the nickel-based alloy powder comprises the following steps: on the basis of a single layer, according to the requirement of thickness, carrying out multilayer cladding to ensure that the maximum thickness reaches 4.2mm, and reducing the laser power of 50-100W when carrying out cladding on a second layer and a third layer.
7. The process for laser cladding of the nickel-based alloy powder in the inner cavity of the copper alloy die glass mold according to claim 1, wherein the nickel-based alloy powder comprises the following steps: the nickel-based alloy powder adopted in the step D) comprises 1.0 percent of B, 0.13 percent of C, 3.3 percent of Cr, 1.9 percent of Fe, 2.55 percent of Si and the balance of Ni, and the hardness of the cladding layer reaches 26-28 HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110745551.0A CN113755834A (en) | 2021-07-01 | 2021-07-01 | Process for laser cladding of nickel-based alloy powder in inner cavity of copper alloy die glass mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110745551.0A CN113755834A (en) | 2021-07-01 | 2021-07-01 | Process for laser cladding of nickel-based alloy powder in inner cavity of copper alloy die glass mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113755834A true CN113755834A (en) | 2021-12-07 |
Family
ID=78787547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110745551.0A Pending CN113755834A (en) | 2021-07-01 | 2021-07-01 | Process for laser cladding of nickel-based alloy powder in inner cavity of copper alloy die glass mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113755834A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752934A (en) * | 2022-04-12 | 2022-07-15 | 北京工业大学 | Double-beam wire feeding type laser cladding method for copper surface |
| CN115772668A (en) * | 2022-12-09 | 2023-03-10 | 江苏智远激光装备科技有限公司 | Wind power sliding shaft laser cladding process |
| CN116397226A (en) * | 2023-03-31 | 2023-07-07 | 中国长江电力股份有限公司 | Device and process for preparing silver layer on copper substrate through blue laser cladding |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08259244A (en) * | 1995-03-28 | 1996-10-08 | Nippon Steel Corp | Glass forming mold |
| CN102806408A (en) * | 2012-09-05 | 2012-12-05 | 常熟市精工模具制造有限公司 | Full spray welding method for boundary of inner cavity of copper alloy glass mould |
| CN103334104A (en) * | 2013-07-10 | 2013-10-02 | 中国科学院半导体研究所 | Laser cladding method for obtaining low-dilution-rate coat |
| US20140001161A1 (en) * | 2011-06-30 | 2014-01-02 | Etablissements Chpolansky | Method of hardfacing a part |
| US20170232518A1 (en) * | 2014-08-11 | 2017-08-17 | Soochow University | Synchronous powder-feeding space laser machining and three-dimensional forming method and device |
| US20180375296A1 (en) * | 2017-06-13 | 2018-12-27 | Nuburu, Inc. | Very Dense Wavelength Beam Combined Laser System |
| CN110699687A (en) * | 2019-11-18 | 2020-01-17 | 成都青石激光科技有限公司 | Method for strengthening high-nickel copper alloy glass mold |
| CN111694160A (en) * | 2019-03-13 | 2020-09-22 | 深圳市联赢激光股份有限公司 | Laser light source device |
| CN112615248A (en) * | 2020-12-23 | 2021-04-06 | 扬州扬芯激光技术有限公司 | Blue laser |
| CN212955347U (en) * | 2020-04-29 | 2021-04-13 | 河北荣泰模具科技股份有限公司 | Glass mold laser cladding device |
| CN113026014A (en) * | 2021-03-09 | 2021-06-25 | 南京辉锐光电科技有限公司 | Glass mold and manufacturing method thereof |
-
2021
- 2021-07-01 CN CN202110745551.0A patent/CN113755834A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08259244A (en) * | 1995-03-28 | 1996-10-08 | Nippon Steel Corp | Glass forming mold |
| US20140001161A1 (en) * | 2011-06-30 | 2014-01-02 | Etablissements Chpolansky | Method of hardfacing a part |
| CN102806408A (en) * | 2012-09-05 | 2012-12-05 | 常熟市精工模具制造有限公司 | Full spray welding method for boundary of inner cavity of copper alloy glass mould |
| CN103334104A (en) * | 2013-07-10 | 2013-10-02 | 中国科学院半导体研究所 | Laser cladding method for obtaining low-dilution-rate coat |
| US20170232518A1 (en) * | 2014-08-11 | 2017-08-17 | Soochow University | Synchronous powder-feeding space laser machining and three-dimensional forming method and device |
| US20180375296A1 (en) * | 2017-06-13 | 2018-12-27 | Nuburu, Inc. | Very Dense Wavelength Beam Combined Laser System |
| CN111694160A (en) * | 2019-03-13 | 2020-09-22 | 深圳市联赢激光股份有限公司 | Laser light source device |
| CN110699687A (en) * | 2019-11-18 | 2020-01-17 | 成都青石激光科技有限公司 | Method for strengthening high-nickel copper alloy glass mold |
| CN212955347U (en) * | 2020-04-29 | 2021-04-13 | 河北荣泰模具科技股份有限公司 | Glass mold laser cladding device |
| CN112615248A (en) * | 2020-12-23 | 2021-04-06 | 扬州扬芯激光技术有限公司 | Blue laser |
| CN113026014A (en) * | 2021-03-09 | 2021-06-25 | 南京辉锐光电科技有限公司 | Glass mold and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752934A (en) * | 2022-04-12 | 2022-07-15 | 北京工业大学 | Double-beam wire feeding type laser cladding method for copper surface |
| CN115772668A (en) * | 2022-12-09 | 2023-03-10 | 江苏智远激光装备科技有限公司 | Wind power sliding shaft laser cladding process |
| CN116397226A (en) * | 2023-03-31 | 2023-07-07 | 中国长江电力股份有限公司 | Device and process for preparing silver layer on copper substrate through blue laser cladding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113755834A (en) | Process for laser cladding of nickel-based alloy powder in inner cavity of copper alloy die glass mold | |
| CN104400226B (en) | A kind of double-sided laser-TIG arc hybrid welding method | |
| CN110144583B (en) | Wide-beam and adjustable-powder-feeding-angle rapid and efficient semiconductor laser cladding device | |
| CN113832459B (en) | Process for cladding nickel-based tungsten carbide alloy powder on alloy steel punch glass die by laser | |
| CN107283061A (en) | A kind of laser c MT welding aluminum alloy increasing material manufacturing methods and formation system | |
| CN106498389B (en) | The laser cladding apparatus of the gentle cold light of preheating is generated based on multi-focus lens | |
| CN113026014B (en) | Glass mold and manufacturing method thereof | |
| CN105108340B (en) | Molten drop transition control method for pipeline all-position laser-MAG composite welding | |
| JP2009515709A (en) | Method and apparatus for laser use | |
| CN207026753U (en) | A kind of laser c MT welding aluminum alloys increasing material manufacturing formation system | |
| US20140001161A1 (en) | Method of hardfacing a part | |
| CN107999916A (en) | A kind of double light beam laser-TIG compound silk filling melt-brazing methods of dissimilar material | |
| CN107717189A (en) | A kind of three wire bond rifles and multi-wire submerged-arc soldering method | |
| CN206298642U (en) | It is a kind of that the laser cladding equipment for preheating gentle cold light is produced based on bifocal | |
| CN113652688B (en) | Laser cladding nickel-based tungsten carbide technology for copper alloy core glass mold | |
| CN104999181B (en) | A kind of laser InFocus electric arcs bifocus complex welding method | |
| CN111058030A (en) | Preheating and tempering laser cladding head with beam splitter and processing method | |
| CN115038536A (en) | System and method for laser metal powder deposition | |
| CN113755833A (en) | Laser cladding nickel-based alloy powder process for copper alloy primary mold glass mold | |
| CN216891220U (en) | Magnetic field assisted ultra-high-speed laser cladding system for numerical control center spindle | |
| CN114633022A (en) | Red copper material double-beam composite laser welding device and method | |
| CN111604593A (en) | Laser mirror image welding method | |
| CN113652683A (en) | Laser cladding nickel-based alloy powder process for gray cast iron primary mold glass mold | |
| CN207109087U (en) | Injection mold repair system based on laser melting coating | |
| CN110760842A (en) | Hot forging die laser bionic enhancement equipment and method based on galvanometer scanning |
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 |