CN110756938B - Rapid brazing compounding process based on iron-based material induction heating - Google Patents
Rapid brazing compounding process based on iron-based material induction heating Download PDFInfo
- Publication number
- CN110756938B CN110756938B CN201911023620.6A CN201911023620A CN110756938B CN 110756938 B CN110756938 B CN 110756938B CN 201911023620 A CN201911023620 A CN 201911023620A CN 110756938 B CN110756938 B CN 110756938B
- Authority
- CN
- China
- Prior art keywords
- brazing
- iron
- based material
- induction heating
- rapid
- 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.)
- Active
Links
- 238000005219 brazing Methods 0.000 title claims abstract description 71
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 title claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000013329 compounding Methods 0.000 title claims abstract description 15
- 230000006698 induction Effects 0.000 title claims abstract description 15
- 230000008569 process Effects 0.000 title claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 35
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000741 silica gel Substances 0.000 claims abstract description 11
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 11
- 230000004907 flux Effects 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 11
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 10
- 238000007710 freezing Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 6
- 229910052787 antimony Inorganic materials 0.000 description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/002—Soldering by means of induction heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Glass Compositions (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a rapid brazing compounding process based on iron-based material induction heating, which relates to the technical field of brazing, wherein the brazing performance of brazing filler metal is optimized by adding an iron-based material, and inorganic silica gel is added to play a role in tackifying, so that the rapid brazing compounding of a foamed aluminum material and an aluminum plate is realized, and the brazing quality is ensured; the method solves the problem of large-area brazing compounding of the foamed aluminum and the aluminum plate, has low equipment and auxiliary material cost, is easy to produce all-metal brazing composite plates in batches, and is particularly suitable for application fields of military industry, aerospace, ships and warships and the like with high requirements on the performance and stability of the composite plates.
Description
The technical field is as follows:
the invention relates to the technical field of brazing, in particular to a rapid brazing compounding process based on iron-based material induction heating.
Background art:
the foamed aluminum is a novel aluminum-based metal material which is prepared by adding an additive into pure aluminum or aluminum alloy and foaming or other processes, has the characteristics of metal and bubbles, and has the characteristics of low density, high temperature resistance, corrosion resistance, sound insulation, noise reduction, low thermal conductivity, strong impact absorption capacity, strong fire resistance, strong weather resistance and the like.
Brazing, which is a welding method that after brazing filler metal lower than the melting point of a weldment and the weldment are heated to the melting temperature of the brazing filler metal at the same time, the liquid brazing filler metal is used for filling the gaps of solid workpieces to connect the metals. The brazing filler metal, also known as brazing flux, can ensure that the brazing process is smoothly carried out and a firm brazing joint is obtained.
Brazing is seen as one of the most practical possibilities for joining aluminum foams, but some problems still remain. Firstly, due to the existence of gaps, the brazing filler metal on one side of the foamed aluminum is not well wetted and filled during brazing, and further, the mechanical property of the whole brazed joint is poor. Secondly, Al-Si brazing filler metal is usually adopted for brazing the foamed aluminum and the aluminum, although the brazing filler metal has good wettability to the foamed aluminum, the brazing filler metal has high melting point, the base metal is easy to be overburnt or even melted, and the mechanical property of the finally obtained brazed joint is not high. Moreover, the production efficiency is low, which is not beneficial to industrialized mass production.
The invention content is as follows:
the invention aims to solve the technical problem of providing a rapid brazing compounding process based on iron-based material induction heating, which solves the problem of large-area brazing compounding of foamed aluminum and an aluminum plate, has low equipment and auxiliary material cost and is easy to produce all-metal brazing composite plates in batches.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the rapid brazing compounding process based on the induction heating of the iron-based material comprises the following steps of:
(1) mixing a brazing flux with an iron-based material, and adding inorganic silica gel for tackifying to obtain a brazing filler metal;
(2) bonding the foamed aluminum material with an aluminum plate to be compounded by using the brazing filler metal;
(3) using induction heating outside the plate to heat the brazing flux to a melting temperature;
(4) and (5) rapidly cooling to finish the brazing forming.
The dosage of the iron-based material accounts for 10-30% of the mass of the brazing flux, and the dosage of the inorganic silica gel accounts for 2-4% of the mass of the brazing flux.
The iron-based material is iron powder or an iron-nickel-based material.
The iron-nickel-based material comprises the following chemical components in percentage by mass: 30-50% of Ni, 1-5% of Al, 0.2-1% of Mn, 0.1-0.5% of Ti and the balance of Fe.
The brazing flux consists of the following chemical components in percentage by mass: 10-30% of Al, 1-5% of Cu, 0.5-3% of Mg, 0.1-0.5% of Y, 0.1-0.5% of V and the balance of Zn. According to the invention, metal elements Y and V are added into the brazing flux to improve the mechanical property of the brazing joint.
The heating frequency of the induction heating is 1500-2000Hz, and the heating temperature is 500-800 ℃.
Forced water cooling is adopted for rapid cooling, and the water cooling speed is more than 100 ℃/min.
In order to optimize the mechanical property of a soldered joint by strengthening the soldering performance of the solder, the invention also replaces the preparation steps of the solder in the step (1) of the technical scheme with the following steps: and mixing the brazing flux, the iron-based material and the antimony powder, and adding the inorganic silica gel for tackifying to obtain the brazing filler metal.
The dosage of the antimony powder accounts for 0.1-1% of the mass of the brazing flux.
In order to stabilize the cellular structure of the foamed aluminum and improve the wettability of the brazing filler metal to the foamed aluminum, the invention also adopts an ultrasonic freezing treatment technology to pretreat the foamed aluminum, and replaces the step (2) in the technical scheme with 'using the brazing filler metal and bonding the foamed aluminum material subjected to ultrasonic freezing treatment with an aluminum plate needing to be compounded'.
The ultrasonic freezing treatment conditions comprise ultrasonic frequency of 40KHz, ultrasonic power of 1000W and freezing temperature of-15 ℃.
The invention has the beneficial effects that:
(1) the invention optimizes the brazing performance of the brazing filler metal by adding the iron-based material, and plays a role in tackifying by adding the inorganic silica gel, thereby realizing the rapid brazing compounding of the foamed aluminum material and the aluminum plate and simultaneously ensuring the brazing quality.
(2) The invention solves the problem of large-area brazing compounding of foamed aluminum and an aluminum plate, has low equipment and auxiliary material cost, is easy to produce all-metal brazing composite plates in batches, and is particularly suitable for application fields of military industry, aerospace, ships and warships and the like with high requirements on the performance and stability of the composite plates.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The inorganic silica gels in the following examples and comparative examples were obtained from Qingdao oceanic plants as inorganic silica gels having a particle size of 4 mm.
Example 1
(1) Mixing 10g of brazing flux with 1.5g of iron powder with the purity of more than 99.9 percent, and adding 0.3g of inorganic silica gel for tackifying to obtain brazing filler metal;
(2) bonding a foamed aluminum material having a size of 100mm × 100mm × 20mm to an aluminum plate having a size of 100mm × 100mm × 30mm using the brazing material;
(3) induction heating is carried out outside the plate, the heating frequency is 2000Hz, and the brazing flux is heated to 625 ℃ and is kept for 20 min;
(4) and (4) rapidly cooling, namely adopting forced water cooling at the water cooling speed of 120 ℃/min to finish the brazing forming.
The brazing flux consists of the following chemical components in percentage by mass: 14.5 percent of Al, 3.2 percent of Cu, 1.8 percent of Mg, 0.25 percent of Y, 0.15 percent of V and the balance of Zn.
Example 2
The iron powder of example 1 was replaced with an equal amount of iron-nickel based material and the remainder was the same as example 1.
The iron-nickel-based material comprises the following chemical components in percentage by mass: 34.8% of Ni, 3.2% of Al, 0.45% of Mn, 0.36% of Ti and the balance of Fe.
Example 3
The procedure of example 1 was followed except that "10 g of flux, 1.5g of iron-based material having a purity of more than 99.9% and 0.015g of antimony powder were mixed, and 0.3g of inorganic silica gel was added to increase viscosity to obtain a solder" in step (1) of example 1.
Example 4
The procedure (2) in example 1 was replaced with "the procedure in example 1, in which an ultrasonically-frozen foamed aluminum material having a size of 100 mm. times.100 mm. times.20 mm was bonded to an aluminum plate having a size of 100 mm. times.100 mm. times.30 mm at an ultrasonic frequency of 40KHz and an ultrasonic power of 1000W at a freezing temperature of-15 ℃ for an ultrasonic time of 30 min" using the above-mentioned brazing filler metal.
Comparative example 1
The flux of example 1 was deleted for element V, and the rest was the same as example 1.
Comparative example 2
The flux of example 1 was deleted for element Y, and the rest was the same as example 1.
Comparative example 3
The inorganic silica gel of example 1 was removed and the procedure of example 1 was repeated.
Comparative example 4
The iron powder of example 1 was deleted, and the rest was the same as example 1.
The foamed aluminum material and the aluminum plate of the same specification were brazed using the above examples and comparative examples, respectively, and the tensile strength and shear strength of the joint were measured according to the strength test method for the brazed joint of GB/T11363-.
TABLE 1 tensile Strength and shear Strength of brazed joints
| Group of | Tensile strength N/mm of joint2 | Joint shear strength N/mm2 |
| Example 1 | 129 | 29 |
| Example 2 | 134 | 32 |
| Example 3 | 137 | 35 |
| Example 4 | 141 | 37 |
| Comparative example 1 | 116 | 25 |
| Comparative example 2 | 112 | 23 |
| Comparative example 3 | 110 | 20 |
| Comparative example 4 | 83 | 15 |
As can be seen from Table 1, the technical effects of improving the tensile strength and the shear strength of the soldered joint to different degrees can be achieved by adding the elements V and Y in the soldering flux, adding the iron powder, the iron-nickel base material, the antimony powder and the inorganic silica gel in the solder and performing ultrasonic freezing treatment on the foamed aluminum.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The rapid brazing compounding process based on the induction heating of the iron-based material is characterized by comprising the following steps of:
(1) mixing a brazing flux with an iron-based material, and adding inorganic silica gel for tackifying to obtain a brazing filler metal;
(2) bonding the foamed aluminum material with an aluminum plate to be compounded by using the brazing filler metal;
(3) using induction heating outside the plate to heat the brazing flux to a melting temperature;
(4) rapidly cooling to finish the brazing forming;
the iron-based material is iron powder or an iron-nickel-based material;
the iron-nickel-based material comprises the following chemical components in percentage by mass: 30-50% of Ni, 1-5% of Al, 0.2-1% of Mn, 0.1-0.5% of Ti and the balance of Fe;
the brazing flux consists of the following chemical components in percentage by mass: 10-30% of Al, 1-5% of Cu, 0.5-3% of Mg, 0.1-0.5% of Y, 0.1-0.5% of V and the balance of Zn.
2. The rapid brazing compounding process based on induction heating of an iron-based material according to claim 1, wherein: the dosage of the iron-based material accounts for 10-30% of the mass of the brazing flux, and the dosage of the inorganic silica gel accounts for 2-4% of the mass of the brazing flux.
3. The rapid brazing compounding process based on induction heating of an iron-based material according to claim 1, wherein: the heating frequency of the induction heating is 1500-2000Hz, and the heating temperature is 500-800 ℃.
4. The rapid brazing compounding process based on induction heating of an iron-based material according to claim 1, wherein: forced water cooling is adopted for rapid cooling, and the water cooling speed is more than 100 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911023620.6A CN110756938B (en) | 2019-10-25 | 2019-10-25 | Rapid brazing compounding process based on iron-based material induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911023620.6A CN110756938B (en) | 2019-10-25 | 2019-10-25 | Rapid brazing compounding process based on iron-based material induction heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110756938A CN110756938A (en) | 2020-02-07 |
| CN110756938B true CN110756938B (en) | 2021-07-23 |
Family
ID=69333719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911023620.6A Active CN110756938B (en) | 2019-10-25 | 2019-10-25 | Rapid brazing compounding process based on iron-based material induction heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110756938B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941416A (en) * | 2012-11-05 | 2013-02-27 | 芜湖沃多福新材料有限责任公司 | Alloy brazing filler metal of brazing-flux-free brazing foamed aluminum core veneer and preparation method thereof |
| CN105195917A (en) * | 2015-10-30 | 2015-12-30 | 江苏科技大学 | Al-Si-Mg series amorphous brazing material for brazing foamed aluminum plate as well as preparation method and brazing method |
| CN105234580A (en) * | 2015-11-17 | 2016-01-13 | 镇江市锶达合金材料有限公司 | High-strength lead-free brazing filler metal for brazing |
| CN106141490A (en) * | 2016-07-01 | 2016-11-23 | 江苏科技大学 | A kind of solder for soldering foamed aluminium and foamed aluminium and the method for welding of aluminum |
| CN106180943A (en) * | 2016-08-16 | 2016-12-07 | 安徽澳雅合金有限公司 | A kind of welding method of foamed aluminium board |
| CN107486651A (en) * | 2017-08-02 | 2017-12-19 | 中国电器科学研究院有限公司 | A kind of preparation method of eutectic welding tablet |
| CN109604861A (en) * | 2018-11-16 | 2019-04-12 | 南京理工大学 | For connecting the iron-based solder of TiAl alloy Yu Ni based high-temperature alloy |
-
2019
- 2019-10-25 CN CN201911023620.6A patent/CN110756938B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941416A (en) * | 2012-11-05 | 2013-02-27 | 芜湖沃多福新材料有限责任公司 | Alloy brazing filler metal of brazing-flux-free brazing foamed aluminum core veneer and preparation method thereof |
| CN105195917A (en) * | 2015-10-30 | 2015-12-30 | 江苏科技大学 | Al-Si-Mg series amorphous brazing material for brazing foamed aluminum plate as well as preparation method and brazing method |
| CN105234580A (en) * | 2015-11-17 | 2016-01-13 | 镇江市锶达合金材料有限公司 | High-strength lead-free brazing filler metal for brazing |
| CN106141490A (en) * | 2016-07-01 | 2016-11-23 | 江苏科技大学 | A kind of solder for soldering foamed aluminium and foamed aluminium and the method for welding of aluminum |
| CN106180943A (en) * | 2016-08-16 | 2016-12-07 | 安徽澳雅合金有限公司 | A kind of welding method of foamed aluminium board |
| CN107486651A (en) * | 2017-08-02 | 2017-12-19 | 中国电器科学研究院有限公司 | A kind of preparation method of eutectic welding tablet |
| CN109604861A (en) * | 2018-11-16 | 2019-04-12 | 南京理工大学 | For connecting the iron-based solder of TiAl alloy Yu Ni based high-temperature alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110756938A (en) | 2020-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100493795C (en) | Process of obtaining composite brazed seam with ultrasonic brazed aluminium-base composite material | |
| CN105382440A (en) | Graphene-enhanced Al-based composite solder auxiliary soldering method | |
| CN104148822B (en) | A kind of low temperature brazing material | |
| CN1326658C (en) | Aluminium base composite material ultrasonic wave fine welding method | |
| CN108161277B (en) | High-entropy flux-cored wire for aluminum-steel submerged arc welding and preparation method thereof | |
| CN102935559B (en) | Composite zinc-aluminum flux cored wire containing beryllium and magnesium and rubidium salt and preparation method of flux cored wire | |
| CN103111743B (en) | The fast welding method of a kind of steel and aluminum or aluminum alloy | |
| CN102489813B (en) | Vacuum active brazing process of molybdenum-copper alloys and stainless steel | |
| CN100519032C (en) | Method for low temperature brazing aluminium alloy to obtain brazed joint with high temperature use performance | |
| CN109128577B (en) | Brazing filler metal for brazing Mn-Cu alloy and Fe-Cr-based alloy and preparation method thereof | |
| CN103231180A (en) | Aluminum alloy low-temperature brazing solder and production method thereof | |
| CN103084714A (en) | Laser preprocessing wire filling tungsten inert gas (TIG) welding method of titanium alloy and pure aluminum sheets | |
| CN105195917A (en) | Al-Si-Mg series amorphous brazing material for brazing foamed aluminum plate as well as preparation method and brazing method | |
| CN106392368A (en) | High-temperature Zn-based soft solder for soldering aluminum and copper and welding method | |
| CN111299898A (en) | Brazing flux-free vacuum brazing paste brazing filler metal, and preparation method and use method thereof | |
| CN111482731B (en) | Preparation method and application of metal welding material | |
| CN110756938B (en) | Rapid brazing compounding process based on iron-based material induction heating | |
| CN112975204B (en) | Self-fluxing brazing filler metal applied to aluminum-copper dissimilar material welding and welding method | |
| CN106624438A (en) | Zinc-aluminum solder | |
| CN112958865B (en) | Method for welding Al-Cu dissimilar materials by preset brazing filler metal | |
| CN108326384B (en) | Brazing process of high-strength corrosion-resistant aluminum-copper joint | |
| CN112975027B (en) | Aluminum-copper welding method | |
| CN110170763A (en) | Copper-aluminium solder | |
| CN112894191B (en) | Band-shaped brazing filler metal for lap brazing of copper plates and aluminum plates and preparation method thereof | |
| CN115740830A (en) | Aluminum-based interlayer alloy and preparation method and application thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240407 Address after: 276800 Standard No. 12 Factory Building for the Comprehensive Infrastructure Supporting Project (Phase II) of Shanhai Road High end Equipment Manufacturing Industrial Park, High tech Zone, Rizhao City, Shandong Province Patentee after: Rizhao Yiming New Materials Technology Co.,Ltd. Country or region after: China Address before: 236502 North Ring Road, Xicheng Industrial Park, Jieshou City, Fuyang City, Anhui Province Patentee before: ANHUI XINFANGZUN AUTOMATION TECHNOLOGY CO.,LTD. Country or region before: China |