CN108788530A - Fluorine-type fysed flux and preparation method thereof in a kind of high-silicon high-manganese peculiar to vessel - Google Patents
Fluorine-type fysed flux and preparation method thereof in a kind of high-silicon high-manganese peculiar to vessel Download PDFInfo
- Publication number
- CN108788530A CN108788530A CN201810704749.2A CN201810704749A CN108788530A CN 108788530 A CN108788530 A CN 108788530A CN 201810704749 A CN201810704749 A CN 201810704749A CN 108788530 A CN108788530 A CN 108788530A
- Authority
- CN
- China
- Prior art keywords
- manganese
- fluorine
- peculiar
- vessel
- fysed flux
- 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
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
Fluorine-type fysed flux and preparation method thereof, belongs to welding technology field in a kind of high-silicon high-manganese peculiar to vessel；Fysed flux contains ingredient：SiO2：38~42%, MnO：38~42%, CaF2：17~22%；Wherein, in mass ratio, 0.9≤MnO: SiO2≤1.1, the mass percent summation of each component is 100%；Preparation method：1) proportioning for pressing fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel weighs each component raw material and is uniformly mixed；Glassy state semi-finished product are made in smelted product water quenching by heat preservation >=15min after melting；2) by glassy state semi-finished product, product of roasting is made in high-temperature roasting；3) product of roasting is broken, sieving, granularity are that the particle of 12~120 mesh is fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel；The tensile strength intensity of fluorine-type fysed flux in present invention high-silicon high-manganese peculiar to vessel, the welding point obtained by postwelding is 676~705MPa, and (- 40 DEG C) of low-temperature impact work is 61~83J.
Description
Technical field
The invention belongs to welding technology field, fluorine-type fysed flux and its preparation side in specifically a kind of high-silicon high-manganese peculiar to vessel
Method.
Background technology
Submerged arc flux is one of main consumable material of submerged-arc welding, and Resistance of Weld Metal plays machinery and protects in the welding process
Shield, Metallurgical processing and the effect for improving welding technological properties, the welding technological properties and chemical metallurgy performance of solder flux are to determine weldering
An important factor for stitching metal quality.Compared to sintered flux, fysed flux has particle, and uniformly height, deposited metal composition are equal
The even, moisture absorption is inclined to the advantages that small, welding process is stable, gas fume amount is less, high recycling rate.Fluorine-type is welded in high-silicon high-manganese
SiO in agent2Content is high, the effect of transition silicon in the oriented weld seam of solder flux.Silicon can improve the deoxidizing capacity of weld metal, improve weldering
Stitch the intensity and hardness of metal.The effect of transition manganese in the oriented weld metal of the higher solder flux of MnO contents.Manganese, can in weld seam
To improve deoxidizing capacity, the brittleness of steel is reduced, mitigates detrimental effect of the sulphur to steel.CaF2Slag former and dilution are used as in solder flux
Agent increases the mobility of solder flux, can remove the hydrogen in solder flux.To meet industrialized production to the urgent of the solder flux of function admirable
Demand, it is necessary to it prepares a kind of function admirable, can realize weld metal high intensity and high rigidity, while welding arc stablility,
And there is smooth welding bead, fluorine-type fysed flux in the high-silicon high-manganese of good slag detachability.
Invention content
In view of the deficiencies of the prior art, the present invention provides fluorine-type fysed flux and its preparations in a kind of high-silicon high-manganese peculiar to vessel
Method；The fysed flux of the present invention is that a kind of welding process is stable, weld metal intensity is high, and hardness is high, composition of weld line and tissue
Uniformly, welding bead surface is smooth, the good fysed flux of deoxidizing capacity, meets deck of boat steel welding technology to the solder flux of function admirable
Pressing needs.
Fluorine-type smelting type welding flux in a kind of high-silicon high-manganese peculiar to vessel is by mass percentage containing ingredient：Si02：38~
42%, MnO：38~42%, CaF2：17~22%；Wherein, in mass ratio, 0.9≤MnO：SiO2≤1.1, the quality of each component
Percentage summation is 100%.
Fluorine-type fysed flux in the high-silicon high-manganese peculiar to vessel, the tensile strength of the welding point obtained by postwelding is 676~
705MPa, (- 40 DEG C) of low-temperature impact work are 61~83J.
The preparation method of fluorine-type fysed flux, includes the following steps in the high-silicon high-manganese peculiar to vessel of the present invention：
Step 1, melting：
(1) proportioning for pressing fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel, weighs each component raw materials of Ca F2、SiO2, MnO, will be each
Raw material is uniformly mixed；
(2) by uniformly mixed raw material, smelted product is made in heat preservation >=15min after melting；Wherein, smelting temperature >=
1450℃；
(3) by smelted product water quenching, glassy state semi-finished product are made；
Step 2, high-temperature roasting：
By glassy state semi-finished product, 3~5h is roasted at 700~900 DEG C, and product of roasting is made；
Step 3, it is crushed：
Product of roasting is broken, sieving, granularity are that the particle of 12~120 mesh is fluorine-type melting weldering in high-silicon high-manganese peculiar to vessel
Agent.
The preparation method of fluorine-type fysed flux in above-mentioned high-silicon high-manganese peculiar to vessel, wherein：
In the step 1, each raw material is put into mixing equipment, by stirring to obtain uniform powder.
In the step 1, melting uses graphite crucible.
In the step 2, high-temperature roasting uses Muffle furnace.
In the step 2, the carbon dust in solder flux is eliminated by high-temperature roasting.
Fluorine-type fysed flux in the high-silicon high-manganese peculiar to vessel, before welding need to be at 200~400 DEG C, drying >=2h.Drying is adopted
It is dried with drying box.
Fluorine-type fysed flux and preparation method thereof, compared with prior art, has in a kind of high-silicon high-manganese peculiar to vessel of the present invention
Beneficial effect：
The present invention is prepared for fluorine fysed flux in a kind of New Marine high-silicon high-manganese, which has good chemical composition
Uniformity, moisture absorption is low (storage convenient), can be well matched with low-carbon and low-alloy ship steel and obtain uniform composition of weld line, good
Good weld strength and hardness；Weld metal ingredient is uniform, and metal welding bead is smooth, and deoxidation is good, after testing zero defect, can
Meet the technological requirement of welding.
Specific implementation mode
Embodiment 1
Fluorine-type fysed flux in a kind of high-silicon high-manganese peculiar to vessel is by mass percentage containing ingredient：MnO：39%,
SiO2：42%, CaF2：19%.
The preparation method of fluorine-type fysed flux, includes the following steps in the high-silicon high-manganese peculiar to vessel of the present invention：
Step 1, melting：
(1) proportioning for pressing fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel, weighs each component raw materials of Ca F2、SiO2, MnO, will be each
Raw material is put into mixing equipment, is stirred by mixing；
(2) by uniformly mixed raw material, 15min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
It is 1490 DEG C to refine temperature；
(3) by smelted product water quenching, glassy state semi-finished product are made；
Step 2, high-temperature roasting：
By glassy state semi-finished product, 2.5h is roasted at 800 DEG C using Muffle furnace, product of roasting is made, is gone by high-temperature roasting
In addition to the carbon dust in solder flux；
Step 3, it is crushed：
Product of roasting is broken, sieving, granularity are that the particle of 12~120 mesh is fluorine-type melting weldering in high-silicon high-manganese peculiar to vessel
Agent.
Fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel manufactured in the present embodiment uses drying box at 200 DEG C before welding, does
Dry 2h；Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, the weldering obtained by postwelding
It is as follows to connect joint performance index：Tensile strength is 677MPa, and (- 40 DEG C) of low-temperature impact work is 69J, and composition of weld line is uniform, welding
Arc stability, welding bead is smooth, and the removability of slag is good.
Embodiment 2
Fluorine-type fysed flux in a kind of high-silicon high-manganese peculiar to vessel is by mass percentage containing ingredient：MnO：41%,
SiO2：41%, CaF2：18%.
The preparation method of fluorine-type fysed flux, includes the following steps in the high-silicon high-manganese peculiar to vessel of the present invention：
Step 1, melting：
(1) proportioning for pressing fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel, weighs each component raw materials of Ca F2、SiO2, MnO, will be each
Raw material is put into mixing equipment, is stirred by mixing；
(2) by uniformly mixed raw material, 15min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
It is 1490 DEG C to refine temperature；
(3) by smelted product water quenching, glassy state semi-finished product are made；
Step 2, high-temperature roasting：
By glassy state semi-finished product, 2.5h is roasted at 800 DEG C using Muffle furnace, product of roasting is made, is gone by high-temperature roasting
In addition to the carbon dust in solder flux；
Step 3, it is crushed：
Product of roasting is broken, sieving, granularity are that the particle of 12~120 mesh is fluorine-type melting weldering in high-silicon high-manganese peculiar to vessel
Agent.Fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel manufactured in the present embodiment uses drying box at 200 DEG C before welding, dry 2h；
Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, welds the welding obtained by postwelding
Joint performance index is as follows：Tensile strength is 688MPa, and (- 40 DEG C) of low-temperature impact work is 72J, and composition of weld line is uniform, welding electricity
Arc is stablized, and welding bead is smooth, and the removability of slag is good.
Embodiment 3
Fluorine-type fysed flux in a kind of high-silicon high-manganese peculiar to vessel is by mass percentage containing ingredient：MnO：41%,
SiO2：39%, CaF2：20%.
The preparation method of fluorine-type fysed flux, includes the following steps in the high-silicon high-manganese peculiar to vessel of the present invention：
Step 1, melting：
(1) proportioning for pressing fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel, weighs each component raw materials of Ca F2、SiO2, MnO, will be each
Raw material is put into mixing equipment, is stirred by mixing；
(2) by uniformly mixed raw material, 15min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
It is 1490 DEG C to refine temperature；
(3) by smelted product water quenching, glassy state semi-finished product are made；
Step 2, high-temperature roasting：
By glassy state semi-finished product, 2.5h is roasted at 800 DEG C using Muffle furnace, product of roasting is made, is gone by high-temperature roasting
In addition to the carbon dust in solder flux；
Step 3, it is crushed：
Product of roasting is broken, sieving, granularity are that the particle of 12~120 mesh is fluorine-type melting weldering in high-silicon high-manganese peculiar to vessel
Agent.Fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel manufactured in the present embodiment uses drying box at 200 DEG C before welding, dry 2h；
Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, the welding obtained by postwelding connects
Head performance indicator is as follows：Tensile strength is 700MPa, and (- 40 DEG C) of low-temperature impact work is 74J, and composition of weld line is uniform, welding arc
Stablize, welding bead is smooth, and the removability of slag is good.
Embodiment 4
Fluorine-type fysed flux in a kind of high-silicon high-manganese peculiar to vessel is by mass percentage containing ingredient：MnO：42%,
SiO2：40%, CaF2：18%.
The preparation method of fluorine-type fysed flux, includes the following steps in the high-silicon high-manganese peculiar to vessel of the present invention：
Step 1, melting：
(1) proportioning for pressing fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel, weighs each component raw materials of Ca F2、SiO2, MnO, will be each
Raw material is put into mixing equipment, is stirred by mixing；
(2) by uniformly mixed raw material, 15min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
It is 1490 DEG C to refine temperature；
(3) by smelted product water quenching, glassy state semi-finished product are made；
Step 2, high-temperature roasting：
By glassy state semi-finished product, 2.5h is roasted at 800 DEG C using Muffle furnace, product of roasting is made, is gone by high-temperature roasting
In addition to the carbon dust in solder flux；
Step 3, it is crushed：
Product of roasting is broken, sieving, granularity are that the particle of 12~120 mesh is fluorine-type melting weldering in high-silicon high-manganese peculiar to vessel
Agent.Fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel manufactured in the present embodiment uses drying box at 200 DEG C before welding, dry 2h；
Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, the welding obtained by postwelding connects
Head performance indicator is as follows：Tensile strength is 705MPa, and (- 40 DEG C) of low-temperature impact work is 82J, and composition of weld line is uniform, welding arc
Stablize, welding bead is smooth, and the removability of slag is good.
Claims (4)
1. fluorine-type fysed flux in a kind of high-silicon high-manganese peculiar to vessel, which is characterized in that the fysed flux contains ingredient by quality hundred
Point ratio is：SiO2：38~42%, MnO：38~42%, CaF2：17~22%；Wherein, in mass ratio, 0.9≤MnO：SiO2≤
1.1, the mass percent summation of each component is 100%.
2. fluorine-type fysed flux in a kind of high-silicon high-manganese peculiar to vessel according to claim 1, which is characterized in that the height peculiar to vessel
The tensile strength intensity of fluorine-type fysed flux in silicon high-manganese, the welding point obtained by postwelding is 676~705MPa, low-temperature impact work
(- 40 DEG C) are 61~83J.
3. the preparation method of fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel as claimed in claim 1 or 2, which is characterized in that including
Following steps：
Step 1, melting：
(1) proportioning for pressing fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel, weighs each component raw materials of Ca F2、SiO2, MnO, by each raw material
It is uniformly mixed；
(2) by uniformly mixed raw material, smelted product is made in heat preservation >=15min after melting；Wherein, smelting temperature >=1450 DEG C；
(3) by smelted product water quenching, glassy state semi-finished product are made；
Step 2, high-temperature roasting：
By glassy state semi-finished product, 3~5h is roasted at 700~900 DEG C, and product of roasting is made；
Step 3, it is crushed：
Product of roasting is broken, sieving, granularity are that the particle of 12~120 mesh is fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel.
4. the preparation method of fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel according to claim 3, which is characterized in that described
Fluorine-type fysed flux in high-silicon high-manganese peculiar to vessel, before welding need to be at 200~400 DEG C, drying >=2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704749.2A CN108788530A (en) | 2018-06-30 | 2018-06-30 | Fluorine-type fysed flux and preparation method thereof in a kind of high-silicon high-manganese peculiar to vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704749.2A CN108788530A (en) | 2018-06-30 | 2018-06-30 | Fluorine-type fysed flux and preparation method thereof in a kind of high-silicon high-manganese peculiar to vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108788530A true CN108788530A (en) | 2018-11-13 |
Family
ID=64073864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810704749.2A Pending CN108788530A (en) | 2018-06-30 | 2018-06-30 | Fluorine-type fysed flux and preparation method thereof in a kind of high-silicon high-manganese peculiar to vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788530A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI773514B (en) * | 2021-09-03 | 2022-08-01 | 國立屏東科技大學 | Tig welding flux for chromium-molybdenum steels |
| CN117086511A (en) * | 2023-10-19 | 2023-11-21 | 东北大学 | Smelting flux easy to deslagge and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294555A (en) * | 2011-08-16 | 2011-12-28 | 刘茂平 | Fused flux prepared from silicon-manganese alloy slag |
| CN102814602A (en) * | 2012-09-07 | 2012-12-12 | 蒋才银 | Silicon-free high-toughness corrosion-resistant fused flux and production method thereof |
| CN106041371A (en) * | 2016-07-04 | 2016-10-26 | 常州大学 | Smelting flux for submerged-arc welding and preparation method and application of smelting flux |
| CN106078003A (en) * | 2016-06-30 | 2016-11-09 | 南京南化建设有限公司 | A kind of caustic fusion solder flux used for submerged arc welding and application |
-
2018
- 2018-06-30 CN CN201810704749.2A patent/CN108788530A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294555A (en) * | 2011-08-16 | 2011-12-28 | 刘茂平 | Fused flux prepared from silicon-manganese alloy slag |
| CN102814602A (en) * | 2012-09-07 | 2012-12-12 | 蒋才银 | Silicon-free high-toughness corrosion-resistant fused flux and production method thereof |
| CN106078003A (en) * | 2016-06-30 | 2016-11-09 | 南京南化建设有限公司 | A kind of caustic fusion solder flux used for submerged arc welding and application |
| CN106041371A (en) * | 2016-07-04 | 2016-10-26 | 常州大学 | Smelting flux for submerged-arc welding and preparation method and application of smelting flux |
Non-Patent Citations (3)
| Title |
|---|
| 唐伯钢 等: "《低碳钢与低合金高强度钢焊接材料》", 31 July 1987, 机械工业出版社 * |
| 邱言龙 等: "《焊工快速上手100例》", 30 June 2015, 上海科学技术出版社 * |
| 黄石生 等: "《焊接科学基础焊接方法与过程控制基础》", 30 September 2014, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI773514B (en) * | 2021-09-03 | 2022-08-01 | 國立屏東科技大學 | Tig welding flux for chromium-molybdenum steels |
| CN117086511A (en) * | 2023-10-19 | 2023-11-21 | 东北大学 | Smelting flux easy to deslagge and preparation method and application thereof |
| CN117086511B (en) * | 2023-10-19 | 2024-01-09 | 东北大学 | Smelting flux easy to deslagge and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108526763A (en) | A kind of high alkalinity fluorine alkaline type fysed flux peculiar to vessel and preparation method thereof | |
| CN106514055A (en) | Ship steel submerged-arc horizontal welding flux and preparation method thereof | |
| CN108544139A (en) | A kind of high fluorine-type sintered flux of low titanium peculiar to vessel and preparation method thereof | |
| CN103433642B (en) | Low-hydrogen basic electrode for 1Ni9 low-temperature steel welding and preparation method of low-hydrogen basic electrode | |
| CN108465980A (en) | A kind of high silicon fysed flux of fluorine alkaline type peculiar to vessel and preparation method thereof | |
| CN108788529A (en) | A kind of high alkalinity fluorine alkaline type sintered flux peculiar to vessel and preparation method thereof | |
| CN113695788A (en) | Amorphous state smelting flux and preparation method and application thereof | |
| CN108788530A (en) | Fluorine-type fysed flux and preparation method thereof in a kind of high-silicon high-manganese peculiar to vessel | |
| WO2021136066A1 (en) | Submerged arc welding wire steel for low alloy steel plate and preparation method therefor | |
| CN108747088A (en) | A kind of high alkalinity high-silicon type fysed flux peculiar to vessel and preparation method thereof | |
| CN109093286A (en) | A kind of 2.25Cr-1Mo steel exchange submerged arc welding welding wire and solder flux | |
| CN108747087A (en) | One kind middle high fluorine-type fysed flux of titanium peculiar to vessel and preparation method thereof | |
| CN108637527A (en) | A kind of Lincoln weld sintered flux and preparation method for 1000MPa high-strength steel | |
| CN108788527A (en) | A kind of Super-high Manganese high-silicon type fysed flux peculiar to vessel and preparation method thereof | |
| CN108788538A (en) | One kind middle high fluorine-type sintered flux of titanium peculiar to vessel and preparation method thereof | |
| CN108568616A (en) | Fluorine-type fysed flux and preparation method thereof in manganese in one kind high silicon peculiar to vessel | |
| CN108526764A (en) | Low fluorine-type fysed flux of a kind of high-silicon high-manganese peculiar to vessel and preparation method thereof | |
| CN108526761A (en) | A kind of fluorine alkali silico-calcium type fysed flux peculiar to vessel and preparation method thereof | |
| CN108723639A (en) | One kind high high fluorine-type fysed flux of titanium peculiar to vessel and preparation method thereof | |
| CN108817732A (en) | A kind of high fluorine-type fysed flux of low titanium peculiar to vessel and preparation method thereof | |
| CN108788526A (en) | Low fluorine-type sintered flux of a kind of high-silicon high-manganese peculiar to vessel and preparation method thereof | |
| CN107127478A (en) | A kind of flux-cored wire | |
| CN106514053A (en) | Sintering flux used for stainless steel high-speed electro-slag strip surfacing and preparation method for same | |
| CN110293335A (en) | A kind of high fluorine aluminium titanium-type fysed flux of low titanium peculiar to vessel and preparation method thereof | |
| CN108465979A (en) | A kind of Super-high Manganese high-silicon type sintered flux peculiar to vessel and preparation method 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |
|
| RJ01 | Rejection of invention patent application after publication |