CN106736042A - A kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux - Google Patents
A kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux Download PDFInfo
- Publication number
- CN106736042A CN106736042A CN201611211672.2A CN201611211672A CN106736042A CN 106736042 A CN106736042 A CN 106736042A CN 201611211672 A CN201611211672 A CN 201611211672A CN 106736042 A CN106736042 A CN 106736042A
- Authority
- CN
- China
- Prior art keywords
- moisture
- sintered flux
- mixing
- high tenacity
- absorbing
- 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
- B23K35/362—Selection of compositions of fluxes
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention relates to a kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux, belong to sintered flux preparing technical field.After discarded silicate glass and basalt stone are carried out broken ball milling by the present invention first, through melting and drawing silk, collection obtains composite fibre, by it, material carries out mixing cast with aluminum oxide, wollastonite etc. again, collection obtains mixing blank, calcined after then being ground, you can obtain high tenacity Anti-moisture-absorbing sintered flux.High tenacity Anti-moisture-absorbing sintered flux prepared by the present invention causes weld seam impact toughness, and at a temperature of 20 DEG C, impact absorbing energy is more than 45J；Anti-moisture absorption property is good, reduces the interaction of the composition and water in sintered flux, reduces its moisture absorption gas tendency, has broad application prospects.
Description
Technical field
The present invention relates to a kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux, belong to sintered flux technology of preparing neck
Domain.
Background technology
Solder flux plays a part of protection, Metallurgical processing to metal and improves welding technological properties in weld deposit process.Sintering weldering
Agent is a kind of novel welding material that the eighties in 20th century introduces, and compared with fysed flux, with consuming energy, small, pollution-free defending connects work
Skill performance is good, the advantages of deposited metal alloying can be realized, improve its mechanical property.This sintered flux product extensive use
In important built-up welding such as boilers and pressure vessel, steel mill's spare part, pressure vessels for the chemical industry, nuclear power station, bridge, ship, spiral welded pipe and pipelines
Part.
Low alkalinity slag system sintered flux is readily available good processing performance, but weld seam impact toughness is not high；High basicity slag
It is that sintered flux is readily available high tenacity weld seam, but its welding technological properties is not good.Common low alkalinity slag system, such as silicomanganese type,
Contain substantial amounts of SiO in the slag system such as silico-calcium type and aluminium titanium-type2Or TiO2Deng acidic oxide, weld seam oxygen content is higher, low-temperature impact
Toughness is poor；And improve due to having added more basic anhydride in high alkalinity slag system, such as fluorine alkaline type, aluminium alkaline slag system
The basicity of solder flux, reduces the oxygen content of weld seam, improves the low-temperature flexibility of weld seam, but, due to adding the alkali such as CaO, MgO too much
Property oxide, the fusing point of slag is raised significantly, and high-temperature viscosity, surface tension are excessive, cause processing performance to deteriorate, and appearance of weld is not
It is good, take off slag difficult.But this kind of sintered flux is using the sintering process of lower temperature, although by high temperature mass transport process gradually
Densification, but the intensity and consistency of sintered flux particle under normal circumstances are still undesirable, with larger specific surface area, weldering
The effect of contained easy moisture absorbing component Yu vapor is strong in agent composition, and moisture absorption tendency is big, and the broken efflorescence of flux particle.
The content of the invention
The technical problems to be solved by the invention：For traditional sintered flux poor impact toughness, moisture absorption tendency is big, causes
The not good problem of its welding technological properties, there is provided a kind of that sintered flux is strengthened by basalt fibre, while passing through silicate
Glass is combined and protective layer is formed after calcining, and effectively prevents its absorption to moisture content, the method for reinforcing material anti-moisture absorption capacity, sheet
After discarded silicate glass and basalt stone are carried out broken ball milling by invention first, through melting and drawing silk, collection is mixed
Fiber, then material carries out mixing cast with aluminum oxide, wollastonite etc. by it, collection obtains mixing blank, after then being ground
Calcining, you can obtain high tenacity Anti-moisture-absorbing sintered flux.The present invention prepare sintered flux toughness it is high, with anti-suction higher
Wet performance, connects arc stability, and the removability of slag can be good, has broad application prospects.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
（1）In mass ratio 1:3, discarded silicate glass is mixed with basalt stone and is placed in hydraulic breaker, crush and receive
Integrate particle diameter is 1cm hybrid particles, hybrid particles are placed in ball grinder, milled under 350~400r/min and cross 120 mesh
Sieve, collects to obtain mixing and ball milling powder；
（2）The mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, crucible is placed in Muffle furnace, by 10 DEG C/min liters
Temperature after 45~60min of insulation melting, obtains melting mixing liquid to 1350~1450 DEG C, and melting mixing liquid is used into glass from crucible mouth
Glass rod carries out drawing silk, naturally cools to room temperature, collects a diameter of 20~30 μm of composite fibre；
（3）Count by weight, weigh respectively 45~50 parts of composite fibre of above-mentioned preparation, 5~10 parts of aluminum oxide, 15~20 parts
Wollastonite and 15~20 parts of moduluses are that 2.3 waterglass is placed in beaker, and stirring mixes and is poured into stainless steel mould, in room
Temperature is lower to stand 6~8h of solidification；
（4）Treat after the completion of standing solidification, the demoulding simultaneously collects mixing blank, mixing blank crushed and ground 50~60 mesh sieve,
Collecting must mix blank particle, then will mixing blank particle be placed in tube type resistance furnace, at 120~130 DEG C preheat 10~
15min, then 750~850 DEG C are warming up to by 10~15 DEG C/min, after 1~2h of insulation calcining, cooling to room temperature with the furnace, discharging is
A kind of high tenacity Anti-moisture-absorbing sintered flux can be prepared into.
Application process of the invention：The steel plate that selection one need to be sintered, is eliminated rust, deoiled and is dried dehydrogenation to it,
High tenacity Anti-moisture-absorbing sintered flux prepared by the present invention is placed in submerged arc welding machine, welding wire is welded in required welding after clearing up
Place, controls welding current for 550A, and weldingvoltage is 30V, and speed of welding is 26.4m/h, is weld nature after welding terminates
It is cooled to room temperature.After testing, weld yield strength reaches more than 550MPa, and tensile strength reaches more than 645MPa ,-
At a temperature of 20 DEG C, impact absorbing energy is more than 45J.
Compared with other method, Advantageous Effects are the present invention：
（1）High tenacity Anti-moisture-absorbing sintered flux prepared by the present invention causes weld seam impact toughness, at a temperature of -20 DEG C, impact
Absorb work(and be more than 45J；
（2）High tenacity Anti-moisture-absorbing sintered flux anti-moisture absorption property prepared by the present invention is good, reduces the composition in sintered flux
With the interaction of water, its moisture absorption gas tendency is reduced；
（3）High tenacity Anti-moisture-absorbing sintered flux preparation process prepared by the present invention is simple, required low cost, should with wide
Use prospect.
Specific embodiment
First in mass ratio 1:3, discarded silicate glass is mixed with basalt stone and is placed in hydraulic breaker, break
It is broken collect particle diameter be 1cm hybrid particles, hybrid particles are placed in ball grinder, milled under 350~400r/min and cross 120
Mesh sieve, collects to obtain mixing and ball milling powder；The mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, crucible is placed in Muffle
In stove, 1350~1450 DEG C are warming up to by 10 DEG C/min, after 45~60min of insulation melting, melting mixing liquid are obtained, by melting mixing
Liquid is carried out drawing silk from crucible mouth with glass bar, naturally cools to room temperature, collects a diameter of 20~30 μm of composite fibre；Press again
Parts by weight meter, respectively weigh 45~50 parts of composite fibre of above-mentioned preparation, 5~10 parts of aluminum oxide, 15~20 parts of wollastonites and
15~20 parts of moduluses are that 2.3 waterglass is placed in beaker, and stirring mixes and is poured into stainless steel mould, stands at room temperature
6~8h of solidification；Treat after the completion of standing solidification, the demoulding simultaneously collects mixing blank, mixing blank is crushed and ground 50~60 mesh
Sieve, collecting must mix blank particle, and then mixing blank particle is placed in tube type resistance furnace, and 10 are preheated at 120~130 DEG C
~15min, then 750~850 DEG C are warming up to by 10~15 DEG C/min, after 1~2h of insulation calcining, cool to room temperature with the furnace, discharge
A kind of high tenacity Anti-moisture-absorbing sintered flux can be prepared into.
Example 1
First in mass ratio 1:3, discarded silicate glass is mixed with basalt stone and is placed in hydraulic breaker, crush and receive
Integrate particle diameter is 1cm hybrid particles, hybrid particles are placed in ball grinder, milled under 400r/min and cross 120 mesh sieves, collect
Obtain mixing and ball milling powder；The mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, crucible is placed in Muffle furnace, by 10
DEG C/min is warming up to 1450 DEG C, after insulation melting 60min, obtains melting mixing liquid, and melting mixing liquid is used into glass from crucible mouth
Rod carries out drawing silk, naturally cools to room temperature, collects a diameter of 30 μm of composite fibre；Count by weight again, 50 are weighed respectively
The composite fibre of part above-mentioned preparation, 10 parts of aluminum oxide, 20 parts of wollastonites and 20 parts of moduluses are that 2.3 waterglass is placed in beaker,
Stirring mixes and is poured into stainless steel mould, and solidification 8h is stood at room temperature；Treat after the completion of standing solidification, the demoulding is simultaneously collected mixed
Blank is closed, mixing blank is crushed and ground 60 mesh sieve, collecting must mix blank particle, be then placed in mixing blank particle
In tube type resistance furnace, 15min is preheated at 130 DEG C, then 850 DEG C, after insulation calcining 2h, furnace cooling are warming up to by 15 DEG C/min
To room temperature, discharging can be prepared into a kind of high tenacity Anti-moisture-absorbing sintered flux.
The steel plate that selection one need to be sintered, is eliminated rust, deoiled and is dried dehydrogenation to it, high-ductility prepared by the present invention
Property Anti-moisture-absorbing sintered flux be placed in submerged arc welding machine, welding wire is welded in required weld after cleaning, control the welding current to be
550A, weldingvoltage is 30V, and speed of welding is 26.4m/h, is that weld naturally cools to room temperature after welding terminates.Through
Detection, weld yield strength reaches 554MPa, and tensile strength reaches 650MPa, and at a temperature of -20 DEG C, impact absorbing energy is
50J。
Example 2
First in mass ratio 1:3, discarded silicate glass is mixed with basalt stone and is placed in hydraulic breaker, crush and receive
Integrate particle diameter is 1cm hybrid particles, hybrid particles are placed in ball grinder, milled under 350r/min and cross 120 mesh sieves, collect
Obtain mixing and ball milling powder；The mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, crucible is placed in Muffle furnace, by 10
DEG C/min is warming up to 1350 DEG C, after insulation melting 45min, obtains melting mixing liquid, and melting mixing liquid is used into glass from crucible mouth
Rod carries out drawing silk, naturally cools to room temperature, collects a diameter of 20 μm of composite fibre；Count by weight again, 45 are weighed respectively
The composite fibre of part above-mentioned preparation, 5 parts of aluminum oxide, 15 parts of wollastonites and 15 parts of moduluses are that 2.3 waterglass is placed in beaker, are stirred
Mix and mix and be poured into stainless steel mould, solidification 6h is stood at room temperature；Treat after the completion of standing solidification, the demoulding simultaneously collects mixing
Blank, mixing blank is crushed and ground 50 mesh sieve, and collecting must mix blank particle, and mixing blank particle then is placed in into pipe
In formula resistance furnace, 10min is preheated at 120 DEG C, then 750 DEG C are warming up to by 10 DEG C/min, after insulation calcining 1h, cooled to the furnace
Room temperature, discharging can be prepared into a kind of high tenacity Anti-moisture-absorbing sintered flux.
The steel plate that selection one need to be sintered, is eliminated rust, deoiled and is dried dehydrogenation to it, high-ductility prepared by the present invention
Property Anti-moisture-absorbing sintered flux be placed in submerged arc welding machine, welding wire is welded in required weld after cleaning, control the welding current to be
550A, weldingvoltage is 30V, and speed of welding is 26.4m/h, is that weld naturally cools to room temperature after welding terminates.Through
Detection, weld yield strength reaches 557MPa, and tensile strength reaches 649MPa, and at a temperature of -20 DEG C, impact absorbing energy is
47J。
Example 3
First in mass ratio 1:3, discarded silicate glass is mixed with basalt stone and is placed in hydraulic breaker, crush and receive
Integrate particle diameter is 1cm hybrid particles, hybrid particles are placed in ball grinder, milled under 370r/min and cross 120 mesh sieves, collect
Obtain mixing and ball milling powder；The mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, crucible is placed in Muffle furnace, by 10
DEG C/min is warming up to 1400 DEG C, after insulation melting 50min, obtains melting mixing liquid, and melting mixing liquid is used into glass from crucible mouth
Rod carries out drawing silk, naturally cools to room temperature, collects a diameter of 25 μm of composite fibre；Count by weight again, 47 are weighed respectively
The composite fibre of part above-mentioned preparation, 7 parts of aluminum oxide, 17 parts of wollastonites and 17 parts of moduluses are that 2.3 waterglass is placed in beaker, are stirred
Mix and mix and be poured into stainless steel mould, solidification 7h is stood at room temperature；Treat after the completion of standing solidification, the demoulding simultaneously collects mixing
Blank, mixing blank is crushed and ground 55 mesh sieve, and collecting must mix blank particle, and mixing blank particle then is placed in into pipe
In formula resistance furnace, 12min is preheated at 125 DEG C, then 800 DEG C are warming up to by 12 DEG C/min, after insulation calcining 1h, cooled to the furnace
Room temperature, discharging can be prepared into a kind of high tenacity Anti-moisture-absorbing sintered flux.
The steel plate that selection one need to be sintered, is eliminated rust, deoiled and is dried dehydrogenation to it, high-ductility prepared by the present invention
Property Anti-moisture-absorbing sintered flux be placed in submerged arc welding machine, welding wire is welded in required weld after cleaning, control the welding current to be
550A, weldingvoltage is 30V, and speed of welding is 26.4m/h, is that weld naturally cools to room temperature after welding terminates.Through
Detection, weld yield strength reaches 557MPa, and tensile strength reaches 652MPa, and at a temperature of -20 DEG C, impact absorbing energy is
48J。
Claims (1)
1. a kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux, it is characterised in that specific preparation process is：
（1）In mass ratio 1:3, discarded silicate glass is mixed with basalt stone and is placed in hydraulic breaker, crush and receive
Integrate particle diameter is 1cm hybrid particles, hybrid particles are placed in ball grinder, milled under 350~400r/min and cross 120 mesh
Sieve, collects to obtain mixing and ball milling powder；
（2）The mixing and ball milling powder of above-mentioned preparation is placed in graphite crucible, crucible is placed in Muffle furnace, by 10 DEG C/min liters
Temperature after 45~60min of insulation melting, obtains melting mixing liquid to 1350~1450 DEG C, and melting mixing liquid is used into glass from crucible mouth
Glass rod carries out drawing silk, naturally cools to room temperature, collects a diameter of 20~30 μm of composite fibre；
（3）Count by weight, weigh respectively 45~50 parts of composite fibre of above-mentioned preparation, 5~10 parts of aluminum oxide, 15~20 parts
Wollastonite and 15~20 parts of moduluses are that 2.3 waterglass is placed in beaker, and stirring mixes and is poured into stainless steel mould, in room
Temperature is lower to stand 6~8h of solidification；
（4）Treat after the completion of standing solidification, the demoulding simultaneously collects mixing blank, mixing blank crushed and ground 50~60 mesh sieve,
Collecting must mix blank particle, then will mixing blank particle be placed in tube type resistance furnace, at 120~130 DEG C preheat 10~
15min, then 750~850 DEG C are warming up to by 10~15 DEG C/min, after 1~2h of insulation calcining, cooling to room temperature with the furnace, discharging is
A kind of high tenacity Anti-moisture-absorbing sintered flux can be prepared into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611211672.2A CN106736042A (en) | 2016-12-25 | 2016-12-25 | A kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611211672.2A CN106736042A (en) | 2016-12-25 | 2016-12-25 | A kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106736042A true CN106736042A (en) | 2017-05-31 |
Family
ID=58920843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611211672.2A Pending CN106736042A (en) | 2016-12-25 | 2016-12-25 | A kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106736042A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841091A (en) * | 2017-11-03 | 2018-03-27 | 常州通和建筑工程有限公司 | A kind of preparation method of obdurability epoxy fill-sealing materials |
| CN109967918A (en) * | 2017-12-27 | 2019-07-05 | 株式会社神户制钢所 | The submerged arc welding bonded flux of two phase stainless steel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133123A1 (en) * | 2003-12-01 | 2005-06-23 | Touchstone Research Laboratory, Ltd. | Glass fiber metal matrix composites |
| CN101314200A (en) * | 2008-05-08 | 2008-12-03 | 宝鸡市宇生焊接材料有限公司 | High-strength high-ductility fluorine alkalescent sintered flux |
| CN102091567A (en) * | 2010-12-09 | 2011-06-15 | 江南大学 | Anticaking agent for alkali metal titanates and manufacturing method thereof |
| CN102581518A (en) * | 2012-03-23 | 2012-07-18 | 北京金威焊材有限公司 | Sintered flux for stainless steel surfacing with band electrode |
| CN105506805A (en) * | 2015-12-01 | 2016-04-20 | 仇颖超 | Basalt fiber enhance modification AbutilontheophrastiMedicus fiber composite material preparation method |
| CN105732951A (en) * | 2016-03-31 | 2016-07-06 | 常州达奥新材料科技有限公司 | Method for preparing sepiolite composite basalt fiber reinforced shape memory polyurethane |
| CN106119746A (en) * | 2016-07-30 | 2016-11-16 | 山西晋投玄武岩开发有限公司 | A kind of corrosion-resistant basalt fibre strengthens copper-base alloy composite material |
-
2016
- 2016-12-25 CN CN201611211672.2A patent/CN106736042A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133123A1 (en) * | 2003-12-01 | 2005-06-23 | Touchstone Research Laboratory, Ltd. | Glass fiber metal matrix composites |
| CN101314200A (en) * | 2008-05-08 | 2008-12-03 | 宝鸡市宇生焊接材料有限公司 | High-strength high-ductility fluorine alkalescent sintered flux |
| CN102091567A (en) * | 2010-12-09 | 2011-06-15 | 江南大学 | Anticaking agent for alkali metal titanates and manufacturing method thereof |
| CN102581518A (en) * | 2012-03-23 | 2012-07-18 | 北京金威焊材有限公司 | Sintered flux for stainless steel surfacing with band electrode |
| CN105506805A (en) * | 2015-12-01 | 2016-04-20 | 仇颖超 | Basalt fiber enhance modification AbutilontheophrastiMedicus fiber composite material preparation method |
| CN105732951A (en) * | 2016-03-31 | 2016-07-06 | 常州达奥新材料科技有限公司 | Method for preparing sepiolite composite basalt fiber reinforced shape memory polyurethane |
| CN106119746A (en) * | 2016-07-30 | 2016-11-16 | 山西晋投玄武岩开发有限公司 | A kind of corrosion-resistant basalt fibre strengthens copper-base alloy composite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841091A (en) * | 2017-11-03 | 2018-03-27 | 常州通和建筑工程有限公司 | A kind of preparation method of obdurability epoxy fill-sealing materials |
| CN109967918A (en) * | 2017-12-27 | 2019-07-05 | 株式会社神户制钢所 | The submerged arc welding bonded flux of two phase stainless steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108127094B (en) | A kind of non-reacted covering slag of high titanium steel | |
| CN101502871B (en) | Cogged ingot continuous casting crystallizer protecting slag and preparation method thereof | |
| CN101658907B (en) | Protective slag of large-profile round billet continuous-casting crystallizer and method for preparing same | |
| CN107931551B (en) | A kind of bloom middle low carbon steel covering slag and preparation method thereof | |
| CN101433950B (en) | Method for preparing protecting residue from recovery refining slag | |
| CN102888492B (en) | Si-Ca-Al-Mg-RE (rare earth) composite deoxidizer and preparation method thereof | |
| CN101519712A (en) | Ladle refining slag modifier, preparation method and slag modifying method | |
| CN101314200A (en) | High-strength high-ductility fluorine alkalescent sintered flux | |
| CN105642851A (en) | Continuous casting crystallizer covering slag for large slab medium-carbon steel and preparation method thereof | |
| CN110315039A (en) | A kind of application of Mold Powder Without Fluorine in Ti-containing steel continuous casting | |
| CN108103405A (en) | A kind of high-strength fireproof anti-seismic steel bar and its low cost preparation method | |
| CN106736042A (en) | A kind of preparation method of high tenacity Anti-moisture-absorbing sintered flux | |
| CN105522130B (en) | A kind of medium carbon steel chamfering copper coin continuous crystallizer protecting slag and preparation method thereof | |
| CN102181590B (en) | Slagging and antifoaming agent | |
| CN101204727A (en) | Slim slab low carbon steel special for continuous casting crystallizer protected slag and production processes with same | |
| CN102296152A (en) | Novel converter steelmaking dephosphorization agent and preparation method thereof | |
| CN102453788A (en) | Preparation method of converter steelmaking dephosphorizing agent | |
| CN107297475B (en) | A kind of high alumina steel continuous casting crystallizer Mold Powder Without Fluorine | |
| CN107385311A (en) | The method for improving spheroidal graphite cast-iron melt iron degree of purity | |
| CN100371481C (en) | Method for producing high titanium iron contg. low oxygen and low nitrogen | |
| CN105312523A (en) | Tundish covering agent for non-oriented silicon steel | |
| CN102652989A (en) | Tundish molten steel covering agent for high-cleanness steel pouring and preparation method and application of tundish molten steel covering agent | |
| CN105414505A (en) | Special covering slag for auto sheet CSP sheet billet | |
| CN103159490B (en) | Swinging chute working lining castable of composite material and preparation method of castable | |
| CN107382331A (en) | A kind of anti-slag type tundish paint |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |
|
| WD01 | Invention patent application deemed withdrawn after publication |