CN110014248A - A kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire - Google Patents
A kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire Download PDFInfo
- Publication number
- CN110014248A CN110014248A CN201910406769.6A CN201910406769A CN110014248A CN 110014248 A CN110014248 A CN 110014248A CN 201910406769 A CN201910406769 A CN 201910406769A CN 110014248 A CN110014248 A CN 110014248A
- Authority
- CN
- China
- Prior art keywords
- welding wire
- temperature
- resistant
- based high
- preparation
- 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.)
- Withdrawn
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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
- B23K35/304—Ni as the principal constituent with Cr as the next major constituent
-
- 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
Abstract
The invention belongs to field of welding material, more particularly to a kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire, include the following steps: (1) in proportion with original, wherein chromium and part of nickel are prepared in the form of nickel chromium triangle intermediate alloy, vaccum sensitive stove is added in other raw materials in addition to titanium, chromium and part of nickel, packet BOTTOM ARGON BLOWING all melts to raw material, starts packet top blowing oxygen；(2) after packet top blowing oxygen 5-10min, nickel chromium triangle intermediate alloy is added, is allowed to melting dispersion, C content stops oxygen blast when being down to 0.03% or less, is changed to Bao Ding and packet bottom Argon simultaneously；(3) packet BOTTOM ARGON BLOWING is kept, ferrosilicon, aluminium block deoxidation are added into ladle, and lime, fluorite slag making, desulfurization is added；(4) melt is cast into alloy pig, anneals to alloy pig；(5) alloy pig after annealing is forged into alloy preform at 1100-1200 DEG C, is rolled into wire rod；(6) oxide skin and rust that wire rod surface is removed by pickling, reconditioning, anneal to wire rod, are drawn into welding wire；(7) welding wire is annealed.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of preparation side of Ni-based high-temperature-resistant and anti-corrosion welding wire
Method.
Background technique
China Green economic development be unable to do without energy-saving and emission-reduction and the improvement to environment, at present for industrial waste, city rubbish
Poisonous and hazardous substance processing is adulterated in rubbish, rural area waste and various wastes and mostly uses burning mode, and waste is innoxious
While can also will burning generate thermal energy be used.In burning disposal, incinerator is key equipment, it is a kind of will to give up
Gas, waste liquid, solid waste fluid fuel, medical waste, life waste product, animal carcass etc. carry out high temperature incineration, reach quantization number
A kind of environmental protection equipment for reducing or reducing, while the thermal energy of medium can also be burned using part, incinerator needs at high temperature
With certain anti-oxidant and corrosion resistance.Domestic welding wire rate of corrosion >=0.2mm/m under hot environment at present, equipment is more
It is short to change the period, not only results in waste of resources, also to expend a large amount of manpower and material resources, does not meet the trend of sustainable development.
Therefore, it is necessary to research and develop a kind of welding wire at high temperature with good corrosion resistance, incinerator is fundamentally improved
High-temperature behavior prolongs the service life, and contributes for energy-saving and emission-reduction.
Summary of the invention
For the higher problem of corrosion rate under existing welding wire high temperature, the invention discloses a kind of Ni-based high-temperature-resistant and anti-corrosions
The preparation method of welding wire, prepared welding wire have lower corrosion rate under the high temperature conditions, have good high temperature resistant anti-
Corrosive nature.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire, includes the following steps:
(1) prepare raw material in proportion, wherein chromium and part of nickel are prepared in the form of nickel chromium triangle intermediate alloy, will except titanium, chromium and
Other raw materials other than part of nickel are added to melting in vaccum sensitive stove, are blown into argon gas from ladle bottom and are de-gassed and stir,
After raw material all melting, start to be blown into oxygen decarburization at the top of ladle；
(2) after packet top blowing oxygen 20-30min, titanium and nickel chromium triangle intermediate alloy is added, melting dispersion is allowed to, when C content is reduced to
Stop oxygen blast when 0.03% or less, be changed at the top and bottom of ladle while being blown into argon gas；
(3) packet BOTTOM ARGON BLOWING is kept, ferrosilicon, aluminium block progress deoxidation is added into ladle, and lime, fluorite slag making is added, takes off
Sulphur；
(4) melt is cast into alloy pig, then under inert gas or vacuum condition, alloy pig is carried out at annealing
Reason；
(5) alloy pig after annealing is forged into alloy preform at 1100-1200 DEG C, is then rolled into wire rod；
(6) oxide skin and rust that wire rod surface is removed by pickling, reconditioning, then in inert gas or vacuum condition
Under, wire rod is made annealing treatment, drawing is then carried out, obtains welding wire；
(7) then welding wire is made annealing treatment under inert gas or vacuum condition.
Preferably, the mass percentage of nickel is 60-65% in nickel chromium triangle intermediate alloy in above-mentioned steps (1).
Preferably, above-mentioned packet top blowing oxygen rate is melt 200-250L/min per ton.
Preferably, above-mentioned packet top blast argon rate is melt 250-300L/min per ton, the rate of packet BOTTOM ARGON BLOWING is per ton
Melt 8-15L/min, the rate of the packet top blast argon are greater than the rate of packet top blowing oxygen.
Preferably, the temperature made annealing treatment in above-mentioned steps (4) is 800-900 DEG C, time 3-5h.
Preferably, the temperature made annealing treatment in above-mentioned steps (6) is 650-720 DEG C, time 2-4h.
Preferably, the temperature made annealing treatment in above-mentioned steps (7) is 550-630 DEG C, time 4-6h.
Preferably, above-mentioned welding wire is grouped as by each group of following weight percent: Cr 18-23%, Fe 4.0-
7.0%, Ti 2.5-3.5%, Mn 2.0-4.0%, Nb 0.5-1.0%, Si 0.1-0.5%, Ce 0.1-0.5%, C≤
0.03%, O≤0.02%, P≤0.03%, S≤0.02%, remaining is Ni.
Preferably, above-mentioned welding wire is grouped as by each group of following weight percent: Cr 18-20%, Fe 6.0-
7.0%, Ti 2.5-3.5%, Mn 2.0-3.0%, Nb 0.5-1.0%, Si0.1-0.3%, Ce 0.1-0.35%, C≤
0.03%, O≤0.02%, P≤0.03%, S≤0.02%, remaining is Ni.
Preferably, above-mentioned welding wire is grouped as by each group of following weight percent: Cr 18.5-19.5%, Fe 6.5-
7.0%, Ti2.5-3.0%, Mn 2.0-2.5%, Nb 0.6-0.8%, Si0.1-0.2%, Ce 0.2-0.3%, C≤
0.03%, O≤0.02%, P≤0.03%, S≤0.02%, remaining is Ni.
The present invention have it is following the utility model has the advantages that (1) the application after the packet top blowing oxygen decarburization for carrying out a period of time again
Chromium and remaining nickel are added in the form of nichrome, chromium can be made to be dispersed in system, more efficiently be played solid solution
Reinforcing and passivation, improve the corrosion resisting property and high temperature oxidation resistance of alloy, and the present invention is to contain 60-65wt% nickel
Nickel chromium triangle intermediate alloy is as nickel source, it is demonstrated experimentally that the corrosion resistance for adding the obtained alloy of nickel chromium triangle intermediate alloy of the nickel content is excellent
In other nickel contents；
(2) the application passes through packet top blowing oxygen strict control C content 0.03% hereinafter, it is possible to prevente effectively from because of C and Cr shape
Mechanical property, antioxygenic property and the corrosion resistance of welding wire are influenced at carbide, lower C content can also effectively reduce intergranular
The generation of corrosion；
(3) Ti and Nb can not only form the stable intermetallic compound of coherence with Ni, greatly improve the heat resistance of welding wire,
So that welding wire is still able to maintain higher intensity at high temperature, and is conducive to inhibit the adverse effect of C, to help to improve resistance to
Corrosion；
(4) Mn added by can largely dissolve in Ni-Cr alloy, can refine crystal grain, improve processing performance, while still
Preferable S, O, C scavenger, added Ce help to purify melt, refine crystal grain, improve on the whole welding wire intensity and
High temperature corrosion resistance；
(5) annealing temperature in step (4) is set as 800-900 DEG C, and the time is set as 3-5h, and higher annealing temperature can
So that alloy pig is recrystallized, hardness is reduced, improves processing performance, the annealing temperature in step (6) is set as 650-720
DEG C, the time is set as 2-4h, helps to refine crystal grain, eliminates the stress that rolling generates, and increases toughness, avoids because of annealing temperature mistake
High and crystal grain is caused to increase, the annealing temperature in step (7) is set as 550-630 DEG C, and the time is set as 4-6h, lower temperature
The stress that drawing generation can be eliminated, keeps alloy structure more uniform, improves toughness；
(6) by synergistic effect between various elements added by the application, and cooperate the technological parameter of each processing stage,
Make prepared welding wire that there is good high-temperature-resistant and anti-corrosion performance, the corrosion rate under high temperature reaches 0.04mm/m.
Specific embodiment
Presently in connection with embodiment, the present invention is described in further detail.
The preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire, includes the following steps:
(1) prepare raw material in proportion, wherein chromium and part of nickel are prepared in the form of nickel chromium triangle intermediate alloy, will except titanium, chromium and
Other raw materials other than part of nickel are added to melting in vaccum sensitive stove, are blown into argon gas from ladle bottom and are de-gassed and stir,
After raw material all melting, start to be blown into oxygen decarburization at the top of ladle；
(2) after packet top blowing oxygen 20-30min, titanium and nickel chromium triangle intermediate alloy is added, melting dispersion is allowed to, when C content is reduced to
Stop oxygen blast when 0.03% or less, be changed at the top and bottom of ladle while being blown into argon gas；
(3) packet BOTTOM ARGON BLOWING is kept, ferrosilicon, aluminium block progress deoxidation is added into ladle, and lime, fluorite slag making is added, takes off
Sulphur；
(4) melt is cast into alloy pig, then under inert gas or vacuum condition, alloy pig is carried out at annealing
Reason；
(5) alloy pig after annealing is forged into alloy preform at 1100-1200 DEG C, is then rolled into wire rod；
(6) oxide skin and rust that wire rod surface is removed by pickling, reconditioning, then in inert gas or vacuum condition
Under, wire rod is made annealing treatment, drawing is then carried out, obtains welding wire；
(7) then welding wire is made annealing treatment under inert gas or vacuum condition.
Wherein, the processing time of step (3) is 10-20min.
The each component content and conditional parameter of embodiment 1-5 and comparative example 1-11 is shown in Tables 1 and 2.
Table 1
Table 2
Comparative example 12 is substantially the same manner as Example 5, the difference is that, all raw materials are and are added together in comparative example 12
Melting is carried out in vaccum sensitive stove.
Comparative example 13 is substantially the same manner as Example 5, the difference is that, in comparative example 13 Ti be first and other raw materials together
It is added.
Comparative example 14 is substantially the same manner as Example 5, the difference is that, it is added after only having Ti to be in comparative example 14.
Comparative example 15 is substantially the same manner as Example 5, the difference is that, in comparative example 15 in nickel chromium triangle intermediate alloy be added
The mass percentage of nickel is 55%.
Comparative example 16 is substantially the same manner as Example 5, the difference is that, in comparative example 16 in nickel chromium triangle intermediate alloy be added
The mass percentage of nickel is 70%.
The mechanical property of welding wire prepared by embodiment 1-5 and comparative example 1-16 is shown in Table 3.
Table 3
The welding wire prepared by embodiment 1-5 and comparative example 1-16 in the common stainless steel surface prepares coating of incinerator,
The properties of prepared coating are shown in Table 4.
Table 4
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire, characterized by the following steps:
(1) raw material is prepared in proportion, and wherein chromium and part of nickel are prepared in the form of nickel chromium triangle intermediate alloy, will remove titanium, chromium and part
Other raw materials other than nickel are added to melting in vaccum sensitive stove, are blown into argon gas from ladle bottom and are de-gassed and stir, to original
Material all after melting, starts to be blown into oxygen decarburization at the top of ladle；
(2) after packet top blowing oxygen 20-30min, titanium and nickel chromium triangle intermediate alloy is added, melting dispersion is allowed to, when C content is reduced to
Stop oxygen blast when 0.03% or less, be changed at the top and bottom of ladle while being blown into argon gas；
(3) packet BOTTOM ARGON BLOWING is kept, ferrosilicon is added into ladle, aluminium block carries out deoxidation, and lime, fluorite slag making, desulfurization is added；
(4) melt is cast into alloy pig, then under inert gas or vacuum condition, alloy pig is made annealing treatment；
(5) alloy pig after annealing is forged into alloy preform at 1100-1200 DEG C, is then rolled into wire rod；
(6) oxide skin and rust that wire rod surface is removed by pickling, reconditioning, then under inert gas or vacuum condition,
Wire rod is made annealing treatment, drawing is then carried out, obtains welding wire；
(7) then welding wire is made annealing treatment under inert gas or vacuum condition.
2. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as described in claim 1, it is characterised in that: in the step (1)
Nickel chromium triangle intermediate alloy in nickel mass percentage be 60-65%.
3. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as described in claim 1, it is characterised in that: the packet top blowing oxygen speed
Rate is melt 200-250L/min per ton.
4. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as described in claim 1, it is characterised in that: the packet top blast argon speed
Rate is melt 250-300L/min per ton, and the rate of packet BOTTOM ARGON BLOWING is melt 8-15L/min per ton, the rate of the packet top blast argon
Greater than the rate of packet top blowing oxygen.
5. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as described in claim 1, it is characterised in that: in the step (4)
The temperature of annealing is 800-900 DEG C, time 3-5h.
6. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as described in claim 1, it is characterised in that: in the step (6)
The temperature of annealing is 650-720 DEG C, time 2-4h.
7. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as described in claim 1, it is characterised in that: in the step (7)
The temperature of annealing is 550-630 DEG C, time 4-6h.
8. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as described in claim any one of 1-6, it is characterised in that: the weldering
Silk is grouped as by each group of following weight percent: Cr 18-23%, Fe 4.0-7.0%, Ti 2.5-3.5%, Mn 2.0-
4.0%, Nb 0.5-1.0%, Si 0.1-0.5%, Ce 0.1-0.5%, C≤0.03%, O≤0.02%, P≤0.03%, S
≤ 0.02%, remaining is Ni.
9. the preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire as claimed in claim 8, it is characterised in that: the welding wire is by as follows
The each group of weight percent is grouped as: Cr 18-20%, Fe 6.0-7.0%, Ti 2.5-3.5%, Mn 2.0-3.0%, Nb
0.5-1.0%, Si0.1-0.3%, Ce 0.1-0.35%, C≤0.03%, O≤0.02%, P≤0.03%, S≤0.02%,
Remaining is Ni.
10. Ni-based high-temperature-resistant and anti-corrosion welding wire as claimed in claim 9, it is characterised in that: the welding wire is by following weight hundred
The each group of ratio is divided to be grouped as: Cr 18.5-19.5%, Fe 6.5-7.0%, Ti 2.5-3.0%, Mn 2.0-2.5%, Nb
0.6-0.8%, Si0.1-0.2%, Ce 0.2-0.3%, C≤0.03%, O≤0.02%, P≤0.03%, S≤0.02%,
Remaining is Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406769.6A CN110014248A (en) | 2019-05-15 | 2019-05-15 | A kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406769.6A CN110014248A (en) | 2019-05-15 | 2019-05-15 | A kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110014248A true CN110014248A (en) | 2019-07-16 |
Family
ID=67193799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910406769.6A Withdrawn CN110014248A (en) | 2019-05-15 | 2019-05-15 | A kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110014248A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778256A (en) * | 1970-12-28 | 1973-12-11 | Hitachi Ltd | Heat-resistant alloy for a combustion liner of a gas turbine |
| CN87102645A (en) * | 1986-03-18 | 1987-10-28 | 法国电气公司 | The improvement of austenite nickel-chromium-ferro alloy structural parts |
| CN1039067A (en) * | 1988-12-13 | 1990-01-24 | 冶金工业部钢铁研究总院 | cobalt-free nickel-based alloy |
| US20030118469A1 (en) * | 2001-12-21 | 2003-06-26 | Hitachi Metals, Ltd. | Ni-based alloy improved in oxidation-resistance, high temperature strength and hot workability |
| CN101565801A (en) * | 2008-04-22 | 2009-10-28 | 宝山钢铁股份有限公司 | High-carbon-chromium bearing steel and manufacture method thereof |
| CN101954548A (en) * | 2010-04-20 | 2011-01-26 | 无锡南理工科技发展有限公司 | Ultra-low-carbon rare earth stainless steel welding wire and preparation method thereof |
| CN102191426A (en) * | 2011-04-14 | 2011-09-21 | 山西太钢不锈钢股份有限公司 | Stainless steel wire for welding and method for smelting steel for wire |
| CN102618795A (en) * | 2012-03-27 | 2012-08-01 | 中信重工机械股份有限公司 | Smelting process of nitrogenous high alloy heat-resistant steel ZG3Cr24Ni7N |
| CN102943148A (en) * | 2012-11-30 | 2013-02-27 | 张家港浦项不锈钢有限公司 | Method for producing high-purity stainless steel |
| CN103074551A (en) * | 2013-01-14 | 2013-05-01 | 浙江大学 | Two-phase stainless steel alloy and preparation method thereof |
| CN103717767A (en) * | 2011-08-09 | 2014-04-09 | 新日铁住金株式会社 | Ni-based heat-resistant alloy |
| CN103938111A (en) * | 2014-05-12 | 2014-07-23 | 盐城市鑫洋电热材料有限公司 | Method for reducing non-metallic inclusions in iron-chromium-aluminum electrothermal alloy |
| CN106521355A (en) * | 2016-11-25 | 2017-03-22 | 四川六合锻造股份有限公司 | Double-phase stainless steel as well as preparation method and application thereof |
| CN107937756A (en) * | 2017-05-03 | 2018-04-20 | 四川六合锻造股份有限公司 | Ni Cr based precipitation hardening type wrought superalloy materials and preparation method thereof |
| CN108504819A (en) * | 2018-04-26 | 2018-09-07 | 成都浩生钢铁有限公司 | A kind of AOD+VOD duplexs smelt the technique and device of humble ferrochrome |
-
2019
- 2019-05-15 CN CN201910406769.6A patent/CN110014248A/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778256A (en) * | 1970-12-28 | 1973-12-11 | Hitachi Ltd | Heat-resistant alloy for a combustion liner of a gas turbine |
| CN87102645A (en) * | 1986-03-18 | 1987-10-28 | 法国电气公司 | The improvement of austenite nickel-chromium-ferro alloy structural parts |
| CN1039067A (en) * | 1988-12-13 | 1990-01-24 | 冶金工业部钢铁研究总院 | cobalt-free nickel-based alloy |
| US20030118469A1 (en) * | 2001-12-21 | 2003-06-26 | Hitachi Metals, Ltd. | Ni-based alloy improved in oxidation-resistance, high temperature strength and hot workability |
| CN101565801A (en) * | 2008-04-22 | 2009-10-28 | 宝山钢铁股份有限公司 | High-carbon-chromium bearing steel and manufacture method thereof |
| CN101954548A (en) * | 2010-04-20 | 2011-01-26 | 无锡南理工科技发展有限公司 | Ultra-low-carbon rare earth stainless steel welding wire and preparation method thereof |
| CN102191426A (en) * | 2011-04-14 | 2011-09-21 | 山西太钢不锈钢股份有限公司 | Stainless steel wire for welding and method for smelting steel for wire |
| CN103717767A (en) * | 2011-08-09 | 2014-04-09 | 新日铁住金株式会社 | Ni-based heat-resistant alloy |
| CN102618795A (en) * | 2012-03-27 | 2012-08-01 | 中信重工机械股份有限公司 | Smelting process of nitrogenous high alloy heat-resistant steel ZG3Cr24Ni7N |
| CN102943148A (en) * | 2012-11-30 | 2013-02-27 | 张家港浦项不锈钢有限公司 | Method for producing high-purity stainless steel |
| CN103074551A (en) * | 2013-01-14 | 2013-05-01 | 浙江大学 | Two-phase stainless steel alloy and preparation method thereof |
| CN103938111A (en) * | 2014-05-12 | 2014-07-23 | 盐城市鑫洋电热材料有限公司 | Method for reducing non-metallic inclusions in iron-chromium-aluminum electrothermal alloy |
| CN106521355A (en) * | 2016-11-25 | 2017-03-22 | 四川六合锻造股份有限公司 | Double-phase stainless steel as well as preparation method and application thereof |
| CN107937756A (en) * | 2017-05-03 | 2018-04-20 | 四川六合锻造股份有限公司 | Ni Cr based precipitation hardening type wrought superalloy materials and preparation method thereof |
| CN108504819A (en) * | 2018-04-26 | 2018-09-07 | 成都浩生钢铁有限公司 | A kind of AOD+VOD duplexs smelt the technique and device of humble ferrochrome |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100519813C (en) | High-strength toughness cold working die steel and method of producing the same | |
| CN110129622A (en) | Ni-Cr-Fe base sinks into constrictive type wrought superalloy | |
| CN110106378B (en) | Preparation method of nickel-based high-temperature alloy | |
| WO2015192391A1 (en) | Rebar and preparation method thereof | |
| CN105562965A (en) | Method for preparing nickel-based alloy welding wire | |
| CN110093532B (en) | Precipitation strengthening type nickel-based high-chromium high-temperature alloy and preparation method thereof | |
| CN109894770A (en) | Ethane cracking furnace cast tube NiCrNb-Re corrosion-and high-temp-resistant welding wire and preparation method thereof | |
| CN110230004A (en) | One kind austenitic heat-resistance steel containing aluminium and preparation method thereof | |
| SK285355B6 (en) | Method for processing steel slags | |
| CN105479040A (en) | Preparation method of nickel base alloy welding wire high in yield | |
| KR20190134043A (en) | High chromium cast iron with excellent abrasion resistance and corrosion resistance and parts containing the same used for wet type exhaust gas desulfurization equipment of thermoelectric power plant | |
| CN110066957A (en) | Corrosion-resistant super austenitic stainless steel of modified and preparation method thereof | |
| CN108193135A (en) | A kind of Low-carbon High Strength austenitic heat-resistance steel and preparation method thereof | |
| CN110016590B (en) | High-temperature alloy material for aerospace | |
| CN109536844A (en) | A kind of high-temperature resistance die steel and preparation method thereof | |
| CN112877603A (en) | Alloy material for incinerator grate and preparation method thereof | |
| CN106319153B (en) | A kind of AOD smelting processes of stainless steel | |
| CN110014248A (en) | A kind of preparation method of Ni-based high-temperature-resistant and anti-corrosion welding wire | |
| CN100473744C (en) | Method for preparing rare-earth containing high temperature oxidation resistant ferritic stainless steel | |
| CN112553505A (en) | Nickel-based plate and preparation method thereof | |
| CN111172463A (en) | Acid corrosion resistant BGNS440 steel hot-rolled coil and preparation method thereof | |
| CN1093758A (en) | Cast 1300-1350 ℃ of iron-based high temperature steel and founding | |
| WO2023071294A1 (en) | Heat-resistant steel hand welding rod for ultra-supercritical cb2 steel and preparation method therefor | |
| CN104651743A (en) | Multielement composite heat-resistant steel | |
| CN107267778B (en) | A kind of magnesium smelting reduction pot 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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190716 |