CN106893921B - A kind of method of nickel-base alloy electric slag refusion and smelting - Google Patents
A kind of method of nickel-base alloy electric slag refusion and smelting Download PDFInfo
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- CN106893921B CN106893921B CN201710181761.5A CN201710181761A CN106893921B CN 106893921 B CN106893921 B CN 106893921B CN 201710181761 A CN201710181761 A CN 201710181761A CN 106893921 B CN106893921 B CN 106893921B
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- nickel
- base alloy
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- steel billet
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
Abstract
The present invention relates to a kind of methods of nickel-base alloy electric slag refusion and smelting, it includes the following steps:Select nickel-base alloy that steel billet is made；Two blocks of nickel-base alloy steel billets of 2200~2250mm of cut growth, wide 100~250mm；Titanium plate is processed into 40-105mm of width, the titanium plate of 300 ± 50mm of length is added among two blocks of nickel-base alloy steel billets, then carries out detonation front weldering；The width of titanium plate is less than nickel-base alloy steel billet；Electroslag remelting, fritting slag system is with ternary slag CaF2、CaO、Al2O3Based on, MgO is added, then add TiO2, manufacture new fritting slag system；New pre-melted slag additional amount is that per kilogram nickel-base alloy steel billet adds 0.045 ~ 0.065kg.Alloying component is more uniform after the scaling loss of titanium elements is less in the method esr process of book nickel-base alloy electric slag refusion and smelting, the Al constituent content in ingot casting is less and remelting.
Description
Technical field
The present invention relates to a kind of methods of electric slag refusion and smelting, the especially method of nickel-base alloy electric slag refusion and smelting.
Background technique
Electroslag remelting is a kind of technique that the steel to the production of general smelting process is refined again, its working principle is that electric current
High-temperature heating consutrode is generated by slag bath, consutrode top, which is gradually melted, forms metal drop, falls off across slag bath, warp
The cooling solidification in metal bath of water mold forms ingot casting.Electroslag remelting resultant metal is pure, dense structure, ingredient are equal
Even, any surface finish, service performance are excellent.
Nickel-base alloy designed by the present invention is full austenite iron-nickel-chromium of the titaniferous containing aluminium, at the same be added to Cu and
Mo has antiacid and caustic corrosion performance under oxidation and reducing environment, be mainly used in sulfuric acid washing station-service obtain heating tube and
The fields such as container, the pipe-line system of marine prods, the air heat exchanger of petroleum industry, food and chemical engineering industry.This alloy is
Typical high titanium alloy containing aluminium profiles, when electroslag remelting titanium elements can a large amount of scaling loss, up to 20% ~ 40%, the average recovery rate of titanium is low, and
And cause melted ingot site component is seriously uneven up and down, such as blank of 2200~2250mm, the Al element phase at both ends in ingot casting
Poor 0.11%.
Summary of the invention
In order to overcome existing nickel-base alloy electric slag refusion and smelting method above-mentioned deficiency, the present invention provides a kind of electroslag weight
The more uniform Ni-based conjunction of alloying component after the scaling loss of titanium elements is less during molten, the Al constituent content in ingot casting is less and remelting
The method of golden electric slag refusion and smelting.
Basic conception of the invention is by being made into the base for welding to steel billet cutting processing and surface grinding processing
Titanium plate is added in two blocks of blanks of welding, and weld blank in welding, on the one hand prevents from falling off, on the other hand prevent by material
In the scaling loss of electroslag at the beginning, while to the fritting slag ingredient and electroslag remelting process of selection, titanium elements in reflow process are solved
Burning problems, realize the electric slag refusion and smelting technique of this iron nickel base alloy.
The method of this nickel-base alloy electric slag refusion and smelting be it is following successively the step of:
Select nickel-base alloy that the steel billet of 150 ~ 250mm of thickness, the weight percent of nickel-base alloy ingredient is made are as follows:
0 < C≤0.075%, 0 < Si≤1.00%, 0 < Mn≤1.50%, P≤0.050%,
S≤0.050%, 0 < Al≤0.20%, Cr 18.00 ~ 25.50%, Ni 30 ~ 46%,
Mo 2.0 ~ 3.5%, Cu 1.0 ~ 3.0%, Ti 0.6 ~ 1.5%, remaining is Fe and inevitable impurity.
The nickel-base alloy steel billet of 2200~2250mm of steel billet cut growth, wide 100~250mm, nickel-base alloy steel billet
Be equipped with chamfering (45 ° of chamfering, side length 10mm), nickel-base alloy steel billet the inner surface and the outer surface carry out polishing processing (roughness Ra 2 ~
10 μm) two blocks of nickel-base alloy steel billets are made altogether.
Titanium plate is processed into 40-105mm of width, the titanium plate of 1.0 ± 0.2mm of length 300 ± 50mm thickness is added in two pieces
Among nickel-base alloy steel billet, then detonation front weldering is carried out to nickel-base alloy steel billet, is clipped in titanium plate among nickel-base alloy steel billet；And
The width of titanium plate is less than the 70mm of nickel-base alloy steel billet blank width.
Electroslag remelting, fritting slag system is with ternary slag CaF2 55 ± 3 parts by weight, 22 ± 2 parts by weight of CaO and Al2O3 20
Based on ± 2 parts by weight, 3 ± 0.5 parts by weight of MgO are added, then add the TiO of above-mentioned four kinds total quantity of slag 7.8% ± 0.5%2, system
Make new fritting slag system.New pre-melted slag (including TiO2) additional amount be per kilogram nickel-base alloy steel billet add 0.045 ~
0.065kg。
The method of above-mentioned nickel-base alloy electric slag refusion and smelting, steps characteristic is:When electroslag remelting, voltage 40 ~
50V, 7800 ~ 8000A of electric current, set molten 3.5 ~ 4.5kg/min of speed, and slag resistance swings 0.25 ~ 0.35m Ω.
Beneficial effects of the present invention
According to the method provided by the invention, the burning problems of titanium elements in esr process are solved, while reducing casting
Al constituent content 20% ~ 30% in ingot realizes the electric slag refusion and smelting technique of this nickel-base alloy.
Detailed description of the invention
Fig. 1 is the end view that titanium plate is clipped between two blocks of nickel-base alloy steel billets.
1-nickel-base alloy steel billet, 2-titanium plates, 3-outer chamfers, 4-inner chamfers.
Specific embodiment
Below with reference to examples and drawings, the present invention is described in detail, and a specific embodiment of the invention is not limited to
Following embodiments.
Embodiment one
The method of the nickel-base alloy electric slag refusion and smelting of the present embodiment be it is following successively the step of:
Select nickel-base alloy that the steel billet of thick 220mm, the weight percent of nickel-base alloy ingredient is made are as follows:
C:0.009%, Si:0.23%, Mn:0.43%, P:0.015%, S:0.001%,
Al:0.18%, Cr:23.23%, Ni:39.16%, Mo:2.87%, Cu:2.05%,
Ti:0.83%, remaining is Fe and inevitable impurity.
Steel billet cut growth 2210mm, wide 220mm, 1 two pieces of nickel-base alloy steel billet of high 220mm, Nickel-Based Steel
Base 1 is equipped with outer chamfer 3 and inner chamfer 4, and (45 ° of chamfering, 3 side length 10mm of outer chamfer, inner chamfer 4 are that two nickel-base alloy steel billets 1 are opposite
Chamfering, two side length 15mm), electrode surface carries out polishing processing, 4.35 μm of roughness Ra.
Titanium plate is processed into width 100mm, the titanium plate 2 of length 300mm thickness 1.0mm is added in two blocks of nickel-base alloy steel billets
Among 1, then two blocks of nickel-base alloy steel billets 1 are welded, is clipped in titanium plate 2 among nickel-base alloy steel billet 1, sees Fig. 1.
Electroslag remelting, the CaF that fritting slag system is 55%2, 22% CaO, 20% Al2O3, 3% MgO, pre-melted slag be added
Amount is 41.72kg, and the TiO of 3.25kg is added in pre-melted slag2 .The voltage 46V of electroslag remelting, electric current 7900A set molten speed
4.0kg/min, slag resistance swing 0.3m Ω.
It is 0.16% that ingot casting Ti constituent content, which is 0.83%, Al constituent content, after electroslag remelting in the present embodiment, realizes electricity
The purpose of slag remelting guarantor's titanium control aluminium.
Embodiment two
The method of the nickel-base alloy electric slag refusion and smelting of the present embodiment be it is following successively the step of:
Select nickel-base alloy that the steel billet of thick 220mm, the weight percent of nickel-base alloy ingredient is made are as follows:
C:0.010%, Si:0.25%, Mn:0.38%, P:0.010%, S:0.001%,
Al:0.20%, Cr:23.12%, Ni:40.23%, Mo:2.96%, Cu:2.25%,
Ti:0.87%, remaining is Fe and inevitable impurity.
Steel billet cut growth 2210mm, wide 110mm, 1 two pieces of nickel-base alloy steel billet of high 220mm, Nickel-Based Steel
Base 1 is equipped with outer chamfer 3 and inner chamfer 4, and (45 ° of chamfering, 3 side length 10mm of outer chamfer, inner chamfer 4 are that two nickel-base alloy steel billets 1 are opposite
Chamfering, two side length 15mm), electrode surface carries out polishing processing, 5.21 μm of roughness Ra.
Titanium plate is processed into width 40mm, the titanium plate 2 of length 300mm thickness 1.0mm is added in two blocks of nickel-base alloy steel billets 1
Centre, then two blocks of nickel-base alloy steel billets 1 are welded, it is clipped in titanium plate 2 among nickel-base alloy steel billet 1, referring to Fig. 1.
Electroslag remelting, the CaF that fritting slag system is 55%2, 22% CaO, 20% Al2O3, 3% MgO, pre-melted slag be added
Amount is 20.86kg, and TiO is added in pre-melted slag2 1.63kg.Electroslag remelting process parameter is voltage 45V, electric current 7850A, setting
Molten speed 3.8kg/min, slag resistance swing 0.3m Ω.
It is 0.17% that ingot casting Ti constituent content, which is 0.87%, Al amount of element, after the present embodiment electroslag remelting, realizes electroslag weight
The molten purpose for protecting titanium control aluminium.
Claims (2)
1. a kind of method of nickel-base alloy electric slag refusion and smelting, it include the steps that it is following successively:
I selects nickel-base alloy that the steel billet of 150 ~ 250mm of thickness, the weight percent of nickel-base alloy ingredient is made are as follows:
0 < C≤0.075%, 0 < Si≤1.00%, 0 < Mn≤1.50%, P≤0.050%,
S≤0.050%, 0 < Al≤0.20%, Cr 18.00 ~ 25.50%, Ni 30 ~ 46%,
Mo 2.0 ~ 3.5%, Cu 1.0 ~ 3.0%, Ti 0.6 ~ 1.5%, remaining is Fe and inevitable impurity；
The nickel-base alloy steel billet of 2200~2250mm of II cut growth, wide 100~250mm, nickel-base alloy steel billet has chamfering, Ni-based
Alloy billet the inner surface and the outer surface carries out polishing processing, makes two blocks of nickel-base alloy steel billets；
Titanium plate is processed into 40-105mm of width by III, the titanium plate of 1.0 ± 0.2mm of length 300 ± 50mm thickness, be added in two pieces it is Ni-based
Among alloy billet, then detonation front weldering is carried out to nickel-base alloy steel billet, is clipped in titanium plate among nickel-base alloy steel billet；And titanium plate
Width be less than nickel-base alloy steel billet width 70mm；
IV electroslag remelting, fritting slag system is with ternary slag CaF2 55 ± 3 parts by weight, 22 ± 2 parts by weight of CaO and Al2O320-22 weights
Based on measuring part, 2.5 parts by weight of MgO are added, then add the TiO of above-mentioned four kinds total quantity of slag 8.3%2, new fritting slag system is manufactured,
New pre-melted slag additional amount is that per kilogram nickel-base alloy steel billet adds 0.045 ~ 0.065kg.
2. a kind of method of nickel-base alloy electric slag refusion and smelting according to claim 1, steps characteristic is: in IV electricity
When slag remelting, 40 ~ 50V of voltage, 7800 ~ 8000A of electric current set molten 3.5 ~ 4.5kg/min of speed, and slag resistance swings 0.25 ~ 0.35m
Ω。
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| CN108715939A (en) * | 2018-07-06 | 2018-10-30 | 抚顺特殊钢股份有限公司 | A kind of electric slag refusion and smelting technique of the N06625 alloys of high-purity segregation-free |
| CN110331301B (en) * | 2019-06-25 | 2021-03-09 | 河钢股份有限公司 | Method for remelting hastelloy by electroslag |
| CN110938745A (en) * | 2019-11-19 | 2020-03-31 | 河南中原特钢装备制造有限公司 | 825 nickel-based alloy electroslag remelting slag system and preparation method thereof |
| CN110846515A (en) * | 2019-11-21 | 2020-02-28 | 重庆材料研究院有限公司 | Preparation method of nickel-based alloy 690 with ultralow gas content |
| CN111705219B (en) * | 2020-06-30 | 2022-03-01 | 重庆钢铁研究所有限公司 | Slag system for electroslag remelting high-titanium high-silicon stainless steel and preparation method thereof |
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| JPH0680178B2 (en) * | 1985-06-13 | 1994-10-12 | 株式会社神戸製鋼所 | Flax for remelting electroslag |
| US6110422A (en) * | 1998-07-24 | 2000-08-29 | Inco Alloys International, Inc. | Ductile nickel-iron-chromium alloy |
| CN101736164A (en) * | 2008-11-14 | 2010-06-16 | 沈阳科金特种材料有限公司 | Electroslag remelting high-Ti low-Al alloy component control method |
| CN102433447A (en) * | 2011-11-25 | 2012-05-02 | 山西太钢不锈钢股份有限公司 | Slag system for electro-slag re-melted high temperature alloy and using method for slag system |
| CN102719683A (en) * | 2012-06-29 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Method for melting nickel-base high temperature alloy with electro-slag furnace |
| CN104212977B (en) * | 2014-09-15 | 2016-03-23 | 洛阳双瑞特种装备有限公司 | A kind of containing Ti non-corrosive metal stripping electroslag remelting plate blank Ti element control method |
| CN105316487A (en) * | 2015-04-10 | 2016-02-10 | 东北大学 | Slag system for electroslag-remelted high-Ti and low-Al high-temperature alloy and using method of slag system |
| CN104962836A (en) * | 2015-06-05 | 2015-10-07 | 山西太钢不锈钢股份有限公司 | Corrosion-resistance iron-based austenite oil well pipe and manufacturing method thereof |
| CN105132701A (en) * | 2015-08-17 | 2015-12-09 | 东北大学 | Slag system used for preparing nickel base alloy through electroslag remelting and use method of slag system |
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