CN1404955A - Alloy welding-band for continuous-casting roller build-up welding and production method therof - Google Patents
Alloy welding-band for continuous-casting roller build-up welding and production method therof Download PDFInfo
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- CN1404955A CN1404955A CN 01126778 CN01126778A CN1404955A CN 1404955 A CN1404955 A CN 1404955A CN 01126778 CN01126778 CN 01126778 CN 01126778 A CN01126778 A CN 01126778A CN 1404955 A CN1404955 A CN 1404955A
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Abstract
The present invention provides an alloy welding band for continuous casting roll building-up and its preparation method. Its composition comprises: C 0.03-0.15%, Si 0.2-0.65%, Mn 0.50-1.50%, Ni 0.50-2.50%, Cr 12.0-15.0%, Mo 0.50-1.50%, V 0.10-0.30%, Nb 0.18-0.45%, P is less than or equal to 0.015% and S is less than or equal to 0.010%. It is made up by said materials through the processes of smelting in induction furnace, electric slag remelting, hot-rolling and cold-rolling. The composition of the welding flux matched with the welding band includes: MgO 20-30%, Al2O3 20-30%, CaF2+CaO 10-35%, BaCo3 1-10%, SiO2 1-10%, MnO2 0.5-3%, ZrO2 1-10%, Cr2O3 1-3%, Nb2O5 0.5-2%, V2O5 0.5-2%, Si-Fe 1-5%, Mn-Fe 1-5%, Ti-Fe 0-3% and Ca-Si 0-3%.
Description
Technical field
The present invention relates to a kind of alloy welding, relate in particular to a kind of build-up welding of continuous casting roller alloy welding and production method thereof.
Background technology
The continuous casting roller is the critical component of conticaster; it continuously contacts with the also not solidified high temperature slab in inside; also bear the effect repeatedly of cooling water simultaneously; working condition is very harsh; roll surface is easy to produce cold and hot fatigue crack, oxide etch and wearing and tearing equivalent damage form; serious even cause the roll breakage stopping accident, when the roll surface crackle expands to certain depth, processing must be repaired or scrap to the continuous casting roller.Restrict the key factor of conticaster production operational availability the service life of continuous casting roller often, therefore require the continuous casting roller to have enough elevated temperature strengths, high temperature resistance to oxidation corrosive nature and high temperature abrasion resistance, particularly high cold-resistant thermal fatigue property.
Early stage continuous casting roller adopts the solid forged steel roll of 15CrMo, 20CrMo more, and cold-resistant heat fatigue of solid forged steel roll and high temperature oxidation and corrosion poor-performing are so service life is low.Begin domestic and international large-scale iron and steel enterprise from the eighties and generally adopt the built-up welding composite roll, this composite roll is the working lining at roll body surface overlaying one deck excellent performance, this composite roll can be repaired repeatedly, and the continuous casting roller is improved significantly service life, greatly reduces production cost.
The built-up welding of continuous casting roller has the band utmost point and two kinds of methods of filament.The characteristics of filament built-up welding are that the serialization degree is higher, pipe silk alloy composition is easy to adjust, the pipe silk is simple for production etc., but the composition uniformity of surfacing layer metal is relatively poor, circular spiral built-up welding overlap joint is more, the roll surface fatigue crack is easy to along the overlapping part expansion, and some big section steel works of US and European adopt this method built-up welding.The advantage of strip surfacing is that built-up welding efficient is higher, and is when adopting vertical built-up welding, favourable to suppressing the ring-type crack Propagation, but the alloy welding is by smelting and rolling making, complex process, composition adjustment be difficulty relatively, and Japan, Germany and more domestic big section steel works all adopt this method built-up welding.
The built-up welding of continuous casting roller normally all is to be that martensitic stain less steel is that matrix adds minor N i, Mo alloy with 1Cr13 with welding or Guan Siqi deposited metal, improves its resistance to elevated temperatures.This martensitic stain less steel overlay cladding is compared with the roll body material, though non-oxidizability, wearability, corrosion resistance etc. improve, the cold-and-heat resistent fatigue behaviour still is not ideal enough, causes a service life of continuous casting roller shorter.
Chinese patent CN1209372A provides a kind of build-up welding of continuous casting roller medication core pipe silk, and its principal character is to increase alloying elements such as Ni, Mo, V, W, Nb on the basis of H1Cr13, to improve the anti-wear performance of overlay cladding, compares with solid core welding wire and reduces the wlding cost.But, 1) and medicine core Guan Sizhong microalloy powder distribution is inhomogeneous, easily produces the segregation of overlay cladding composition, causes the roll surface failure damage by local defect; 2) the W element easily causes overlay cladding red hard and bring out the built-up welding crackle, is unfavorable for suppressing the germinating and the expansion of crackle, and the effect of improving the overlay cladding performance is affected; 3) medicine core pipe silk key component is made up of original mineral aggregate and alloy powder, the content of harmful element P, S in the uncontrollable overlay cladding; 4) do not have the coupling solder flux, can't guarantee the bead-welding technology performance.
Summary of the invention
In view of existing situation, the object of the present invention is to provide a kind of alloy welding and production method thereof that build-up welding of continuous casting roller uses that be suitable for good cold-and-heat resistent fatigue behaviour.
Because the ultimate failure of continuous casting roller mainly is due to the fatigue crack, therefore, the key that improves continuous casting roller service life is to improve the performance of overlay cladding, particularly the performance of cold-and-heat resistent fatigue crack.Based on this, technical thought of the present invention is to add alloying elements such as Nb, V on the basis of former 1Cr13NiMo, and suitably improve the content of Mo, by smelting and rolling mill practice making welding, supporting special flux, overlay cladding P, S content have been controlled in strictness, reach the purpose of obvious raising overlay cladding cracking resistance.
Alloy welding of the present invention, its weight percentages is as follows:
C：0.03-0.15％????Si：0.2-0.65％????Mn：0.50-1.50％???Ni：0.50-2.50％
Cr：12.0-15.0％???Mo：0.50-1.50％???V：0.10-0.30％????Nb：0.18-0.45％
P≤0.015％????????S≤0.010％。
Alloy welding production method of the present invention:
By given composition batching, produce hardfacing alloy welding of the present invention through the following technological process of production:
Induction furnace (electric furnace) steel-making → notes ingot → ESR ingot finishing → electroslag remelting → hammer cogging → hot rolling → batch → anneal → cold rolling → shear → deoil
Wherein the cold-rolling process route is: and torrid zone annealing → pickling → finishing → cold rolling cogging → intermediate annealing → pickling → finishing → semi-finished product is rolling → and slitting itemize → recrystallization annealing → pickling → sand milling band steel → finished product is rolling
Composed as follows with the solder flux composition that alloy welding of the present invention is complementary:
MgO：20～30％、Al
2O
3：20～30％、CaF
2+CaO：10～35％、BaCO
3：1～
10％、SiO
2：1～10％、MnO
2：0.5～3％、ZrO
2：1～10％、Cr
2O
3：1～3％、
Nb
2O
5：0.5～2％、V
2O
5：0.5～2％、Si-Fe：1～5％、Mn-Fe：1～5％、
Ti-Fe：0～3％、Ca-Si：0～3％。
Adopt neutral KP1 as binding agent, account for 5～30% of total component.
Among the Mn-Fe Mn greater than 75%, C less than 1%, all the other are Fe; Ti is greater than 60% among the Ti-Fe, and all the other are Fe; Si is greater than 45% among the Si-Fe, and all the other are Fe; Ca is greater than 20% among the Ca-Si, and all the other are Si.
The production method of the solder flux that is complementary with welding of the present invention is:
After each raw material mixing, the damping of adding binding agent is even, carries out roasting and granulation under 800～900 ℃, dries under 300～400 ℃ of temperature before the built-up welding.
The concrete effect of the alloying element that alloy welding of the present invention is added is as follows:
Nb: crystal grain thinning, improve the alloy comprehensive mechanical property, help suppressing crack initiation and expansion.In addition, Nb can consolidate carbon and form carbide, improves the wearability of alloy.
V: crystal grain thinning acts on similar to Nb.V can also improve the quenching degree of alloy, improves alloy corrosion resistance.
Mo: improve the elevated temperature strength of alloy, delay the germinating of crackle.
P, S, Si: content control is lower, to reduce the fragility of overlay cladding, helps delaying the expansion of crackle.
The specific embodiment
Embodiment
Make welding of the present invention and contrast welding respectively by chemical analysis shown in the table 1.
Table 1 welding of the present invention and the chemical analysis and the cold and hot fatigue crack degree of depth (Wt%) that contrast welding
| ?C | ?Si | ?Mn | ?Ni | ?Cr | ?Mo | ?V | ?Nb | ?P | ?S | Maximum crack depth mm | |
| The contrast welding | ?0.11 | ?0.87 | ?2.04 | ?1.75 | ?12.64 | ?0.72 | ?0.027 | ?0.008 | ????15 | ||
| Embodiment 1 | ?0.13 | ?0.57 | ?1.17 | ?1.41 | ?13.24 | ?1.08 | ?0.22 | ?0.19 | ?0.027 | ?0.005 | ????2 |
| Embodiment 2 | ?0.09 | ?0.44 | ?1.35 | ?1.15 | ?13.40 | ?0.98 | ?0.25 | ?0.42 | ?0.023 | ?0.006 | ????1.2 |
| Embodiment 3 | ?0.11 | ?0.35 | ?1.55 | ?2.25 | ?12.80 | ?1.28 | ?0.17 | ?0.32 | ?0.019 | ?0.007 | ????1.6 |
Make welding of the present invention by following process route:
Induction furnace electric furnace steel making → notes ingot → ESR ingot finishing → electroslag remelting → hammer cogging → hot rolling → batch → anneal → cold rolling → shear → deoil
Wherein the cold-rolling process route is: and torrid zone annealing → pickling → finishing → cold rolling cogging → intermediate annealing → pickling → finishing → semi-finished product is rolling → and slitting itemize → recrystallization annealing → pickling → sand milling band steel → finished product is rolling
The appearance and size of the welding of producing by proportioning of the present invention and production method meets the following requirements:
Thickness: 0.4
0 + 0.04Mm, width: 30 50 or 60
0 + 0.2Mm, lateral bending:＜2/1000
The welding smooth surface is smooth, defective such as no greasy dirt, water stain, crackle, layering, oxide skin.
Make the solder flux that is complementary with welding of the present invention by chemical analysis shown in the table 2.
The composition (Wt%) of the solder flux that table 2 and welding of the present invention are complementary
| Solder flux | ??MgO | ??Al 2O 3 | ??CaF 2+ ??CaO | BaCO 3 | ??SiO 2 | ??MoO 2 | ??ZrO 2 | ??Cr 2O 3 | ??Nb 2O 5 | ??V 2O 5 | ??Si-Fe | ??Mn- ??Fe | ??Ti-Fe | ??Ca-Si |
| Embodiment 1 coupling solder flux | ??20 | ??22 | ??30 | 5 | ??6 | ??2 | ??6 | ??1 | ??1 | ??1 | ??1 | ??3 | ??1 | ??1 |
| Embodiment 2 coupling solder flux | ??20 | ??24 | ??32 | 2 | ??6 | ??2 | ??6 | ??0.5 | ??0.5 | ??0.5 | ??1 | ??5 | ??0.5 | ??1 |
| Embodiment 3 coupling solder flux | ??20 | ??28 | ??28 | 6 | ??2 | ??3 | ??6 | ??1.5 | ??1.5 | ??1.5 | ??1 | ??1 | ??0.5 | ??1 |
Wherein binding agent is neutral KP1, accounts for 21% of total component.
Among the Mn-Fe Mn be 87%, C less than 1%, all the other are Fe; Ti is 72% among the Ti-Fe, and all the other are Fe; Si is 65% among the Si-Fe, and all the other are Fe; Ca is 38% among the Ca-Si, and all the other are Si.
The production method of the solder flux that is complementary with welding of the present invention is:
Chemical analysis by each raw material calculates batching, after mixing, adds neutral KP1 as binding agent; damping is even, adopts comminutor to carry out roasting and granulation under 800-900 ℃, guarantees solder flux drying and epigranular; 300-400 ℃ of oven dry down, promptly make solder flux of the present invention before the built-up welding.
With welding of the present invention, solder flux and contrast welding respectively built-up welding melting metal and making the cold and hot fatigue testing specimen that specification is 30mm * 15mm, under the experimental condition shown in the table 4, carry out chilling and shock heating fatigue test 2000 times, the fatigue crack that painted then observation specimen surface and cross section produce.The result shows: the contrast welding overlay cladding of prior art seriously chaps, and welding overlay cladding smooth surface of the present invention, only micro-crack is arranged, and the cold-resistant thermal fatigue property of alloy welding of the present invention significantly improves.Two kinds of mechanical properties that melting metal are shown in Table 3.
Table 3 is melting the mechanical property and the hardness contrast of metal
| ??σ 0.2(MPa) | ????δ(％) | ????ψ(％) | ????HRC | |
| The contrast welding | ????625 | ????18 | ????47 | ????30 |
| Embodiment 1 | ????845 | ????14.7 | ????45 | ????32.9 |
| Embodiment 2 | ????838 | ????15.5 | ????48 | ????32.5 |
| Embodiment 3 | ????855 | ????14.3 | ????43 | ????34.3 |
The cold and hot fatigue test condition of table 4
| Test number (TN) | Test temperature | Heating, cooling cycle | Heating condition |
| 2000 | ?70℃～700℃ | Heating: 14s, cooling: 6s | Voltage 300V, electric current 90A |
Make 5 tons of alloy weldings by chemical analysis of the present invention, be used for the built-up welding of roller in kind.20 on built-up welding segmental arc continuous casting roller in kind uses on the machine altogether, and reached 5000 stoves more than by original average 2500 stoves a service life, and high temperature resistant and cold and hot tired effect is obvious.
Claims (6)
1. build-up welding of continuous casting roller alloy welding, its weight percentages of components is:
C：0.03-0.15％????Si：0.2-0.65％????Mn：0.50-1.50％??Ni：0.50-2.50％
Cr：12.0-15.0％???Mo：0.50-1.50％???V：0.10-0.30％???Nb：0.18-0.45％
P≤0.015％????????S≤0.010％。
2. build-up welding of continuous casting roller as claimed in claim 1 with the process route of the production method of alloy welding is: induction furnace steel-smelting → notes ingot → ESR ingot finishing → electroslag remelting → hammer cogging → hot rolling → batch → anneal → cold rolling → shear → deoil;
Wherein the cold-rolling process route is: and torrid zone annealing → pickling → finishing → cold rolling cogging → intermediate annealing → pickling → finishing → semi-finished product is rolling → and slitting itemize → recrystallization annealing → pickling → sand milling band steel → finished product is rolling.
3. build-up welding of continuous casting roller as claimed in claim 1 with the weight percentages of components of the solder flux that the alloy welding is complementary is:
MgO：20～30％、Al
2O
3：20～30％、CaF
2+CaO：10～35％、
BaCO
3：1～10％、SiO
2：1～10％、MnO
2：0.5～3％、ZrO
2：1～10％、
Cr
2O
3：1～3％、Nb
2O
5：0.5～2％、V
2O
5：0.5～2％、Si-Fe：1～5％、
Mn-Fe：1～5％、Ti-Fe：0～3％、Ca-Si：0～3％。
4. build-up welding of continuous casting roller as claimed in claim 3 is characterized in that with the solder flux that the alloy welding is complementary, and adopts neutral KP1 as binding agent, accounts for 5～30% of total component.
5. build-up welding of continuous casting roller as claimed in claim 3 is characterized in that with the solder flux that the alloy welding is complementary, among the Mn-Fe Mn greater than 75%, C less than 1%, all the other are Fe; Ti is greater than 60% among the Ti-Fe, and all the other are Fe; Si is greater than 45% among the Si-Fe, and all the other are Fe; Ca is greater than 20% among the Ca-Si, and all the other are Si.
6. alloy welding as claimed in claim 1 or 2 can be applicable to build-up welding of continuous casting roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01126778 CN1197679C (en) | 2001-09-17 | 2001-09-17 | Alloy welding-band for continuous-casting roller build-up welding and production method therof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01126778 CN1197679C (en) | 2001-09-17 | 2001-09-17 | Alloy welding-band for continuous-casting roller build-up welding and production method therof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1404955A true CN1404955A (en) | 2003-03-26 |
| CN1197679C CN1197679C (en) | 2005-04-20 |
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ID=4666783
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01126778 Expired - Fee Related CN1197679C (en) | 2001-09-17 | 2001-09-17 | Alloy welding-band for continuous-casting roller build-up welding and production method therof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1197679C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062533B (en) * | 2006-04-28 | 2011-12-14 | 北京中煤大田耐磨材料有限公司 | Abrasion-proof pile-up welding flux-cored wire for roll squeezer |
| CN101505910B (en) * | 2006-08-09 | 2012-01-04 | Ing商事株式会社 | Iron-based corrosion resistant wear resistant alloy and deposit welding material for obtaining the alloy |
| CN102896458A (en) * | 2011-07-26 | 2013-01-30 | 上海宝钢设备检修有限公司 | Surface treatment method for loop back rolls of hot continuous rolling units |
| CN106425166A (en) * | 2016-12-15 | 2017-02-22 | 昆山京群焊材科技有限公司 | Nb-containing stainless steel soldering strip and soldering flux for monolayer strip electro-slag surfacing |
| CN106624470A (en) * | 2016-12-15 | 2017-05-10 | 昆山京群焊材科技有限公司 | Preparation method of welding strips and welding fluxes for Nb-containing stainless steel strip electrode electroslag surfacing |
| CN107097013A (en) * | 2017-04-05 | 2017-08-29 | 西安亚剑石化设备有限公司 | A kind of welding of chromium built-up welding, solder flux and the welding procedure of chromium built-up welding |
| CN107303630A (en) * | 2016-04-22 | 2017-10-31 | 海宁瑞奥金属科技有限公司 | High arrest toughness welding wire for submerged-arc welding, solder flux and weld metal |
| CN114752815A (en) * | 2021-01-08 | 2022-07-15 | 宝武特种冶金有限公司 | Nickel-based alloy welding strip and preparation method and application thereof |
-
2001
- 2001-09-17 CN CN 01126778 patent/CN1197679C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062533B (en) * | 2006-04-28 | 2011-12-14 | 北京中煤大田耐磨材料有限公司 | Abrasion-proof pile-up welding flux-cored wire for roll squeezer |
| CN101505910B (en) * | 2006-08-09 | 2012-01-04 | Ing商事株式会社 | Iron-based corrosion resistant wear resistant alloy and deposit welding material for obtaining the alloy |
| CN102896458A (en) * | 2011-07-26 | 2013-01-30 | 上海宝钢设备检修有限公司 | Surface treatment method for loop back rolls of hot continuous rolling units |
| CN107303630A (en) * | 2016-04-22 | 2017-10-31 | 海宁瑞奥金属科技有限公司 | High arrest toughness welding wire for submerged-arc welding, solder flux and weld metal |
| CN106425166A (en) * | 2016-12-15 | 2017-02-22 | 昆山京群焊材科技有限公司 | Nb-containing stainless steel soldering strip and soldering flux for monolayer strip electro-slag surfacing |
| CN106624470A (en) * | 2016-12-15 | 2017-05-10 | 昆山京群焊材科技有限公司 | Preparation method of welding strips and welding fluxes for Nb-containing stainless steel strip electrode electroslag surfacing |
| CN107097013A (en) * | 2017-04-05 | 2017-08-29 | 西安亚剑石化设备有限公司 | A kind of welding of chromium built-up welding, solder flux and the welding procedure of chromium built-up welding |
| CN114752815A (en) * | 2021-01-08 | 2022-07-15 | 宝武特种冶金有限公司 | Nickel-based alloy welding strip and preparation method and application thereof |
| CN114752815B (en) * | 2021-01-08 | 2023-11-14 | 宝武特种冶金有限公司 | Nickel-based alloy welding strip and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN1197679C (en) | 2005-04-20 |
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