CN1023549C - Ceramic flux for build-up welding - Google Patents
Ceramic flux for build-up welding Download PDFInfo
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- CN1023549C CN1023549C CN 92104892 CN92104892A CN1023549C CN 1023549 C CN1023549 C CN 1023549C CN 92104892 CN92104892 CN 92104892 CN 92104892 A CN92104892 A CN 92104892A CN 1023549 C CN1023549 C CN 1023549C
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- welding
- build
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- hardness
- flux
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Abstract
The present invention provides a ceramic flux for build-up welding operation, which is mainly suitable for the submerged arc automatic build-up welding of mechanical components requiring high temperature and abrasion resistance. The ceramic flux includes chemical components (wt%): 5 to 10% of CaCO3, 20 to 25% of CaF2, 20 to 25% of AL2O3, 15 to 35% of MgO, 10 to 20% of TiO2, 3 to 6% of Fe-Ti, 2 to 4% of Fe-Cr, 3 to 6% of Fe-Si and 3 to 6% of Fe-W. The present invention is matched with H25 Cr3 Mo2 Mn VA to obtain deposited metal having excellent red-hardness and high-temperature anti-abrasion performance.
Description
The invention belongs to welding material.Mainly be applicable to the high temperature wear resistant alloy automatic submerged-arc bead welding.
Many components of machine are all worked under hot state and abrasive conditions as the Pilger rolling mill roll of hot roll, seamless steel pipe and plug, hot shears cutting edge, valve sealing face etc., and operating temperature is generally more than 500 ℃, have more than 600 ℃.Therefore, require the superficial layer of parts to have higher red hardness and wearability.In order to reach this purpose, adopt the method for built-up welding usually, component surface built-up welding one deck red hardness high with overlay claddings high temperature resistance wearing and tearing.As the solder flux of built-up welding, it is good not only to require to take off processing performances such as slag, shaping, but also requires solder flux to cooperate the deposited metal of institute's built-up welding to have wear resistance under higher red hardness and the high temperature with specific welding wire.
In the prior art, Russian Patent SU585020 provides the solder flux that a kind of built-up welding is used.The composition branch (weight %) of this solder flux is: MgO 20～24%, Al
2O
327～30%, Fe-Cr 4～6%, and Fe-Ti 2～2.5%, and Fe-V 2～3%, and Fe-Mo 2～2.5%, crome metal 3～6%, and manganese powder 7～10%, Cu 1～5%, and all the other are CaF
2This solder flux cooperates with Cr-Mn steel welding wire, and through 500 ℃ of insulations 1 hour, hardness can reach HRC48～52 to its deposited metal, has higher wearability and red hardness at postwelding.But this patent is through showing that with contrast test of the present invention the high temperature hardness value of this solder flux under 650 ℃ of temperature is lower.
The bonded flux that the object of the present invention is to provide a kind of new built-up welding to use, this bonded flux carries out built-up welding with corresponding special welding wire coupling, and the gained deposited metal still has good red hardness and anti-wear performance under up to 650 ℃ of temperature.
At above-mentioned purpose, the composition branch (weight %) of the bonded flux that the present invention is designed is: CaCO
35～10%, CaF
220～25%, Al
2O
320～25%, MgO 15～35%, TiO
210～20%, Fe-Ti 3～6%, and Fe-Cr 2～4%, and Fe-Si 3～6%, and Fe-W 3～6%.
The content of element (weight %) is as follows in the above-mentioned ferroalloy: Ti content is 27～30% among the Fe-Ti, and Cr content is 50～60% among the Fe-Cr, and Si content is 40～70% among the Fe-Si, and W content is 65～70% among the Fe-W.
Be bonded flux of the present invention on one-tenth is grouped into, adopted MgO-Al
2O
3-CaF
2-TiO
2Slag system adds a small amount of CaCO
3, make solder flux that higher basicity be arranged, strengthen the metallurgy and the transition alloy capable of solder flux, and make the fusing point and the modest viscosity of slag, have the favorable manufacturability energy.
Bonded flux of the present invention and special welding wire H25Cr3Mo2MnVA are complementary and carry out built-up welding.
Added ferrotianium, ferrosilicon, ferrochrome and ferrotungsten in the solder flux, and contained molybdenum and vanadium in the welding wire, thereby made intensified elements such as containing a certain amount of chromium, molybdenum, vanadium, tungsten in the deposited metal.Through after welding treatment, the carbide of these elements is strongization particle, can improve its red hardness and wearability.Added tungsten in the solder flux particularly of the present invention, tungsten is the metal of infusibility, the creep resistance maximum of tungsten under hot conditions.In martensite steel, tungsten can enter in the solid solution and improve recrystallization temperature by the prevention diffusion, therefore adds a spot of tungsten and can improve the beginning temperature of crystallization again in deposited metal; Tungsten also can be by separating out second mutually or be complicated and stable carbide, or be the intermediate compound of high tungsten, produces the dispersion hardening effect, thereby improve the heat resistance of deposited metal.
A large amount of experimental study results show, the compound adding of tungsten and molybdenum can be played good reciprocation, this reciprocation adds the tungsten or more superior (" Mayari " Zhou Shunshen volume of molybdenum of equivalent separately to the effect ratio that improves steel heat resistance and creep resistance, 1976, the Shanghai People's Press, P74～78).This is one of the present invention's major reason of still having higher hardness under 650 ℃.
Production technology of the present invention is as follows: divide the scope batching by forming, after fully mixing, it is even to do the binding agent damping with waterglass, carries out granulation subsequently on comminutor, and dries at low temperatures to the solder flux dry tack free, dries under 300～400 ℃ of temperature at last.
Adopt bonded flux of the present invention and special welding wire H
25Cr
3Mo
2MnVA is complementary, and the deposited metal of gained is after 620 ℃ of insulations heat treatment in 2 hours, and the high temperature hardness that normal temperature hardness can reach under ℃ temperature of HRC43～50,650 can reach more than the Hv330, has excellent red hardness and high temperature resistance polishing machine.Simultaneously, the present invention also has good welding forming processing performance, and the figuration of bead of institute's built-up welding is attractive in appearance, and it is easy to take off slag.
Compared with prior art, major advantage of the present invention is under up to 650 ℃ high temperature, still have good red hardness and wear resistance, can satisfy fully, solved the built-up welding problem of the high component of machine of some serviceability temperatures up to the instructions for use under 650 ℃ of temperature.
Embodiment
Divide scope according to composition of the present invention, prepare three batches of bonded fluxs, its concrete composition divides as shown in table 1.Three batches of solder flux are complementary with corresponding welding wire H25Cr3Mo2MnVA respectively carry out built-up welding, tested the performance of deposited metal after the built-up welding.The chemical composition of welding wire and the performance of deposited metal are respectively shown in table 2 and table 3.
Find out that by table 3 the be complementary deposited metal of built-up welding gained of the present invention and H25Cr3M2MnVA welding wire all has excellent normal temperature hardness and high temperature hardness, promptly has excellent red hardness.
The composition branch (weight %) of table 1 embodiment bonded flux
Fe-Ti Fe-Cr Fe-Si Fe-W
Lot number MgO Al
2O
3CaCO
3CaF
2TiO
2
(containing Ti28%) (containing Cr55%) (containing Si44%) (containing W66%)
1 17 22 5 24 17 3 4 3 5
2 15 20 8 20 20 6 2 6 3
3 30 20 5 20 10 4 2 4 5
Table 2, the used welding wire H of embodiment
25Cr
3Mo
2The chemical composition of MnVA (weight %)
C Si Mn P S Cr Mo V Fe
0.26 surplus in the of 0.496 1.21 0.03 0.02 3.18 1.52 0.51
Table 3 embodiment deposited metal performance
650 ℃ of high temperature hardness Hv of lot number normal temperature hardness HRc remarks
1 48.0 48.0 49.0 363 365 368 sample postweldings are through 620 ℃
Handled in 2 46.0 45.0 46.0 355 351 353 2 hours
3 43.0 44.0 45.0 334 343 348
Claims (2)
1, a kind of ceramic flux for build-up welding contains CaF
2, Al
2O
3, Fe-Cr, Fe-Ti, Fe-Mo and MgO, it is characterized in that forming and divide (a weight %) to be: CaCO
35～10%, CaF
220～25%, Al
2O
320～25%, MgO 15～35%, TiO
210～20%, Fe～Ti 3～6%, and Fe-Cr 2～4%, and Fe-Si 3～6%, and Fe-W 3～6%.
2, bonded flux according to claim 1 is characterized in that the content of Ti among the Fe-Ti is 27～30%, and the content of Cr is 50～60% among the Fe-Cr, and the content of Si is 40～70% among the Fe-Si, and the content of W is 65-70% among the Fe-W, and all is weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104892 CN1023549C (en) | 1992-06-22 | 1992-06-22 | Ceramic flux for build-up welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104892 CN1023549C (en) | 1992-06-22 | 1992-06-22 | Ceramic flux for build-up welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1067200A CN1067200A (en) | 1992-12-23 |
| CN1023549C true CN1023549C (en) | 1994-01-19 |
Family
ID=4941051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92104892 Expired - Fee Related CN1023549C (en) | 1992-06-22 | 1992-06-22 | Ceramic flux for build-up welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023549C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554514A (en) * | 2012-01-16 | 2012-07-11 | 安泰科技股份有限公司 | Sintered flux for stainless steel submerged arc strip surfacing and manufacturing method of sintered flux |
| RU2727137C1 (en) * | 2019-12-19 | 2020-07-20 | Федеральное государственное унитарное предприятие "Центральный научно-исследовательский институт конструкционных материалов "Прометей" имени И.В. Горынина Национального исследовательского центра "Курчатовский институт" (НИЦ "Курчатовский институт" - ЦНИИ КМ "Прометей") | Agglomerated flux 48af-72 |
-
1992
- 1992-06-22 CN CN 92104892 patent/CN1023549C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554514A (en) * | 2012-01-16 | 2012-07-11 | 安泰科技股份有限公司 | Sintered flux for stainless steel submerged arc strip surfacing and manufacturing method of sintered flux |
| RU2727137C1 (en) * | 2019-12-19 | 2020-07-20 | Федеральное государственное унитарное предприятие "Центральный научно-исследовательский институт конструкционных материалов "Прометей" имени И.В. Горынина Национального исследовательского центра "Курчатовский институт" (НИЦ "Курчатовский институт" - ЦНИИ КМ "Прометей") | Agglomerated flux 48af-72 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1067200A (en) | 1992-12-23 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |