CN102764941B - Carbon dioxide gas shielded welding flux-cored wire - Google Patents
Carbon dioxide gas shielded welding flux-cored wire Download PDFInfo
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- CN102764941B CN102764941B CN201210230931.1A CN201210230931A CN102764941B CN 102764941 B CN102764941 B CN 102764941B CN 201210230931 A CN201210230931 A CN 201210230931A CN 102764941 B CN102764941 B CN 102764941B
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Abstract
The invention discloses a carbon dioxide gas shielded welding flux-cored wire, which is characterized in that the flux-cored powder of the wire is mixed by the following components in percentage by weight: 10-30% of rutile, 10-30% of silicomanganese, 15-40% of iron powder, 2-15% of nickel powder, 2-25% of chromium metal, 1-5% of aluminium magnesium alloy, 2-10% of ferromolybdenum and 2-10% of ferrovanadium. The carbon dioxide gas shielded welding flux-cored wire disclosed by the invention has the advantages that the hardness and the non-deforming performance of a hot mill guide plate, a hot-forging die, a valve and the like are still can be kept even if the hot mill guide plate, the hot-forging die, the valve and the like work under the high-temperature impact load for a long time.
Description
Technical field
The present invention relates to welding material of metal technical field, be specifically related to a kind of carbon dioxide gas arc welding flux-cored wire.
Background technology
At present, hot-rolling mill guide plate, hot arc mould, valve etc. be applied in plant equipment, need the parts of working under long term high temperature shock loading; So just require these parts to have and under long term high temperature shock loading, still can effectively keep its hardness, indeformable performance, to ensure its result of use.
But; also do not have a kind of welding wire to be suitable for hot-rolling mill guide plate in welding material of metal technical field at present; hot arc mould; valves etc. need to work and still can keep the welding of its hardness, indeformable performance under long term high temperature shock loading, to strengthen their report of carbon dioxide gas arc welding flux-cored wire of hardness performance.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, provide one can ensure hot-rolling mill guide plate, hot arc mould, valves etc. are worked under long term high temperature shock loading still can keep the carbon dioxide gas arc welding flux-cored wire of its hardness, indeformable performance.
In order to solve the problems of the technologies described above; the technical solution used in the present invention is: a kind of carbon dioxide gas arc welding flux-cored wire; the medicine core powder of this welding wire is mixed by each component of following percentage by weight: rutile 10 ~ 30%; silicomangan 10 ~ 30%; iron powder 15 ~ 40%, nickel powder 2 ~ 15%, crome metal 2 ~ 25%; almag 1 ~ 5%, molybdenum-iron 2 ~ 10%.Vanadium iron 2 ~ 10%.
As preferably, above-mentioned carbon dioxide gas arc welding flux-cored wire, the medicine core powder of this welding wire is mixed by each component of following percentage by weight: rutile 17%, silicomangan 15%, iron powder 25%, nickel powder 9%, crome metal 18%, almag 3%, molybdenum-iron 7%.Vanadium iron 6%.
The above-mentioned rutile of the present invention will use after 400 ~ 480 DEG C of bakings, to remove moisture, thereby reduces or eliminates the weld defect causing due to the existence of moisture.
The above-mentioned metal powder of the present invention be vanadium iron, nickel powder, crome metal will through 120 ~ 140 DEG C toast and be incubated 2 ~ 4 hours naturally cooling after use, to remove moisture, thereby reduce or eliminate the weld defect causing due to the existence of moisture.
The above-mentioned silicomangan of the present invention is that wherein various elements meet the commercially available silicomangan that following table 1 requires:
In table 1 silicomangan of the present invention, various elements limit requirement
Be that the above-mentioned silicomangan of the present invention is trade mark FeMn68Si25, wherein chemical composition (wt%) is: Si 19.0～23.0wt%, Mn 63.0～72.0wt%, Cr≤1.2wt%, P≤0.10wt%, S≤0.040wt%.
The above-mentioned almag of the present invention is that wherein various elements meet the commercially available almag that following table 2 requires:
In table 2 almag of the present invention, various elements limit requirement
Be that the above-mentioned almag of the present invention is trade mark FLM3, chemical composition (wt%) is: Al 47～53wt%, Al+Mg >=97.5wt%, Fe≤0.4wt%.
The above-mentioned vanadium iron of the present invention is that wherein various elements meet the commercially available vanadium iron that following table 3 requires:
In table 3 vanadium iron of the present invention, various elements limit requirement
Be that the above-mentioned vanadium iron of the present invention is trade mark FeV50, chemical composition (wt%) is: V >=50.0wt%, Si≤2.0wt%, P≤0.10wt%, S≤0.06wt%, Al≤0.5wt%, Mn≤0.05wt%, C≤0.10wt%.
The above-mentioned nickel powder of the present invention is that wherein various elements meet the commercially available nickel powder that following table 4 requires:
In table 4 nickel powder of the present invention, various elements limit requirement
Be that the above-mentioned nickel powder of the present invention is trade mark FNi-1, chemical composition (wt%) is: Ni >=98wt%, C≤0.02wt%, P≤0.01wt%, S≤0.01wt%.
The above-mentioned iron powder of the present invention is that wherein various elements meet the commercially available iron powder that following table 5 requires:
In table 5 iron powder of the present invention, various elements limit requirement
The above-mentioned iron powder of the present invention is trade mark FHD100-25, and chemical composition (wt%) is: Fe >=98.0wt%, C≤0.05wt%, Si≤0.15wt%, P≤0.01wt%, Mn≤0.4wt%, P≤0.02wt%, S≤0.02wt%, O≤1.0wt%.
The above-mentioned crome metal of the present invention is that wherein various elements meet the commercial metals chromium that following table 6 requires:
In table 6 crome metal of the present invention, various elements limit requirement
Be that the above-mentioned crome metal of the present invention is trade mark JG99-A, chemical composition (wt%) is: Cr >=98.5wt%, C≤0.03wt%, Si≤0.04wt%, P≤0.01wt%, S≤0.02wt%, Al≤0.1wt%, Fe≤0.6wt%, Cu≤0.06wt%, O≤0.15wt%, N≤0.05wt%.
The above-mentioned rutile of the present invention is that wherein various elements meet the commercially available rutile that following table 7 requires:
In table 7 rutile of the present invention, various elements limit requirement
Be that the above-mentioned rutile of the present invention is trade mark Australia, chemical composition (wt%) is: TiO
2>=95.0wt%, FeO≤0.5wt%, S≤0.03wt%, P≤0.05wt%.
The above-mentioned molybdenum-iron of the present invention is that wherein various elements meet the commercially available molybdenum-iron that following table 8 requires:
In table 8 molybdenum-iron of the present invention, various elements limit requirement
Be that the above-mentioned molybdenum-iron of the present invention is trade mark molybdenum 551, chemical composition (wt%) is: MO >=55.0%, FeO≤1.0%, S≤0.10%, P≤0.08%.
The present invention meets following requirement for the steel band that wraps up medicine core powder:
1. adopt carbon steel band, the chemical composition of this carbon steel band and mechanical property meet following table 9 and require:
The chemical composition of table 9 carbon steel band and mechanical property
2. technical requirement
A. applied code
Steel band nominal thickness is 0.50-0.80mm, and nominal width is 900-1020mm flux-cored wire cold-rolled strip.
B. normative reference
Q/HYAQ01 cold continuous rolling sheet metal and steel band
The smooth commodity volume of Q/HYAQ04
Q/HYAQ10 steel plate and steel band must be packed, mark and certificate of quality
C. size, profile, weight and tolerance
D. thickness tolerance should meet the regulation of table 10
Table 10
Other permissible variation in dimension of steel band, shape requirement meet Q/HYAQ01 or Q/HYAQ04 standard.
Finished steel coils weight:
Smooth volume weight: 6.0～10.0 tons of target volume weights: 8.0～10 tons
Cold rolling coil weight: 3.5～5.0 tons of target volume weights: 4.0～5.0 tons
The condition of delivery:
Steel band through heat treatment (annealing), smooth after delivery, surface be coated with antirust oil.
Surface quality: steel strip surface must not have scab, crackle, be mingled with, folding and other to using harmful defect, steel must not have layering.
Allow≤slight the pit of 1/2 thickness deviation of steel strip surface, shadow scratch, allow local oxidation tint.
Minute bubbles and the roll impression of allow≤1/2 thickness deviation of reverse side, but should ensure minimum thickness.
Steel band, in quantity-produced process, is found and is difficult to because the blemish to local is difficult to remove, therefore,
Steel band allows the delivery of band defect, but defective part must not exceed 8% of every volume total length.
The surface texture of steel band
Roughness: Ra=0.50 ∽ 1.3 υ m, desired value: Ra=0.70 ∽ 1.0 υ m
Detect rule and test method
The detection rule of steel band and test method should meet the regulation of Q/HYAQ01 and Q/HYAQ04 standard.
The above-mentioned various raw materials of the present invention add object to be:
Rutile: use as slag former, strictly control the addition of slag former, can attenuate postwelding skull, be conducive to the effusion of gas in molten bath, reduce pore quantity, improve the deposition rate of welding wire.
Silicomangan: add appropriate element silicon to contribute to improve appearance of weld in formula.
Iron powder: the addition of iron powder increases can contribute to improve deposition efficiency, the pore occurring while reducing on priming paint steel plate high speed fillet welding and the quantity of pit.
Nickel powder: to the excessive alloying element of weld metal.
Magnadure: add appropriate magnadure to contribute to reduce the oxygen content in weld metal in formula, be beneficial to the improvement of weld metal toughness.
Mid-carbon fe-mn: add appropriate mid-carbon fe-mn to contribute to improve toughness and plasticity in formula.
The particle size of above-mentioned each component of medicine core powder is all crossed 80% mesh sieve, and suitable medicine core powder particles is conducive to composition and mixes.
The particle size of above-mentioned each component of medicine core powder all meets and can cross 80 mesh sieves, is specially:
Suitable medicine core powder particles is conducive to composition and mixes; In addition, the too large medicine core of particle diameter powder is to prepare welding wire process more difficult, and, be difficult for compacting, in welding wire use procedure, component is difficult for making full use of; Insufficient in welding process burning, easily produce a large amount of dusty gas, flue dust etc., have a strong impact on welding procedure.
Its manufacturing process of the above-mentioned submerged-arc welding flux-cored wire of the present invention and step are prior art, specific as follows:
1. the medicine core powder of pressing formula rate preparation submerged-arc welding flux-cored wire of the present invention, mixes by each component;
2. steel band is rolled into U-shaped, in U-lag, add the medicine core powder that accounts for welding wire gross weight 33 ~ 37%;
3. adopt forming machine that U-lag is healed up, medicine core powder is wrapped up wherein, then pass through wire drawing machine by road drawing, tube reducing, finally make the diameter of welding wire reach 1.6mm, obtain final products.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) flux-cored wire of the present invention has higher deposition rate and larger operating efficiency, and when welding weldment without pit, pore.
(2) in use, the generation of face of weld slag is few, spatter is little, appearance of weld is good and weld fumes is few for flux-cored wire of the present invention.
(3) flux-cored wire of the present invention in use, adopts manual welding and automatic welding, does not need to reduce speed of welding and has improved welding efficiency, can also need to adjust flexibly according to welding each component proportion of medicine core powder, uses more convenient.
(4) flux-cored wire of the present invention uses hot-rolling mill guide plate, and hot arc mould, after the parts such as valve, is worked them and still can be kept its hardness, indeformable performance under long term high temperature shock loading.
Brief description of the drawings
Accompanying drawing is the processing process figure of carbon dioxide gas arc welding flux-cored wire of the present invention.
Detailed description of the invention:
Below by embodiment, the present invention is described in further detail, but the present invention is not only confined to following examples.
Embodiment 1
Selecting steel band nominal thickness is 0.60mm, and nominal width is 1000mm flux-cored wire cold-rolled strip, adopts forming machine to be rolled into U-lag.Taking 1000 grams of submerged-arc welding flux-cored wires as example: get 170 grams of rutile, 150 grams of silicomangans, 250 grams of iron powders, 90 grams of nickel powders, 180 grams of crome metals, 30 grams of almags, 70 grams of molybdenum-irons, 60 grams of vanadium iron.All raw materials are added in mixer and mixed 45 minutes, then add in U-lag steel band, filling rate is 35%; U-lag is healed up, medicine core powder is wrapped up wherein, then pass through wire drawing machine by road drawing, tube reducing, finally make the diameter of welding wire reach 3.2mm.
1. test method:
(1) chemical composition test
Welding wire is carried out after built-up welding test plate (panel) freezes, getting centre position wlding.By direct-reading spectrometer, got wlding is carried out to chemical composition spectroscopic test, the measured signal component value of equipment is test value.
Result is as shown in table 11:
(2) HRC detects
Intercept a square sample from every built-up welding test plate (panel).Hardness detects, and measures HRC hardness number.The results are shown in Table shown in 12:
Table 12
Show from result, sample the key technical indexes prepared by the embodiment of the present invention 1 meets enterprise and characterizes requirement.
Embodiment 2
Selecting steel band nominal thickness is 0.50mm, and nominal width is 900mm flux-cored wire cold-rolled strip, adopts forming machine to be rolled into U-lag.Taking 1000 grams of submerged-arc welding flux-cored wires as example: get 120 grams of rutile, 140 grams of silicomangans, 300 grams of iron powders, 120 grams of nickel powders, 20 grams of crome metals, 40 grams of almags, 40 grams of molybdenum-irons, 40 grams of vanadium iron.All raw materials are added in mixer and mixed 45 minutes, then add in U-lag steel band, filling rate is 37%; U-lag is healed up, medicine core powder is wrapped up wherein, then pass through wire drawing machine by road drawing, tube reducing, finally make the diameter of welding wire reach 1.6mm.
Embodiment 3
Selecting steel band nominal thickness is 0.80mm, and nominal width is 1020mm flux-cored wire cold-rolled strip, adopts forming machine to be rolled into U-lag.Taking 1000 grams of submerged-arc welding flux-cored wires as example: get 250 grams of rutile, 200 grams of silicomangans, 150 grams of iron powders, 50 grams of nickel powders, 100 grams of crome metals, 50 grams of almags, 100 grams of molybdenum-irons, 100 grams of vanadium iron.All raw materials are added in mixer and mixed 45 minutes, then add in U-lag steel band, filling rate is 37%; U-lag is healed up, medicine core powder is wrapped up wherein, then pass through wire drawing machine by road drawing, tube reducing, finally make the diameter of welding wire reach 1.6mm.
Claims (3)
1. a carbon dioxide gas arc welding flux-cored wire, it is characterized in that: the medicine core powder of this welding wire is mixed by each component of following percentage by weight: rutile 10 ~ 30%, silicomangan 10 ~ 30%, iron powder 15 ~ 40%, nickel powder 2 ~ 15%, crome metal 2 ~ 25%, almag 1 ~ 5%, molybdenum-iron 2 ~ 10%, vanadium iron 2 ~ 10%;
Described rutile is the rutile after 400 ~ 480 DEG C of bakings; Described vanadium iron, nickel powder, crome metal are for to toast and to be incubated 2 ~ 4 hours naturally cooled vanadium iron, nickel powder or crome metals through 120 ~ 140 DEG C.
2. carbon dioxide gas arc welding flux-cored wire according to claim 1; it is characterized in that: the medicine core powder of this welding wire is mixed by each component of following percentage by weight: rutile 17%; silicomangan 15%; iron powder 25%; nickel powder 9%, crome metal 18%, almag 3%; molybdenum-iron 7%, vanadium iron 6%.
3. carbon dioxide gas arc welding flux-cored wire according to claim 1 and 2; it is characterized in that: described silicomangan is that wherein various elements meet the commercially available silicomangan of following requirement: silicomangan is trade mark FeMn68Si25; wherein chemical composition (wt%) is: Si 19.0～23.0wt%; Mn 63.0～72.0wt%; Cr≤1.2wt%; P≤0.10wt%, S≤0.040wt%.
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| CN201210230931.1A CN102764941B (en) | 2012-07-03 | 2012-07-03 | Carbon dioxide gas shielded welding flux-cored wire |
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| CN201210230931.1A CN102764941B (en) | 2012-07-03 | 2012-07-03 | Carbon dioxide gas shielded welding flux-cored wire |
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| CN102764941B true CN102764941B (en) | 2014-11-26 |
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| CN103495817B (en) * | 2013-10-16 | 2015-11-18 | 宁波隆兴焊割科技股份有限公司 | C0 2or 80Ar+C0 2gas-shielded basic weldering flux-cored wire |
| CN103495816B (en) * | 2013-10-16 | 2016-06-22 | 宁波隆兴焊割科技股份有限公司 | CO2 gas shield stainless flux-cored wire and preparation method thereof |
| CN103659049B (en) * | 2013-12-04 | 2015-09-30 | 宁波隆兴焊割科技股份有限公司 | A kind of nickelic, chromium weld penetration flux-cored wire and preparation method |
| CN103659039B (en) * | 2013-12-04 | 2016-01-06 | 宁波隆兴焊割科技股份有限公司 | A kind of HVAF type flux-cored wire and preparation method thereof |
| CN104588904B (en) * | 2014-11-21 | 2016-09-21 | 宁波隆兴焊割科技股份有限公司 | A kind of high tenacity, low yield strength ratio flux-cored wire and preparation method thereof |
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| GB1079710A (en) * | 1964-12-17 | 1967-08-16 | Murex Welding Processes Ltd | Improvements in arc welding electrodes |
| JP2624560B2 (en) * | 1990-04-20 | 1997-06-25 | 日鐵溶接工業株式会社 | Flux-cored wire for gas shielded arc welding |
| CN1238151C (en) * | 2002-10-09 | 2006-01-25 | 天津大学 | Repairing cold-rolled intermediat roll working lining build-up welding agent core welding stick |
| CN100467197C (en) * | 2007-08-31 | 2009-03-11 | 北京工业大学 | P92 steel all position welding gas-protection flux-cored wire |
| CN101450426B (en) * | 2008-12-31 | 2010-12-15 | 宁波隆兴焊割科技股份有限公司 | Low-temperature steel flux-cored wire |
| CN101450425B (en) * | 2008-12-31 | 2010-10-13 | 宁波隆兴焊割科技股份有限公司 | Heat-resisting steel flux-cored wire |
| CN101658987B (en) * | 2009-09-14 | 2011-11-23 | 山东中创钢构有限公司 | Flux-cored wire |
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