CN103028819A - Welding technology for nickel-based alloy weld part - Google Patents
Welding technology for nickel-based alloy weld part Download PDFInfo
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- CN103028819A CN103028819A CN201210534041XA CN201210534041A CN103028819A CN 103028819 A CN103028819 A CN 103028819A CN 201210534041X A CN201210534041X A CN 201210534041XA CN 201210534041 A CN201210534041 A CN 201210534041A CN 103028819 A CN103028819 A CN 103028819A
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Abstract
The invention relates to a welding technology for a nickel-based alloy weld part, comprising the following steps: (1) blanking: a groove cut is machined in each nickel-based alloy machined part; (2) the groove cut and the peripheral surface of the groove cut are cleaned; (3) welding: the groove cut positions of two nickel-based alloy machined parts are butted, a V-shaped groove cut is formed after the two nickel-based alloy machined parts are butted, and the welding part is obtained after argon arc welding; and (4) after-welding stabilization processing: the welding part obtained in the step (3) is placed in an electric furnace to be subjected to post-welding stabilization processing, so that the finished nickel-based alloy weld part is obtained. The welding technology for the nickel-based alloy weld part has the advantages that no hot cracks and air holes are generated in the welding process, and the capability of weld metal on resisting intergranular corrosion can be improved.
Description
Technical field
The present invention relates to a kind of non-ferrous metal welding procedure, especially relate to a kind of welding procedure of Nickel-based Alloy Welding part.
Background technology
Nickel-base alloy all has antiacid under oxidation and reducing environment and alkali resistant metal erosion performance, has fabulous anticorrosion stress-resistant cracking behavior, anti-spot corrosion and crevice corrosion behavior; The chemism of nickel-base alloy is low, the oxide-film that the oxidation initial stage generates can prevent the further oxidation of nickel and corrosion, good corrosion stability is arranged during high temperature, and it also has high fusing point (1453 ℃), under high temperature and low temperature, all have good plasticity and processing characteristics.Based on the superior performance characteristics of nickel-base alloy, make it at petroleum chemical industry good development be arranged.
The weldability of nickel-base alloy is good, but the fire check of weld metal and pore are the most scabrous two problems in the welding.During nickel-base alloy INCOLOY 825 welding because impurity segregations in weld metal such as S, Si, S, Ni form the Ni-NiS low melting point eutectic, in the weld metal process of setting, this low melting point eutectic forms one deck liquid film between the crystal boundary face, under the effect of welding stress, form complicated silicate, in the weld metal process of setting or the high-temperature region after solidifying, form the high temperature ductility-dip crack.Add INCOLOY 825 poor thermal conductivity, welding heat is difficult for diffusion, and it is overheated to be prone to, and causes coarse grains, and the intergranular interlayer is thickened, and has weakened the intergranular adhesion, and the liquid-solid life period of weld metal is lengthened, and has promoted the formation of fire check.H
2The O pore is pore common in the Nickel-based Alloy Welding, H
2O has little time to overflow when weld pool solidifies, and forms pore.H
2The O pore is formed near the melt run of welding bead and the starting the arc and joint are many; this is because welding bead neighboring area or striking and joint cooling are fast in welding process; crystallization rate is large; these zones are often protected relatively poor in addition; had little time to overflow by the hydrogen that enters in mother metal or the air in the dark pond, and form H with the nickel protoxide reaction
2The O pore.Therefore need to adopt necessary welding procedure measure to prevent the generation of fire check and pore.
Summary of the invention
The object of the present invention is to provide a kind of welding procedure of Nickel-based Alloy Welding part, solve the fire check and the pore that occur in the welding, improve the ability of weld metal anti intercrystalline corrosion by the postwelding stabilization processes.
The technology contents that the present invention takes is:
The welding procedure of Nickel-based Alloy Welding part, its step is as follows:
(1), blanking: the nickel-base alloy workpiece is processed a groove, and the tilt angle alpha of groove is 30～35 °, and sloping high H is 0.5～1.0mm;
(2), cleaning groove and groove circumferential surface: with the stainless steel wire brush 50～100mm scope inner surface around groove and the groove is brushed, and cleaned with acetone, to remove impurity;
(3), welding: with the docking of two nickel-base alloy workpiece finished edge places, form a double V-groove after the docking of two nickel-base alloy workpieces, two nickel-base alloy workpiece grooves bottom spacing B is 2.5～3.0mm; Then select the ERNiCrMo-3 welding wire to carry out manual argon arc welding (GTAW) and weld to get weldment; The sweating heat input quantity is 4.5～10.08KJ/cm during welding, temperature is 70～100 ℃ between the road, adopts purity 〉=99.996% argon gas to make protection gas, and the throughput of argon gas is 8～20L/min, the back side in welded seam is protected with 〉=99.996% argon gas, and throughput is 15-20L/min; Postwelding brushes oxide with the stainless steel wire brush;
(4), postwelding stabilization processes: it is 390～400 ℃ electric furnace that the weldment that makes in the step (3) is put into temperature, after temperature to be welded reaches the interior temperature of stove, make that temperature is warming up to 910～930 ℃ this temperature insulation 15～25 minutes with 110～130 ℃/h speed in the stove, and then immerse immediately after weldment taken out in stove the water of normal temperature and to carry out the water-cooled Nickel-based Alloy Welding part that gets product in 20～30 seconds.
In the welding procedure of above-mentioned Nickel-based Alloy Welding part, weld heat input E=(U * I * 60
/1000 * V)---E-heat input (KJ/cm) wherein, U-arc voltage (V), I-welding current (A), V-speed of welding (cm/min); Source of welding current polarity adopts straight polarity direct current, and gage of wire is Ф 2.4mm, and welding current is 90～120A, and weldingvoltage is 10～14V, and speed of welding is 10～12cm/min.
The advantage that the present invention compared with prior art has is: the present invention solves fire check and the pore that occurs in the welding; Objectionable impurities content and to reduce welding stress be the generation that prevents fire check in the control weld metal, by selecting S, ERNiCrMo-3 welding wire that Si content is on the low side, fusing point eutectic thing is reduced, reduced the generation of fire check, select in addition suitable welding condition, effectively control weld heat input during welding, reduced weldment and be subjected to heat rating, thereby reduced welding stress.Can prevent that with acetone cleaning groove and groove circumferential surface pore from producing before the weldering; Existing Nickel-based Alloy Welding technique of while, postwelding is not heat-treated, alloy of the present invention welds laggard line stabilization processing, it can improve the anti intercrystalline corrosion ability of weld metal through stabilization processes, its basic reason is that titanium is carbide, the absorption affinity of titanizing carbon is stronger than chromium carbide under the stabilization processes condition, thereby has reduced the carbide of chromium, has improved the ability of anti intercrystalline corrosion.
Description of drawings
Accompanying drawing 1 is the welding schematic diagram of two nickel-base alloys among the present invention.
The specific embodiment
By reference to the accompanying drawings Nickel-based Alloy Welding technique provided by the invention is elaborated.
As shown in Figure 1, two nickel-base alloy workpieces 1 respectively have a groove 1.1, and the angle of inclination of groove 1.1 is α, and the slope height is H; During welding a double V-groove is docked and forms at groove 1.1 places of two nickel-base alloy workpieces 1, two nickel-base alloy workpiece grooves bottom spacing is B.
Example 1,The welding procedure of Nickel-based Alloy Welding part, its step is as follows:
(1), blanking: two INCOLOY, 825 nickel-base alloy workpieces are respectively processed a groove 1.1, and the tilt angle alpha of groove 1.1 is 32 °, and sloping high H is 0.8mm;
(2), cleaning groove and groove circumferential surface: with the stainless steel wire brush to the groove of above-mentioned two INCOLOY, 825 nickel-base alloy workpieces and groove all around 80mm scope inner surface brush with the stainless steel wire brush, and clean with acetone, to remove impurity;
(3), welding: the groove place docking of two INCOLOY, the 825 nickel-base alloy workpieces after will cleaning, form a double V-groove after the docking of two INCOLOY, 825 nickel-base alloy workpieces, two INCOLOY, 825 nickel-base alloy workpiece grooves bottom spacing B is 2.5mm; Then the ERNiCrMo-3 welding wire of selecting TECHALLOY company to produce carries out manual argon arc welding and welds to get weldment; Source of welding current polarity adopts straight polarity direct current, and gage of wire is Ф 2.4mm, and welding current is 95A, and weldingvoltage is 12V, and speed of welding is 10cm/min; Temperature is 95 ℃ between the road; Adopt purity 〉=99.996% argon gas to make protection gas, throughput is 10L/min, protects with 〉=99.996% argon gas at the back side of welded seam, and throughput is 16L/min; Brush oxide with the stainless steel wire brush after the welding;
(4), postwelding stabilization processes: it is 398 ℃ electric furnace that the weldment that makes in the step (3) is put into temperature, after temperature to be welded reaches the interior temperature of stove, make the interior temperature of stove be warming up to 920 ℃ with 120 ℃/h speed, this temperature insulation 20 minutes, and then immerse immediately after weldment taken out in stove the water of normal temperature and to carry out the water-cooled INCOLOY 825 Nickel-based Alloy Welding parts that get product in 25 seconds.
Above-mentioned INCOLOY 825 Nickel-based Alloy Welding parts are carried out the physics and chemistry test, carry out ASME IX-2010ED 2011AD, result of the test is as follows:
(1) tension test, two values of tensile strength are 645Mpa;
(2) bend test, athwartship plane is curved and two horizontal back ofs the body are curved to do two, and the cambered axle diameter is 24mm, and angle is 180 °, and any defective, pass the test do not appear in the Seam and heat effected zone of crooked rear sample;
(3) ASTM G28 A method (add 25g ferric sulfate in 50% aqueous sulfuric acid 600ml, test period is 120h) is pressed in Huey test, qualified index≤0.08mm/month, and result of the test is 0.031 mm/month, meets index;
(4) hardness test is corroded with corrosive agent butt welded seam cross section after the testpieces polishing, distinguishes weld seam, melt run and heat affected area, and the result shows HV10 all≤345, and it is all qualified to test;
The above only is preferred embodiments of the present invention, is not to limit practical range of the present invention.All equivalences of doing according to the content of the present patent application claim change and retouching, all should be as technology category of the present invention.
Claims (1)
1. the welding procedure of Nickel-based Alloy Welding part, its step is as follows:
(1), blanking: the nickel-base alloy workpiece is processed a groove, and the tilt angle alpha of groove is 30～35 °, and sloping high H is 0.5～1.0mm;
(2), cleaning groove and groove circumferential surface: with the stainless steel wire brush 50～100mm scope inner surface around groove and the groove is brushed, and cleaned with acetone, to remove impurity;
(3), welding: with the docking of two nickel-base alloy workpiece finished edge places, form a double V-groove after the docking of two nickel-base alloy workpieces, two nickel-base alloy workpiece grooves bottom spacing B is 2.5～3.0mm; Then select the ERNiCrMo-3 welding wire to carry out argon arc welding and weld to get weldment; The sweating heat input quantity is 4.5～10.08KJ/cm during welding, temperature is 70～100 ℃ between the road, adopts purity 〉=99.996% argon gas to make protection gas, and the throughput of argon gas is 8～20L/min, the back side in welded seam is protected with 〉=99.996% argon gas, and throughput is 15-20L/min; Postwelding brushes oxide with the stainless steel wire brush;
(4), postwelding stabilization processes: it is 390～400 ℃ electric furnace that the weldment that makes in the step (3) is put into temperature, after temperature to be welded reaches the interior temperature of stove, make that temperature is warming up to 910～930 ℃ this temperature insulation 15～25 minutes with 110～130 ℃/h speed in the stove, and then immerse immediately after weldment taken out in stove the water of normal temperature and to carry out the water-cooled Nickel-based Alloy Welding part that gets product in 20～30 seconds.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862147A (en) * | 2014-03-31 | 2014-06-18 | 山东大学 | Filler wire argon tungsten-arc welding process for molybdenum-copper alloy and nickel-base superalloy |
| CN104084675A (en) * | 2014-07-03 | 2014-10-08 | 上海锅炉厂有限公司 | High temperature nickel base alloy welding process |
| CN104174980A (en) * | 2014-09-05 | 2014-12-03 | 四川石油天然气建设工程有限责任公司 | Consumable electrode nickel base alloy anti-corrosion surfacing protection gas and surfacing method |
| CN104646801A (en) * | 2014-12-30 | 2015-05-27 | 上海锅炉厂有限公司 | Welding process of GH984G high temperature nickel-iron based alloy |
| CN104759743A (en) * | 2015-04-23 | 2015-07-08 | 中国石油天然气第一建设公司 | Argon arc welding technological method for nickel base alloy tubes |
| CN106077951A (en) * | 2016-06-30 | 2016-11-09 | 上海交通大学 | Control the method that nickel-base alloy multilamellar wire filling laser welding beat-affected zone crack is formed |
| CN106914673A (en) * | 2017-04-13 | 2017-07-04 | 中国石油大学(华东) | A kind of nickel-base material soldered fitting composition and mechanical property homogenization method |
| CN107378410A (en) * | 2017-09-22 | 2017-11-24 | 南通如港船舶配套机械有限公司 | A kind of shipbuilding cold and hot working method |
| CN109759681A (en) * | 2019-02-28 | 2019-05-17 | 陕西建工安装集团有限公司 | A kind of Nickel-Based Steel method for welding pipeline |
| CN109807440A (en) * | 2019-01-31 | 2019-05-28 | 丹阳市海威电热合金有限公司 | A kind of ni-fe-based alloy welding method |
| CN110587076A (en) * | 2019-09-25 | 2019-12-20 | 淄博海益精细化工有限公司 | Method for welding nickel-based alloy after service in high-temperature and oxidation environment |
| CN111261399A (en) * | 2020-03-30 | 2020-06-09 | 南京安盛电子有限公司 | Method for stacking and welding silicon steel sheets of transformer |
| CN114654056A (en) * | 2022-05-06 | 2022-06-24 | 鲁西工业装备有限公司 | Nickel alloy and nickel-based cast steel dissimilar steel welding method |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862147A (en) * | 2014-03-31 | 2014-06-18 | 山东大学 | Filler wire argon tungsten-arc welding process for molybdenum-copper alloy and nickel-base superalloy |
| CN103862147B (en) * | 2014-03-31 | 2015-12-09 | 山东大学 | The silk filling pulsed tungsten argon arc weld(ing) technique of molybdenum-copper and nickel base superalloy |
| CN104084675A (en) * | 2014-07-03 | 2014-10-08 | 上海锅炉厂有限公司 | High temperature nickel base alloy welding process |
| CN104084675B (en) * | 2014-07-03 | 2016-04-06 | 上海锅炉厂有限公司 | A kind of high-temperature nickel-base alloy welding procedure |
| CN104174980A (en) * | 2014-09-05 | 2014-12-03 | 四川石油天然气建设工程有限责任公司 | Consumable electrode nickel base alloy anti-corrosion surfacing protection gas and surfacing method |
| CN104646801A (en) * | 2014-12-30 | 2015-05-27 | 上海锅炉厂有限公司 | Welding process of GH984G high temperature nickel-iron based alloy |
| CN104759743A (en) * | 2015-04-23 | 2015-07-08 | 中国石油天然气第一建设公司 | Argon arc welding technological method for nickel base alloy tubes |
| CN106077951A (en) * | 2016-06-30 | 2016-11-09 | 上海交通大学 | Control the method that nickel-base alloy multilamellar wire filling laser welding beat-affected zone crack is formed |
| CN106914673A (en) * | 2017-04-13 | 2017-07-04 | 中国石油大学(华东) | A kind of nickel-base material soldered fitting composition and mechanical property homogenization method |
| CN106914673B (en) * | 2017-04-13 | 2018-07-17 | 中国石油大学(华东) | A kind of nickel-base material soldered fitting ingredient and mechanical property homogenization method |
| CN107378410A (en) * | 2017-09-22 | 2017-11-24 | 南通如港船舶配套机械有限公司 | A kind of shipbuilding cold and hot working method |
| CN109807440A (en) * | 2019-01-31 | 2019-05-28 | 丹阳市海威电热合金有限公司 | A kind of ni-fe-based alloy welding method |
| CN109759681A (en) * | 2019-02-28 | 2019-05-17 | 陕西建工安装集团有限公司 | A kind of Nickel-Based Steel method for welding pipeline |
| CN110587076A (en) * | 2019-09-25 | 2019-12-20 | 淄博海益精细化工有限公司 | Method for welding nickel-based alloy after service in high-temperature and oxidation environment |
| CN111261399A (en) * | 2020-03-30 | 2020-06-09 | 南京安盛电子有限公司 | Method for stacking and welding silicon steel sheets of transformer |
| WO2021196676A1 (en) * | 2020-03-30 | 2021-10-07 | 南京安盛电子有限公司 | Transformer silicon steel sheet stacking and welding method |
| CN114654056A (en) * | 2022-05-06 | 2022-06-24 | 鲁西工业装备有限公司 | Nickel alloy and nickel-based cast steel dissimilar steel welding method |
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Application publication date: 20130410 |