CN105081613A - Nickel-based welding rod used for ultralow-temperature steel and preparation method of nickel-based welding rod - Google Patents
Nickel-based welding rod used for ultralow-temperature steel and preparation method of nickel-based welding rod Download PDFInfo
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- CN105081613A CN105081613A CN201510638937.6A CN201510638937A CN105081613A CN 105081613 A CN105081613 A CN 105081613A CN 201510638937 A CN201510638937 A CN 201510638937A CN 105081613 A CN105081613 A CN 105081613A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Abstract
The invention belongs to the technical field of welding materials and particularly relates to a nickel-based welding rod used for ultralow-temperature steel and a preparation method of the nickel-based welding rod. The welding rod comprises a welding core wire, chemical powder and an adhesion agent; the mass ratio between the chemical powder and the welding rod is 25-27:100, and the mass ratio between the chemical powder and the adhesion agent is 100:25-30. When the welding rod prepared through the preparation method is welded, the electric arc is stable, the splatter is slight, the sediment separation is good, the form is beautiful, the welding can be conducted through alternate currents or direct currents, and the all-position operation performance is good. The nickel-based welding rod is mainly used for the nickel-based alloy welding with heat resistance and corrosion resistance requirements, and the nickel-based welding rod can also be used for the welding of some alloy hard to weld and dissimilar steel.
Description
Technical field
The invention belongs to field of welding material, be specially a kind of ultralow temperature steel nickel-base welding rod and preparation method thereof.
Background technology
Along with the extensive utilization of domestic and international 9Ni steel, and the swift and violent increase of LNG storage tank engineering, the demand of ultralow temperature steel welding material also increases rapidly, causes LNG extremely low temperature tank construction costs to improve constantly.Thus, the production domesticization realizing tank material in LNG extremely low temperature tank has great, far-reaching strategic importance.And ultralow temperature concept is not worldwide sought unity of standard, but at present usual by production, storage container and the conveyance conduits such as various liquefied petroleum gas, liquid nitrogen, liquid oxygen and cold district be on active service equipment be called low-temperature equipment, manufacture these equipment steel be called low-temperature steel.And after the serviceability temperature designed is lower than-70 DEG C, just must select external low-temperature steel material.In these materials, especially nickel content is that the serviceability temperature of the steel (U.S. ASTM standard is SA353, hereinafter referred to as 9Ni steel) of 9% is minimum, can lower than less than-196 DEG C.But current China does not also have this ultralow temperature steel welding material to put goods on the market, also do not have pertinent literature to carry out research to this kind of welding material and describe, abroad also multiplex ENiCrMo-4 or ENiCrMo-6 welding rod is used in the storage tank equipment under ultra-low temperature surroundings.
Summary of the invention
The object of the invention is for above technical problem, a kind of ultralow temperature steel nickel-base welding rod meeting AWSA5.11ENiCrFe-9 and require is provided, the 9Ni steel adopting this welding rod to weld and LNG storage tank still have good processing performance and mechanical performance under ultralow temperature, also can be used for some difficult solder alloys, the welding of dissimilar steel.
Another object of the present invention is to provide the preparation method of a kind of ultralow temperature steel nickel-base welding rod with above performance.
To achieve these goals, concrete technical scheme of the present invention is:
A kind of ultralow temperature steel nickel-base welding rod, this welding rod comprises core wire, medicinal powder and binding agent, and wherein, medicinal powder and welding rod quality are than being 25-27:100, and medicinal powder and binding agent mass ratio are 100:25-30.
Core wire Ingredient percent is the mass percent accounting for welding rod with medicinal powder, in medicinal powder each raw material and mass percent as follows:
Marble 7-10%, sodium fluoride 0.4-0.55%, soda ash 0.3-0.4%, ferro-niobium 0.5-0.7%, molybdenum-iron 1.3-1.5%, rutile 2.5-2.8%, quartzy 2.0-3.5%, fluorite 6-8%, crome metal 1.2-1.4%, CMC0.4-0.7%, potash 0.8-1.8%.Binding agent is that under 20 DEG C of conditions, the potassium silicate of 41-43Be ' and the mass ratio of sodium metasilicate are the waterglass of 3:1, and modulus is 3.1M.
As preferably, account for the mass percent of welding rod with medicinal powder, in medicinal powder component raw material and mass percent as follows:
Marble 7.5%, sodium fluoride 0.47%, soda ash 0.33%, ferro-niobium 0.6%, molybdenum-iron 1.4%, rutile 2.65%, quartz 2.8%, fluorite 7%, crome metal 1.3%, CMC0.5%, potash 1.4%.
A preparation method for ultralow temperature steel nickel-base welding rod, comprises the following steps:
Step one, the powder of each for coating composition to be mixed in proportion;
Step 2, the binding agent adding the total composition quality 25-30% of medicinal powder are uniformly mixed (stirring carrying out being not less than 30min), send into welding rod and are coated with and are wrapped on core wire by the pressure of 14-16MPa in press;
Step 3, again through low temperature 80-90 DEG C cure 1.5-2 hour, high temperature 300 DEG C cures and cures for 1-2 hour.
Adopt the welding rod that the present invention prepares, the tensile strength >=650Mpa of its normal temperature deposited metal, yield strength >=400Mpa, percentage elongation >=25% ,-196 DEG C of impacts reach 47J.
In medicinal powder of the present invention, the Main Function of each composition is as follows:
Marble: use marble in welding rod, resolves into CaO and CO under the effect of arc heat
2be in welding rod manufacture and conventional build slag gas generating materials, improve slag basicity, improve deposited metal degree of purity, reduce field trash amount, stable arc increases slag and metal interface tension force and surface tension, improves and takes off slag.
Fluorite: the fusing point of adjustment slag and viscosity, increase the mobility of molten slag, shaping, the de-slag of physical property butt welded seam etc. improving slag plays a crucial role, also be the main material reducing diffusible hydrogen in weld seam, but because of the existence of fluorine, electric arc can be caused unstable, and produce toxic gas, should conservative control ratio.
Quartz: Main Function is slag making, can reduce slag basicity, and to weld seam siliconising, thus can improve arc voltage, refinement molten drop.
Rutile: slag making, stabilising arc, adjusts the fusing point of slag, viscosity, surface tension and mobility, improves appearance of weld, reduces and splashes.
Molybdenum-iron: molybdenum can significantly improve the intensity of weld metal, has the effect of crystal grain thinning, and suitable molybdenum-iron addition can improve the intensity of weld seam, hardness and heat endurance; But too high, can weld metal toughness be affected.
Ferro-niobium: add ferro-niobium and can improve strength plastic and corrosion resistance, but niobium and silicon easily produce Nb4Si is a kind of low-melting compound, therefore suitably should control the content of silicon.
Potash: mainly play stabilising arc effect, and but often make the yellowing of the coating moisture absorption, admittedly need reasonable employment.
Soda ash, CMC: adding soda ash and CMC is extrusion performance in order to improve welding rod.
Marble, fluoride, quartz, rutile is added in medicinal powder component, and the ratio of the various component of rational proportion, ensure that welding rod obtains good mechanical property and welding technological properties, add crome metal, ferro-niobium, molybdenum-iron, etc. component make welding rod obtain suitable deposited metal composition, obtain good mechanical property, add the production technology performance of soda ash, CMC guarantee welding rod, improve the extrusion performance of welding rod.By ensureing that welding rod obtains good processing performance and mechanical property to the ratio of the components such as core wire composition and marble, fluoride, quartz, rutile, crome metal, ferro-niobium, molybdenum-iron, obtain the deposited metal of high purity.
Namely the present invention is coordinated with carbon steel core wire thus is realized its goal of the invention by organic assembly of above-mentioned medicinal powder composition.Core wire can be commercially.
And this welding rod of this patent research is chromium nickel heat-resisting alloy welding rod.Weld seam has excellent plasticity, toughness and cracking resistance.Weld metal all has higher intensity and very strong anti-corrosion capability under room temperature and ultralow temperature, also can be welded with the nickel-base alloy of heat-resisting, anti-corrosion requirement, also can be used for some difficult solder alloys, the welding of dissimilar steel and built-up welding.This welding rod of my company and Wuhan Yiye Steel Structure Co., Ltd.'s joint research and development, solves such welding rod and mainly relies on import, and the deficiency such as the import price height cycle is long, meet the market demand.
Good effect of the present invention is:
(1), effectively improve weld seam overall performance, and welding technological properties is good, arc stability, splash little, appearance of weld is attractive in appearance, de-slag is good, can realize the features such as all-position welding.Preparation method is simple, easy to operate;
(2), this welding rod can use by alternating current-direct current, especially exchanges unloaded low pressure 60V and can ensure that electric arc is smooth, ensure that the applicability under various service condition.Because the deposited metal fusing point of nickel-base welding rod is lower, heat conductivility is poor, molten condition current downflow difference etc., cause this research welding rod to there is the problems such as the spreadability of liquid metal and slag is poor, appearance of weld is poor.In order to ensure weld metal good fluidity, beautiful appearance, therefore the material adding a large amount of shoddye is needed, shoddye material such as fluorite etc. can affect again electric arc arc-stabilising, therefore need to add a large amount of stabilising arc and the material with shoddye effect, as sodium fluoride, potash etc., both ensure that shaping attractive in appearance, in turn ensure that the stability of electric arc.
(3), welding rod of the present invention welding under communication environment, both can reduce arc blow, again can be less than direct current because of required heat input, thus guarantee to obtain better mechanical performance.And welding rod of the present invention is high containing Fe, low containing Mo, Nb, ensure its mechanical performance under ultra-low temperature surroundings by the invigoration effect of W, Cr, compared with external ENiCrMo-3 and ENiCrMo-6 accustomed to using, the welding rod relative cost of this invention is lower.
Detailed description of the invention
Below in conjunction with instantiation, explanation is explained in detail to the present invention, but this should be interpreted as that the above-mentioned subject area of the present invention is only limitted to following embodiment.
Following examples Raw and core wire come from market and buy and obtain; Ultralow temperature steel is welded, detects the performance of deposited metal at normal temperatures.
Embodiment 1
To get it filled powder, account for the mass percent of welding rod with medicinal powder, each component of medicinal powder and mass fraction as follows:
Marble 8%, sodium fluoride 0.5%, soda ash 0.33%, ferro-niobium 0.6%, molybdenum-iron 1.4%, rutile 2.8%, quartz 2.2%, fluorite 7%, crome metal 1.3%, CMC0.5%, potash 1.4%.
Get core wire quality 69.64%, composition meets following requirement (wt%): core wire Ingredient percent is C0.07-0.10%, Mn1.0-1.5, Si≤0.10, S :≤0.004, P≤0.005Cr15.0-17.0, Mo3.5-4.0, Cu≤0.10, Fe4.0-5.0, Nb2.0-2.5, W0.8-1.2, surplus is nickel and trace impurity, and in above core wire, the gross weight of each composition is 100%.
Preparation method is: each for above-mentioned medicinal powder component mixed, and adding the potassium silicate of 41-43Be ' and the mass ratio of sodium metasilicate under the 20 DEG C of conditions accounting for medicinal powder gross mass content 25% is the waterglass of 3:1, and modulus is 3.1M, carries out the stirring of 50min.Be wrapped on core wire on hydraulic type welding rod production equipment with common process.Again through low temperature 80-90 DEG C cure 1.5-2 hour, high temperature 300 DEG C cures and cures for 1-2 hour.
Embodiment 2
To get it filled powder, account for the mass percent of welding rod with medicinal powder, each component of medicinal powder and mass fraction as follows:
Marble 9%, sodium fluoride 0.4%, soda ash 0.33%, ferro-niobium 0.6%, molybdenum-iron 1.5%, rutile 2.7%, quartz 2%, fluorite 7%, crome metal 1.2%, CMC0.5%, potash 1.4%.
Binding agent accounts for medicinal powder gross mass content 28%.
Core wire accounts for 73.42% of total welding rod.
Again through low temperature 80-90 DEG C cure 1.5-2 hour, high temperature 300 DEG C cures and cures for 1-2 hour.
Other operating procedure is as embodiment 1.
Embodiment 3:
One of the present invention special ultralow temperature steel nickel-base welding rod, needs the strict content controlling the impurity element of deposited metal, adopts the excellent silk meeting following component requirements to produce this welding rod, adopts basic slag system to ensure that deposited metal obtains good mechanical property.
To get it filled powder, each component of medicinal powder and mass fraction as follows: marble 7.5%, sodium fluoride 0.47%, soda ash 0.33%, ferro-niobium 0.6%, molybdenum-iron 1.4%, rutile 2.65%, quartz 2.8%, fluorite 7%, crome metal 1.3%, CMC0.5%, potash 1.4%.
Get core wire quality 372.1g, composition meets following requirement (wt%): core wire Ingredient percent is C0.07-0.10%, Mn1.0-1.5, Si≤0.10, S :≤0.004, P≤0.005Cr15.0-17.0, Mo3.5-4.0, Cu≤0.10, Fe4.0-5.0, Nb2.0-2.5, W0.8-1.2, surplus is nickel and trace impurity, and in above core wire, the gross weight of each composition is 100%.
Each for above-mentioned medicinal powder component mixed, add potassium silicate under the 20 DEG C of conditions accounting for medicinal powder gross mass content 29% and sodium metasilicate mass ratio is the waterglass of 3:1, Baume concentration is the stirring of 41-43 ' Be, 40min.Be wrapped on core wire on hydraulic type welding rod production equipment with common process.Again through low temperature 80-90 DEG C cure 1.5-2 hour, high temperature 300 DEG C cures and cures for 1-2 hour.
Welding rod in embodiment 3 is carried out its result of the test of deposited metal mechanical property test as follows:
Table 1 embodiment 3 deposited metal composition
Deposited metal mechanical property in table 2 embodiment 3
Welding rod in embodiment 3 is used for the butt welding of 9Ni steel plate, downhand position buttcover plate mechanical property test result is as follows:
Table 3 adopts 9Ni steel buttcover plate mechanical property (downhand welding) of welding rod in embodiment 3
Welding rod in embodiment 3 is used for the butt welding of 9Ni steel plate, horizontal position buttcover plate mechanical property test result is as follows:
Table 4 adopts 9Ni steel buttcover plate mechanical property (horizontal position welding) of welding rod in embodiment 3
As known from the above, the welding rod prepared in embodiment 1-3, learns that this processing property of electrode is good: alternating current-direct current welding electric arc is all stable, splashing is less, de-slag is good, beautiful appearance, all positon good operation performance after experiment.Stand in horizontal and horizontal position welding, for the butt welding of 9Ni steel, welding joint mechanical property is good, and intensity and low-temperature flexibility all achieve the matched well with mother metal.Its performance meets AWSA5.11ENiCrFe-9 relevant criterion technical requirement.
Claims (8)
1. a ultralow temperature steel nickel-base welding rod, is characterized in that this welding rod comprises core wire, medicinal powder and binding agent, and wherein, medicinal powder and welding rod quality are than being 25-27:100, and medicinal powder and binding agent mass ratio are 100:25-30; Wherein, account for the mass percent of welding rod with medicinal powder, the raw material contained in medicinal powder and mass percent as follows:
Marble 7-10%, sodium fluoride 0.4-0.55%, soda ash 0.3-0.4%, ferro-niobium 0.5-0.7%, molybdenum-iron 1.3-1.5%, rutile 2.5-2.8%, quartzy 2.0-3.5%, fluorite 6-8%, crome metal 1.2-1.4%, CMC0.4-0.7%, potash 0.8-1.8%.
2. a kind of ultralow temperature steel nickel-base welding rod according to claim 1, is characterized in that: account for medicinal powder
The mass percent of welding rod, in medicinal powder component raw material and mass percent as follows:
Marble 7.5%, sodium fluoride 0.47%, soda ash 0.33%, ferro-niobium 0.6%, molybdenum-iron 1.4%, rutile 2.65%, quartz 2.8%, fluorite 7%, crome metal 1.3%, CMC0.5%, potash 1.4%.
3. a kind of ultralow temperature steel nickel-base welding rod according to claim 1, is characterized in that: described binding agent is that under 20 DEG C of conditions, 41-43Be ', potassium silicate and sodium metasilicate mass ratio are the waterglass of 3:1, and modulus is 3.1M.
4. a kind of ultralow temperature steel nickel-base welding rod according to claim 1, is characterized in that described core wire composition is by percentage to the quality: C0.07-0.10, Mn1.0-1.5, Si≤0.10, S≤0.004, P≤0.005, Cr15.0-17.0, Mo3.5-4.0, Cu≤0.10, Fe4.0-5.0, Nb2.0-2.5, W0.8-1.2, surplus is nickel and trace impurity, and in above core wire, the gross mass of each composition is 100%.
5. a kind of ultralow temperature steel nickel-base welding rod according to claim 1, is characterized in that: the tensile strength >=650Mpa of its normal temperature deposited metal, yield strength >=400Mpa, percentage elongation >=25% ,-196 DEG C of impacts reach 47J.
6. the preparation method of a kind of ultralow temperature steel nickel-base welding rod according to any one of claim 1-5, is characterized in that this preparation method comprises the following steps:
Step one, the powder of each for coating composition to be mixed in proportion;
Step 2, the binding agent adding the total composition quality 25-30% of medicinal powder are uniformly mixed, and send into welding rod and are coated with and are wrapped on core wire by the pressure of 14-16MPa in press;
Step 3, again through low temperature 80-90 DEG C cure 1.5-2 hour, high temperature 300 DEG C cures and cures for 1-2 hour.
7. the preparation method of a kind of ultralow temperature steel nickel-base welding rod according to claim 6, is characterized in that: step 3 for again through low temperature 88 DEG C cure 2 hours, high temperature 300 DEG C cures and cures for 1.5 hours.
8. the preparation method of a kind of ultralow temperature steel nickel-base welding rod according to claim 6, is characterized in that: described binding agent is uniformly mixed, its mixing time >=30min.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105710559A (en) * | 2016-04-19 | 2016-06-29 | 南通豪泰焊材有限公司 | Nickel-based alloy welding rod and manufacturing method thereof |
| CN106112312A (en) * | 2016-08-24 | 2016-11-16 | 四川大西洋焊接材料股份有限公司 | Nichrome steel nickel-base welding rod and production method thereof for military project pneumatic system |
| CN106514049A (en) * | 2016-12-26 | 2017-03-22 | 钢铁研究总院 | Nickel-based welding rod for welding of ultralow-temperature container steel |
| CN107442968A (en) * | 2017-09-29 | 2017-12-08 | 四川西冶新材料股份有限公司 | For welding the welding rod and its production method of nickel-base alloy or the welding of Ni9% steel |
| CN107931888A (en) * | 2017-11-27 | 2018-04-20 | 四川大西洋焊接材料股份有限公司 | Hydroelectric project high tensile steel electrode and preparation method thereof |
| CN110253176A (en) * | 2019-05-30 | 2019-09-20 | 株洲湘江电焊条有限公司 | Welding rod and preparation method thereof suitable for AC power source welding natural gas storage tank |
| CN111151921A (en) * | 2020-01-19 | 2020-05-15 | 中国石油集团济柴动力有限公司成都压缩机分公司 | Preparation method of welding rod matched with steel for reciprocating compressor unit |
| CN111618479A (en) * | 2020-06-28 | 2020-09-04 | 昆山京群焊材科技有限公司 | Welding rod for 5% Ni steel and preparation method thereof |
| CN114211153A (en) * | 2021-12-02 | 2022-03-22 | 钢铁研究总院 | LNG ultralow-temperature steel welding method based on nickel-based welding rods |
| CN115975513A (en) * | 2023-03-16 | 2023-04-18 | 天津市金桥焊材集团股份有限公司 | Binder for producing welding electrode |
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| CN105710559A (en) * | 2016-04-19 | 2016-06-29 | 南通豪泰焊材有限公司 | Nickel-based alloy welding rod and manufacturing method thereof |
| CN106112312A (en) * | 2016-08-24 | 2016-11-16 | 四川大西洋焊接材料股份有限公司 | Nichrome steel nickel-base welding rod and production method thereof for military project pneumatic system |
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| CN107442968B (en) * | 2017-09-29 | 2019-12-24 | 四川西冶新材料股份有限公司 | Welding rod for welding nickel-based alloy or Ni9% steel and production method thereof |
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| CN107931888A (en) * | 2017-11-27 | 2018-04-20 | 四川大西洋焊接材料股份有限公司 | Hydroelectric project high tensile steel electrode and preparation method thereof |
| CN107931888B (en) * | 2017-11-27 | 2020-10-20 | 四川大西洋焊接材料股份有限公司 | High-strength steel welding rod for hydroelectric engineering and preparation method thereof |
| CN110253176A (en) * | 2019-05-30 | 2019-09-20 | 株洲湘江电焊条有限公司 | Welding rod and preparation method thereof suitable for AC power source welding natural gas storage tank |
| CN110253176B (en) * | 2019-05-30 | 2021-06-25 | 株洲湘江电焊条有限公司 | Welding electrode suitable for AC power supply to weld natural gas storage tank and preparation method thereof |
| CN111151921A (en) * | 2020-01-19 | 2020-05-15 | 中国石油集团济柴动力有限公司成都压缩机分公司 | Preparation method of welding rod matched with steel for reciprocating compressor unit |
| CN111618479A (en) * | 2020-06-28 | 2020-09-04 | 昆山京群焊材科技有限公司 | Welding rod for 5% Ni steel and preparation method thereof |
| CN114211153A (en) * | 2021-12-02 | 2022-03-22 | 钢铁研究总院 | LNG ultralow-temperature steel welding method based on nickel-based welding rods |
| CN115975513A (en) * | 2023-03-16 | 2023-04-18 | 天津市金桥焊材集团股份有限公司 | Binder for producing welding electrode |
| CN115975513B (en) * | 2023-03-16 | 2023-08-04 | 天津市金桥焊材集团股份有限公司 | Adhesive for producing welding rod |
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