CN110640353A - Welding wire material and preparation method thereof - Google Patents
Welding wire material and preparation method thereof Download PDFInfo
- Publication number
- CN110640353A CN110640353A CN201911111718.7A CN201911111718A CN110640353A CN 110640353 A CN110640353 A CN 110640353A CN 201911111718 A CN201911111718 A CN 201911111718A CN 110640353 A CN110640353 A CN 110640353A
- Authority
- CN
- China
- Prior art keywords
- metal
- temperature
- heating
- hours
- cogging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B23K35/304—Ni as the principal constituent with Cr as the next major 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
- B23K35/40—Making wire or rods for soldering or welding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a welding wire material, which comprises the following components: 0.35 to 0.55 wt% Mn; 15.5-16 wt% of Cr; 16-16.5 wt% of Mo; co is less than or equal to 0.3 wt%; cu is less than or equal to 0.05 wt%; 5.4-5.8 wt% Fe; 0.15 to 0.2 wt% of V; 3.6-4.2 wt% of W; o is less than or equal to 0.002 wt%; n is less than or equal to 0.005 wt%; p is less than or equal to 0.005 wt%; al is less than or equal to 0.05 wt%; ce is less than or equal to 0.02wt percent; mg is less than or equal to 0.08 wt%; the balance being Ni. The invention manufactures the alloy by optimizing the smelting process, the heating process in the forging and cogging process, the deformation process and the heating process in the rolling process of the alloy with the components
Description
Technical Field
The invention relates to the technical field of welding, in particular to a welding wire material and a preparation method thereof.
Background
The manufacturing technology and market of the related matched welding material of the 9Ni steel are monopolized by a few international and multinational companies, and the welding material for building the LNG storage tank in China completely depends on import at present, so that the comprehensive and independent production of the LNG storage tank in China is challenged. Compared with the foreign development and industrial production of 9Ni steel and the matched welding material thereof, the development of the welding process and the welding material in China is still at the initial stage, and no report shows that the domestic 9Ni steel matched welding material is applied to the actual engineering.
Disclosure of Invention
In view of the above, the present invention provides a welding wire material and a preparation method thereof, and the welding wire material provided by the present invention can be used in combination with 9Ni steel.
The invention provides a welding wire material, which comprises the following components:
C≤0.008wt％；
0.35 to 0.55 wt% Mn;
Si≤0.06wt％；
S≤0.002wt％；
15.5-16 wt% of Cr;
16-16.5 wt% of Mo;
Co≤0.3wt％；
Cu≤0.05wt％；
5.4-5.8 wt% Fe;
0.15 to 0.2 wt% of V;
3.6-4.2 wt% of W;
O≤0.002wt％；
N≤0.005wt％；
P≤0.005wt％；
Al≤0.05wt％；
Ce≤0.02wt％；
Mg≤0.08wt％；
the balance being Ni.
In the present invention, the mass content of C is preferably 0.001 to 0.008%, and more preferably 0.002 to 0.007%. More preferably 0.003-0.006%, most preferably 0.004-0.005%; the mass content of Mn is preferably 0.4-0.5%, and more preferably 0.45%; the mass content of the Si is preferably 0.01-0.06%, more preferably 0.02-0.05%, and most preferably 0.03-0.04%; the mass content of S is preferably 0.001-0.002%, and more preferably 0.0015%; the mass content of Cr is preferably 15.6-15.9%, and more preferably 15.7-15.8%; the mass content of Mo is preferably 16.1-16.4%, and more preferably 16.2-16.3%; the mass content of Co is preferably 0.1-0.3%, and more preferably 0.2%; the mass content of Cu is preferably 0.01-0.05%, more preferably 0.02-0.04%, and most preferably 0.03%; the mass content of the Fe is preferably 5.5-5.7%, and more preferably 5.6%; the mass content of V is preferably 0.16-0.19%, and more preferably 0.17-0.18%; the mass content of W is preferably 3.7-4.1%, more preferably 3.8-4%, and most preferably 3.9%; the mass content of O is preferably 0.001-0.002%, more preferably 0.0015%; the mass content of N is preferably 0.001-0.005%, more preferably 0.002-0.004%, and most preferably 0.003%; the mass content of P is preferably 0.001-0.005%, more preferably 0.002-0.004%, and most preferably 0.003%; the mass content of the Al is preferably 0.01-0.05%, more preferably 0.02-0.04%, and most preferably 0.03%; the mass content of Ce is preferably 0.01-0.02%, and more preferably 0.015%; the mass content of Mg is preferably 0.01-0.08%, more preferably 0.02-0.06%, and most preferably 0.03-0.05%.
The invention provides a preparation method of a welding wire material in the technical scheme, which comprises the following steps:
smelting alloy raw materials and then casting to obtain a cast ingot;
and (3) homogenizing, primary heating, cogging, secondary heating and rolling the cast ingot in sequence to obtain the welding wire material.
In the present invention, the method for smelting preferably includes:
firstly carrying out vacuum induction melting and then carrying out vacuum consumable remelting.
In the present invention, the method of vacuum induction melting preferably includes:
the alloy raw materials are sequentially subjected to batching, charging, melting, refining, alloying and casting.
In the invention, the alloy raw material is preferably high-purity raw material so as to accurately control main elements of the welding wire material and reduce the content of residual elements; the alloy preferably comprises: metal Ni, metal Cr, metal W, metal Mo, metal Al, pure iron, Ni-Mg alloy, metal Ce and metal Mn; the metal Ni, the metal Cr, the metal W, the metal Mo, the metal Al and the metal Ce are preferably pure metal materials; the metal Mn is preferably electrolytic manganese; the pure iron is preferably ultra-low carbon pure iron, and the mass content of carbon in the ultra-low carbon pure iron is preferably less than or equal to 0.005 wt%.
In the invention, the alloy raw materials are used in an amount that the components of the obtained welding wire material are consistent with those of the welding wire material in the technical scheme, and the alloy raw materials are mixed according to the content of each element in the welding wire material in the technical scheme. In the present invention, precise dosing is preferred in the dosing process.
In the present invention, the charging method preferably includes:
the charging bed charge consists of metal Ni, pure iron, metal Cr, metal Mo, metal W, metal Nb and high-melting-point elements of C, and part of metal Ni, pure iron and C are placed in the middle of the crucible; the charging sequence is preferably as follows: adding pure iron, small intermediate alloy, metal Ni, carbon block (center), pure iron, metal Ni, metal Cr, metal W, metal Mo, pure iron and metal Ni in sequence; after the bottom material is refined, preferably alloying by adopting metal Al and metal Ce; finally adding Ni-Mg alloy and metal Mn.
In the invention, before the metal Mn is added in the charging process, inert gas of 45-55 torr is preferably charged in the vacuum furnace to reduce the volatilization of Mn element; the inert gas is preferably 50 torr; the inert gas is preferably argon.
In the invention, the temperature of the vacuum induction melting is preferably 1500-1550 ℃, more preferably 1510-1540 ℃, and most preferably 1520-1530 ℃; the vacuum degree of the vacuum induction melting is preferably 0.5-1 Pa, more preferably 0.6-0.9 Pa, and most preferably 0.7-0.8 Pa.
The invention can reduce the N content in the alloy by adjusting the charging sequence and adopting a sectional furnace power frequency stirring method.
In the present invention, the deoxidation method in the vacuum induction melting process is preferably: on the premise of not adopting Ca deoxidation, Ni-Mg alloy, rare earth and metal Al are adopted for deoxidation so as to reduce the content of O; the method of deoxygenation is more preferably:
carbon deoxidation, Al deoxidation, Ce deoxidation and Mg deoxidation are carried out in sequence.
In the present invention, the method of deoxidation is most preferably:
and partial carbon blocks and metal Al are loaded along with the furnace for early-stage deoxidation, partial carbon blocks and metal Al are added after material leveling, metal Ce is added for deep deoxidation after refining, and metal Mg or Ni-Mg alloy is added for deoxidation before tapping. (deoxidation operation can be carried out in combination with the above charging mode)
In the invention, the vacuum degree in the deoxidation process is preferably less than 1Pa, more preferably 0.5-0.8 Pa, and most preferably 0.6-0.7 Pa.
In the invention, in the refining process, the refining time is preferably prolonged, the refining temperature is preferably increased, the C/O reaction is increased, and the C content is preferably reduced; preferably, vacuum and high-temperature refining is adopted, wherein the refining temperature is preferably 1530-1550 ℃, more preferably 1535-1545 ℃, and most preferably 1540 ℃; the vacuum degree of the refining is preferably less than 1Pa, more preferably 0.5-0.8 Pa, and most preferably 0.6-0.7 Pa.
In the invention, the vacuum induction melting process is preferably desulfurized so as to improve the purity of the alloy and reduce the level of alloy inclusions; the desulfurization method is preferably as follows: and sequentially carrying out slag desulfurization, Ce desulfurization and Mg desulfurization.
In the present invention, the desulfurization method is most preferably:
and slag charge is loaded along with the furnace for early-stage desulfurization, Ce is added for desulfurization after refining, and Mg is added for desulfurization before tapping. (desulfurization may be performed in conjunction with the above charging mode) in the present invention, the slag preferably includes:
20 to 24 wt% of Al2O3；
2.4～3.6 wt% TiO2；
18-22 wt% CaO;
4.2 to 5.8 wt% of MgO;
45-51 wt% of CaF2。
In the invention, the vacuum degree in the desulfurization process is preferably less than 1Pa, and more preferably 0.5-0.8. Pa, most preferably 0.6 to 0.7 Pa.
In the invention, the components in the furnace are preferably and timely analyzed in the vacuum induction melting process to ensure that the chemical components are controlled, a steel standard can be prepared in the analysis process, a sample is taken from the furnace during melting, powder is prepared for analyzing C, S element content, a block sample is prepared, and the contents of other elements are analyzed by adopting a spectrum.
In the present invention, the vacuum consumable remelting method preferably comprises:
and performing consumable remelting on a casting (electrode) obtained after vacuum induction melting and pouring, and then performing ingot removal to obtain an ingot.
In the invention, the melting speed is preferably properly reduced in the vacuum consumable remelting process, and the melting speed in the vacuum consumable remelting process is preferably 3-3.5 kg/min, more preferably 3.1-3.4 kg/min, and most preferably 3.2-3.3 kg/min.
In the present invention, the degree of vacuum of the vacuum consumable remelting is preferably 0.13Pa or less, more preferably 0.1Pa or less.
In the invention, in the vacuum consumable remelting process, the segregation of alloy chemical components is preferably reduced by adopting a helium cooling method, and the flow rate of helium is preferably 250-350 Pa, more preferably 280-320 Pa, and most preferably 300 Pa.
The welding wire provided by the invention is made of the nickel-based alloy, and the melting method of the invention performs ultra-low carbon control, vacuum desulfurization, deoxidation and denitrification on the nickel-based alloy, thereby realizing accurate control on chemical components.
In the present invention, the method of the homogenization treatment preferably includes:
and charging and heating the ingot at the temperature lower than 700 ℃, heating to 1170-1190 ℃ for 7-9 hours, and preserving heat for 35-45 hours.
In the invention, the charging and heating temperature is preferably 650-700 ℃, more preferably 660-690 ℃, and more preferably 670-680 ℃; the heating time is preferably 7.5-8.5 hours, and more preferably 8 hours; the temperature rise is preferably 1175-1185 ℃, and is more preferably 1180 ℃; the heat preservation time is preferably 38-42 hours; more preferably 40 hours.
In the present invention, the method of primary heating preferably includes:
and cooling the homogenized product along with a furnace, preserving heat, then heating to 1130-1150 ℃ within 0.5-1.5 hours, and preserving heat for 3-5 hours.
In the invention, the furnace cooling time is preferably 2.5-3.5 hours, and more preferably 3 hours; the temperature of the temperature reduction is preferably 1000-1200 ℃, more preferably 1050-1150 ℃, and most preferably 1100 ℃; the temperature reduction heat preservation time is preferably 0.5-1.5 hours, and more preferably 1 hour. In the invention, the time of temperature rise is preferably 1 hour, and the temperature rise is preferably 1135-1145 ℃, and more preferably 1140 ℃; the time for heat preservation after temperature rise is preferably 3.5-4.5 hours, and more preferably 4 hours.
In the invention, the product after primary heating is preferably 305-406 mm in diameter, more preferably 320-380 mm, more preferably 340-360 mm, and most preferably 305mm or 406mm in diameter.
In the present invention, the cogging is preferably performed by an electro-hydraulic hammer, and more preferably, the homogenized product is first subjected to primary cogging by an electro-hydraulic hammer to 120 square, then heated, and then subjected to secondary cogging by an electro-hydraulic hammer to 50 square.
In the invention, the electro-hydraulic hammer of 3-5 tons is preferably adopted for multiple fire times and one-time cogging to 120 square, and more preferably, the electro-hydraulic hammer is adopted for 2-5 fire times and one-time cogging to 120 square.
In the present invention, the heating method is preferably:
and charging the product subjected to primary cogging at a temperature lower than 700 ℃ and heating for 2.5-3.5 hours to 1130-1150 ℃, and preserving heat for 1.5-2.5 hours.
In the invention, the charging temperature is preferably 20-700 ℃, more preferably 100-600 ℃, more preferably 200-500 ℃, and most preferably 300-400 ℃. In the invention, the heating time is preferably 3 hours, and the temperature rise temperature is preferably 1135-1145 ℃, and more preferably 1140 ℃; the incubation time is preferably 2 hours.
In the invention, the electric hydraulic hammer of 1 ton performs multiple-fire cogging to 50 square preferably, and performs 3-6-fire cogging to 50 square more preferably.
In the invention, the forging temperature in the cogging (primary cogging and secondary cogging) process is preferably equal to or more than 1050 ℃, more preferably 1050-1140 ℃, more preferably 1080-1120 ℃, and most preferably 1100 ℃; the finish forging temperature in the cogging process is preferably not less than 950 ℃, more preferably 950-1140 ℃, more preferably 1000-1100 ℃, and most preferably 1130-1170 ℃; the time of the furnace returning and heat preservation in the cogging process is preferably 40-60 minutes, more preferably 45-55 minutes, and most preferably 50 minutes.
In the invention, the temperature of the secondary heating is preferably 1110-1130 ℃, more preferably 1115-1125 ℃, and most preferably 1120 ℃; the heating time of the secondary heating is preferably not less than 2 hours, more preferably 2-4 hours, and most preferably 3 hours; the heat preservation time of the secondary heating is preferably not less than 30min, more preferably 30-90 min, more preferably 40-80 min, more preferably 50-70 min, and most preferably 60 min.
In the present invention, the rolling is preferably porous type hot rolling. In the present invention, the rolling is preferably performed in two steps, and more preferably, the product after the second heating is first rolled once
Heating the bar billet, and then performing secondary rolling to obtain the bar billet
A welding wire material.
In the invention, the heating temperature is preferably 1110-1130 ℃, more preferably 1115-1125 ℃, and most preferably 1120 ℃; the heating time is preferably not less than 1.5 hours, more preferably 1.5-3 hours, and most preferably 2-2.5 hours; the heating heat preservation time is preferably not less than 30min, more preferably 30-90 min, more preferably 40-80 min, more preferably 50-70 min, and most preferably 60 min.
In the invention, the initial rolling temperature in the rolling (primary rolling and secondary rolling) process is preferably equal to or more than 1050 ℃, more preferably 1050-1140 ℃, more preferably 1080-1120 ℃, and most preferably 1100 ℃; the finishing temperature is preferably not less than 900 ℃, more preferably 900-1140 ℃, more preferably 950-1100 ℃, and most preferably 1000-1050 ℃; the final heat deformation amount (deformation amount of the last heat rolling) is preferably not less than 30%. In the invention, in the rolling (primary rolling and secondary rolling) process, because the alloy has great deformation resistance, the rolling can not be performed, the temperature is reduced to 900 ℃, the tempering is performed after the remelting and heating are needed, and the tempering temperature is preferably 1130-1150 ℃, more preferably 1135-1145 ℃, and most preferably 1140 ℃; the tempering time is preferably 30-90 minutes, more preferably 40-80 minutes, more preferably 50-70 minutes, and most preferably 60 minutes.
The welding wire material provided by the invention is a nickel-based alloy containing 4.2 wt% of W and 16.5 wt% of Mo, and the content of Mo and W elements is high, so that the deformation resistance and the deformation difference of the alloy in the hot working process are high; the invention manufactures the alloy by optimizing the smelting process, the heating process in the forging and cogging process, the deformation process and the heating process in the rolling process of the alloy with the components
The disk of (1). The welding wire material provided by the invention can be applied to the construction of an LNG storage tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other examples, which may be modified or appreciated by those of ordinary skill in the art based on the examples given herein, are intended to be within the scope of the present invention.
Example 1
The method comprises the following steps of carrying out vacuum induction melting on metal Ni, metal Cr, metal W, metal Mo, metal Al, pure iron, Ni-Mg alloy, metal Ce, metal Mn, metal Nb and carbon block alloy raw materials, wherein an initial charging in a crucible during charging is composed of metal Ni, pure iron, metal Cr, metal Mo, metal W, metal Nb and high-melting-point elements of a carbon block, and part of metal Ni, pure iron and the carbon block are placed in the middle of the crucible.
Refining the initial furnace burden, and then adding metal Al and metal Ce for alloying; the refining temperature is 1540 ℃, and the refining vacuum degree is 0.8 Pa.
And finally adding Ni-Mg alloy and metal Mn after the alloying is finished, and filling 50 torr of inert gas argon in the vacuum furnace before the metal Mn is added so as to reduce volatilization.
In the charging process, partial carbon blocks are charged along with the furnace, then metal Al is added for early-stage deoxidation, metal Ce is added for deep deoxidation after refining, Ni-Mg alloy is added for Mg deoxidation before tapping, and the vacuum degree in the deoxidation process is 0.8 Pa.
The method comprises the steps of charging slag materials along with a furnace in the charging process for early-stage desulfurization, adding metal Ce for desulfurization after refining, adding Ni-Mg alloy for Mg desulfurization before tapping, and keeping the vacuum degree of 1Pa in the desulfurization process.
And pouring the alloy liquid obtained after vacuum induction melting to obtain the ingot casting electrode.
Carrying out vacuum consumable remelting on the ingot casting electrode, and then removing the ingot to obtain an ingot casting with the diameter of 305 mm; the melting speed in the vacuum consumable remelting process is 3.3 kg/min; and the vacuum consumable remelting process adopts nitrogen for cooling, and the flow rate of the nitrogen is 300 Pa.
And charging and heating the cast ingot at the temperature of less than 700 ℃, heating the cast ingot to 1180 ℃ for 8 hours, and preserving the temperature for 40 hours for homogenization treatment.
Cooling the homogenized product in a furnace for 3 hours to 1100 ℃, preserving heat for 1 hour, then heating to 1140 ℃ in 1 hour, and preserving heat for 4 hours.
And (3) cogging the heated product to 120mm square billet by adopting a 3-5 ton electro-hydraulic hammer for 4 times, wherein the cogging temperature in the cogging process is 1100 ℃, and the finish forging temperature is 1080 ℃.
And (3) charging the cogging product at a temperature lower than 700 ℃ for heating, heating to 1140 ℃ for 3 hours, preserving heat for 2 hours, and cogging for 5 times to 50mm square billets by adopting a 1-ton electro-hydraulic hammer, wherein the cogging temperature in the cogging process is 1100 ℃ and the finish forging temperature is 1080 ℃.
The above-mentioned cogging product was heated to 1120 ℃ over 3 hours and held for 60 minutes.
And (3) carrying out porous hot rolling on the heated product to obtain a round bar with the diameter of 25mm, wherein the initial rolling temperature in the hot rolling process is 1100 ℃, and the final rolling temperature is 1060 ℃.
The rolled product is heated to 1120 ℃ for 60min in 2 hours.
And (3) carrying out porous hot rolling on the heated product to obtain a round bar with the diameter of 8mm, and obtaining a welding wire material, wherein the initial rolling temperature in the hot rolling process is 1100 ℃, and the final rolling temperature is 1060 ℃.
The deformation of the last hot rolling in the two porous hot rolling processes is not less than 30%, the temperature is reduced to be below 900 ℃ in the rolling process, the furnace is returned and heated again for tempering, the tempering temperature is 1140 ℃, and the tempering time is 60 minutes.
The welding wire material prepared in the embodiment 1 of the invention is subjected to component detection according to the GB223 standard, and the detection result is as follows:
the performance of the welding wire material prepared in the embodiment 1 of the invention is detected according to the standards of GB/T228-2010 room temperature test method for tensile test of the metal material and GB/T229-2007 method for impact test of the metal material Charpy pendulum, and the detection results are as follows:
| tensile strength of MPa | Yield strength: MPa of | Surface shrinkage rate: is based on | V shape ballistic work (J, -196 ℃ C.) |
| 736/724 | 474/469 | 42/35.5 | 71/71/70 |
Example 2
The method comprises the following steps of carrying out vacuum induction melting on metal Ni, metal Cr, metal W, metal Mo, metal Al, pure iron, Ni-Mg alloy, metal Ce, metal Mn, metal Nb and carbon block alloy raw materials, wherein an initial charging in a crucible during charging is composed of metal Ni, pure iron, metal Cr, metal Mo, metal W, metal Nb and high-melting-point elements of a carbon block, and part of metal Ni, pure iron and the carbon block are placed in the middle of the crucible.
Refining the initial furnace burden, and then adding metal Al and metal Ce for alloying; the refining temperature is 1530 ℃, and the vacuum degree of the refining is 0.6 Pa.
And finally adding Ni-Mg alloy and metal Mn after the alloying is finished, and filling 50 torr of inert gas argon in the vacuum furnace before the metal Mn is added so as to reduce volatilization.
In the charging process, partial carbon blocks are charged along with the furnace, then metal Al is added for early-stage deoxidation, metal Ce is added for deep deoxidation after refining, Ni-Mg alloy is added for Mg deoxidation before tapping, and the vacuum degree in the deoxidation process is 0.8 Pa.
The method comprises the steps of charging slag materials along with a furnace in the charging process for early-stage desulfurization, adding metal Ce for desulfurization after refining, adding Ni-Mg alloy for Mg desulfurization before tapping, and keeping the vacuum degree of 1Pa in the desulfurization process.
And pouring the alloy liquid obtained after vacuum induction melting to obtain the ingot casting electrode.
Carrying out vacuum consumable remelting on the ingot casting electrode, and then removing the ingot to obtain an ingot casting with the diameter of 305 mm; the melting speed in the vacuum consumable remelting process is 3.0 kg/min; and cooling by adopting nitrogen in the vacuum consumable remelting process, wherein the flow of the nitrogen is 200 Pa.
And charging and heating the cast ingot at the temperature of less than 700 ℃, heating the cast ingot to 1180 ℃ for 8 hours, and preserving the temperature for 40 hours for homogenization treatment.
And cooling the homogenized product along with a furnace for 3 hours to 1100 ℃, preserving heat for 1 hour, then heating to 1150 ℃ within 1 hour, and preserving heat for 4 hours.
And (3) cogging the heated product to 120mm square billet by adopting a 3-5 ton electro-hydraulic hammer for 4 times, wherein the cogging temperature in the cogging process is 1100 ℃, and the finish forging temperature is 1080 ℃.
And (3) charging and heating the cogging product at a temperature lower than 700 ℃, heating to 1150 ℃ for 3 hours, preserving heat for 2 hours, and cogging for 5 times to 50mm square billets by adopting a 1-ton electro-hydraulic hammer, wherein the cogging temperature in the cogging process is 1100 ℃ and the finish forging temperature is 1080 ℃.
The above-mentioned cogging product was heated to 1130 ℃ over 3 hours and the temperature was maintained for 60 minutes.
And (3) carrying out porous hot rolling on the heated product to obtain a round bar with the diameter of 25mm, wherein the initial rolling temperature in the hot rolling process is 1100 ℃, and the final rolling temperature is 1060 ℃.
The rolled product is heated to 1130 ℃ for 60min in 2 hours.
And (3) carrying out porous hot rolling on the heated product to obtain a round bar with the diameter of 8mm, and obtaining a welding wire material, wherein the initial rolling temperature in the hot rolling process is 1100 ℃, and the final rolling temperature is 1060 ℃.
The deformation of the last hot rolling in the two porous hot rolling processes is not less than 30%, the temperature is reduced to be below 900 ℃ in the rolling process, the furnace is returned and heated again for tempering, the tempering temperature is 1140 ℃, and the tempering time is 60 minutes.
The welding wire material prepared in example 2 of the present invention was subjected to composition measurement by the method of example 1, and the measurement results were
According to the method of the embodiment 1, the performance of the welding wire prepared in the embodiment 2 of the invention is detected, and the detection result is as follows:
| tensile strength of MPa | Yield strength: MPa of | Surface shrinkage rate: is based on | V shape ballistic work (J, -196 ℃ C.) |
| 745/720 | 484/465 | 35/25.5 | 71/71/70 |
Example 3
The method comprises the following steps of carrying out vacuum induction melting on metal Ni, metal Cr, metal W, metal Mo, metal Al, pure iron, Ni-Mg alloy, metal Ce, metal Mn, metal Nb and carbon block alloy raw materials, wherein an initial charging in a crucible during charging is composed of metal Ni, pure iron, metal Cr, metal Mo, metal W, metal Nb and high-melting-point elements of a carbon block, and part of metal Ni, pure iron and the carbon block are placed in the middle of the crucible.
Refining the initial furnace burden, and then adding metal Al and metal Ce for alloying; the refining temperature is 1550 ℃, and the refining vacuum degree is 0.7 Pa.
And finally adding Ni-Mg alloy and metal Mn after the alloying is finished, and filling 50 torr of inert gas argon in the vacuum furnace before the metal Mn is added so as to reduce volatilization.
In the charging process, partial carbon blocks are charged along with the furnace, then metal Al is added for early-stage deoxidation, metal Ce is added for deep deoxidation after refining, Ni-Mg alloy is added for Mg deoxidation before tapping, and the vacuum degree in the deoxidation process is 1 Pa.
The method comprises the steps of charging slag materials along with a furnace in the charging process for early-stage desulfurization, adding metal Ce for desulfurization after refining, adding Ni-Mg alloy for Mg desulfurization before tapping, and controlling the vacuum degree in the desulfurization process to be 0.6 Pa.
And pouring the alloy liquid obtained after vacuum induction melting to obtain the ingot casting electrode.
Carrying out vacuum consumable remelting on the ingot casting electrode, and then removing the ingot to obtain an ingot casting with the diameter of 305 mm; the melting speed in the vacuum consumable remelting process is 3.5 kg/min; and cooling by adopting nitrogen in the vacuum consumable remelting process, wherein the flow of the nitrogen is 250 Pa.
And charging and heating the cast ingot at the temperature of less than 700 ℃, heating the cast ingot to 1180 ℃ for 8 hours, and preserving the temperature for 40 hours for homogenization treatment.
And cooling the homogenized product along with a furnace for 3 hours to 1100 ℃, preserving heat for 1 hour, then heating to 1160 ℃ within 1 hour, and preserving heat for 4 hours.
And (3) cogging the heated product to 120mm square billet by adopting a 3-5 ton electro-hydraulic hammer for 4 times, wherein the cogging temperature in the cogging process is 1100 ℃, and the finish forging temperature is 1080 ℃.
And (3) charging and heating the cogging product at the temperature of less than 700 ℃, heating to 1160 ℃ for 3 hours, preserving heat for 2 hours, and cogging for 5 times to 50mm square billets by adopting a 1-ton electro-hydraulic hammer, wherein the cogging temperature in the cogging process is 1100 ℃ and the finish forging temperature is 1080 ℃.
The above-mentioned cogging product was heated to 1120 ℃ over 3 hours and held for 60 minutes.
And (3) carrying out porous hot rolling on the heated product to obtain a round bar with the diameter of 25mm, wherein the initial rolling temperature in the hot rolling process is 1100 ℃, and the final rolling temperature is 1060 ℃.
And heating the rolled product to 1140 ℃ for 2 hours and preserving the heat for 60 min.
And (3) carrying out porous hot rolling on the heated product to obtain a round bar with the diameter of 8mm, and obtaining a welding wire material, wherein the initial rolling temperature in the hot rolling process is 1100 ℃, and the final rolling temperature is 1060 ℃.
The deformation of the last hot rolling in the two porous hot rolling processes is not less than 30%, the temperature is reduced to be below 900 ℃ in the rolling process, the furnace is returned and heated again for tempering, the tempering temperature is 1140 ℃, and the tempering time is 60 minutes.
The component detection is carried out on the welding wire material prepared in the embodiment 3 of the invention according to the method of the embodiment 1, and the detection result is as follows:
according to the method of the embodiment 1, the performance of the welding wire prepared in the embodiment 3 of the invention is detected, and the detection result is as follows:
| tensile strength of MPa | Yield strength: MPa of | Surface shrinkage rate: is based on | AKV(J、-196℃) |
| 730/726 | 474/460 | 35/25.5 | 70/70/72 |
From the above embodiment, the present invention provides a welding wire material, which comprises the following components: 0.35 to 0.55 wt% Mn; 15.5-16 wt% of Cr; 16-16.5 wt% of Mo; co is less than or equal to 0.3 wt%; cu is less than or equal to 0.05 wt%; 5.4-5.8 wt% Fe; 0.15 to 0.2 wt% of V; 3.6 &4.2 wt% W; o is less than or equal to 0.002 wt%; n is less than or equal to 0.005 wt%; p is less than or equal to 0.005 wt%; al is less than or equal to 0.05 wt%; ce is less than or equal to 0.02wt percent; mg is less than or equal to 0.08 wt%; the balance being Ni. The invention manufactures the alloy by optimizing the smelting process, the heating process in the forging and cogging process, the deformation process and the heating process in the rolling process of the alloy with the components
The disk of (1). The welding wire material provided by the invention can be applied to the construction of an LNG storage tank.
While only the preferred embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A welding wire material comprises the following components:
C≤0.008wt％；
0.35 to 0.55 wt% Mn;
Si≤0.06wt％；
S≤0.002wt％；
15.5-16 wt% of Cr;
16-16.5 wt% of Mo;
Co≤0.3wt％；
Cu≤0.05wt％；
5.4-5.8 wt% Fe;
0.15 to 0.2 wt% of V;
3.6-4.2 wt% of W;
O≤0.002wt％；
N≤0.005wt％；
P≤0.005wt％；
Al≤0.05wt％；
Ce≤0.02wt％；
Mg≤0.08wt％；
the balance being Ni.
2. A method of preparing the welding wire material of claim 1, comprising:
smelting alloy raw materials and then casting to obtain a cast ingot;
and (3) homogenizing, primary heating, cogging, secondary heating and rolling the cast ingot in sequence to obtain the welding wire material.
3. The method of claim 2, wherein the method of smelting comprises:
firstly carrying out vacuum induction melting and then carrying out vacuum consumable remelting.
4. The method of claim 3, wherein the temperature of the vacuum induction melting is 1530-1550 ℃.
5. The method of claim 3, wherein the vacuum consumable remelting melt rate is 3.0-3.5 kg/min.
6. The method of claim 2, wherein the method of homogenizing comprises:
and charging and heating the ingot at the temperature lower than 700 ℃, heating to 1170-1190 ℃ for 7-9 hours, and preserving heat for 35-45 hours.
7. The method of claim 2, wherein the method of primary heating comprises:
cooling the homogenized product along with a furnace, preserving heat, then heating to 1130-1150 ℃ within 0.5-1.5 hours, and preserving heat for 3-5 hours;
the furnace cooling time is 2.5-3.5 hours;
the temperature for cooling is 1000-1200 ℃;
and the heat preservation time after cooling is 0.5-1.5 hours.
8. The method of claim 2, wherein the method of cogging comprises:
and performing electro-hydraulic hammer primary cogging on the homogenized product to 120 square, heating, and performing electro-hydraulic hammer secondary cogging to 50 square.
9. The method according to claim 2, wherein the secondary heating temperature is 1110 to 1130 ℃.
10. The method according to claim 2, wherein the initial rolling temperature of the rolling is 1050 ℃ or more; the finishing temperature is more than or equal to 900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111718.7A CN110640353B (en) | 2019-11-14 | 2019-11-14 | Welding wire material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111718.7A CN110640353B (en) | 2019-11-14 | 2019-11-14 | Welding wire material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110640353A true CN110640353A (en) | 2020-01-03 |
| CN110640353B CN110640353B (en) | 2021-05-28 |
Family
ID=68995895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911111718.7A Active CN110640353B (en) | 2019-11-14 | 2019-11-14 | Welding wire material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110640353B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926217A (en) * | 2020-08-13 | 2020-11-13 | 煜工(南通)环保设备制造有限公司 | High-temperature-resistant, corrosion-resistant and high-strength 1200-type alloy material and preparation method and application thereof |
| CN111979439A (en) * | 2020-08-21 | 2020-11-24 | 江苏隆达超合金航材有限公司 | Containing Cs2Refining slag for electroslag furnace of O |
| CN112059472A (en) * | 2020-09-10 | 2020-12-11 | 中国航发沈阳黎明航空发动机有限责任公司 | Welding wire for welding of case and preparation method and application thereof |
| CN113528871A (en) * | 2021-07-21 | 2021-10-22 | 攀钢集团江油长城特殊钢有限公司 | GH4098 alloy plate and preparation method thereof |
| CN115922140A (en) * | 2022-07-01 | 2023-04-07 | 苏州罗克莱堆焊科技有限公司 | Corrosion-resistant Hastelloy welding wire and processing production process and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6447716B1 (en) * | 1998-12-01 | 2002-09-10 | Ugine-Savoie Imphy | Welding electrode made of a nickel-based alloy and the corresponding alloy |
| CN102500951A (en) * | 2011-10-20 | 2012-06-20 | 四川大西洋焊接材料股份有限公司 | Nickel-based welding electrode matched with 9Ni steel |
| CN103464930A (en) * | 2013-09-18 | 2013-12-25 | 张盘 | Welding wire and welding flux for 9Ni low-temperature steel submerged arc welding as well as application of welding wire and welding flux |
| CN103480983A (en) * | 2013-09-18 | 2014-01-01 | 张盘 | High-strength high-tenacity 9Ni steel gas-shield weld metal |
| CN106181131A (en) * | 2016-07-15 | 2016-12-07 | 中国科学院上海应用物理研究所 | Solid core welding wire preparation method for the welding of anti-fused salt corrosion nickel base superalloy |
-
2019
- 2019-11-14 CN CN201911111718.7A patent/CN110640353B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6447716B1 (en) * | 1998-12-01 | 2002-09-10 | Ugine-Savoie Imphy | Welding electrode made of a nickel-based alloy and the corresponding alloy |
| CN102500951A (en) * | 2011-10-20 | 2012-06-20 | 四川大西洋焊接材料股份有限公司 | Nickel-based welding electrode matched with 9Ni steel |
| CN103464930A (en) * | 2013-09-18 | 2013-12-25 | 张盘 | Welding wire and welding flux for 9Ni low-temperature steel submerged arc welding as well as application of welding wire and welding flux |
| CN103480983A (en) * | 2013-09-18 | 2014-01-01 | 张盘 | High-strength high-tenacity 9Ni steel gas-shield weld metal |
| CN106181131A (en) * | 2016-07-15 | 2016-12-07 | 中国科学院上海应用物理研究所 | Solid core welding wire preparation method for the welding of anti-fused salt corrosion nickel base superalloy |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111926217A (en) * | 2020-08-13 | 2020-11-13 | 煜工(南通)环保设备制造有限公司 | High-temperature-resistant, corrosion-resistant and high-strength 1200-type alloy material and preparation method and application thereof |
| CN111979439A (en) * | 2020-08-21 | 2020-11-24 | 江苏隆达超合金航材有限公司 | Containing Cs2Refining slag for electroslag furnace of O |
| CN112059472A (en) * | 2020-09-10 | 2020-12-11 | 中国航发沈阳黎明航空发动机有限责任公司 | Welding wire for welding of case and preparation method and application thereof |
| CN112059472B (en) * | 2020-09-10 | 2022-05-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Welding wire for welding of case and preparation method and application thereof |
| CN113528871A (en) * | 2021-07-21 | 2021-10-22 | 攀钢集团江油长城特殊钢有限公司 | GH4098 alloy plate and preparation method thereof |
| CN115922140A (en) * | 2022-07-01 | 2023-04-07 | 苏州罗克莱堆焊科技有限公司 | Corrosion-resistant Hastelloy welding wire and processing production process and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110640353B (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110640353B (en) | Welding wire material and preparation method thereof | |
| CN106661705B (en) | carburized alloy steel and preparation method and application thereof | |
| CN110184531A (en) | The tank plate and its manufacturing method of a kind of thick easily welding center portion excellent in low temperature toughness of 40-60mm | |
| CN109355558B (en) | Austenitic stainless steel, and preparation method and application thereof | |
| CN109097680B (en) | Method for manufacturing high-manganese high-aluminum nonmagnetic steel plate smelted by 50t intermediate frequency induction furnace | |
| CN110055459B (en) | Medium-alloy ultrahigh-strength-toughness rare earth steel and preparation method thereof | |
| CN104178648B (en) | The preparation method of the chromio bearing metal of ni-resist without magnetic | |
| JP5950306B2 (en) | Fe-Ni-Cr alloy superior in sulfuric acid corrosion resistance, intergranular corrosion resistance and surface properties, and method for producing the same | |
| CN110408803A (en) | A kind of sublimate method of smelting for nickel base superalloy master alloy | |
| CN114196854B (en) | High-strength and difficult-to-deform nickel-based high-temperature alloy and preparation method thereof | |
| CN109371329A (en) | A kind of high temperature resistant synthetic quartz molding die Steel material and preparation method thereof | |
| CN114032461B (en) | High-nitrogen steel with high strength, low yield ratio and high corrosion resistance for marine engineering and preparation method thereof | |
| CN101962737B (en) | Multi-element alloyed ultrahigh-strength sucker rod steel and manufacturing method thereof | |
| CN103526121B (en) | A kind of anti scuffing mandrel material | |
| CN117230360B (en) | Preparation method of single-vacuum 300M steel | |
| CN114635094B (en) | Martensitic stainless steel for valve body and preparation method thereof | |
| CN105839021B (en) | The manufacture of steel pipe of ferritic stainless steel containing rare-earth and high chromium | |
| CN112605557A (en) | HGH1131 welding wire and preparation method thereof | |
| CN112621022A (en) | ERNiCrMo-11 welding wire and preparation method thereof | |
| CN112647022A (en) | High-silicon stainless steel pipe and preparation process thereof | |
| JP6526307B1 (en) | Ni-Cr-Nb-Fe-based alloy excellent in internal quality and hot workability and method for producing the same | |
| CN110666393B (en) | Core wire material and preparation method thereof | |
| RU2545856C2 (en) | High-strength cryogenic austenite weldable structural steel and steel obtainment method | |
| CN106811705A (en) | Glass-lined steel plate with excellent fish scaling resistance and manufacturing method thereof | |
| CN110669999B (en) | Super-large-section ledeburite cold-work die steel bar and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |