CN110977246A - H00Cr12Ni9Mo2Si welding wire and production process thereof - Google Patents
H00Cr12Ni9Mo2Si welding wire and production process thereof Download PDFInfo
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- CN110977246A CN110977246A CN201911414440.0A CN201911414440A CN110977246A CN 110977246 A CN110977246 A CN 110977246A CN 201911414440 A CN201911414440 A CN 201911414440A CN 110977246 A CN110977246 A CN 110977246A
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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
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
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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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
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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
- B23K35/40—Making wire or rods for soldering or welding
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Abstract
The invention provides an H00Cr12Ni9Mo2Si welding wire and a production process thereof, wherein the welding wire comprises the following chemical components in percentage by weight: less than or equal to 0.03 percent of C, 1.4 to 1.7 percent of Si, 0.6 to 0.9 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.6 to 12.0 percent of Cr, 8.5 to 8.9 percent of Ni, less than or equal to 0.1 percent of Al, 1.8 to 2.2 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.025 percent of N, less than or equal to 0.05 percent of Ca, and the balance of iron. By optimizing the alloy components and the manufacturing process, the obtained H00Cr12Ni9Mo2Si welding wire has excellent mechanical property, high-temperature oxidation resistance and corrosion resistance.
Description
Technical Field
The invention relates to the technical field of special welding wires, in particular to an H00Cr12Ni9Mo2Si welding wire and a production process thereof.
Background
In the field of chemical and industrial boilers such as power plant boilers, a plurality of pipelines are used, the pipelines are in high-temperature, heavy-corrosion or liquid continuous scouring environments during working, welding wires are needed for welding and repairing the pipelines, and therefore, the high-temperature oxidation resistance and erosion and corrosion resistance of the welding wires are very important considerations for the welding wires for pipeline welding in the fields except the welding performance and yield of the welding wires. At present, the nickel-based welding wire generated based on the national standard can not meet the pipeline welding requirement under the special application environment basically, so the element composition and the production process of the nickel-based welding wire at present need to be optimized, and the nickel-based welding wire can meet higher application requirements.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an H00Cr12Ni9Mo2Si welding wire and a production process thereof, wherein the H00Cr12Ni9Mo2Si welding wire obtained by optimizing alloy components and a manufacturing process has excellent mechanical property, high-temperature oxidation resistance and corrosion resistance.
In order to achieve the purpose, the invention provides an H00Cr12Ni9Mo2Si welding wire, which comprises the following chemical components in percentage by weight: less than or equal to 0.03 percent of C, 1.4 to 1.7 percent of Si, 0.6 to 0.9 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.6 to 12.0 percent of Cr, 8.5 to 8.9 percent of Ni, less than or equal to 0.1 percent of Al, 1.8 to 2.2 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.025 percent of N, less than or equal to 0.05 percent of Ca, and the balance of iron.
Further, the welding wire comprises the following chemical components in percentage by weight: 0.015 percent of C, 1.55 percent of Si, 0.75 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.8 percent of Cr, 8.7 percent of Ni, less than or equal to 0.1 percent of Al, 2.0 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.02 percent of N, less than or equal to 0.05 percent of Ca and the.
The invention also provides a production process for preparing the H00Cr12Ni9Mo2Si welding wire, which comprises the following steps:
(1) preparing materials: the materials are proportioned according to the designed components, the novel material is adopted for production, and all the materials, the casting refractory and the deoxidizer are strictly baked, so that the oil-free and impurity-free effects are ensured;
(2) smelting in a vacuum furnace: putting a brand new raw material into a vacuum furnace, vacuumizing the vacuum furnace, performing power transmission smelting when the vacuum degree is lower than 3Pa, and pouring to form an ingot;
(3) forging: forging the cast ingot into a 50mm multiplied by 50mm forged piece, wherein the heating temperature is 1160-1180 ℃, the finish forging temperature is more than or equal to 900 ℃, and the surface of the forged piece is polished clean and has no crack and warping defect;
(4) hot rolling: hot rolling the forging into a wire rod with the diameter of 7.5mm, and carrying out hot rolling at the heating temperature of 1160-1190 ℃;
(5) and (3) heat treatment: the temperature of the solid solution heat treatment is 980-1050 ℃, the temperature is kept for 1-1.5 h, and then the mixture is taken out of the furnace and cooled by water;
(6) cold drawing: performing cold drawing treatment on the heat-treated wire rod, wherein the inner diameter of a coil of a finished welding wire is 300-400 mm, the net weight of each coil is 20-30Kg, and the number of welding points of each coil is less than or equal to 1;
(7) and (4) checking: including its size, chemical analysis, surface quality, flaw detection, identification, packaging.
Further, in the step (2), firstly, melting with low power and then melting with high power, and the refining time is more than 35 min.
Further, in step (2), the method further includes: the carbon block is crushed and added into the bottom of the crucible according to the proportion of 0.25 percent.
Further, Si is crystalline silicon, Mn is electrolytic manganese, iron is pure iron, and the surface of the pure iron is bright.
Further, in this step (6), the use of a graphite type drawing lubricant is avoided.
Further, the ingot size is 38 Kg.
Further, in the step (6), the two welding wires connected by the welding point must be steel wires with the same furnace number.
Further, in the step (6), the cold drawing process adopts multi-pass drawing, and the reduction of the wire rod in each time of drawing is between 0.05 and 0.08 mm.
Compared with the prior art, the H00Cr12Ni9Mo2Si welding wire strictly controls elements and contents thereof in the alloy, for example, the Si and Mn elements, so that the plasticity of the material is improved, the alloy is conveniently processed into a thinner welding wire, and the welding performance of the welding wire is ensured by the proportion of the three main elements, namely Ni, Cr and Mo; the high-temperature endurance strength and the service life of the material can be improved by adding a proper amount of Zr element; and Zr is a main element for forming a ceramic oxide film, and Ti can prevent the formation of AL2O3 and promote the formation of Zr 2O; moreover, the vacuum furnace smelting is beneficial to reducing the gas content and the content of harmful elements, and simultaneously, the existing elements such as Ti and the like are not easy to oxidize; and the prepared welding wire has good mechanical property and excellent high-temperature oxidation resistance and corrosion resistance.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
The invention provides an H00Cr12Ni9Mo2Si welding wire, which comprises the following chemical components in percentage by weight: less than or equal to 0.03 percent of C, 1.4 to 1.7 percent of Si, 0.6 to 0.9 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.6 to 12.0 percent of Cr, 8.5 to 8.9 percent of Ni, less than or equal to 0.1 percent of Al, 1.8 to 2.2 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.025 percent of N, less than or equal to 0.05 percent of Ca, and the balance of iron. Wherein, the welding wire preferably comprises the following chemical components in percentage by weight: 0.015 percent of C, 1.55 percent of Si, 0.75 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.8 percent of Cr, 8.7 percent of Ni, less than or equal to 0.1 percent of Al, 2.0 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.02 percent of N, less than or equal to 0.05 percent of Ca and the.
In addition, the invention also provides a production process for preparing the H00Cr12Ni9Mo2Si welding wire, which comprises the following steps:
(1) preparing materials: preparing materials according to the designed components, producing by adopting a completely new material, and strictly baking all materials, casting refractory materials and deoxidizing agents to ensure that the materials are free of oil and impurities and simultaneously making baking records; furthermore, each material should be visible in its natural color.
(2) Smelting in a vacuum furnace: putting a brand new raw material into a vacuum furnace, vacuumizing the vacuum furnace, performing power transmission smelting when the vacuum degree is lower than 3Pa, performing low-power smelting and then high-power smelting, wherein the refining time is longer than 35min, and pouring to form an ingot. In addition, in the step, the carbon blocks can be crushed and added into the bottom of a crucible of the vacuum furnace according to 0.25 percent. In addition, Si adopts crystal Si without using calcium silicon, manganese adopts electrolytic manganese metal, the use of Cr metal needs to pay attention to the content of Al in a quality guarantee book so as to avoid causing excessive Al element, and pure iron needs to have visible light on the surface.
(3) Forging: and forging the cast ingot into a 50mm multiplied by 50mm forged piece, wherein the heating temperature is 1160-1180 ℃, the finish forging temperature is more than or equal to 900 ℃, and the surface of the forged piece is polished clean and has no crack or warping defect.
(4) Hot rolling: the forge piece is hot-rolled into a wire rod with the diameter of 7.5mm, and the hot-rolling heating temperature is 1160-1190 ℃.
(5) And (3) heat treatment: the temperature of the solid solution heat treatment is 980-1050 ℃, the temperature is kept for 1-1.5 h, and then the steel is taken out of the furnace and cooled by water.
(6) Cold drawing: and (3) performing cold drawing treatment on the heat-treated wire rod, wherein the inner diameter of the coil of the finished welding wire is 300-400 mm, the net weight of each coil is 20-30Kg, the number of welding points of each coil is less than or equal to 1, and two sections of welding wires connected by the welding points are required to be steel wires with the same furnace number. Wherein, the drawing process should avoid using graphite type drawing lubricant, and if necessary, the drawing lubricant can be removed by alkali washing and acid washing. Moreover, the surface of the finished welding wire is free from oil stains, water stains and the like.
Furthermore, in order to ensure the drawing quality, the cold drawing process adopts multi-pass drawing, and the reduction of the wire rod in each drawing is between 0.05 and 0.08 mm.
(7) And (4) checking: including its size, chemical analysis, surface quality, flaw detection, identification, packaging.
The main elements in the H00Cr12Ni9Mo2Si welding wire have the following functions:
(1) c: the solid solution strengthening element can improve the strength of the austenitic stainless steel welding seam. However, as the content increases, carbides begin to precipitate in the weld metal, reducing the corrosion resistance of the weld. Therefore, the content of C should be less than or equal to 0.04%.
(2) Si: an oxidation film is formed on the surface of the welding seam, so that the oxidation resistance of the welding seam at high temperature is improved, and the welding seam is also a good deoxidizer and can increase the fluidity of slag and molten metal. However, the eutectic composition is segregated during solidification to form a low melting point eutectic composition, and particularly, when the eutectic composition is combined with Ni, the amount of Si in the solder strip is controlled to be 0.25 to 0.45%.
(3) Mn: the Mn can increase the interface energy of solid-liquid phases, reduce the formation of a grain boundary liquid film and reduce the sensitivity of thermal cracking in the crystallization process, thereby alleviating the harmful effect of S, P impurity elements. The addition of Mn can also affect the basic solid solubility, the formation, amount of inclusions, the liquefaction temperature of the low melting phase, etc.
(4) P, S: harmful elements such as P, S and the like can increase the sensitivity of hot cracks of the surfacing metal, cause embrittlement of crystal boundaries and increase the DDC sensitivity.
(5) N: the stainless steel can be strengthened by the N element, and the pitting corrosion resistance of the stainless steel can be greatly improved, but the room temperature toughness of the stainless steel is also deteriorated by the N element, so that the content of the N element is reasonably controlled.
(6) Ti: the deoxidizing element, the Ti element, has a stronger chemical affinity with the C, N element than the Cr element, and thus can react with the C, N element in a large amount under high temperature conditions to form a stable compound, thereby preventing a local content decrease of the Cr element due to the generation of Cr (C, N) and a decrease in corrosion resistance. However, excessive addition of Ti element causes deterioration of the surface quality of ferritic stainless steel, and therefore Ti element should be added in a proper ratio on the premise of satisfying the performance requirements.
(7) The Cr influences the key factors of the load stress corrosion, and the increase of the Cr element content in the stainless steel can obviously improve various corrosion resistance properties of the material, including pitting corrosion property, crevice corrosion property, stress corrosion property, intercrystalline corrosion property and the like. However, the addition of excessive Cr causes an increase in the cost of raw materials and also causes great difficulty in the production process of stainless steel, and the excessive Cr causes a large amount of intermetallic compound precipitates to be generated in different temperature ranges, which seriously deteriorates the room temperature mechanical properties and corrosion resistance of ferritic stainless steel, so that the Cr content must be controlled within a reasonable range.
(8) Zr: forming a Zr2O film with ceramic characteristics, and preventing high-temperature oxidation and acid corrosion of the material; in addition, when Ti and Zr exceed a certain amount, the forgeability is extremely poor, the forging head is severe, and the yield after flaw detection is low. .
(9) Ni: ni and other elements form an austenite crystal lattice, do not generate phase change at high temperature and have good stability at high temperature. Ni is an austenitizing element, can provide good comprehensive performance, has good stability, can form a solid solution with Cr at high temperature, has higher high-temperature strength, has high plasticity at normal temperature, and has good processing property.
(10) Mo: the corrosion resistance of Mo element is three times of that of Cr element, and the existence of Mo element greatly improves various corrosion resistance of ferritic stainless steel. However, since the Mo element is expensive, the addition of a large amount of Mo element in ferritic stainless steel greatly increases the cost of raw materials, and thus the content of Mo element must be strictly controlled.
(11) B: b is an element that improves the hardenability of the steel.
(12) Al: al is also an important alloy element for oxidation resistance, and the welding wire containing Al can form a layer of Al with good protection on the surface2O3The film has a good oxidation resistance, but the Al content in the steel is too high, which makes the steel difficult to plastically work and weld.
The present invention will be further described with reference to the following specific examples.
Table 1 below shows the specific elemental compositions and the weight percentage contents of each component of three examples of the present invention.
Unit: weight percent (%)
Remarking: the balance being Fe and unavoidable impurities, not listed in Table 1.
The production process of the H00Cr12Ni9Mo2Si welding wire in each embodiment of the invention adopts the following steps:
the invention provides an H00Cr12Ni9Mo2Si welding wire, which comprises the following chemical components in percentage by weight: less than or equal to 0.03 percent of C, 1.4 to 1.7 percent of Si, 0.6 to 0.9 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.6 to 12.0 percent of Cr, 8.5 to 8.9 percent of Ni, less than or equal to 0.1 percent of Al, 1.8 to 2.2 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.025 percent of N, less than or equal to 0.05 percent of Ca, and the balance of iron. Wherein, the welding wire preferably comprises the following chemical components in percentage by weight: 0.015 percent of C, 1.55 percent of Si, 0.75 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.8 percent of Cr, 8.7 percent of Ni, less than or equal to 0.1 percent of Al, 2.0 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.02 percent of N, less than or equal to 0.05 percent of Ca and the.
In addition, the invention also provides a production process for preparing the H00Cr12Ni9Mo2Si welding wire, which comprises the following steps:
(1) preparing materials: preparing materials according to the designed components, producing by adopting a completely new material, and strictly baking all materials, casting refractory materials and deoxidizing agents to ensure that the materials are free of oil and impurities and simultaneously making baking records; furthermore, each material should be visible in its natural color.
(2) Smelting in a vacuum furnace: putting brand new raw materials into a vacuum furnace, vacuumizing the vacuum furnace, performing power transmission smelting when the vacuum degree is lower than 3Pa, performing low-power smelting and high-power smelting for more than 35min, and pouring to form a steel ingot, wherein the specification of the steel ingot is 38 Kg. In addition, in the step, the carbon blocks can be crushed and added into the bottom of a crucible of the vacuum furnace according to 0.25 percent. In addition, Si adopts crystal Si without using calcium silicon, manganese adopts electrolytic manganese metal, the use of Cr metal needs to pay attention to the content of Al in a quality guarantee book so as to avoid causing excessive Al element, and pure iron needs to have visible light on the surface.
(3) Forging: and forging the cast ingot into a 50mm multiplied by 50mm forged piece, wherein the heating temperature is 1160-1180 ℃, the finish forging temperature is more than or equal to 900 ℃, and the surface of the forged piece is polished clean and has no crack or warping defect.
(4) Hot rolling: the forge piece is hot-rolled into a wire rod with the diameter of 7.5mm, and the hot-rolling heating temperature is 1160-1190 ℃.
(5) And (3) heat treatment: the temperature of the solid solution heat treatment is 980-1050 ℃, the temperature is kept for 1-1.5 h, and then the steel is taken out of the furnace and cooled by water.
(6) Cold drawing: and (3) performing cold drawing treatment on the heat-treated wire rod, wherein the inner diameter of the coil of the finished welding wire is 300-400 mm, the net weight of each coil is 20-30Kg, the number of welding points of each coil is less than or equal to 1, and two sections of welding wires connected by the welding points are required to be steel wires with the same furnace number. Moreover, the surface of the finished welding wire is free from oil stains, water stains and the like. Furthermore, in order to ensure the drawing quality, the cold drawing process adopts multi-pass drawing, and the reduction of the wire rod in each drawing is between 0.05 and 0.08 mm.
(7) And (4) checking: including its size, chemical analysis, surface quality, flaw detection, identification, packaging. Wherein the specification size of the finished welding wire is phi 1.2 mm.
The H00Cr12Ni9Mo2Si welding wire prepared by the embodiments of the invention has tensile strength of more than 1000MPa and excellent mechanical property when being made into a wire rod with phi 1.2 mm. See table 2 below.
Table 2: test results of welding wire performance of H40Ni45Cr35Nb
The H00Cr12Ni9Mo2Si welding wire strictly controls elements and contents thereof in the alloy, for example, the Si and Mn elements, so that the plasticity of the material is improved, the alloy is conveniently processed into a thinner welding wire, and the welding performance of the welding wire is ensured by the proportion of the three main elements, namely Ni, Cr and Mo; the high-temperature endurance strength and the service life of the material can be improved by adding a proper amount of Zr element; zr is a main element for forming a ceramic oxide film, and Ti prevents AL2O3To promote Zr formation2Forming O; moreover, the vacuum furnace smelting is beneficial to reducing the gas content and the content of harmful elements, and simultaneously, the existing elements such as Ti and the like are not easy to oxidize; the prepared welding wire has good mechanical property, excellent high-temperature oxidation resistance and corrosion resistance, and can meet the welding requirements of the petrochemical industry on electrolytic tubes, fluid pipes and the like.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (10)
1. The welding wire is characterized by comprising the following chemical components in percentage by weight: less than or equal to 0.03 percent of C, 1.4 to 1.7 percent of Si, 0.6 to 0.9 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.6 to 12.0 percent of Cr, 8.5 to 8.9 percent of Ni, less than or equal to 0.1 percent of Al, 1.8 to 2.2 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.025 percent of N, less than or equal to 0.05 percent of Ca, and the balance of iron.
2. The welding wire of claim 1, wherein the welding wire comprises the following chemical components in percentage by weight: 0.015 percent of C, 1.55 percent of Si, 0.75 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.01 percent of S, 11.8 percent of Cr, 8.7 percent of Ni, less than or equal to 0.1 percent of Al, 2.0 percent of Mo, less than or equal to 0.05 percent of Ti, less than or equal to 0.003 percent of B, less than or equal to 0.08 percent of Zr, less than or equal to 0.02 percent of N, less than or equal to 0.05 percent of Ca and the.
3. A process for producing the H00Cr12Ni9Mo2Si welding wire of claim 1 or 2, wherein the process comprises the steps of:
(1) preparing materials: the materials are proportioned according to the designed components, the novel material is adopted for production, and all the materials, the casting refractory and the deoxidizer are strictly baked, so that the oil-free and impurity-free effects are ensured;
(2) smelting in a vacuum furnace: putting a brand new raw material into a vacuum furnace, vacuumizing the vacuum furnace, performing power transmission smelting when the vacuum degree is lower than 3Pa, and pouring to form an ingot;
(3) forging: forging the cast ingot into a 50mm multiplied by 50mm forged piece, wherein the heating temperature is 1160-1180 ℃, the finish forging temperature is more than or equal to 900 ℃, and the surface of the forged piece is polished clean and has no crack and warping defect;
(4) hot rolling: hot rolling the forging into a wire rod with the diameter of 7.5mm, and carrying out hot rolling at the heating temperature of 1160-1190 ℃;
(5) and (3) heat treatment: the temperature of the solid solution heat treatment is 980-1050 ℃, the temperature is kept for 1-1.5 h, and then the mixture is taken out of the furnace and cooled by water;
(6) cold drawing: performing cold drawing treatment on the heat-treated wire rod, wherein the inner diameter of a coil of a finished welding wire is 300-400 mm, the net weight of each coil is 20-30Kg, and the number of welding points of each coil is less than or equal to 1;
(7) and (4) checking: including its size, chemical analysis, surface quality, flaw detection, identification, packaging.
4. The process for producing the H00Cr12Ni9Mo2Si welding wire according to claim 3, wherein in the step (2), the melting is performed with low power and then with high power, and the refining time is more than 35 min.
5. The process for producing the H00Cr12Ni9Mo2Si welding wire according to claim 3, wherein the step (2) further comprises: the carbon block is crushed and added into the bottom of the crucible according to the proportion of 0.25 percent.
6. The process for producing the H00Cr12Ni9Mo2Si welding wire according to claim 3, wherein Si is crystalline silicon, Mn is electrolytic manganese, iron is pure iron, and the surface of the pure iron is bright.
7. The process for producing an H00Cr12Ni9Mo2Si welding wire according to claim 3, wherein in step (6), the use of graphite type drawing lubricant is avoided.
8. The production process of the H00Cr12Ni9Mo2Si welding wire as claimed in claim 3, wherein the ingot size is 38 Kg.
9. The process for producing the H00Cr12Ni9Mo2Si welding wire as claimed in claim 3, wherein in step (6), the two welding wires connected by the welding point must be steel wires with the same furnace number.
10. The process for producing the H00Cr12Ni9Mo2Si welding wire as claimed in claim 3, wherein in the step (6), the cold-drawing process is performed in multiple passes, and the reduction of the wire rod in each pass is 0.05-0.08 mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605557A (en) * | 2020-12-26 | 2021-04-06 | 江苏新核合金科技有限公司 | HGH1131 welding wire and preparation method thereof |
| CN112621022A (en) * | 2020-12-26 | 2021-04-09 | 江苏新核合金科技有限公司 | ERNiCrMo-11 welding wire and preparation method thereof |
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| CN112605557A (en) * | 2020-12-26 | 2021-04-06 | 江苏新核合金科技有限公司 | HGH1131 welding wire and preparation method thereof |
| CN112621022A (en) * | 2020-12-26 | 2021-04-09 | 江苏新核合金科技有限公司 | ERNiCrMo-11 welding wire and preparation method thereof |
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