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Preparation process of a high-niobium-high-molybdenum nickel-based superalloy welding wire

A high-temperature alloy and preparation technology, which is applied in the direction of manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problems of poor formability of high-niobium and high-molybdenum welding wire, and achieve the effect of improving quality

Active Publication Date: 2016-10-12
JIANGSU XINGHAI SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a high-molybdenum, high-niobium nickel-based superalloy welding wire preparation process for the difficult-to-form high-molybdenum high-niobium nickel-based superalloy welding wire to improve the quality of the wire rod and the finished welding wire. quality

Method used

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  • Preparation process of a high-niobium-high-molybdenum nickel-based superalloy welding wire
  • Preparation process of a high-niobium-high-molybdenum nickel-based superalloy welding wire

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Embodiment 1

[0026] A preparation process of a high-niobium, high-molybdenum, nickel-based superalloy welding wire, which is beneficial to the forming of a high-niobium, high-molybdenum, nickel-based superalloy welding wire that is difficult to deform. The alloy composition is 2.4-3.0%Nb, 3.9-4.5%Mo, 28- 35%Cr, 8-15%Fe, Ni balance and a small amount of impurities, it includes the following steps:

[0027] ⑴ Refining ingots: through vacuum smelting, desulfurize, deoxidize and dephosphorize nickel-based superalloy molten steel, and refine them into Φ100mm ingots.

[0028] ⑵ Forging: Ingot of Φ100mm nickel-based superalloy welding wire is kept at 1150°C for 2 hours, forged to a billet with a cross-sectional area of ​​45mm×45mm, the deformation ratio is less than 3.88, and it is returned to the furnace twice during the forging process; after forging, ultrasonic Flaw detection, to detect whether there are internal cracks.

[0029] (3) Continuous hot rolling: heat the forged billet at 1100°C fo...

Embodiment 2

[0039] In the step (4), the size change during the rough drawing process is Φ6.55mm-Φ5.25mm-Φ4.75mm-Φ4.2-Φ3.75mm-Φ3.45mm; in the step (5), the size change during the fine drawing process is Φ3.45mm -Φ2.05mm -Φ1.45mm -Φ1.355mm -Φ1.285mm -Φ1.205mm, the rest are the same as the first embodiment.

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Abstract

The invention discloses a technique for manufacturing a high-niobium and high-molybdenum nickel-base superalloy welding wire. According to the technique for manufacturing the high-niobium and high-molybdenum nickel-base superalloy welding wire, the problems that when an existing technique is used for producing the high-niobium and high-molybdenum nickel-base superalloy welding wire which is not prone to deformation, in the forming process, a blank cracks, feeding is difficult, the tilting distance and the looseness diameter of the finished welding wire are large, and the surface roughness of the finished welding wire is high are solved by controlling the forging temperature, the deformation ratio and the remelting frequency during melting and the deformation ratio during primary hot continuous rolling and reasonably controlling the deformation of each pass in the drawing process, and the high-niobium and high-molybdenum nickel-base superalloy welding wire which is not prone to deformation can be formed easily.

Description

technical field [0001] The invention relates to the field of preparation of nickel-based high-temperature alloy welding wire, in particular to a preparation process of high-niobium and high-molybdenum nickel-based high-temperature alloy welding wire. Background technique [0002] High niobium and high molybdenum nickel base superalloys are difficult to form in the actual production process, especially in the preparation process of high molybdenum and high niobium nickel base superalloy welding wire. When the welding wire is prepared and blanked, problems such as internal cracks and surface cracks will occur, which seriously affect the implementation of the subsequent drawing process of the welding wire. In addition, due to the characteristics of the high-molybdenum-high-niobium nickel-based superalloy material itself, the work hardening of the welding wire is obvious during the fine drawing process, which has a great impact on the relaxation diameter, warpage and diameter de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40
CPCB23K35/304B23K35/40
Inventor 计建康刘庄明王冬女刘俊邱爱华
Owner JIANGSU XINGHAI SPECIAL STEEL