High-temperature high-strength nuclear power nickel-based welding wire free of crack defects and preparation and application thereof

A high-strength, crack-free technology, applied in arc welding equipment, welding equipment, welding equipment, etc., can solve problems such as high temperature performance and crack resistance need to be further improved, nuclear island main equipment safety service hazards, etc., to achieve less defects, The effect of increased development requirements and high temperature strength

Active Publication Date: 2017-03-29
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF10 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nickel-based welding wire often has a high-temperature loss of plastic crack (DDC) during the welding process of the main equipment of the nuclear island. Due to its small size, it is difficult to detect it completely by X-rays, but it often becomes the inducer of other failure behaviors. source, which is very harmful to the safe...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature high-strength nuclear power nickel-based welding wire free of crack defects and preparation and application thereof
  • High-temperature high-strength nuclear power nickel-based welding wire free of crack defects and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In a specific embodiment, the preparation method of the high-temperature, high-strength, crack-free nickel-based welding wire for nuclear power of the present invention is to prepare a master alloy steel ingot by vacuum smelting and electroslag remelting, and the master alloy steel ingot is forged into a section of 50 after being kept at 1130°C for 4 hours. ×50mm square billet, and then hot rolling at 1150°C for 1.5h to form a Φ6.5mm wire rod. The wire rod undergoes conventional multi-pass continuous cold drawing and intermediate hydrogen-filled annealing to make finished Φ1.2mm welding wire, and the tensile strength of the welding wire is 1000-1300MPa. In terms of weight percentage, the chemical composition of the nickel-based welding wire for nuclear power is as follows:

[0028] Cr: 28.0~31.0%, Fe: 7.0~11.0%, C: ≤0.04%, Mn: 0.7~0.9%, Si: 0.10~0.15%, Ti: 0.25~0.5%, Al: 0.15~0.4%, Al+ Ti: 0.4~0.8%, Mo: 2.0~4.0%, Nb: 1.5~2.5%, S:<0.005%, P:<0.005%, O≤0.005%, H≤2ppm, N≤...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of welding materials and particularly relates to a high-temperature high-strength nuclear power nickel-based welding wire free of crack defects and preparation and application thereof. The high-temperature high-strength nuclear power nickel-based welding wire is composed of, by weight, 28.0-31.0% of Cr, 7.0-11.0% of Fe, 0-0.04% of C, 0-1.0% of Mn, 0-0.15% of Si, 0-0.5% of Ti, 0-0.4% of Al, 2.0-4.0% of Mo, 1.5-2.5% of Nb, 0-0.005% of S, 0-0.005% of P, 0-0.005% of O, 0-2ppm of H, 0-0.02% of N, 0-0.005% of Ca, 0-0.005% of Mg, 0-0.02% of Ta, 0-0.02% of Cu, 0-0.02% of Co and the balance Ni, specifically, Al+Ti<=0.8%. The high-temperature high-strength nuclear power nickel-based welding wire can meet development requirements of a nuclear power station and improve material performance of primary equipment of a nuclear island, the ductility dip cracking resistance of the welding wire is better than that of an ERNiCrFe-7A welding material adopted in the existing nuclear island primary equipment manufacturing process, the product repair rate is decreased, and the manufacturing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of welding materials, in particular to a high-temperature, high-strength, crack-free nickel-based welding wire for nuclear power and a preparation method and use method thereof. Background technique [0002] my country is currently vigorously developing the nuclear power industry. The third-generation nuclear power technology is the mainstream nuclear power technology adopted by the currently developed nuclear power plants, and the service life is required to be extended from 40 years to 60 years. Therefore, higher requirements are put forward for the materials of the main equipment of the nuclear island. [0003] Inconel FM 52M (ERNiCrFe-7A) welding wire is currently the most widely used nickel-based welding material in the manufacture of nuclear island main equipment, and it has excellent corrosion resistance. The nickel-based welding wire often has a high-temperature loss of plastic crack (DDC) during th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B23K35/30B23K35/40B23K9/167
CPCB23K9/167B23K35/3033B23K35/40
Inventor 陆善平张旭李殿中李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap