Welding material for austenitic heat-resistant steel, and welded metal and welded joint each using same
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A welding material, austenitic technology, applied in the direction of welding/welding/cutting items, welding/cutting medium/material, welding medium, etc.
Inactive Publication Date: 2015-06-03
NIPPON STEEL CORP
View PDF6 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
), there is still some room for improvement
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0129] The ingot is melted and cast in the laboratory with the chemical composition shown in Table 1, and is made into a plate with a thickness of 12mm, a width of 50mm, and a length of 100mm through hot forging, hot rolling, heat treatment and mechanical processing. The plate is used as the plate for welding base material.
[0130] In addition, the ingots obtained by melting and casting materials with the symbols A to F of the chemical composition shown in Table 2 were produced by hot forging, hot rolling and mechanical processing to have an outer diameter of 1.2 mm and a length of 1000mm of welding material (welding wire).
[0131] Table 1
[0132]
[0133] Table 2
[0134]
[0135] In the length direction of the above-mentioned plate for welding the base metal, a V-shaped groove with an angle of 30° and a thickness of the blunt edge of 1 mm is processed, and then "DNiCrFe-3" specified in JIS Z3224 (1999) is used as an electrode, Constraint welding was performed...
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
Property
Measurement
Unit
length
aaaaa
aaaaa
Login to view more
Abstract
Disclosed is a welding material for austenitic heat-resistant steel, which has a chemical composition that contains more than 0.05% but 0.18% or less of C, 0.5% or less of Si, 1.5% or less of Mn, 40-50% of Ni, 20-25% of Cr, more than 8.0% but 13.0% or less of W, 0.01-0.2% of Ti, more than 0.03% but 0.20% or less of N and 0.01% or less of Al, and additionally if necessary, less than 0.60% of Nb, with the balance made up of Fe and impurities, while controlling O, P and S contained as impurities to 0.02% or less, 0.008% or less, and 0.005% or less, respectively. The welding material for austenitic heat-resistant steel exhibits excellent high-temperature cracking resistance during the welding. A welded metal that has high-temperature cracking resistance during the welding, stress relaxation cracking resistance when in use for a long period of time at high temperatures, and good creep strength can be provided using the above-described welding material. In addition, a welded joint can be provided, using the above-described welding material, from a base that has excellent creep strength at high temperatures and a welded metal that has high-temperature cracking resistance during the welding, stress relaxation cracking resistance when in use for a long period of time at high temperatures, and good creep strength.
Description
technical field [0001] The invention relates to a welding material for austenitic heat-resistant steel, a welding metal and a welding joint using the welding material. Specifically, it relates to a welding material suitable for welding austenitic heat-resistant steel, which is used in boilers for power generation, etc. Austenitic heat-resistant steels in equipment used at high temperatures. Background technique [0002] In recent years, from the viewpoint of reducing the environmental load, the operating conditions of power generation boilers and the like have been increased to high temperature and high pressure globally, and materials used in power generation boilers and the like have been required to have more excellent high temperature strength. [0003] As a material satisfying this requirement, for example, Patent Document 1 proposes an austenitic heat-resistant steel that has excellent creep strength in a high-temperature range of 700°C or higher by including a large ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more