Low-nickel austenite gas valve alloy and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An austenitic and gas valve technology, which is applied in the field of low-nickel austenitic gas valve alloy and its preparation, can solve the problems that materials cannot meet the needs, etc., and achieve high-temperature long-term service performance, high-temperature oxidation resistance and corrosion resistance Performance, the effect of improving high temperature oxidation resistance
Inactive Publication Date: 2015-06-24
JIANGSU SHENYUAN SPECIAL STEEL +1
View PDF5 Cites 15 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
[0008] The purpose of the present invention is to provide a low-nickel austenitic gas valve alloy, in order to obtain a gas valve with exce
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 1
[0037] Example 1, a low-nickel austenitic gas valve alloy, the chemical composition is based on weight percentage, containing Ni: 31%, Cr: 14%, C: 0.04%, Al: 2%, Ti: 2.6%, W: 0.1 %, Mo: 0.7%, Nb: 0.7%, Cu: 0.1%, Y: 0.15%, Hf: 0.14%, B: 0.003%, Mn: 0.3%, Si: 0.1%, S≤0.02%, P≤0.02 %, O ≤ 0.02%, N ≤ 0.02%, the balance is Fe and unavoidable impurities, the impurity content ≤ 0.3%.
Embodiment 2
[0038] Example 2, a low-nickel austenitic gas valve alloy, the chemical composition is based on weight percentage, containing Ni: 29%, Cr: 15%, C: 0.03%, Al: 1.8%, Ti: 2.7%, W: 0.5% %, Mo: 0.6%, Nb: 0.5%, Cu: 0.2%, Y: 0.13%, Hf: 0.12%, B: 0.002%, Mn: 0.3%, Si: 0.2%, S≤0.02%, P≤0.02 %, O ≤ 0.02%, N ≤ 0.02%, the balance is Fe and unavoidable impurities, the impurity content ≤ 0.3%.
Embodiment 3
[0039] Example 3, a low-nickel austenitic gas valve alloy, the chemical composition is based on weight percentage, containing Ni: 35%, Cr: 17%, C: 0.06%, Al: 2.1%, Ti: 3.0%, W: 0.3 %, Mo: 0.4%, Nb: 0.6%, Cu: 0.1%, Y: 0.12%, Hf: 0.13%, B: 0.003%, Mn: 0.2%, Si: 0.2%, S≤0.02%, P≤0.02 %, O ≤ 0.02%, N ≤ 0.02%, the balance is Fe and unavoidable impurities, the impurity content ≤ 0.3%.
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
Login to view more
Abstract
The invention discloses low-nickel austenite gas valve alloy and a preparation method thereof. The low-nickel austenite gas valve alloy comprises the following ingredients in percentage by weight: 0.02-0.08% of C, 28.0-35.0% of Ni, 12.0-17.0% of Cr, 1.5-2.5% of Al, 2.5-3.5% of Ti, 0.4-1.02% of W and Mo, 0.3-0.9% of Nb and Cu, 0.05-0.2% of Y, 0.05-0.3% of Hf, 0.001-0.005% of B, smaller than or equal to 0.4% of Mn, smaller than or equal to 0.3% of Si, smaller than or equal to 0.02% of S, smaller than or equal to 0.02% of P, smaller than or equal to 0.02% of O, smaller than or equal to 0,02% of N and the balanced Fe and unavoidable impurities. Cu is smaller than or equal to 0.3%. The alloy has the advantages of high strength, excellent corrosion resisting property and good high-temperature performance.
Description
technical field [0001] The invention relates to a metal material and a preparation method thereof, in particular to a low-nickel austenitic gas valve alloy and a preparation method thereof. Background technique [0002] Internal combustion engines include gasoline engines and diesel engines, which are mainly used in automobiles, motorcycles, tractors, ships, diesel locomotives, tanks, oil drilling rigs, construction machinery, mobile power stations, etc., and play an important role in the national economy. important parts. The development and production of valve steel for internal combustion engines in my country develops along with the continuous innovation of internal combustion engines. Over the past few decades, the continuous improvement of internal combustion engine parameters has led to an increase in the operating temperature of the valve steel, increased stress, severe gas corrosion, accelerated wear of the valve cone surface, and increasingly harsh operating condi...
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 
Login to view more