Gas pipe alloy of domestic gas stove, preparation method of gas pipe alloy and gas pipe
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 technology for gas pipes and gas stoves, applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., can solve the problems of easy cavitation, poor wear resistance, shortened service life of gas pipes, etc. Good wear resistance and the effect of grain size refinement
Active Publication Date: 2019-03-12
宁波正直科技有限公司
View PDF24 Cites 0 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
[0003] However, the surface of the existing ferrochrome alloy has poor wear resistance and loose oxide film on the surface, and the surface is prone to cavitation under the friction of high-speed flow of gas, resulting in continuous oxidation and frictional peeling of the inner surface of the gas pipe made of ferrochrome alloy, and the service life of the gas pipe is shortened. short
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
[0051] A household gas stove gas pipe alloy, its composition by mass fraction is:
[0052] C: 1.95-2.01wt%, Si: 0.17-0.20wt%, Mn: 0.30-0.60wt%, P: 0.001-0.01wt%, S: 0.001-0.012wt%, Cr: 0.20-0.25wt%, V: 0.56-0.62wt%, Al: 5.5-5.8wt%, Pb: 0.12-0.17wt%, Ti: 0.13-0.18wt%, Co: 0.12-0.17wt%, Y: 0.2-0.25wt%, Fe: 90.61- 91.01wt%, other alloy metal elements: 0.5-0.67wt%, and the rest are unavoidable impurities.
[0053] The addition method of Al is Al 4 C 3 . The Si addition method includes SiC, and Si in SiC accounts for 85-90% of the Si mass content in the obtained alloy. Unavoidable impurities include [H], and the mass fraction of [H] is 0.0002-0.00025wt%.
[0054] The preparation method of the above-mentioned domestic gas stove gas pipe alloy comprises the following steps:
[0055] S1: Put molten iron and steel scrap into the converter, carry out conventional top-bottom combined blowing to control blowing oxygen pressure 0.8-0.82MPa, when the tapping temperature is 1620-1640°C...
Embodiment 2
[0081] A gas pipe, based on Example 1A, the difference is that in S4, ferrosilicon alloy is used instead of SiC, and the Si composition is adjusted to be qualified.
Embodiment 3
[0083]A gas pipe, based on Example 1A, the difference is that cobalt-iron alloy is not added in the preparation method of household gas stove gas pipe alloy, titanium-iron alloy is replaced by pig iron, and the original Ti and Co components are replaced by Fe content.
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
diameter
aaaaa
aaaaa
Login to view more
Abstract
The invention relates to a gas pipe of a gas stove and discloses a gas pipe alloy of a domestic gas stove, a preparation method of the gas pipe alloy and a gas pipe. The gas pipe alloy of the domesticgas stove comprises, by mass, 1.95wt%-2.01wt% of C, 0.17wt%-0.20wt% of Si, 0.30wt%-0.60wt% of Mn, 0.001wt%-0.01wt% of P, 0.001wt%-0.012wt% of S, 0.20wt%-0.25wt% of Cr, 0.56wt%-0.62wt% of V, 5.5wt%-5.8wt% of Al, 90.61wt%-91.01wt% of Fe, 0.5wt%-0.67wt% of other alloy metal elements and the balance inevitable impurities. According to the adding manner of Al, Al4C3 is adopted, various alloys are usedfor smelting, and Al4C3 is added for refining; a surface oxidization film is compact, wear resistance is good, and oxidization resistance and cavitation resistance of the surface of the alloy are improved; and the gas pipe is made through the gas pipe alloy of the domestic gas stove, oxidization resistance and cavitation resistance are good, and the service life is long.
Description
technical field [0001] The invention relates to a gas pipe for a gas stove, in particular to a gas pipe alloy for a household gas stove, a preparation method thereof and a gas pipe. Background technique [0002] Gas stove is a common household stove, the common one is atmospheric combustion gas stove, or also known as premixed combustion gas stove, the gas is first mixed with air and then transported to the gas stove burner through the gas pipe for combustion. However, due to the safety considerations of the gas stove, the amount of temporary gas in the pipe is reduced to reduce the risk of tempering. The gas pipe in the existing gas stove has a small diameter, a high pressure inside the pipe, and a large flow rate. The gas pipe is coated or coated Therefore, the anti-oxidation of the inner side of the existing gas pipe depends on the anti-oxidation and anti-corrosion properties of the gas pipe material itself, such as ferrochrome alloy. [0003] However, the surface of the...
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