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Household gas stove gas pipe alloy and its preparation method and gas pipe

A technology for gas pipes and gas stoves, applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., which can solve the problems of shortened service life, easy cavitation, and poor wear resistance of gas pipes

Active Publication Date: 2021-07-06
宁波正直科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

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  • Household gas stove gas pipe alloy and its preparation method and gas pipe
  • Household gas stove gas pipe alloy and its preparation method and gas pipe
  • Household gas stove gas pipe alloy and its preparation method and gas pipe

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.

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Abstract

The invention relates to a gas pipe for a gas stove, and discloses a gas pipe alloy for a household gas stove, a preparation method thereof, a gas pipe, and a gas pipe alloy for a household gas stove. 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%, Fe: 90.61-91.01wt%, other alloy metal elements: 0.5-0.67wt%, and the rest are unavoidable impurities. The addition method of Al is Al4C3, smelting with various alloys and adding Al4C3 for refining, Its surface has a dense oxide film, good wear resistance, and improves the anti-oxidation and anti-cavitation properties of the alloy surface. The gas pipe made of the gas pipe alloy for household gas stoves has good anti-oxidation and anti-cavitation properties and a long service life.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/06C22C33/08C21C1/08C21C5/35C22C37/06C22C37/10C22C38/02C22C38/04C22C38/06C22C38/24C22C38/28C22C38/30C22C38/60F16L9/02
CPCC21C1/08C21C5/35C22C33/06C22C33/08C22C37/06C22C37/10C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/24C22C38/28C22C38/30C22C38/60F16L9/02Y02P10/20
Inventor 马建明
Owner 宁波正直科技有限公司
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