High-temperature-resistant alloy elbow and processing technology thereof

A high-temperature-resistant alloy and processing technology, which is applied in the coating process of metal materials, elbows, pipes/pipe joints/fittings, etc., can solve the problems of inconvenient practical application, unsatisfactory high-temperature resistance, and poor substrate bonding.

Pending Publication Date: 2021-08-24
江苏龙山管件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing research, the research on the surface treatment process of alloy elbows is getting more and more in-depth. In order to improve its high temperature resistance and corrosion resistance, the surface is usually treated and then coated with silicone coatings. However, conventional organic The combination of silicon coating with the substrate is poor during coating, and the high temperature resistance performance cannot meet our needs, which brings inconvenience to practical application

Method used

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  • High-temperature-resistant alloy elbow and processing technology thereof

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Comparison scheme
Effect test

Embodiment 1

[0038] A processing technology for a high-temperature-resistant alloy elbow, comprising the following steps:

[0039] (1) Take the alloy raw materials, mix them and place them in a vacuum induction furnace for smelting. During smelting, ultrasonically treat the melt with an ultrasonic power of 1kW and an ultrasonic frequency of 20kHz. Cool and forge to obtain an alloy elbow;

[0040] Alloy raw materials include: by mass percentage, carbon 0.02%, nitrogen 0.1%, manganese 1.3%, chromium 20%, nickel 10%, silicon 0.2%, aluminum 1.3%, zirconium 1.9%, lanthanum 2%, cerium 3%, neodymium 0.8%, the balance is iron.

[0041] (2) Take the alloy elbow, place it in acetone solution, clean it ultrasonically for 5 minutes, then wash it with absolute ethanol and deionized water in sequence, and dry it in vacuum; after drying, the surface is cleaned by laser, the laser power is 15W, and the pulse frequency is 600kHz , the scanning speed is 50mm / s, and the laser spot diameter is 70um;

[0042...

Embodiment 2

[0052] A processing technology for a high-temperature-resistant alloy elbow, comprising the following steps:

[0053] (1) Take the alloy raw materials, mix them and place them in a vacuum induction furnace for smelting. During smelting, ultrasonically treat the melt with an ultrasonic power of 2kW and an ultrasonic frequency of 20kHz, cool and forge to obtain an alloy elbow;

[0054] Alloy raw materials include: by mass percentage, carbon 0.02%, nitrogen 0.15%, manganese 1.4%, chromium 21%, nickel 11%, silicon 0.3%, aluminum 1.2%, zirconium 1.5%, lanthanum 1.5%, cerium 2.5%, neodymium 0.5%, the balance is iron.

[0055] (2) Take the alloy elbow, place it in an acetone solution, and ultrasonically clean it for 8 minutes, then wash it with absolute ethanol and deionized water in sequence, and dry it in vacuum; after drying, the surface is cleaned by laser, the laser power is 15W, and the pulse frequency is 600kHz , the scanning speed is 80mm / s, and the laser spot diameter is 70...

Embodiment 3

[0066] A processing technology for a high-temperature-resistant alloy elbow, comprising the following steps:

[0067] (1) Take the alloy raw materials, mix them and place them in a vacuum induction furnace for smelting. During smelting, ultrasonically treat the melt with an ultrasonic power of 2kW and an ultrasonic frequency of 20kHz, cool and forge to obtain an alloy elbow;

[0068] Alloy raw materials include: by mass percentage, carbon 0.02%, nitrogen 0.15%, manganese 1.5%, chromium 21%, nickel 12%, silicon 0.5%, aluminum 1%, zirconium 1.3%, lanthanum 1%, cerium 2%, neodymium 0.3%, the balance is iron.

[0069] (2) Take the alloy elbow, place it in acetone solution, clean it ultrasonically for 10 minutes, then wash it with absolute ethanol and deionized water in turn, and dry it in vacuum; after drying, the surface is cleaned by laser, the laser power is 15W, and the pulse frequency is 600kHz , the scanning speed is 100mm / s, and the laser spot diameter is 70um;

[0070] (...

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Abstract

The invention discloses a high-temperature-resistant alloy elbow and a processing technology thereof. The high-temperature-resistant alloy elbow comprises alloy raw materials, by mass, 0.02% of carbon, 0.1-0.15% of nitrogen, 1.3-1.5% of manganese, 20-21% of chromium, 10-12% of nickel, 0.2-0.5% of silicon, 1-1.3% of aluminum, 1.3-1.9% of zirconium, 1-2% of lanthanum, 2-3% of cerium, 0.3-0.8% of neodymium and the balance of iron. According to the formula, smelting and casting forming of an alloy matrix are carried out to obtain the alloy elbow, and the alloy elbow has excellent mechanical properties and high temperature resistance under the formula; and meanwhile, in the smelting process, ultrasonic treatment is carried out, the ultrasonic treatment conditions are limited to be that the ultrasonic power is 1-2kW, and the ultrasonic frequency is 20kHz, in the process, ultrasonic waves can generate the acoustic cavitation effect, local instantaneous high temperature and high pressure can be generated by alloy melt, the effects of dispersing the alloy phase and refining the alloy structure can be achieved, and the mechanical property and the high-temperature resistance of the alloy elbow can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of alloy elbows, in particular to a high-temperature-resistant alloy elbow and its processing technology. Background technique [0002] Alloy elbow is a general term for a variety of elbows. It is used to connect two pipes with the same nominal diameter, so that the pipe can make a 90° or other angle turn. It has a variety of materials, and alloy elbows are very versatile. [0003] In the existing research, the research on the surface treatment process of alloy elbows is getting more and more in-depth. In order to improve its high temperature resistance and corrosion resistance, the surface is usually treated and then coated with silicone coatings. However, conventional organic The silicon coating has poor bonding with the substrate, and its high temperature resistance cannot meet our needs, which brings inconvenience to practical application. [0004] In view of this situation, we disclose a high temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L43/00F16L58/10F16L58/18C22C38/04C22C38/02C22C38/06C22C38/50C22C33/04C21C7/00C23C26/00C09D183/04C09D161/12C09D7/61C09D7/63
CPCF16L43/001F16L58/10F16L58/18C22C38/001C22C38/04C22C38/02C22C38/06C22C38/50C22C38/005C22C33/04C21C7/00C23C26/00C09D183/04C09D7/61C09D7/63C09D5/18C08L2201/08C08K2201/011C08L61/12C08K3/38C08K5/544C08K3/36C08K3/34
Inventor 徐菁胡雄新陆楠卢佳卞晓丽
Owner 江苏龙山管件有限公司
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