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High-temperature alloy, alloy hood manufactured from same and manufacturing technology of alloy hood

A high-temperature alloy and manufacturing process technology, applied in the field of high-temperature alloys, can solve problems such as low wear resistance, low oxidation and corrosion resistance, and short service life

Active Publication Date: 2013-06-26
浙江科得力新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low wear resistance, oxidation and corrosion resistance and short service life of the alloy air cap used in the circulating fluidized bed boiler in the prior art under high temperature conditions, thereby providing A superalloy with high wear resistance, good oxidation corrosion resistance and high wear resistance

Method used

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  • High-temperature alloy, alloy hood manufactured from same and manufacturing technology of alloy hood
  • High-temperature alloy, alloy hood manufactured from same and manufacturing technology of alloy hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] This implementation provides a kind of alloy that is used to manufacture the wind distribution plate wind cap of circulating fluidized bed, and its component and the content of each component are as follows:

[0098] C 0.45

[0099] Cr 25

[0100] Ni 35

[0101] Mo 2.4

[0102] Mn 1.7

[0103] Si 1.5

[0104] Nb 1.5

[0105] RE 0.2 (0.1 each for La and Ce)

[0106] N 0.3

[0107] Ti 0.2

[0108]B 0.1

[0109] Zr 0.15

[0110] Fe balance

[0111] The process of using the above-mentioned alloy provided in this embodiment to manufacture the wind cap of the circulating fluidized bed air distribution plate includes the following steps in turn:

[0112] A. In the intermediate frequency induction furnace, the melting temperature is controlled at 1640°C for smelting, specifically: adding nickel, chromium, carbon, niobium, manganese, molybdenum, boron, silicon, titanium, zirconium, Nitrogen and rare earth, among them, nickel, chromium and carbon are added when the f...

Embodiment 2

[0123] This implementation provides a kind of alloy that is used to manufacture the wind distribution plate wind cap of circulating fluidized bed, and its component and the content of each component are as follows:

[0124] C 0.50

[0125] Cr 27

[0126] Ni 33

[0127] Mo 2.5

[0128] Mn 1.75

[0129] Si 1.7

[0130] Nb 1.4

[0131] RE 0.27 (0.135 each for La and Ce)

[0132] N 0.25

[0133] Ti 0.3

[0134] B 0.09

[0135] Zr 0.1

[0136] Fe balance

[0137] The process of using the above-mentioned alloy provided in this embodiment to manufacture the wind cap of the circulating fluidized bed air distribution plate includes the following steps in turn:

[0138] A. In the intermediate frequency induction furnace, the melting temperature is controlled at 1660°C for smelting, specifically: adding nickel, chromium, carbon, niobium, manganese, molybdenum, boron, silicon, titanium, zirconium, Nitrogen and rare earth, among them, nickel, chromium and carbon are added when...

Embodiment 3

[0149] This implementation provides a kind of alloy that is used to manufacture the wind distribution plate wind cap of circulating fluidized bed, and its component and the content of each component are as follows:

[0150] C 0.55

[0151] Cr 28

[0152] Ni 32

[0153] Mo 2.6

[0154] Mn 1.6

[0155] Si 1.6

[0156] Nb 1.6

[0157] RE 0.3 (0.15 each for La and Ce)

[0158]N 0.2

[0159] Ti 0.25

[0160] B 0.085

[0161] Zr 0.2

[0162] Fe balance

[0163] The process of using the above-mentioned alloy provided in this embodiment to manufacture the wind cap of the circulating fluidized bed air distribution plate includes the following steps in turn:

[0164] A. In the intermediate frequency induction furnace, the smelting temperature is controlled at 1680°C for smelting, specifically: add nickel, chromium, carbon, niobium, manganese, molybdenum, boron, silicon, titanium, zirconium, Nitrogen and rare earth, among them, nickel, chromium and carbon are added when the ...

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PUM

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Abstract

The invention provides a high-temperature alloy which comprises the components such as C, Cr, Ni, Mo, Mn, Si, Nb, RE, N, Ti, B, Zr and the like, wherein the optimal content of each component is selected after reasonable analysis and repeated tests so that the components of the alloy realize the best interaction effect; and the tests prove that the high-temperature alloy provided by the invention is obviously superior to 25-20 steel and 316 steel in terms of average hardness, high-temperature oxidation resistance, high-temperature corrosion resistance and high-temperature washout resistance, and has good high-temperature comprehensive performance.

Description

technical field [0001] The invention relates to a high-temperature alloy, an alloy hood made of the alloy and a manufacturing process of the alloy hood, in particular to a high-temperature alloy used in the field of circulating fluidized bed boilers, and belongs to the technical field of high-temperature alloys. Background technique [0002] Circulating fluidized bed boiler (CFB boiler) is a new type of power generation and heating boiler widely promoted and applied at home and abroad. It has wide fuel adaptability, sufficient combustion, large load adjustment range, fast adjustment speed, low environmental pollution, and dust Therefore, CFB boiler has become one of the development directions of low-quality coal and garbage fuel energy utilization technology. However, judging from the operation of CFB boiler units that have been put into production in my country, CFB boilers generally have problems such as severe wear of pressure-bearing parts, poor safety and stability, and...

Claims

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Application Information

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IPC IPC(8): C22C38/54C22C30/00C22C1/03C22C33/06B01J8/44
Inventor 刘少光刘沁昱
Owner 浙江科得力新材料有限公司
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