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A Fe-based amorphous alloy part and its preparation method

A technology for amorphous alloys and parts, applied in the field of Fe-based amorphous alloy parts and its preparation, can solve problems such as difficult parts, and achieve the effect of expanding the scope of application

Active Publication Date: 2019-08-20
TSC LASER TECH DEV BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the high hardness, high wear resistance and brittleness of amorphous alloy materials, it is difficult to obtain complex parts by machining technology.

Method used

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  • A Fe-based amorphous alloy part and its preparation method
  • A Fe-based amorphous alloy part and its preparation method
  • A Fe-based amorphous alloy part and its preparation method

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preparation example Construction

[0047] The preparation method of the Fe-based amorphous powder adopts water atomization, and the equipment adopts LD-WA / 50 type ultra-high pressure water atomization powder making equipment, which specifically includes the following steps:

[0048] (1) According to the specific chemical composition weight percentage of the amorphous powder to be prepared above, take the raw materials of corresponding weight: Fe, Cr, Mo, C and FeB, wherein the weight percentage of B in FeB is 18.5%, and the weight percentage of Fe is 81.5%;

[0049] (2) The raw materials Fe, Cr, FeB and 40-60% by weight of the raw materials Fe, Cr, FeB and 40% to 60% by weight of step (1), preferably 50% of C, are added in the preheated crucible melting furnace, and the melting furnace is heated and smelted. Power increased to 65-75KW;

[0050] Among them, the preheating steps of the crucible furnace are: preheating power 30KW, preheating time 30min.

[0051] (3) After all the added raw materials are melted, ...

specific Embodiment 1

[0056] (1) Weigh the corresponding weight of raw materials: Fe35.04kg, Cr20.76kg, Mo28.74kg, C3.59kg and FeB11.87kg;

[0057] (2) Add the raw material Fe, Cr, FeB and 1.80kg of C that has been weighed in the crucible melting furnace that has been preheated, the melting furnace is heated and smelted, and the power of the melting furnace is increased to 70KW;

[0058] (3) After all the added raw materials are melted, add the remaining weight of C and Mo, and continue to heat up the furnace for melting, and the power of the furnace is increased to 85KW. At this time, the test temperature is 1560°C;

[0059] (4) After all the raw materials are melted, the test temperature is 1630°C again, and atomization, drying, and sieving are carried out according to the above atomization steps, and the chemical composition is Fe 40 Cr 20 Mo 15 C 15 B 10 Fe-based amorphous powder.

specific Embodiment 2

[0060] The specific embodiment 2 of this preparation method is:

[0061] (1) Weigh the corresponding weight of raw materials: Fe29.61kg, Cr26.05kg, Mo28.86kg, C3.61kg and FeB11.87kg;

[0062] (2) The raw materials Fe, Cr, FeB and 1.45kg of C that are weighed are added in the crucible melting furnace that has been preheated, and the melting furnace is heated and smelted, and the power of the melting furnace is increased to 70KW;

[0063] (3) After all the added raw materials are melted, add the remaining weight of C and Mo, and continue to heat up the furnace for melting, and the power of the furnace is increased to 85KW. At this time, the test temperature is 1590°C;

[0064] (4) After all the raw materials are melted, the test temperature is 1650°C again, and atomization, drying, and screening are carried out according to the above atomization steps, and the chemical composition is Fe 35 Cr 25 Mo 15 C 15 B 10 Fe-based amorphous powder.

[0065] Choose the chemical compos...

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Abstract

The invention discloses an Fe-based amorphous alloy part. The part is prepared from Fe-based amorphous powder by 3D printing technology. The Fe-based amorphous powder includes: 39-45% Fe, 20-26% Cr, 29% Mo , 4% C and 2% B. Also disclosed is the preparation method of the Fe-based amorphous alloy part, including: (1) preparing Fe-based amorphous powder: A, weighing the corresponding raw materials according to the weight percentage of the composition: Fe, Cr, Mo, C and FeB; B 1. Add raw materials Fe, Cr, FeB and 40-60% by weight of C into the preheated crucible furnace, and heat up the furnace for smelting; The furnace continues to heat up and smelt; D. After all the raw materials are melted, atomize, dry, and sieve; (2) use the prepared amorphous powder to prepare by 3D technology. The invention can prepare amorphous alloy parts with large size and complex shape, breaks through the limitation of critical size in the existing method, and expands the application range of amorphous alloy parts.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to an Fe-based amorphous alloy part and a preparation method thereof. Background technique [0002] Amorphous alloys, also known as metallic glasses, are alloys in which atoms are arranged in long-range disorder and short-range order. Compared with traditional crystalline alloys, amorphous alloys have no long-range ordered structure, and their atomic arrangement does not have the periodicity of crystalline alloys. At the same time, since the amorphous alloy "inherited" the structural arrangement characteristics of liquid atoms, it does not have the organizational and defect characteristics existing in crystal alloys such as vacancies, dislocations, and slippage. The special structure of amorphous alloy makes it have special physical and chemical properties such as mechanical properties, magnetic properties, electrical properties and corrosion resistance. Excellent properties m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02B22F9/08B22F1/00B22F3/105B33Y10/00B33Y70/00
CPCB22F1/0003C22C33/003C22C45/02B22F9/082B33Y10/00B33Y70/00B22F2009/0848B22F10/00B22F10/34B22F10/36B22F10/366B22F10/20Y02P10/25
Inventor 马英杰李广生孙峰盘宝珠
Owner TSC LASER TECH DEV BEIJING CO LTD