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A high-efficiency processing method for amorphous alloys

An amorphous alloy and processing method technology, applied in the field of mechanical processing, can solve the problems of increasing the processing procedures and production costs of amorphous alloy products, unfavorable mechanical processing production practices, loss of excellent amorphous properties of materials, etc., so as to reduce processing costs, The effect of long service life and not easy to wear

Active Publication Date: 2020-09-15
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Amorphous alloys have poor plasticity at room temperature; although the alloys have good plasticity after crystallization, they lose the excellent performance of amorphous alloys; and alloys in the supercooled liquid phase state not only show good plasticity, but also when the deformation temperature drops below the glass transition temperature Tg , the alloy structure returns to the amorphous state
At present, a processing method has been disclosed that uses frictional heat generation to make the alloy in a supercooled liquid phase state; however, amorphous alloys are metastable materials, and improper heating and cooling during processing can easily cause the crystallization behavior of the material, making the The material loses the excellent properties of amorphous alloys, and the use of external frictional heat generation method increases the processing procedure and production cost of amorphous alloy products, which is not conducive to the application of mechanical processing production practice

Method used

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  • A high-efficiency processing method for amorphous alloys
  • A high-efficiency processing method for amorphous alloys
  • A high-efficiency processing method for amorphous alloys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides an efficient processing method for amorphous alloys: the composition is Zr 62.44 Cu 32.73 Al 2.9 Ni 2.14 The amorphous alloy was prepared into an amorphous plate of 100 mm × 20 mm × 2 mm. The glass transition temperature of the amorphous alloy is 410 °C, the crystallization temperature is 493 °C, the melting temperature is 673 °C, the hardness is 493 HV, and the compressive strength is 1400 MPa.

[0039]Rough machining: Put the amorphous alloy plate on the processing machine and use DMU 60T vertical machining center for processing. The tool uses a 6 mm diameter 6-edged carbide-coated end mill to perform side milling on the processed area of ​​the amorphous alloy. The rough machining parameters are set as cutting speed 94 m / min, feed rate 1000 mm / min, axial depth of cut 1 mm, and radial depth of cut 0.2 mm. The temperature in the processing area can reach 530°C, and the phase state of each part of the workpiece material during the cutting pr...

Embodiment 2

[0045] This embodiment provides a high-efficiency processing method for amorphous alloys: the composition Zr 62.20 Cu 31.73 Al 3.23 Ni 2.84 The amorphous alloy was prepared into an amorphous rod with a diameter of 6 mm and a length of 180 mm. The glass transition temperature of the amorphous alloy is 410 °C, the crystallization temperature is 493 °C, the melting temperature is 673 °C, the hardness is 493 HV, and the compressive strength is 1400 MPa.

[0046] Rough machining: put the amorphous bar on the processing machine tool, and use G-100 full-function CNC lathe for processing. The cutting tool is used for rough machining with carbide-coated turning blades for external turning of the processed area of ​​the amorphous alloy. The rough machining parameters are set as cutting speed 120 m / min, feed rate 500 mm / min, depth of cut 0.5 mm, the friction between the tool and the alloy and the heat of alloy deformation heat up, so that the temperature of the technical area in the ...

Embodiment 3

[0052] This embodiment provides a high-efficiency processing method for amorphous alloys: the composition Zr 52.5 Cu 17.9 Ni 14.6 Al 10 Ti 5 The amorphous alloy was prepared into an amorphous plate of 80 mm × 20 mm × 1 mm. The glass transition temperature of the amorphous alloy is 430 °C, the crystallization temperature is 510 °C, the melting temperature is 698 °C, the hardness is 500 HV, and the compressive strength is 1800 MPa.

[0053] Rough machining: Put the amorphous alloy plate on the processing machine and use DMU 60T vertical machining center for processing. The tool uses a 6 mm diameter 6-edged carbide-coated end mill to perform side milling on the processed area of ​​the amorphous alloy. The rough machining parameters are set as cutting speed 120 m / min, feed rate 600 mm / min, axial depth of cut 1 mm, and radial depth of cut 0.1 mm, with the friction with the alloy and the heat of alloy deformation heating up, making the rough machining stage The temperature in ...

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Abstract

The invention provides an efficient machining method of an amorphous alloy. The efficient machining method of the amorphous alloy comprises the following steps: (S1) rough machining: a machine tool isadopted to mechanically and roughly machine a machined area of an alloy; the machined area is heated through heating; and the heating temperature is between a crystallization temperature Tx of the alloy and a melting temperature Tm of the alloy, so that a material on the surface of the machined area of the alloy is crystallized; and (S2) finish machining: the machine tool is adopted to mechanically and finely machine the machined area to remove a crystallization area remained in the machined area; the machined area is cooled and lubricated during finish machining in the step (S2); and the cooling temperature is between a glass conversion temperature Tg of the alloy and the crystallization temperature Tx of the alloy. The machining method of the amorphous alloy can keep an amorphous stateof a machined surface, prevents the material crystallization behavior caused by improper heating and cooling in room-temperature machining, obtains a high-quality amorphous surface, can prevent damageof a machining cutter caused by high temperature of the material, prolongs the service life of the cutter, and reduces the machining cost.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to an efficient processing method for amorphous alloys. Background technique [0002] Amorphous alloy, also known as metallic glass, is an alloy that uses casting methods such as die casting or suction casting to form an amorphous structure material by supercooling the melt. It has a single uniform structure on the microscopic scale and does not contain vacancies, dislocations, crystals It has excellent high strength, high hardness, high elastic limit and good corrosion resistance and wear resistance. Although the structural characteristics of amorphous alloys provide excellent new materials for engineering applications, they also greatly limit the secondary processing and manufacturing of such alloy materials, including partial turning, milling, drilling, and planing of the alloy materials. Cutting, grinding and other mechanical processing. Amorphous alloys are amorphous at r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 王成勇丁峰郑李娟张涛杜策之
Owner GUANGDONG UNIV OF TECH