Low-temperature high-efficiency machining method of amorphous alloy

An amorphous alloy and processing method technology, applied in metal processing and other directions, can solve the problems of increasing the processing procedures and production costs of amorphous alloy products, losing the excellent amorphous properties of materials, and unfavorable machining production practices, and achieve high efficiency. Effects of processing, avoiding material crystallization behavior, preventing deformation heating and friction heating

Active Publication Date: 2019-04-12
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0003] A processing method in the prior art that uses frictional heat generation to make the alloy be in a supercooled liquid phase; however, amorphous alloys are metastable materials, and improper heating and cooling during processing can easily cause the crystallization behavior of the material. The material loses the excellent properties of amorphous alloys, and the use of external friction heat generation method increases the processing and production costs of amorphous alloy products, which is not conducive to the application of mechanical processing production practice
[0004] Another processing method in the prior art is to adjust the processing parameters in the rough processing stage so that the alloy processing temperature is in the solid region above the crystallization temperature; The temperature is in the supercooled liquid phase region temperature of the alloy (the temperature in the supercooled liquid phase region is lower than the crystallization temperature), and at the same time, the residual crystallization layer formed by rough machining is removed to realize the non-crystallization processing of the amorphous alloy; but due to the conventional cooling and lubrication The cooling limitation of the technology, in order to prevent processing crystallization during the finishing process, the processing parameters are often set small, which is not conducive to improving the processing efficiency

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  • Low-temperature high-efficiency machining method of amorphous alloy
  • Low-temperature high-efficiency machining method of amorphous alloy
  • Low-temperature high-efficiency machining method of amorphous alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A low-temperature and high-efficiency processing method for amorphous alloys, comprising the following steps:

[0039] (1) Divide the composition into Zr 41.2 Ti 13.8 Cu 10 Ni 12.5 be 22.5 The amorphous alloy was prepared into an amorphous plate of 100mm×20mm×2mm. The crystallization temperature of the amorphous alloy is 489°C, the hardness is 560HV, and the compressive strength is 1900 MPa; the amorphous alloy plate is fixed on the working platform of the processing machine tool;

[0040] (2) Select a 4-blade carbide-coated end mill with a diameter of 6mm, clamp the tool, determine the machining origin, and prepare for side milling of the amorphous alloy to be processed into a surface;

[0041] (3) Fix the low-temperature nozzle on the machine tool, align the nozzle with the cutting edge of the tool, and the distance between the nozzle and the cutting edge of the tool is 10mm;

[0042] (4) Set the cooling and lubrication parameters of the low-temperature cool...

Embodiment 2

[0046] A low-temperature and high-efficiency processing method for amorphous alloys, comprising the following steps

[0047] (1) The component Zr 62.20 Cu 31.73 Al 3.23 Ni 2.84 The amorphous alloy is prepared as an amorphous rod with a diameter of 6mm and a length of 180mm, the crystallization temperature is 493°C, the hardness is 493HV, and the compressive strength is 1400 MPa; the amorphous rod is fixed by a three-jaw chuck on the processing The working platform of the machine tool is processed by G-100 full-function CNC lathe;

[0048] (2) Select the upright cubic boron nitride turning insert, clamp the tool, determine the machining origin, and prepare for external turning;

[0049] (3) Fix the low-temperature nozzle on the turret, align the nozzle with the cutting edge of the tool, and the distance between the nozzle and the cutting edge of the tool is 5mm;

[0050] (4) Set the cooling and lubrication parameters of the low-temperature cooling and lubrication equipment...

Embodiment 3

[0054] A low-temperature and high-efficiency processing method for amorphous alloys, comprising the following steps:

[0055] (1) The component Zr 52.5 Cu 17.9 Ni 14.6 Al 10 Ti 5 The amorphous alloy was prepared into an amorphous plate of 80mm×20mm×1mm. The crystallization temperature of the amorphous alloy is 510°C, the melting temperature is 698°C, the hardness is 500HV, and the compressive strength is 1800 MPa. The amorphous alloy plate is fixed on the working platform of the processing machine tool;

[0056] (2) Select a 4 mm diameter 4-flute carbide-coated end mill, clamp the tool, determine the machining origin, and prepare for side milling of the amorphous alloy to be processed into a surface;

[0057] (3) Fix the low-temperature nozzle on the spindle of the machine tool, align the nozzle with the cutting edge of the tool, and the distance between the nozzle and the cutting edge of the tool is 20 mm;

[0058] (4) Set the cooling and lubrication parameters of the l...

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Abstract

The invention relates to a low-temperature high-efficiency machining method of an amorphous alloy. The low-temperature high-efficiency machining method of the amorphous alloy comprises the following steps that (1) an amorphous alloy workpiece is fixed to a working platform of a machining machine tool; (2) a tool is mounted and clamped to determine an origin of machining; (3) a low-temperature nozzle is fixed to a main shaft of the machine tool, the nozzle is aligned with the edge part of the tool, and the distance between the nozzle and the tool cutting edge is 5-40mm; (4) cooling and lubrication parameters of low-temperature cooling and lubrication equipment are set, the low-temperature cooling and lubrication equipment is started, and the nozzle is enabled to spray a small amount of lubricating medium and cooling gas to the tool and the amorphous alloy workpiece; and (5) when the temperature at the nozzle reaches a preset temperature range, the cutting speed, feeding speed and back engagement of the cutting edge of the machining machine tool which are matched with the cooling and lubrication parameters are set, and the machining machine tool is started to perform machining on thealloy workpiece. On the premise that the machining temperature being lower than the crystallization temperature of the alloy is ensured, the crystallization behavior of a material is avoided, the amorphous machining surface with high quality is obtained, and the high efficiency machining of the amorphous alloy is realized.

Description

technical field [0001] The invention relates to the technical field of amorphous alloy processing, in particular to a low-temperature and high-efficiency processing method for amorphous alloys. Background technique [0002] Amorphous alloys have high specific strength (3.2×10 5 N m / kg), high elastic limit (about 2%), high fracture toughness, high hardness (480~550HV), superplasticity in supercooled liquid phase, good corrosion resistance and fatigue resistance, used in automobiles, electronics , aviation, machinery, military, chemical and biomedical equipment and other fields have a wide range of application prospects. The unique short-range order and long-range disordered atomic arrangement of amorphous alloy make it thermodynamically metastable and have strong temperature sensitivity: when the alloy temperature exceeds its crystallization temperature T x When the alloy material is crystallized, the material will lose its original excellent mechanical and chemical proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P25/00
CPCB23P25/003
Inventor 王成勇丁峰郑李娟张涛
Owner GUANGDONG UNIV OF TECH
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