Alloy for precision machine tool fixture and preparation method thereof

A technology of precision machine tools and alloys, applied in the field of alloys, can solve problems such as high fracture toughness and hardness, and achieve the effects of high strength, no macrosegregation, and uniform alloy composition

Active Publication Date: 2018-06-12
安徽誉林汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the alloys in the prior art are difficult to balance high fracture toughness and hardness while having high strength indicators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the embodiment of the present invention, an alloy for a precision machine tool fixture is composed of the following raw materials according to mass percentage: Zn6.8%, Mg2.1%, Cu1.1%, Zr0.06%, Mn0.4%, Cr0. 12%, Si0.02%, Sn0.03%, and the balance is Al.

[0019] When preparing, include the following steps:

[0020] 1) Batching: batching is carried out according to the raw material composition and mass percentage ratio of the alloy used for precision machine tool fixtures;

[0021] 2) Melting: Put the raw materials into the melting furnace for melting, and control the temperature at 780°C for 3 hours to obtain a molten alloy;

[0022] 3) Atomization and injection molding: Nitrogen is used in the injection molding machine to atomize the molten alloy into fine droplets, and spray molding to form a blank;

[0023] 4) Subsequent thermal processing: use hot isostatic pressing, subject the blank to hot isostatic pressing at 400°C / 120MPa for 10 minutes, and cool to room temp...

Embodiment 2

[0026] In the embodiment of the present invention, an alloy for a precision machine tool fixture is composed of the following raw materials according to mass percentage: Zn9.1%, Mg2.8%, Cu2.5%, Zr0.29%, Mn1.0%, Cr0. 36%, Si0.06%, Sn0.09%, and the balance is Al.

[0027] When preparing, include the following steps:

[0028] 1) Batching: batching is carried out according to the raw material composition and mass percentage ratio of the alloy used for precision machine tool fixtures;

[0029] 2) Melting: Put the raw materials into the melting furnace for melting, and control the temperature at 780°C for 3 hours to obtain a molten alloy;

[0030] 3) Atomization and injection molding: Nitrogen is used in the injection molding machine to atomize the molten alloy into fine droplets, and spray molding to form a blank;

[0031] 4) Subsequent thermal processing: use hot isostatic pressing, subject the blank to hot isostatic pressing at 400°C / 120MPa for 10 minutes, and cool to room temp...

Embodiment 3

[0034] In the embodiment of the present invention, an alloy for a precision machine tool fixture is composed of the following raw materials according to mass percentage: Zn7.8%, Mg2.4%, Cu1.5%, Zr0.12%, Mn0.6%, Cr0. 27%, Si0.04%, Sn0.06%, and the balance is Al.

[0035] When preparing, include the following steps:

[0036] 1) Batching: batching is carried out according to the raw material composition and mass percentage ratio of the alloy used for precision machine tool fixtures;

[0037] 2) Melting: Put the raw materials into the melting furnace for melting, and control the temperature at 780°C for 3 hours to obtain a molten alloy;

[0038] 3) Atomization and injection molding: Nitrogen is used in the injection molding machine to atomize the molten alloy into fine droplets, and spray molding to form a blank;

[0039] 4) Subsequent thermal processing: use hot isostatic pressing, subject the blank to hot isostatic pressing at 400°C / 120MPa for 10 minutes, and cool to room temp...

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PUM

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Abstract

The invention discloses an alloy for a precision machine tool clamp and a preparation method of the alloy. The alloy for the precision machine tool clamp is prepared from, by mass percent, 6.8%-9.1% of Zn, 2.1%-2.8% of Mg, 1.1%-2.5% of Cu, 0.06%-0.29% of Zr, 0.4%-1.0% of Mn, 0.12%-0.36% of Cr, 0.02%-0.06% of Si, 0.03%-0.09% of Sn and the balance Al. After burdening, raw materials are put into a smelting furnace to be smelted, the temperature is controlled to be 780 DEG C for refining for 3 h, and the molten alloy is obtained; then nitrogen is used in an injection molding machine for atomizing the molten alloy into fine liquid drops, and injection molding is carried out to form a blank; hot isostatic pressing treatment is adopted, the blank is subjected to 400 DEG C / 120 MPa hot isostatic pressing for 10 h to 16 h, and cooling is carried out to room temperature; and according to process parameters of injection molding, the receiving disc descending speed ranges from 15 mm / min to 25 mm / min, the eccentric distance is 50 mm, the atomization pressure is 0.9 MPa, and the atomization distance ranges from 390 mm to 420 mm.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an alloy for precision machine tool fixtures and a preparation method thereof. Background technique [0002] The fixture is used to fix the processing object in the process of mechanical manufacturing, so that it occupies the correct position to accept the device for construction or inspection, also known as fixture. In a broad sense, any process in the process, the device used to install the workpiece quickly, conveniently and safely, can be called a fixture. Among them, machine tool fixtures are the most common, often referred to as fixtures. Machine tool fixtures are fixtures installed on the machine tool to process the inner and outer rotary surfaces and end faces of the workpiece. Most of them are installed on the spindle, and a few are installed on the saddle or bed. Machine tool fixtures have high requirements on the strength, fracture toughness and hardness of materials. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10B22F3/115B22F3/15
CPCB22F3/115B22F3/15C22C21/10
Inventor 蒋能新
Owner 安徽誉林汽车部件有限公司
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