Alloy for precise machining clamp and preparation method for alloy

A technology for precision machining and alloying, applied in the field of alloys for precision machining fixtures and their preparation, to achieve the effects of high fracture toughness and corrosion resistance, long service life and high hardness

Active Publication Date: 2017-06-30
舒城久联精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alloys in the prior art cannot take into account high flexural strength and fracture toughness while having a high hardness index

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In the embodiment of the present invention, an alloy for precision machining fixtures is composed of the following raw materials according to mass percentage: beryllium powder 1.5%, zirconium powder 1.9%, calcium 5.3%, molybdenum powder 3.0%, vanadium powder 0.8%, tin powder 0.3% %, copper powder 7.2%, and the balance is aluminum powder. Weigh beryllium powder, zirconium powder, calcium, molybdenum powder, vanadium powder, tin powder, copper powder and aluminum powder according to mass percentage, mix them evenly, and make quick-setting sheets with an average thickness of 0.1-0.3 mm after melting. The quick-setting sheet is subjected to hydrogen crushing, dehydrogenated and crushed to obtain alloy coarse powder. The alloy coarse powder is cold-pressed to 300MPa, and then placed in a sintering furnace for calcination. First, the temperature is raised to 580°C, and kept at this temperature for 1 hour, then the temperature is raised to 650°C, and vacuum is drawn at this te...

Embodiment 2

[0021] In the embodiment of the present invention, an alloy for precision machining fixtures is composed of the following raw materials according to mass percentage: beryllium powder 2.3%, zirconium powder 2.7%, calcium 6.1%, molybdenum powder 3.8%, vanadium powder 1.5%, tin powder 0.7% %, copper powder 8%, and the balance is aluminum powder. Weigh beryllium powder, zirconium powder, calcium, molybdenum powder, vanadium powder, tin powder, copper powder and aluminum powder according to mass percentage, mix them evenly, and make quick-setting sheets with an average thickness of 0.1-0.3 mm after melting. The quick-setting sheet is subjected to hydrogen crushing, dehydrogenated and crushed to obtain alloy coarse powder. The alloy coarse powder is cold-pressed to 320MPa, and then placed in a sintering furnace for calcination. First, the temperature is raised to 600°C, and kept at this temperature for 1.2h, and then the temperature is raised to 650°C, and pumped at this temperature...

Embodiment 3

[0023] In the embodiment of the present invention, an alloy for precision machining fixtures is composed of the following raw materials according to mass percentage: beryllium powder 1.8%, zirconium powder 2.1%, calcium 5.5%, molybdenum powder 3.2%, vanadium powder 1%, tin powder 0.4% %, copper powder 7.4%, and the balance is aluminum powder. Weigh beryllium powder, zirconium powder, calcium, molybdenum powder, vanadium powder, tin powder, copper powder and aluminum powder according to mass percentage, mix them evenly, and make quick-setting sheets with an average thickness of 0.1-0.3 mm after melting. The quick-setting sheet is subjected to hydrogen crushing, dehydrogenated and crushed to obtain alloy coarse powder. The alloy coarse powder is cold-pressed to 310MPa, and then placed in a sintering furnace for calcination. First, the temperature is raised to 590°C, and kept at this temperature for 1.1h, and then the temperature is raised to 650°C, and pumped at this temperature...

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PUM

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Abstract

The invention discloses alloy for a precise machining clamp and a preparation method for the alloy. The clamp comprises the following raw materials of, by mass, 1.5%-2.3% of beryllium powder, 1.9%-2.7% of zirconium powder, 5.3%-6.1% of calcium, 3.0%-3.8% of molybdenum powder, 0.8%-1.5% of vanadium powder, 0.3%-0.7% of tin powder, 7.2%-8% of copper powder, and the balance aluminum powder. According to the alloy for the precise machining clamp and the preparation method for the alloy, the alloy obtained after the beryllium powder, zirconium powder, calcium, molybdenum powder, vanadium powder, tin powder, copper powder and aluminum powder are subjected to smelting, rapid hardening, hydrogen decrepitation, cold press molding and segmental calcination under the action of scientific cooperation of the component contents is uniform in structure, has high hardness, high breaking tenacity and corrosion resistance, can be applied to the precise machining clamp, and can further eliminate residual stress of a high-temperature part when being matched with the high-temperature part, and the usage reliability and the size precision of the part are ensured. The alloy for the precise machining clamp and the preparation method for the alloy have the advantages that service life is long, high production efficiency is high, the size precision of the machined part is high, the part product quality and yield are improved, pollution to the environment is avoided, and the alloy and the preparation method are suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to an alloy for precision machining fixtures and a preparation method thereof. Background technique [0002] A fixture is a device used to fix the processing object in the process of mechanical manufacturing so that it occupies the correct position for construction or inspection. 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. Such as welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. Among them, machine tool fixtures are the most common, often referred to as fixtures. When processing a workpiece on a machine tool, in order to make the surface of the workpiece meet the technical requirements such as the size, geometric shape, and position accuracy with other surfaces specified in the drawing, the workpiece must be installed (positioned) and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/12C22C1/04B22F9/02B22F3/02B22F3/10
CPCB22F3/02B22F3/1017B22F9/023C22C1/0416C22C21/12
Inventor 蒋能新
Owner 舒城久联精密机械有限公司
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