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Alloy for precision machining jig and preparation method thereof

A technology for precision machining and alloying, which is applied in the field of alloys for precision machining fixtures and their preparation to achieve the effects of improving product quality and yield, ensuring reliability, dimensional accuracy, and high hardness

Active Publication Date: 2018-01-12
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%, the balance is aluminum powder. The beryllium powder, zirconium powder, calcium, molybdenum powder, vanadium powder, tin powder, copper powder, and aluminum powder are weighed according to mass percentages and mixed uniformly. After smelting, a quick-setting sheet with an average thickness of 0.1-0.3mm is formed. The quick-setting flakes are crushed by hydrogen, and then crushed to obtain coarse alloy powder after dehydrogenation. The alloy coarse powder is cold-pressed and formed at a pressure of 300 MPa, and then placed in a sintering furnace for calcination. The temperature is raised to 580°C and kept at this temperature for 1 hour, then the temperature is raised to 650...

Embodiment 2

[0021] In the embodiment of the present invention, an alloy for precision machining fixtures is composed of the following raw materials in 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%, the balance is aluminum powder. The beryllium powder, zirconium powder, calcium, molybdenum powder, vanadium powder, tin powder, copper powder, and aluminum powder are weighed according to mass percentages and mixed uniformly. After smelting, a quick-setting sheet with an average thickness of 0.1-0.3mm is formed. The quick-setting flakes are crushed by hydrogen, and then crushed to obtain coarse alloy powder after dehydrogenation. The coarse alloy powder is cold-pressed and formed with a pressure of 320MPa, and then placed in a sintering furnace for calcination. The temperature is first raised to 600°C and kept at this temperature for 1.2h, and then the temperature is raised to 650°C a...

Embodiment 3

[0023] In the embodiment of the present invention, an alloy for precision machining fixtures is composed of the following raw materials in mass percentages: 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%, the balance is aluminum powder. The beryllium powder, zirconium powder, calcium, molybdenum powder, vanadium powder, tin powder, copper powder, and aluminum powder are weighed according to mass percentages and mixed uniformly. After smelting, a quick-setting sheet with an average thickness of 0.1-0.3mm is formed. The quick-setting flakes are crushed by hydrogen, and then crushed to obtain coarse alloy powder after dehydrogenation. The alloy coarse powder is cold-pressed to a pressure of 310MPa, and then placed in a sintering furnace for calcination. 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...

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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] Fixture is a device used to fix the processing object during the mechanical manufacturing process so that it occupies the correct position to accept construction or inspection. Broadly speaking, in any process in the process, a device used to quickly, conveniently and safely install a workpiece can be called a fixture. For example, 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 of the size, geometry, and mutual position accuracy with other surfaces specified in the drawing, the workpiece must be installed (positioned) and cla...

Claims

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Application Information

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Patent Type & Authority Patents(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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