Hot working technology of improving performance of HSn70-1 alloy

A thermal processing and alloying technology, which is applied in the field of thermal processing of HSn70-1 alloy properties, can solve the problems of short service life and high cost, and achieve the effect of improving plasticity

Inactive Publication Date: 2016-02-10
周雪
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional electrical contact materials are precious metals such as Ag, Au, Pt alloys and their composite materials, which have high cost and short service life

Method used

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  • Hot working technology of improving performance of HSn70-1 alloy
  • Hot working technology of improving performance of HSn70-1 alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The material used in the experiment is copper (purity: 99.95%) as the matrix, mainly alloying element nickel (purity: 99.95%); melting at 1400 ° C, heat preservation for 2 hours, and then casting, the cast sample is heat treated, and then heated It can be extruded in an extrusion die. The heat treatment process parameters are: 1000°C-1100°C×6-20h.

[0013] Metallographic examination (material) HSn70-1 alloy, extruded bar, cast HSn70-1 alloy; (instrument) metallographic microscope; (reagent) hydrochloric acid, ferric chloride and water to prepare corrosion solution; X-ray diffraction test (Instrument) High temperature X-ray diffractometer; (Condition) Copper target; Vickers hardness test (Instrument) HVS-1000 microhardness tester; (Condition) F=9.8N, t=10s; Compression test (Material) Extrusion rod Material, 1050℃x20h; (instrument) Sansi XYA105C material testing machine.

[0014] The as-cast structure of HSn70-1 alloy is as follows: figure 1 (a). It can be seen that ...

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Abstract

The invention discloses a hot working technology of improving performance of HSn70-1 alloy. The hot working technology includes the steps of melting HSn70-1 alloy at 1400 DEG C, maintaining the temperature for 2 h, performing casting to obtain a sample, performing thermal treatment to the sample, and extruding the sample in a hot extrusion die, wherein the process parameter of the thermal treatment is 1000-1100 DEG C and 6-20 h.

Description

technical field [0001] The invention relates to a processing technology of HSn70-1 alloy, in particular to a thermal processing technology of the properties of HSn70-1 alloy. Background technique [0002] Electrical contact materials are key materials for the preparation of electric power, electrical circuit on-off control and load current electrical appliances (such as switches, relays, starters, instruments, etc.). Electrical contact materials are one of the important materials in the process of current transmission and conversion. Electrical contact materials are the core components and key materials of electrical switches, and are responsible for the tasks of connecting and disconnecting circuits and load currents. The material properties determine the breaking capacity and contact reliability of electrical switches. Due to the high technical content required for this type of thermostat, China has mainly relied on imports of such electrical contact composite materials b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22F1/08
Inventor 周雪
Owner 周雪
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