CN104846233A - Preparation method of electric contact material - Google Patents
Preparation method of electric contact material Download PDFInfo
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- CN104846233A CN104846233A CN201510136169.4A CN201510136169A CN104846233A CN 104846233 A CN104846233 A CN 104846233A CN 201510136169 A CN201510136169 A CN 201510136169A CN 104846233 A CN104846233 A CN 104846233A
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- contact material
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- electric contact
- simple substance
- cogging
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Abstract
The invention relates to a preparation method of an electric contact material, which comprises the following steps: selecting the corresponding simple substance raw materials by mass percentage of 50-79% of Ag, 20-50% of Cu, 0.01-1% of Co, 0.01-0.5% of Si and 0.001-0.05% of Y; melting the simple substance raw materials under protection of inert gas or nitrogen to obtain an alloy material; continuously casting the alloy material; performing cold rolling and cogging, performing internal oxidation and heat treatment; and cleaning the surface. The method combines a concept of a functional gradient structure and a research of the electric contact material, employs an internal-oxidation method to design and prepare the electric contact material having a surface gradient-type structure, breakthroughs uniformity of a traditional electric contact material design and material performance, and employs the gradient distribution of the material component or performance, so that the integral performance of the material is increased.
Description
Technical field
The invention belongs to metal material field, be specifically related to a kind of preparation method of contact material.
Background technology
Electrical-contact element is high and low voltage switch electrical equipment core component, be responsible for the work such as electrical equipment connection, segmentation, water conservancy diversion, isolation, its performance directly affects the global reliability of the conducting system such as electrical equipment, electronics work, stability, accuracy and work-ing life, ensures that the key of electrical-contact element excellent property is research and development and the preparation thereof of novel material.At present the research and apply of contact material is become to the important topic in the fields such as electric power, automatization, communication, precision electronic device.
In the research of contact material, a crucial problem is: to the research of electrical contact process and associated materials often from the surface and interface contacted, be conceived in uniform texture wherein and even performance, think that contact is only the process on an interface or surface, and have ignored material surface and inner contact, have ignored the material impact of the non-uniform Distribution of performance.Particularly in material preparation process, outstanding " homogeneity " simply, and cause the performance reducing material on the whole.
Summary of the invention
Technical problem to be solved by this invention is the defect overcoming prior art, provides a kind of preparation method of contact material.
The present invention is achieved in that a kind of preparation method of contact material, and it comprises the steps:
Be Cu 20 ~ 50%, Co 0.01 ~ 1%, Si 0.01 ~ 0.5%, Y 0.001 ~ 0.05% according to mass percent, surplus is that Ag chooses corresponding simple substance starting material;
Under rare gas element or nitrogen protection, melting is carried out to described simple substance starting material, obtain alloy material;
Cold rolling cogging: the cogging of employing two-roller mill, pass deformation control 5% ~ 30%;
Internal oxidition thermal treatment: 600 ~ 800 DEG C of thermal treatment 6 ~ 8 hours;
Removing surface: with machinery and/or chemical method cleaning surface.
The invention provides a kind of contact material and preparation method thereof, the concept of function gradient structure and the research of contact material combine by it, and adopt internal oxidation design to prepare surface graded type structure contact material, break through on conventional electrical contacts design of material and " homogeneity " of material property, adopt the Gradient distribution of material composition or performance, thus improve the overall performance of material.The material of preparation has fine-grain structure, the CuO uniform particles Dispersed precipitate of separating out in metallic matrix Fu Yin top layer is in rich silver layer, substantially increase the density of alloy, intensity and hardness, enhance the resistance to arc erosion of alloy and anti-melting welding ability, the following pure silver belt generated of Fu Yin band effectively reduces resistivity, improves the conductivity of material monolithic.The Gradient distribution of material composition or performance can be made just because of the method, under making only to need low silver-colored member condition, just can meet fundamental characteristics such as contact material conductive and heat-conductive anticorrosive grade, thus on producing, greatly reduce the cost of manufacture of silver-based electric contact material.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the contact material that the preparation method of the contact material of the embodiment of the present invention obtains;
Fig. 2 be the embodiment of the present invention the photo of contact material that obtains of the preparation method of contact material.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention provides a kind of preparation method of contact material, and it comprises the steps:
S01: be Cu 20 ~ 50%, Co 0.01 ~ 1%, Si 0.01 ~ 0.5%, Y0.001 ~ 0.05% according to mass percent, surplus is that Ag chooses corresponding simple substance starting material;
S02: under rare gas element or nitrogen protection, melting is carried out to described simple substance starting material, obtain alloy material;
S03: alloy material described in continuous casting operation;
S04: cold rolling cogging: the cogging of employing two-roller mill, pass deformation control 5% ~ 30%;
S05: internal oxidition thermal treatment: 600 ~ 800 DEG C thermal treatments 6 ~ 8 hours;
S06: removing surface: with machinery and/or chemical method cleaning surface.
In step S05, described internal oxidition thermal treatment carries out in pure oxygen, and described pure oxygen refers to that oxygen purity is greater than in the oxygen atmosphere of 99.99%.
The surface graded structure of the contact material prepared by preparation method of the contact material that the invention process profit provides is that the top layer of alloy is the Fu Yinqu of silver content at more than 90wt%, in Fu Yinqu, Dispersed precipitate has particle diameter to be the copper oxide particle of 0.1 ~ 5 micron as shown in Figure 2, the degree of depth is at 20 ~ 500 microns, there is the pure silver belt of strip to import to below the rich silver band in top layer in rich silver layer oxide strip gap, below Fu Yin band, have a smooth thickness to be the pure silver belt of 50 ~ 100 microns.
Below in conjunction with specific embodiment, specific implementation of the present invention is described in detail.
Embodiment 1:
With the simple substance starting material of purity Ag >=99.99%, Cu >=99.99%, Co >=99.9%, Si >=99.9%, Y >=99.9% for raw material, by Cu 20wt%, Co 0.01wt%, Si 0.1wt%, Y 0.05wt%, surplus is that the mass percent of Ag is prepared burden;
Under argon gas (purity >=99.999%) protective condition, high frequency melting is carried out to the above-mentioned material prepared, obtain alloy material;
Cast described alloy material continuously;
Cold rolling cogging: the cogging of employing two-roller mill, pass deformation control 20%;
Internal oxidition thermal treatment: 600 DEG C of thermal treatment 8 hours in pure oxygen;
Removing surface: with No. 2000 fine sandpaper polishing surfaces to exposing white surface.
Embodiment 2:
With purity Ag >=99.99%, Cu >=99.99%, Co >=99.9%, Si >=99.9%, Y >=99.9% for raw material, by Cu 30wt%, Co 0.1wt%, Si 0.1wt%, Y 0.01wt%, surplus is that the mass percent of Ag is prepared burden;
Under argon gas (purity >=99.999%) protective condition, high frequency melting is carried out to the above-mentioned material prepared, obtain alloy material;
Cast described alloy material continuously;
Cold rolling cogging: the cogging of employing two-roller mill, pass deformation control 12%;
Internal oxidition thermal treatment: 800 DEG C are heated 6 hours;
Removing surface: with mechanical cleaning surface.
Embodiment 3:
With purity Ag >=99.99%, Cu >=99.99%, Co >=99.9%, Si >=99.9%, Y >=99.9% for raw material, by Cu 40wt%, Co 0.5wt%, Si 0.5wt%, Y 0.02wt%, surplus is that the mass percent of Ag is prepared burden;
Under nitrogen (purity >=99.999%) protective condition, high frequency melting is carried out to the above-mentioned material prepared, obtain alloy material;
Cast described alloy material continuously;
Cold rolling cogging: the cogging of employing two-roller mill, pass deformation control 25%;
Internal oxidition process: in pure oxygen, 800 DEG C are heated 6 hours;
Removing surface: adopt dilute hydrochloric acid pickling to remove surface scale.
Embodiment 4:
With purity Ag >=99.99%, Cu >=99.99%, Co >=99.9%, Si >=99.9%, Y >=99.9% for raw material, by Cu 50wt%, Co 1wt%, Si 0.5wt%, Y 0.05wt%, surplus is that the mass percent of Ag is prepared burden;
Under nitrogen (purity >=99.999%) protective condition, high frequency melting is carried out to the above-mentioned material prepared, obtain alloy material;
Cast described alloy material continuously;
Cold rolling cogging: the cogging of employing two-roller mill, pass deformation control 15%, are cold-rolled to thickness 2.5mm;
Internal oxidition process: 600 DEG C are heated 8 hours in pure oxygen;
Removing surface: with labor cleaning surface;
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a preparation method for contact material, is characterized in that, comprises the steps:
Be Cu 20 ~ 50%, Co 0.01 ~ 1%, Si 0.01 ~ 0.5%, Y 0.001 ~ 0.05% according to mass percent, surplus is that Ag chooses corresponding simple substance starting material;
Under rare gas element or nitrogen protection, melting is carried out to described simple substance starting material, obtain alloy material;
Cold rolling cogging: the cogging of employing two-roller mill, pass deformation control 5% ~ 30%;
Internal oxidition thermal treatment: 600 ~ 800 DEG C of thermal treatment 6 ~ 8 hours;
Removing surface: with machinery and/or chemical method cleaning surface.
2. the preparation method of contact material as claimed in claim 1, it is characterized in that, described internal oxidition thermal treatment carries out in pure oxygen.
3. the preparation method of contact material as claimed in claim 1 or 2, it is characterized in that, described pure oxygen refers to the oxygen that purity is greater than 99.99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136169.4A CN104846233A (en) | 2015-03-26 | 2015-03-26 | Preparation method of electric contact material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136169.4A CN104846233A (en) | 2015-03-26 | 2015-03-26 | Preparation method of electric contact material |
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| CN104846233A true CN104846233A (en) | 2015-08-19 |
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| CN201510136169.4A Pending CN104846233A (en) | 2015-03-26 | 2015-03-26 | Preparation method of electric contact material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575022A (en) * | 2023-03-31 | 2023-08-11 | 中国长江电力股份有限公司 | Method for cladding silver layer on copper substrate by laser and application of method in repair of high-current copper bus of hydroelectric generating set |
-
2015
- 2015-03-26 CN CN201510136169.4A patent/CN104846233A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575022A (en) * | 2023-03-31 | 2023-08-11 | 中国长江电力股份有限公司 | Method for cladding silver layer on copper substrate by laser and application of method in repair of high-current copper bus of hydroelectric generating set |
| CN116575022B (en) * | 2023-03-31 | 2023-11-28 | 中国长江电力股份有限公司 | Method for cladding silver layer on copper substrate by laser and application of method in repair of high-current copper bus of hydroelectric generating set |
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Application publication date: 20150819 |
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| RJ01 | Rejection of invention patent application after publication |