A kind of preparation method of high-strength Antioxidant alloy material
The application is divisional application, original bill Patent No.: 201710355824.4, the applying date is on May 19th, 2017,
A kind of denomination of invention are as follows: high-strength Antioxidant alloy material and preparation method thereof.
Technical field
The present invention relates to melt alloy fields, specifically, being a kind of high strong anti-oxidation melt conjunction suitable for fuse
The preparation method of golden material.
Background technique
With the continuous social and economic development, electronic equipment is used widely, and the demand of fuse is consequently increased.It is molten
Disconnected device is according to electric current be more than specified value for a period of time after, Melt molten is made with the heat that its own is generated, to keep circuit disconnected
It opens;With a kind of current protector made of this principle.Fuse is widely used in high and low voltage electric distribution system and control system
It is using one of most common protection device as the protector of short circuit and overcurrent and in electrical equipment.
Fuse is generally made of insulator foot or supporter, contact, melt etc., and melt is the groundwork portion of fuse
Point, melt is equivalent to the one section of special conducting wire of series connection in circuit, and when short circuit or overload occur for circuit, electric current is excessive, melts
Body is melted because of overheat, to cut off circuit.Melt material has the characteristics that low relative melting points, stability of characteristics, is easy to fuse.Its
In, melt material mostly uses greatly the metals such as terne metal, sheffield plate, zinc, silver.
Since fuse is disposable product, and silver is natural currency, uses fine silver as melt material, cost compared with
Height, meanwhile, lead has biggish harm to human body and environment.Application No. is 200380100152.9 patents of invention to disclose Sn-
Bi-In alloy melt, the melt strength is lower, easily deforms, and the deformation of melt will lead to melt resistance and change, from
And influence the service performance of melt.On the other hand, melt will be chronically exposed in air, and alloy melt is due to oxidation in order to prevent
The resistance for influencing melt, needs to can be carried out promotion to the inoxidizability of alloy melt.
Summary of the invention
The main purpose of the present invention is to provide a kind of preparation methods of high-strength Antioxidant alloy material, to solve existing skill
The deficiency of art improves the intensity and inoxidizability of melt alloy material, so that alloy melt effectively be avoided to become because intensity is not high
Shape, and the problem of influence because of oxidation melt resistance.
To achieve the above objectives, the technical solution adopted by the present invention are as follows: a kind of high-strength Antioxidant alloy material by core and
Copper plate composition, wherein the core is grouped as by the group of following weight percent content: tin 42%~45%, copper 13%~
16%, aluminium 0.5%~1.2%, magnesium 1.2%~1.8%, scandium 0.2%~0.5%, inevitable impurity content≤2wt%,
Yu Weitie.
An embodiment according to the present invention, copper plate with a thickness of 0.10~0.15mm.
A kind of preparation method of high-strength Antioxidant alloy material comprising step:
(A) core forms, and the iron of corrresponding quality percentage, copper, aluminium, magnesium are uniformly mixed, and forms mixture;Tin is heated
To 520~550 DEG C, scandium is added and adds mixture after mixing evenly, is added in molding die after being again stirring for uniformly, temperature
150 DEG C are dropped to hereinafter, alloy material is able to be removed from the molds, completion molding obtains core blank;
(B) core is fine and close, and core blank is put into pressurizing mold, 210~220 DEG C are heated to together with pressurizing mold,
Then it pressurizeing to the core blank in pressurizing mold, pressure is 5MPa~8MPa, and 10~15min of pressure maintaining is cooled to room temperature,
Take out core blank;
(C) core blank obtained in step (B) is heated to 90 DEG C~110 DEG C by destressing, keeps the temperature 60~80min,
It is then cooled to room temperature;And
(D) layers of copper is electroplated, and carries out electro-coppering to the surface of core blank obtained in step (C), copper plate with a thickness of
0.10~0.15mm.
An embodiment according to the present invention, the core molding and the core densification of the step (B) of the step (A) are in hydrogen
Compression ring is completed under border, and hydrogen pressure is not more than 6000Pa.
An embodiment according to the present invention, iron, copper, aluminium, magnesium, scandium in the step (A) are powder, and granularity is not more than
350 mesh.
The present invention compared with the existing technology, mainly has the following advantages and beneficial effects:
(1) in core material, tin is low-melting-point metal, about 231 DEG C of fusing point, is easy fusing and fusing, the electric conductivity of copper
Can be good, copper is added, alloy melt is made to have good electric conductivity when unblown, in addition, the addition of copper can also improve conjunction
The intensity of golden melt;The addition of iron, so that alloy melt, when by larger current, local temperature is higher inside melt, at this moment
Iron can form alloy with tin, and copper can form alloy with aluminium, and magnesium can form alloy with tin, and resistance becomes larger, to accelerate to close
The fusing of golden melt, in addition, the addition of iron, can also reduce the cost of alloy melt;
(2) in preparation step (A), Sn is heated to 520~550 DEG C, the significantly larger than fusing point of Sn, is improved Sn's
Activity, so that the combination of Sn and Cu, Fe are improved, since Sn can form metallic compound, heating temperature at 550 DEG C or more with Fe
Degree should be not more than 550 DEG C;The step (A) and step (B) need to be completed under hydrogen environment, and hydrogen pressure is not more than 6000Pa,
It is that can generate oxide since Sn, Fe are when temperature is higher, the oxide of generation will affect the performance of alloy melt;It is added
Sc can be reacted with oxygen and impurity, purify matrix, and the oxygen that in addition a small amount of hydrogen can adhere to surfaces such as Fe, Cu carries out anti-
It answers, removes the oxygen on surface;
(3) in preparation step (B), core blank is put into pressurizing mold, certain temperature repressurization is heated to, is able to
The consistency for improving alloy melt, achievees the purpose that further increase intensity;
(4) in preparation step (C), destressing is able to the stress inside removal alloy melt, to extend alloy melt
Service life;
(5) since the surface in Sn is difficult direct copper plating, Cu, the Fe being added in core have with electro-coppering good
Compatibility can improve the plating performance of alloy melt, be able to carry out electricity directly on the core of alloy melt after Cu, Fe is added
Plating;Wherein, copper plate is able to that alloy melt is effectively prevent to aoxidize, and avoids being chronically exposed in air and aoxidizing, to influence molten
Bulk resistor;Copper plate cannot be too thick, and the too thick alloy melt that will lead to is difficult to break;Can not be too thin, coating is too thin, is transporting or is making
With when, layers of copper be easy polishing;Further, since the intensity of copper is greater than the intensity of tin, copper plate is also increased alloy melt
Intensity.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
Embodiment 1
A kind of high-strength Antioxidant alloy material is made of core and copper plate, wherein the core is by following weight percent
It is grouped as than the group of content: tin 42%, copper 15%, aluminium 1.0%, magnesium 1.2%, scandium 0.2%, inevitable impurity content 2wt%,
Remaining is iron.
The preparation method of the high-strength Antioxidant alloy material comprising steps of
(A) core forms, and Fe, Cu, Al, Mg are uniformly mixed according to the proportion, forms mixture;Sn is heated to 520 DEG C,
Sc is added and adds mixture after mixing evenly, is added in molding die after being again stirring for uniformly, temperature drops to 150 DEG C or less
When, alloy material can be removed from the molds, complete molding, obtain core blank, this step is completed under hydrogen environment, hydrogen
Air pressure is not more than by force 6000Pa;Fe, Cu that this step is added are powder, and granularity is not more than 350 mesh;
(B) core is fine and close, and core blank is put into pressurizing mold, is heated to 210 DEG C together with pressurizing mold, then right
Core blank in pressurizing mold pressurizes, pressure 5MPa, and pressure maintaining 10 is then cooled to room temperature, and takes out core blank, this
Step is completed under hydrogen environment, and hydrogen pressure is not more than 6000Pa;
(C) core blank obtained in (B) is heated to 90 DEG C by destressing, is kept the temperature 60min, is then cooled to room temperature;
(D) layers of copper is electroplated, and core blank obtained in step (C), carries out electro-coppering on surface, thickness of coated copper layer is
0.10mm。
Embodiment 2
A kind of high-strength Antioxidant alloy material is made of core and copper plate, wherein the core is by following weight percent
It is grouped as than the group of content: tin 43%, copper 14%, aluminium 0.8%, magnesium 1.6%, scandium 0.5%, inevitable impurity content
1.8wt%, remaining is iron.
The preparation method of the high-strength Antioxidant alloy material comprising steps of
(A) core forms, and Fe, Cu, Al, Mg are uniformly mixed according to the proportion, forms mixture;Sn is heated to 530 DEG C,
Sc is added and adds mixture after mixing evenly, is added in molding die after being again stirring for uniformly, temperature drops to 150 DEG C or less
When, alloy material can be removed from the molds, complete molding, obtain core blank, this step is completed under hydrogen environment, hydrogen
Air pressure is not more than by force 6000Pa;Fe, Cu that this step is added are powder, and granularity is not more than 350 mesh;
(B) core is fine and close, and core blank is put into pressurizing mold, is heated to 215 DEG C together with pressurizing mold, then right
Core blank in pressurizing mold pressurizes, pressure 6MPa, and pressure maintaining 12min is then cooled to room temperature, and takes out core hair
Base, this step are completed under hydrogen environment, and hydrogen pressure is not more than 6000Pa;
(C) core blank obtained in (B) is heated to 95 DEG C by destressing, is kept the temperature 65min, is then cooled to room temperature;
(D) layers of copper is electroplated, and core blank obtained in step (C), carries out electro-coppering on surface, thickness of coated copper layer is
0.12mm。
Embodiment 3
A kind of high-strength Antioxidant alloy material is made of core and copper plate, wherein the core is by following weight percent
It is grouped as than the group of content: tin 44%, copper 13%, aluminium 0.5%, magnesium 1.8%, scandium 0.4%, inevitable impurity content
1.6wt%, remaining is iron.
The preparation method of the high-strength Antioxidant alloy material comprising steps of
(A) core forms, and Fe, Cu, Al, Mg are uniformly mixed according to the proportion, forms mixture;Sn is heated to 540 DEG C,
Sc is added and adds mixture after mixing evenly, is added in molding die after being again stirring for uniformly, temperature drops to 150 DEG C or less
When, alloy material can be removed from the molds, complete molding, obtain core blank, this step is completed under hydrogen environment, hydrogen
Air pressure is not more than by force 6000Pa;Fe, Cu that this step is added are powder, and granularity is not more than 350 mesh;
(B) core is fine and close, and core blank is put into pressurizing mold, is heated to 220 DEG C together with pressurizing mold, then right
Core blank in pressurizing mold pressurizes, pressure 7MPa, and pressure maintaining 14min is then cooled to room temperature, and takes out core hair
Base, this step are completed under hydrogen environment, and hydrogen pressure is not more than 6000Pa;
(C) core blank obtained in (B) is heated to 100 DEG C by destressing, is kept the temperature 70min, is then cooled to room temperature;
(D) layers of copper is electroplated, and core blank obtained in step (C), carries out electro-coppering on surface, thickness of coated copper layer is
0.14mm。
Embodiment 4
A kind of high-strength Antioxidant alloy material is made of core and copper plate, wherein the core is by following weight percent
It is grouped as than the group of content: tin 45%, copper 16%, aluminium 1.2%, magnesium 1.7%, scandium 0.3%, inevitable impurity content
1.9wt%, remaining is iron.
The preparation method of the high-strength Antioxidant alloy material comprising steps of
(A) core forms, and Fe, Cu, Al, Mg are uniformly mixed according to the proportion, forms mixture;Sn is heated to 550 DEG C,
Sc is added and adds mixture after mixing evenly, is added in molding die after being again stirring for uniformly, temperature drops to 150 DEG C or less
When, alloy material can be removed from the molds, complete molding, obtain core blank, this step is completed under hydrogen environment, hydrogen
Air pressure is not more than by force 6000Pa;Fe, Cu that this step is added are powder, and granularity is not more than 350 mesh;
(B) core is fine and close, and core blank is put into pressurizing mold, is heated to 220 DEG C together with pressurizing mold, then right
Core blank in pressurizing mold pressurizes, pressure 8MPa, and pressure maintaining 15min is then cooled to room temperature, and takes out core hair
Base, this step are completed under hydrogen environment, and hydrogen pressure is not more than 6000Pa;
(C) core blank obtained in (B) is heated to 110 DEG C by destressing, is kept the temperature 80min, is then cooled to room temperature;
(D) layers of copper is electroplated, and core blank obtained in step (C), carries out electro-coppering on surface, thickness of coated copper layer is
0.15mm。
The alloy melt of each embodiment preparation is tested for the property.Wherein tensile strength test method uses GB/
T228.1-2010 " metal material stretching test part 1: room temperature test method ";Testing equipment uses WDW-300A electronics ten thousand
It can testing machine;The actual density of the core material of alloy melt uses buoyancy method, and instrument uses metal material densitometer AU-
200ME。
The core performance test of the high-strength Antioxidant alloy material of embodiment 1 to embodiment 4 preparation is as shown in table 1.
The core performance parameter of the alloy material of 1 embodiment 1-4 of table
As shown in Table 1, the high-strength Antioxidant alloy material prepared by embodiment 1 to 4, core material tensile strength
Up to 75~85MPa, consistency is >=98%, and the integral strength of alloy melt can be different due to the size of alloy melt, but because
It is generally higher than 220MPa for the intensity of copper, so the integral strength of alloy melt is greater than core material intensity, therefore the present invention makes
Stated with core material intensity, consistency of the present invention, calculation method is, first according to core material it is various at
Divide ratio, density, calculate theoretical density, then using the actual density of core material divided by theoretical density.Wherein, using Shen
Please number for 200380100152.9 patent documents production Sn-Bi-In alloy melt, tensile strength be 20~30MPa.
To which the high-strength Antioxidant alloy material is without containing precious metals such as silver, cost is relatively low, while without containing lead etc.
Pollution element, it is environmentally protective.
Embodiment 5 is to embodiment 8
The preparation method of the high-strength Antioxidant alloy material in embodiment 5-8 is with embodiment 3, the difference is that institute
State the constituent content of core.The each component content of core material of the embodiment 5 into embodiment 8 is shown in Table 2, prepared by embodiment 5 to 8
The high-strength Antioxidant alloy material core performance test it is as shown in table 3.
The each component content of the core material of 2 embodiment 5-8 of table
The core performance parameter of the alloy material of 3 embodiment 5-8 of table
Embodiment |
Tensile strength MPa |
Consistency |
Example 5 |
38 |
85 |
Example 6 |
30 |
82 |
Example 7 |
28 |
84 |
Example 8 |
15 |
78 |
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.