CN114523230A - Preparation method and device of tin-based composite solder and tin-based composite solder - Google Patents
Preparation method and device of tin-based composite solder and tin-based composite solder Download PDFInfo
- Publication number
- CN114523230A CN114523230A CN202210215276.6A CN202210215276A CN114523230A CN 114523230 A CN114523230 A CN 114523230A CN 202210215276 A CN202210215276 A CN 202210215276A CN 114523230 A CN114523230 A CN 114523230A
- Authority
- CN
- China
- Prior art keywords
- tin
- stirring
- filler metal
- brazing filler
- metal matrix
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910000679 solder Inorganic materials 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 160
- 239000002184 metal Substances 0.000 claims abstract description 63
- 229910052751 metal Inorganic materials 0.000 claims abstract description 63
- 238000005219 brazing Methods 0.000 claims abstract description 61
- 239000000945 filler Substances 0.000 claims abstract description 59
- 239000011159 matrix material Substances 0.000 claims abstract description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 117
- 230000003068 static effect Effects 0.000 claims description 30
- 238000001125 extrusion Methods 0.000 claims description 15
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 27
- 239000013078 crystal Substances 0.000 abstract description 4
- 238000003672 processing method Methods 0.000 abstract description 4
- 238000005204 segregation Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 229910052718 tin Inorganic materials 0.000 description 49
- 238000000034 method Methods 0.000 description 16
- 230000008018 melting Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000005496 eutectics Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005551 mechanical alloying Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229910020994 Sn-Zn Inorganic materials 0.000 description 2
- 229910009069 Sn—Zn Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C13/00—Alloys based on tin
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to the technical field of composite solders, in particular to a preparation method and a device of a tin-based composite solder and the tin-based composite solder. The preparation method of the tin-based composite solder comprises the following steps: vertically placing a tin-based brazing filler metal matrix with a cylindrical structure, wherein a carbon material is filled in the tin-based brazing filler metal matrix; the stirring heads are oppositely arranged above the tin-based brazing filler metal matrix, rotate, meanwhile, the tin-based brazing filler metal matrix filled with the carbon material moves towards the stirring heads under the action of a pushing component, the stirring heads are in contact with the tin-based brazing filler metal matrix and continuously generate pressure and friction force, and the tin-based brazing filler metal matrix is plasticized and compounded with the carbon material. According to the invention, by means of a stirring friction processing method, carbon particles are dispersed and distributed in a tin-based brazing filler metal matrix, and the brazing filler metal is added with the carbon material particles under the action of violent stirring of a stirring pin in a semi-solid state, so that the problem of carbon particle segregation can be effectively solved; the stirring friction processing can also refine crystal grains and improve the strength and toughness of the brazing filler metal.
Description
Technical Field
The invention relates to the technical field of composite solders, in particular to a preparation method and device of a tin-based composite solder and the tin-based composite solder.
Background
The prior art adopts a liquid impregnation method, mechanical alloying and smelting, mechanical alloying and sintering, in-situ synthesis and the like to prepare the composite material of Sn-based solder and carbon, and has the following defects: (1) the wetting ability of the carbon particles to metal is poor, so that the carbon particles are directly added in the alloy smelting process, and the carbon particles are easy to delaminate and segregate, so that the components of the cast ingot are not uniform; (2) the carbon particles have low density, can float upwards when added into the liquid Sn-based brazing filler metal, can solve the problem of floating upwards by adopting a process of pre-plating metal on the carbon particles, but has complex process and is not environment-friendly; (3) the mechanical alloying process needs to make the brazing filler metal into powder, and has complex process and high price.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention relates to a preparation method of tin-based composite solder, which comprises the following steps:
vertically placing a tin-based brazing filler metal matrix with a cylindrical structure, wherein a carbon material is filled in the tin-based brazing filler metal matrix; the stirring heads are oppositely arranged above the tin-based brazing filler metal matrix, rotate, and meanwhile, the tin-based brazing filler metal matrix filled with the carbon material moves towards the stirring heads under the action of a pushing component, and the stirring heads are in contact with the tin-based brazing filler metal matrix and continuously generate pressure, friction and stirring action, so that the tin-based brazing filler metal matrix is plasticized and compounded with the carbon material.
According to the invention, carbon particles are dispersed and distributed in the tin-based brazing filler metal matrix by a stirring friction processing method, compared with the prior art, the process does not need additional heating, the brazing filler metal is compounded with carbon under the action of violent stirring of a stirring needle in a semi-solid state, and the problem of carbon particle segregation can be effectively solved; the stirring friction processing can also refine crystal grains and improve the strength and toughness of the brazing filler metal.
According to another aspect of the invention, the invention also relates to the tin-based composite solder prepared by the preparation method of the tin-based composite solder.
The tin-based solder and the carbon material are compounded, so that the melting point of the matrix solder can be kept unchanged, the wettability is improved, and the strength is improved.
According to another aspect of the invention, the invention also relates to a device used for implementing the preparation method of the tin-based composite solder, which comprises a friction stir component, a material accommodating component and a material pushing component; the lower end of the stirring friction component is connected with the material accommodating component, and the lower end of the material accommodating component is connected with the material pushing component;
a first accommodating cavity is formed in the material accommodating part, and a feeding hole is formed in the side wall of the material accommodating part;
the friction stir component comprises a static shaft shoulder, a bearing and a stirring head; a second accommodating cavity is formed in the static shaft shoulder, a rotary stirring cavity is formed in the side wall of the bottom end of the static shaft shoulder, and the rotary stirring cavity is communicated with the second accommodating cavity; the stirring head comprises a stirring needle, a stirring head shaft shoulder and a clamping end, the stirring head is connected with the static shaft shoulder through the bearing, the stirring needle extends downwards along the rotary stirring cavity until part of the stirring needle extends into the first accommodating cavity; a discharge hole is formed in the side wall of the bottom end of the static shaft shoulder and communicated with the rotary stirring cavity;
the pushing component comprises a pushing assembly, the pushing assembly comprises a pushing rod and a driving piece, and a material receiving end is arranged at the top end of the pushing rod; the material pushing rod reciprocates up and down in the first accommodating cavity under the action of the driving piece.
The device can realize the friction extrusion of the material and the stirring head, and can conveniently and efficiently realize the composition of the brazing filler metal and the carbon particles.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, carbon particles are dispersed and distributed in the tin-based brazing filler metal matrix by a stirring friction processing method, compared with the prior art, the process does not need additional heating, the brazing filler metal is compounded with carbon under the action of violent stirring of a stirring needle in a semi-solid state, and the problem of carbon particle segregation can be effectively solved; the stirring friction processing can also refine crystal grains and improve the strength and toughness of the brazing filler metal.
(2) The tin-based solder and the carbon material are compounded, so that the melting point of the solder can be kept unchanged, the wettability is improved, and the strength is improved.
(3) The device can realize the extrusion of materials and the stirring head, and can conveniently and efficiently realize the composition of the brazing filler metal and the carbon particles; the process is simple and continuous.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of an apparatus for producing a tin-based composite solder according to example 1 of the present invention;
FIG. 2 is a schematic view of a stirring head according to the present invention;
FIG. 3 is a schematic view of a stationary shoulder of the present invention;
FIG. 4 is a schematic three-dimensional structure of the material accommodating part according to the present invention;
fig. 5 is a schematic view of a device for preparing a tin-based composite solder in embodiment 2 of the present invention.
Reference numerals:
1-stirring head, 101-stirring pin, 102-stirring head shaft shoulder, 103-clamping end, 2-bearing, 3-static shaft shoulder, 301-discharge port, 302-second accommodating cavity, 303-rotary stirring cavity, 4-material accommodating component, 401-feed port, 5-cam mounting seat, 501-third accommodating cavity, 502-material pushing rod through hole, 6-material pushing component, 601-material pushing rod, 602-cam, 7-conveying belt, 8-carbon material accommodating device, 9-hydraulic cylinder component, 901-cylinder body and 902-hydraulic cylinder rod.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
According to one aspect of the invention, the invention relates to a preparation method of tin-based composite solder, which comprises the following steps:
vertically placing a tin-based brazing filler metal matrix with a cylindrical structure, wherein a carbon material is filled in the tin-based brazing filler metal matrix; the stirring heads are oppositely arranged above the tin-based brazing filler metal matrix, rotate, meanwhile, the tin-based brazing filler metal matrix filled with the carbon material moves towards the stirring heads under the action of a pushing component, the stirring heads are in contact with the tin-based brazing filler metal matrix and continuously generate pressure and friction force, and the tin-based brazing filler metal matrix is plasticized and compounded with the carbon material.
According to the invention, carbon particles are dispersed and distributed in the tin-based brazing filler metal matrix by a stirring friction processing method, compared with the prior art, the process does not need additional heating, the brazing filler metal is added with the carbon particles under the action of violent stirring of the stirring pins in a semi-solid state, and the problem of carbon particle segregation can be effectively solved. The stirring friction processing can also refine crystal grains and improve the strength and toughness of the brazing filler metal.
Preferably, the tin-based solder matrix comprises a Sn-9Zn solder.
Preferably, the carbon material includes graphite, carbon fiber, and carbon black.
Sn-Zn is a lead-free solder with relatively low price, and in a common lead-free solder system, the melting point of Sn-9Zn eutectic solder is closest to the Sn-37Pb eutectic solder, so that the Sn-Zn eutectic solder is considered to be an ideal lead-free solder for electronic packaging. Because chemical reaction does not occur between Sn and Zn, the microstructure of the Sn-9Zn solder consists of a Sn-rich phase matrix and a Zn-rich phase, wherein the Zn-rich phase is easy to oxidize, so that the wettability is poor; the Zn-rich phase in the Sn-9Zn brazing filler metal is needle-shaped, has small content and uneven distribution, and has a splitting effect on a Sn-rich phase matrix, so that the strength and the plasticity of the brazing filler metal are lower; zn reacts strongly with PCB pad materials such as Ni, Cu and the like, and a thicker brittle intermetallic compound is easily formed on an interface, so that the reliability of the joint is reduced; the Sn-9Zn brazing filler metal has large difference between the thermal expansion coefficient and the base metal, so that brazing seams crack due to thermal mismatch stress in the brazing and service processes, and the failure is caused. The carbon material has the advantages of high strength, large elastic modulus, small thermal expansion coefficient and the like, and the carbon material is uniformly added into the Sn-9Zn solder, so that on one hand, the carbon material plays a role in strengthening the second phase, the strength of the solder can be improved, and the melting point is not changed greatly; on the other hand, the oxidation of Zn-rich phase can be prevented, thereby improving the wettability; in addition, the diffusion of Zn-rich opposite interfaces can be inhibited, the growth of intermetallic compounds can be inhibited, and the joint reliability can be improved.
Preferably, the carbon material has a particle size of 200 to 500 mesh. In one embodiment, the particle size of the carbon material includes, but is not limited to, 300 mesh, 400 mesh.
Preferably, the tin-based solder substrate is cylindrical.
Preferably, the outer diameter of the tin-based brazing filler metal matrix is 30-100 mm, and the diameter of a center hole of the tin-based brazing filler metal matrix is 3-10 mm.
In one embodiment, the outer diameter of the tin-based solder matrix includes, but is not limited to, 40mm, 50mm, 60mm, 70mm, 80mm, 90 mm. The center hole diameter of the tin-based solder matrix includes but is not limited to 4mm, 5mm, 6mm, 7mm, 8mm, 9 mm.
According to another aspect of the invention, the invention also relates to the tin-based composite solder prepared by the preparation method of the tin-based composite solder.
The tin-based solder and the carbon material are compounded, so that the melting point can be kept unchanged, the wettability is improved, and the strength is improved.
According to another aspect of the invention, the invention also relates to a device adopted by the preparation method of the tin-based composite solder, which comprises a friction stir component, a material accommodating component and a material pushing component; the lower end of the friction stir component is connected with the material accommodating component, and the lower end of the material accommodating component is connected with the material pushing component;
a first accommodating cavity is formed in the material accommodating part, and a feeding hole is formed in the side wall of the material accommodating part;
the friction stir component comprises a static shaft shoulder, a bearing and a stirring head; a second accommodating cavity is formed in the static shaft shoulder, a rotary stirring cavity is formed in the side wall of the bottom end of the static shaft shoulder, and the rotary stirring cavity is communicated with the second accommodating cavity; the stirring head comprises a stirring needle, a stirring head shaft shoulder and a clamping end, the stirring head is connected with the static shaft shoulder through the bearing, the stirring needle extends downwards along the rotary stirring cavity until part of the stirring needle extends into the first accommodating cavity; a discharge hole is formed in the side wall of the bottom end of the static shaft shoulder and communicated with the rotary stirring cavity;
the pushing component comprises a pushing assembly, the pushing assembly comprises a pushing rod and a driving piece, and a material receiving end is arranged at the top end of the pushing rod; the material pushing rod reciprocates up and down in the first accommodating cavity under the action of the driving piece.
The device can realize the extrusion of materials and the stirring head, and can conveniently and efficiently realize the composition of the brazing filler metal and the carbon particles.
Preferably, the material pushing component further comprises a mounting seat, a third accommodating cavity is formed in the mounting seat, a material pushing rod through hole with a guiding function is communicated with the upper end of the third accommodating cavity, the material pushing rod through hole is communicated with the first accommodating cavity, and the driving piece is located in the third accommodating cavity.
Preferably, the pusher assembly comprises a cam-ram assembly, a crank-link assembly, or an oil hydraulic cylinder assembly.
The invention adopts the cam-ejector rod assembly, the crank-connecting rod assembly or the oil hydraulic cylinder assembly to ensure the reciprocating motion of the material pushing assembly so as to realize the receiving, pushing and extruding of materials, push the cast ingot to the stirring needle, continuously generate frictional extrusion force and ensure the continuous extrusion of the composite brazing filler metal.
Preferably, the lowest point of the reciprocating motion of the pushing assembly is: the upper end surface of the material carrying end is level with the bottom of the feed inlet of the material accommodating part; the highest point of the reciprocating motion of the pushing assembly is as follows: the distance between the upper end face of the material receiving end and the lower end face of the stirring needle is 2-5 mm.
In one embodiment, a cam is used as the pushing component, when the lowest point of the cam is located, the upper end surface of the material receiving end is level with the bottom of the feeding hole of the material accommodating part, and materials enter the material receiving end; the cam continues to rotate, the materials are contacted with the stirring head and generate pressure and friction, and when the highest point is reached, the distance between the end face of the material receiving end and the lower end face of the stirring needle is 2-5 mm.
Preferably, the mounting seat has a rectangular shape.
Preferably, the third accommodating cavity is cylindrical, and the radius of the cylindrical shape is 1-2 mm more than the maximum stroke of the cam.
Preferably, the material pushing rod through hole is cylindrical and perpendicular to the third accommodating cavity.
Preferably, the material receiving end is a cylinder, and the diameter of the material receiving end is 0.02-0.1 mm smaller than the inner diameter of the material accommodating part.
Preferably, the material containing part is of a hollow cylindrical structure.
Preferably, the inner diameter of the material accommodating part is equal to that of the through hole of the material pushing rod.
Preferably, the inner diameter of the material accommodating part is 0.02-0.1 mm larger than the diameter of the shaft shoulder of the stirring head. In one embodiment, the inner diameter of the material receiving part is 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm or 0.09mm larger than the diameter of the pin shoulder.
Preferably, the width of the feed inlet is 0.02-0.1 mm larger than the diameter of the shaft shoulder of the stirring head. In one embodiment, the width of the feed opening is 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm or 0.09mm greater than the diameter of the pin shoulder.
Preferably, the stirring head is of an axisymmetric structure.
Preferably, the stirring pin is conical, and the cone angle of the stirring pin is 10-30 degrees. The surface of the stirring pin is provided with threads. In one embodiment, the taper angle of the stir pin includes, but is not limited to, 12 °, 15 °, 17 °, 20 °, 22 °, 25 °, or 27 °.
Preferably, the static shaft shoulder is of an axisymmetric structure, and the static shaft shoulder is cylindrical in shape.
Preferably, the second accommodating cavity is cylindrical.
Preferably, the rotary stirring cavity is conical, and the cone angle of the rotary stirring cavity is 8-25 degrees. In one embodiment, the cone angle of the rotating stir chamber includes, but is not limited to, 12 °, 15 °, 17 °, 20 °, or 22 °.
Preferably, the cone angle of the rotary stirring chamber is smaller than the cone angle of the stirring pin.
Preferably, the number of the discharge ports is 1-6, and the inner diameter of the discharge ports is 5-15 mm.
In one embodiment, the number of the discharge ports is 2, 3, 4 or 5. The inner diameter of the discharge port is 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15 mm.
Preferably, the height of the feed inlet is 1-2 mm greater than that of the tin-based brazing filler metal substrate. In an embodiment, the height of the feed opening is 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm or 1.9mm greater than the height of the tin-based solder substrate.
The diameter of the end face of the bottom end of the stirring pin is 1-5 mm larger than the diameter of the center hole of the tin-based brazing filler metal matrix. In one embodiment, the diameter of the end surface of the bottom end of the stirring pin is 1.5mm, 2mm, 3mm or 4mm larger than the diameter of the central hole of the tin-based solder base body.
Preferably, the device further comprises a material conveying component; the material conveying part is arranged opposite to the feeding hole.
Preferably, the material conveying part comprises a conveying belt and a carbon material accommodating device; the carbon material accommodating device is arranged above the conveyor belt.
The ingot is conveyed to the material accommodating part feeding hole through the conveying belt, and in the conveying process on the conveying belt, the addition of carbon particles into the central through hole of the ingot is completed, so that the process is simple and continuous.
Preferably, the discharge port is further connected with a pipe extrusion component. The pipe extrusion component is arranged to extrude the annular composite brazing filler metal. Or directly extruding the bar without connecting the pipe extruding part.
The conveyer belt is band pulley or gear drive, and the conveyer belt up end is parallel and level with feed inlet bottom.
In a preferred embodiment, the stirring friction processing preparation device for the carbon particle reinforced Sn-9Zn composite soft solder comprises a stirring head, a static shaft shoulder, a material accommodating component, a material pushing assembly, a cam mounting seat, a conveying belt and a carbon material accommodating device; the stirring head is of an axisymmetric structure, and a clamping end, a shaft shoulder and a stirring needle are integrally processed on the stirring head. The stirring pin is conical, the cone angle is 10-30 degrees, and threads are processed on the stirring pin; the static shaft shoulder is of an axisymmetric structure, the shape is cylindrical, the inner cavity consists of a second accommodating cavity and a rotary stirring cavity, the second accommodating cavity is cylindrical, the rotary stirring cavity is conical, the cone angle of the rotary stirring cavity is 8-25 degrees, and the cone angle of the rotary stirring cavity is smaller than that of the stirring needle, so that the plasticized metal generates extrusion force; the side wall of the rotary stirring cavity is provided with discharge ports, the number of the discharge ports is 1-6, and the inner diameter is 5-15 mm; the shaft shoulder of the stirring head is tightly matched with the inner wall of the static shaft shoulder at the bottom of the second accommodating cavity through a bearing; the material containing part is of a hollow cylindrical structure, and the inner diameter of the material containing part is 0.02-0.1 mm larger than the diameter of the shaft shoulder of the stirring head; the side wall is provided with a feed inlet, and the width of the feed inlet is 0.02-0.1 mm larger than the diameter of the shaft shoulder. The distance between the top of the feed port and the top of the material accommodating part is more than half of the height of the feed port; the pushing assembly consists of a cam and a pushing rod, the top end of the pushing rod is provided with a material receiving end, and the diameter of the material receiving end is 0.02-0.1 mm smaller than the inner diameter of the material accommodating part; when the cam is at the lowest point, the upper end face of the material receiving end of the material pushing rod is flush with the bottom of the material inlet of the material accommodating part, and when the cam is at the highest point, the distance between the upper end face of the material receiving end of the material pushing rod and the lower end face of the stirring pin is 2-5 mm; the cam mounting seat is rectangular in shape and is provided with a third accommodating cavity, and the radius of the third accommodating cavity is 1-2 mm larger than the maximum stroke of the cam; a material pushing rod through hole perpendicular to the third accommodating cavity is formed in the upper portion of the mounting seat, and the diameter of the material pushing rod through hole is the same as that of the first accommodating cavity; the conveying belt is driven by a belt wheel or a gear, and the upper end surface of the conveying belt is flush with the bottom of the feed inlet of the material accommodating part; the carbon material accommodating part is conical and is arranged above the conveying belt.
In a preferred embodiment, a friction stir processing production method of a carbon particle-reinforced Sn-9Zn composite solder comprises the steps of:
the method comprises the following steps: casting a cylindrical Sn-9Zn solder ingot with a central through hole, wherein the height of the solder ingot is 1-2 mm smaller than that of a feed port; the outer diameter of the stirring head is 30-100 mm and is equal to the diameter of the shaft shoulder of the stirring head; the diameter of the central hole is 3-10 mm, and is 1-5 mm smaller than the diameter of the end part of the stirring pin; the diameter of the central through hole is related to the proportion of the outer diameter of the brazing filler metal ingot and the percentage content of required carbon particles, and the larger the outer diameter of the ingot is, the larger the diameter of the central through hole is; the higher the percentage content of the required carbon particles is, the larger the diameter of the central through hole is;
step two: the cast ingot is conveyed to the material accommodating part through the conveying belt, the cast ingot passes through the charging barrel in the feeding process, and carbon particles in the charging barrel fill the central through hole of the cast ingot under the action of self gravity;
step three: the cam rotates until the pushing rod is located at the lowest point, the cast ingot is conveyed into the first accommodating cavity, then the cam continues to rotate, and the cast ingot in the first accommodating cavity is extruded upwards until the pushing rod is located at the highest point;
step four: the cast ingot is contacted with a rotating stirring needle in the upward extrusion process, severe friction and softening are generated, carbon particles are fully mixed with the plasticized tin-based brazing filler metal matrix under the action of the stirring needle, and flow to a gap between the stirring needle and a static shaft shoulder under the driving of the stirring needle thread, and finally flow out of an extrusion hole on the static shaft shoulder to obtain the required composite brazing filler metal;
step five: the cam rotates until the pushing rod is positioned at the highest position, the friction extrusion is finished, and the cam continues to rotate to drive the pushing rod to move downwards until the lowest point;
and repeating the second step to the fifth step to realize the continuous stirring friction processing of the Sn-9Zn composite soft solder.
The invention will be further explained with reference to specific examples.
Fig. 1 is a schematic view of a device for producing a tin-based composite solder in example 1 of the present invention. FIG. 2 is a schematic view of a stirring head according to the present invention. FIG. 3 is a schematic view of a stationary shoulder of the present invention. Fig. 4 is a schematic three-dimensional structure diagram of the material accommodating part of the present invention. Fig. 5 is a schematic view of a device for preparing a tin-based composite solder in embodiment 2 of the present invention.
Example 1
A friction stir processing preparation device for tin-based composite solder comprises a stirring head 1, a static shaft shoulder 3, a material accommodating component 4, a pushing component 6, a cam mounting seat 5, a conveyor belt 7 and a carbon material accommodating device 8;
the stirring head 1 is of an axisymmetric structure, and a clamping end 103, a stirring head shaft shoulder 102 and a stirring pin 101 are integrally processed on the stirring head; the stirring pin 101 is conical, the cone angle is 30 degrees, and threads are machined on the stirring pin; the static shaft shoulder 3 is of an axisymmetric structure, the shape is cylindrical, an inner cavity consists of a second accommodating cavity 302 and a rotary stirring cavity 303, the second accommodating cavity 302 is cylindrical, the rotary stirring cavity 303 is conical, the cone angle of the rotary stirring cavity 303 is 20 degrees, and the cone angle of the rotary stirring cavity 303 is smaller than that of the stirring needle 101, so that the plasticized metal generates extrusion force; the side wall of the rotary stirring cavity 303 is provided with discharge ports 301, the number of the discharge ports 301 is 2, and the inner diameter of each discharge port 301 is 10 mm; the shaft shoulder of the stirring head 1 is tightly matched with the inner wall of the static shaft shoulder 3 at the bottom of the second accommodating cavity 302 through a bearing 2;
the material containing part 4 is a hollow cylindrical structure, and the inner diameter of the material containing part is 0.08mm larger than the diameter of the shaft shoulder of the stirring head 1; a feed inlet 401 is formed in the side wall, and the width of the feed inlet 401 is 0.08mm larger than the diameter of the shaft shoulder 102 of the stirring head; the distance between the top of the feed port 401 and the top of the material accommodating part 4 is more than half of the height of the feed port 401;
the pushing assembly 6 consists of a cam 602 and a pushing rod 601, the pushing rod 601 consists of a material receiving end and a connecting end, the diameter of the extruding end is 0.05mm smaller than the inner diameter of the material accommodating part 4, and the connecting end is provided with a roller; when the cam 602 has the lowest point, the upper end surface of the material receiving end of the material pushing rod 601 is flush with the bottom of the feed port 401 of the material accommodating part 4, and when the cam 602 has the highest point, the upper end surface of the material receiving end of the material pushing rod 601 is 2-5 mm away from the lower end surface of the stirring pin 101; the cam mounting seat 5 is rectangular in shape, and is provided with a third accommodating cavity 501 with a cylindrical through hole structure, and the radius of the cylindrical through hole is 1.5mm larger than the maximum stroke of the cam 602; a round hole vertical to the third accommodating cavity, namely a material pushing rod through hole 502 is machined in the upper part of the mounting seat, and the diameter of the material pushing rod through hole 502 is the same as the aperture of the material accommodating part 4;
the conveyor belt 7 is driven by a belt wheel or a gear, and the upper end surface of the conveyor belt 7 is flush with the bottom of the feed port 401 of the material accommodating part 4; the carbon material container 8 is conical and is placed above the conveyor belt 7.
Example 2
A tin-based composite solder friction stir processing preparation device comprises a stirring head 1, a static shaft shoulder 3, a material accommodating part 4, a conveyor belt 7, a carbon material accommodating device 8 and an oil hydraulic cylinder assembly 9; the oil hydraulic cylinder assembly 9 comprises a cylinder body 901 and an oil hydraulic cylinder rod 902, wherein the oil hydraulic cylinder rod 902 is provided with a material receiving end same as that of the embodiment 1; the material is pushed and extruded by the reciprocating motion of the oil cylinder rod 902; in this embodiment, the connection arrangement of the other components is the same as that in embodiment 1 except that the material pushing device part adopts the oil hydraulic cylinder assembly 9.
Example 3
A preparation method of tin-based composite solder adopts the device in the embodiment 1 and comprises the following steps:
(1) and casting Sn-9Zn to form an ingot with the outer diameter phi of 50mm and the central through hole phi of 10mm, and turning the surface by 0.05mm to remove an oxide film.
(2) And transferring the cast ingot with the central through hole to the conveyor belt 7, wherein when the cast ingot passes below the carbon material accommodating device 8, the graphite powder in the carbon material accommodating device 8 is filled in the central through hole of the cast ingot under the action of self gravity.
(3) The cam 602 rotates until the pushing rod 601 is located at the lowest position, and the cast ingot filled with the graphite powder enters the material accommodating part 4 under the driving of the conveyor belt 7; the cam 602 continues to rotate, pushing the graphite powder filled ingot upward at a certain rate.
(4) The rotating stirring pin 101 contacts with the cast ingot filled with the graphite powder, intense friction occurs and the graphite powder is softened, the graphite powder is fully mixed with the plasticized Sn-9Zn brazing filler metal matrix under the action of the stirring pin 101, and flows to a gap between the stirring pin 101 and the static shaft shoulder 3 under the driving of the thread of the stirring pin 101, and finally flows out of a discharge hole on the static shaft shoulder 3, so that the required graphite reinforced Sn-9Zn composite brazing filler metal is obtained.
(5) The cam 602 rotates until the material pushing rod 601 is located at the highest position, friction extrusion is finished, the cam 602 continues to rotate, and the material pushing rod 601 is driven to move downwards until the lowest point is reached.
And (6) repeating the steps (2) to (5) to realize the continuous stirring, friction and extrusion processing of the graphite reinforced Sn-9Zn composite solder.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The preparation method of the tin-based composite solder is characterized by comprising the following steps of:
vertically placing a tin-based brazing filler metal matrix with a cylindrical structure, wherein a carbon material is filled in the tin-based brazing filler metal matrix; the stirring heads are oppositely arranged above the tin-based brazing filler metal matrix, rotate, meanwhile, the tin-based brazing filler metal matrix filled with the carbon material moves towards the stirring heads under the action of a pushing component, the stirring heads are in contact with the tin-based brazing filler metal matrix and continuously generate pressure and friction force, and the tin-based brazing filler metal matrix is plasticized and compounded with the carbon material.
2. A method of making a tin-based composite solder according to claim 1, wherein the tin-based solder matrix comprises Sn-9Zn solder;
preferably, the carbon material includes graphite, carbon fiber, and carbon black;
preferably, the particle size of the carbon material is 200-500 meshes;
the tin-based brazing filler metal matrix is cylindrical;
preferably, the outer diameter of the tin-based brazing filler metal matrix is 30-100 mm, and the diameter of a center hole of the tin-based brazing filler metal matrix is 3-10 mm.
3. The tin-based composite solder produced by the method for producing a tin-based composite solder according to claim 1 or 2.
4. The device adopted for implementing the preparation method of the tin-based composite solder in the claim 1 or 2 is characterized by comprising a friction stir component, a material accommodating component and a material pushing component; the lower end of the stirring friction component is connected with the material accommodating component, and the lower end of the material accommodating component is connected with the material pushing component;
a first accommodating cavity is formed in the material accommodating part, and a feeding hole is formed in the side wall of the material accommodating part;
the friction stir component comprises a static shaft shoulder, a bearing and a stirring head; a second accommodating cavity is formed in the static shaft shoulder, a rotary stirring cavity is formed in the side wall of the bottom end of the static shaft shoulder, and the rotary stirring cavity is communicated with the second accommodating cavity; the stirring head comprises a stirring needle, a stirring head shaft shoulder and a clamping end, the stirring head is connected with the static shaft shoulder through the bearing, the stirring needle extends downwards along the rotary stirring cavity until part of the stirring needle extends into the first accommodating cavity; a discharge hole is formed in the side wall of the bottom end of the static shaft shoulder and communicated with the rotary stirring cavity;
the pushing component comprises a pushing assembly, the pushing assembly comprises a pushing rod and a driving piece, and a material receiving end is arranged at the top end of the pushing rod; the material pushing rod reciprocates up and down in the first accommodating cavity under the action of the driving piece.
5. The device as claimed in claim 4, wherein the pushing member further comprises a mounting seat, a third receiving cavity is formed in the mounting seat, a pushing rod through hole for guiding is formed in the upper end of the third receiving cavity, the pushing rod through hole is communicated with the first receiving cavity, and the driving member is located in the third receiving cavity.
6. The apparatus of claim 5, wherein the pusher assembly comprises a cam-ram assembly, a crank-link assembly, or an oil hydraulic cylinder assembly;
preferably, the lowest point of the reciprocating motion of the pushing assembly is: the upper end surface of the material carrying end is level with the bottom of the feed inlet of the material accommodating part; the highest point of the reciprocating motion of the pushing assembly is as follows: the distance between the upper end face of the material receiving end and the lower end face of the stirring needle is 2-5 mm.
7. The apparatus of claim 6, wherein the mount is rectangular in shape;
preferably, the material receiving end is a cylinder, and the diameter of the material receiving end is 0.02-0.1 mm smaller than the inner diameter of the material accommodating part.
8. The apparatus of claim 5, wherein the material containment member is a hollow cylindrical structure;
preferably, the inner diameter of the material accommodating part is equal to that of the through hole of the material pushing rod;
preferably, the inner diameter of the material accommodating part is 0.02-0.1 mm larger than the diameter of the shaft shoulder of the stirring head;
preferably, the width of the feed inlet is 0.02-0.1 mm larger than the diameter of the shaft shoulder of the stirring head.
9. The apparatus of claim 4, wherein the stirring head is of an axisymmetric configuration;
preferably, the stirring pin is conical, and the cone angle of the stirring pin is 10-30 degrees; the surface of the stirring pin is provided with threads;
preferably, the static shaft shoulder is of an axisymmetric structure, and the static shaft shoulder is cylindrical in shape;
preferably, the second accommodating cavity is cylindrical;
preferably, the rotary stirring cavity is conical, and the cone angle of the rotary stirring cavity is 8-25 degrees;
preferably, the cone angle of the rotary stirring cavity is smaller than that of the stirring pin;
preferably, the number of the discharge ports is 1-6, and the inner diameter of each discharge port is 5-15 mm;
preferably, the height of the feed port is 1-2 mm greater than that of the tin-based solder substrate;
the diameter of the end face of the bottom end of the stirring pin is 1-5 mm larger than the diameter of the center hole of the tin-based brazing filler metal matrix.
10. The apparatus of claim 4, further comprising a material transfer member; the material conveying part is arranged opposite to the feeding hole;
preferably, the material conveying part comprises a conveying belt and a carbon material accommodating device; the carbon material accommodating device is arranged above the conveying belt;
preferably, the discharge port is further connected with a pipe extrusion component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210215276.6A CN114523230B (en) | 2022-03-07 | Preparation method and device of tin-based composite solder and tin-based composite solder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210215276.6A CN114523230B (en) | 2022-03-07 | Preparation method and device of tin-based composite solder and tin-based composite solder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114523230A true CN114523230A (en) | 2022-05-24 |
| CN114523230B CN114523230B (en) | 2024-04-26 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001239397A (en) * | 2000-02-25 | 2001-09-04 | Tanaka Electronics Ind Co Ltd | Method of manufacturing compound solder material |
| JP2002301567A (en) * | 2001-04-03 | 2002-10-15 | Dai Ichi High Frequency Co Ltd | Method for producing complexed cylindrical or columnar body |
| JP2011025297A (en) * | 2009-07-28 | 2011-02-10 | Sumitomo Electric Ind Ltd | Method for producing composite material and composite material |
| CN102513720A (en) * | 2011-12-23 | 2012-06-27 | 哈尔滨工业大学深圳研究生院 | High-performance tin-based solder alloy and preparation method thereof |
| CN113579461A (en) * | 2021-08-24 | 2021-11-02 | 北京工业大学 | Graphene-aluminum composite material preparation stirring head based on novel hydraulic technology |
| CN113732567A (en) * | 2021-09-15 | 2021-12-03 | 中机智能装备创新研究院(宁波)有限公司 | Composite brazing filler metal friction extrusion preparation device and preparation method |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001239397A (en) * | 2000-02-25 | 2001-09-04 | Tanaka Electronics Ind Co Ltd | Method of manufacturing compound solder material |
| JP2002301567A (en) * | 2001-04-03 | 2002-10-15 | Dai Ichi High Frequency Co Ltd | Method for producing complexed cylindrical or columnar body |
| JP2011025297A (en) * | 2009-07-28 | 2011-02-10 | Sumitomo Electric Ind Ltd | Method for producing composite material and composite material |
| CN102513720A (en) * | 2011-12-23 | 2012-06-27 | 哈尔滨工业大学深圳研究生院 | High-performance tin-based solder alloy and preparation method thereof |
| CN113579461A (en) * | 2021-08-24 | 2021-11-02 | 北京工业大学 | Graphene-aluminum composite material preparation stirring head based on novel hydraulic technology |
| CN113732567A (en) * | 2021-09-15 | 2021-12-03 | 中机智能装备创新研究院(宁波)有限公司 | Composite brazing filler metal friction extrusion preparation device and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5516420B2 (en) | Saw wire and method for manufacturing saw wire | |
| CN100377821C (en) | Tip of soldering iron, process for producing the same, and electrical soldering iron and electrical solder sucking iron including the iron tip | |
| US9205578B2 (en) | Fabrication tools for exerting normal forces on feedstock | |
| US7045050B2 (en) | Method for producing electroconductive particles | |
| CN1157273C (en) | Flux and hard lead welding difficult wetted metal material | |
| US10384314B2 (en) | Metal particle and method for producing the same, covered metal particle, and metal powder | |
| CN102350585A (en) | Method for improving mechanical property of aluminum alloy friction stir connection region | |
| CN102317031A (en) | Metal filler, low-temperature-bonding lead-free solder and bonded structure | |
| CN114523230B (en) | Preparation method and device of tin-based composite solder and tin-based composite solder | |
| CN112530724B (en) | Method for manufacturing electron beam welding copper-tungsten contact by using tungsten powder | |
| CN114523230A (en) | Preparation method and device of tin-based composite solder and tin-based composite solder | |
| CN219053216U (en) | Friction stir additive manufacturing processing head and system for coaxial powder feeding | |
| CN113909483B (en) | Preparation method and preparation device of spherical silver-copper-titanium active solder powder | |
| CN111872378B (en) | Core-shell structure powder preparation device and method | |
| CN113732567B (en) | Composite brazing filler metal friction extrusion preparation device and preparation method | |
| CN108971803B (en) | Composite reinforced solder and preparation method thereof | |
| KR101248128B1 (en) | Handling device and the installation structure for cemented carbides | |
| CN101758341A (en) | Micro welding rod preparation device | |
| CN113894381A (en) | Automatic tin soldering processing technology | |
| CN108103497B (en) | Method for preparing low-temperature welding titanium carbide coating | |
| Hu et al. | Reinforced solder joint performance by incorporation of ZrO2 nanoparticles in electroless Ni–P composite layer | |
| CN114986092B (en) | Preparation method of multi-layer material stirring head with microstructure array | |
| CN220028674U (en) | Metal particle preparation facilities | |
| CN111996413B (en) | Preparation method of lead-tin-based solder alloy and prepared solder alloy | |
| CN108115308A (en) | A kind of Al18B4O33Silver-bearing copper composite soldering of whisker reinforcement and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 315700 no.929 Binhai Avenue, Danxi street, Xiangshan County, Ningbo City, Zhejiang Province (main building) 2002 Applicant after: Ningbo Intelligent Machine Tool Research Institute Co., Ltd. of China National Machinery Institute Group Address before: 315700 no.929 Binhai Avenue, Danxi street, Xiangshan County, Ningbo City, Zhejiang Province (main building) 2002 Applicant before: China Machinery Intelligent Equipment Innovation Research Institute (Ningbo) Co.,Ltd. |
|
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Deng Jianfeng Inventor after: Li Aiguo Inventor after: Wang Bo Inventor after: Hao Qingle Inventor after: Zhang Lei Inventor after: Long Weimin Inventor after: Fei Wenpan Inventor after: Wang Shengxi Inventor after: Cheng Zhan Inventor before: Deng Jianfeng Inventor before: Wang Bo Inventor before: Hao Qingle Inventor before: Zhang Lei Inventor before: Fei Wenpan Inventor before: Wang Shengxi Inventor before: Cheng Zhan |
|
| GR01 | Patent grant |