CN112958747A - Phosphorus copper ball extrusion forming process and extrusion die thereof - Google Patents
Phosphorus copper ball extrusion forming process and extrusion die thereof Download PDFInfo
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- CN112958747A CN112958747A CN202110139759.8A CN202110139759A CN112958747A CN 112958747 A CN112958747 A CN 112958747A CN 202110139759 A CN202110139759 A CN 202110139759A CN 112958747 A CN112958747 A CN 112958747A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
- B22D27/11—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of mechanical pressing devices
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- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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Abstract
The invention discloses a phosphor copper ball extrusion forming process and an extrusion die thereof, and the process comprises the following steps: A. selecting materials: selecting a pure copper block with the copper content of 99.90-99.98%, selecting a phosphorus-copper master alloy with the phosphorus content of 12-16%, and then mixing the pure copper block with the phosphorus master alloy according to the metal-auxiliary agent ratio of 100: 1, accurately weighing the metal additive, the chemical additive and the defoaming agent in advance by using an electronic scale. According to the invention, through the matching of the raw materials of the pure copper block, the phosphorus-copper master alloy, the metal auxiliary agent, the chemical auxiliary agent and the defoaming agent, the high-quality raw material is selected, the forming quality of the phosphorus-copper ball is improved, micro bubbles in the phosphorus-copper ball metal are eliminated, the compactness of the metal structure in the phosphorus-copper ball is enhanced, and through the matching of the technological processes of material selection, raw material melting, preparation of phosphorus-copper ball segment blocks, extrusion molding of an upper die and a lower die, polishing and deburring, cleaning and drying, and packaging and offline, the phosphorus-copper ball product with a more compact internal structure can be prepared.
Description
Technical Field
The invention relates to the technical field of phosphorus copper ball extrusion molding, in particular to a phosphorus copper ball extrusion molding process and an extrusion die thereof.
Background
Printed circuit boards, also known as printed circuit boards, are providers of electrical connections for electronic components, and can be classified into single-sided boards, double-sided boards, four-sided boards, six-sided boards, and other multi-layer boards according to the number of layers of the boards.
With the increasing development of the existing semiconductor and chip technology, the usage rate of the phosphor copper balls is more and more extensive, however, most of the phosphor copper balls are directly extruded in the extrusion forming process, equidistant segmented small phosphor copper balls are not prepared in advance, and are affected by stress, so that the distortion deformation in the extrusion forming process of the phosphor copper balls is easily caused, the forming quality of the phosphor copper balls is affected, the structural stability of the phosphor copper ball forming is reduced, an extrusion die is required in the extrusion forming process of the phosphor copper balls, the elastic damping offset can not be carried out on the collision stress generated between an upper die and a lower die in the extrusion process of the existing extrusion die, the upper die and the lower die are easily subjected to dislocation offset due to the collision stress, the tolerance error of the phosphor copper balls formed by the upper die and the lower die is larger, and the forming defective rate.
Therefore, it is necessary to design a phosphor-copper ball extrusion molding process and an extrusion mold thereof to solve the above problems.
Disclosure of Invention
The invention aims to provide a phosphorus copper ball extrusion forming process and an extrusion die thereof, and aims to solve the problems that most of phosphorus copper balls provided in the background art are directly extruded in the extrusion forming process, equidistant phosphorus copper ball segmented small blocks are not prepared in advance, the phosphorus copper balls are influenced by stress, the phosphorus copper balls are easily distorted and deformed in the extrusion forming process, the structural stability of the phosphorus copper ball forming is reduced, and the existing extrusion die cannot elastically absorb and offset the collision stress generated between an upper die and a lower die in the extrusion process.
In order to achieve the purpose, the invention provides the following technical scheme: a phosphor copper ball extrusion forming process and an extrusion die thereof comprise the following raw materials:
pure copper blocks, phosphorus-copper master alloy, metal additives, chemical additives and defoaming agents;
and the process steps are as follows:
A. selecting materials: selecting a pure copper block with the copper content of 99.90-99.98%, selecting a phosphorus-copper master alloy with the phosphorus content of 12-16%, and then mixing the pure copper block with the phosphorus master alloy according to the metal-auxiliary agent ratio of 100: 1, accurately weighing the metal additive, the chemical additive and the defoaming agent in advance by using an electronic scale;
B. burning and melting raw materials: the user puts the selected pure copper blocks and the phosphorus-copper master alloy into a smelting furnace for burning and melting, the temperature setting range of the smelting furnace is between 1000 and 2000 ℃, the burning and melting time range is between 1 and 3 hours according to the actual weight of the metal, and the pure copper blocks and the phosphorus-copper master alloy solution are prepared;
C. preparing a phosphor copper ball segment block: then, injecting the prepared pure copper block and the phosphorus-copper master alloy solution into a massive mold by a user, and preparing a semi-solidified monolithic phosphorus-copper ball segmented block after physical cooling;
D. extrusion molding by an upper die and a lower die: then, the user puts the segmental blocks of the semi-solidified phosphorus copper balls into an upper die and a lower die for extrusion forming, and takes out the upper die and the lower die after the segmental blocks of the semi-solidified phosphorus copper balls are subjected to refrigeration forming to obtain semi-finished phosphorus copper balls;
E. polishing and deburring: a user uses a grinding machine to grind redundant metal blocks on the surface of the prepared semi-finished phosphorus copper ball, and after grinding is finished, the user uses the grinding machine to perform polishing operation on the semi-finished phosphorus copper ball to prepare a finished phosphorus copper ball;
F. cleaning and drying: the user puts the finished product of the polished phosphor-copper ball into a cleaning machine for cleaning, and during the cleaning, the user adds a metal cleaning agent into the cleaning machine for auxiliary cleaning, and then puts the cleaned finished product of the phosphor-copper ball into a drying box for drying treatment;
G. packaging and feeding: and the user carries out instrument inspection on the finished phosphorus copper ball product after cleaning and drying, and then the phosphorus copper ball product is packaged by a packaging machine after the finished phosphorus copper ball product is qualified. And after the packaging machine finishes packaging the finished phosphorus copper ball, evacuating the air in the package by using a vacuum machine to enable the finished phosphorus copper ball to be packaged into a vacuum flat shape, and then transporting the packaged finished phosphorus copper ball to be off-line and storing the finished phosphorus copper ball in a warehouse.
Preferably, in the raw material burning process, the pure copper blocks and the phosphorus-copper master alloy are put into a melting furnace and then burned in three stages, the temperature of the melting furnace is adjusted to 1200 ℃ in advance, the pure copper blocks and the phosphorus-copper master alloy are fired for 30min to 45min, then the temperature of the melting furnace is adjusted to 1500 ℃, the pure copper blocks and the phosphorus-copper master alloy are fired for 60min to 100min, finally the temperature of the melting furnace is adjusted to 1600 ℃ to 2000 ℃, and the pure copper blocks and the phosphorus-copper master alloy are fired for 100min to 180 min.
Preferably, after the semi-solidified monolithic phosphor copper ball segmented block is manufactured in the process of manufacturing the phosphor copper ball segmented block, a user quickly uses a cutting machine to equally divide the monolithic phosphor copper ball segmented block into semi-solidified phosphor copper ball segmented small blocks with the same area and size, and the room temperature is kept between 24 and 26 ℃ during the cutting process.
Preferably, in the cleaning and drying process, the drying temperature range of the drying box is between 120 ℃ and 200 ℃, and the drying time range of the drying box is between 20 min and 45 min.
Preferably, an extrusion die of phosphorus copper ball extrusion technology, including last mould and bed die, go up all bolted connections all around in mould and the bed die outside and have the handle, the surface of handle is from last to bolted connection limit ring down in proper order, the antiskid line of hemp has been seted up on the surface of handle, the both sides of going up mould and bed die are all bolted connection to have the fixing base, go up mould and bed die in opposite directions all seted up the extrusion die cavity all around, it all is provided with shock attenuation seal structure all around in opposite directions to go up mould and bed die, it is provided with auxiliary positioning mechanism to go up mould and bed die one side in opposite directions.
Preferably, the shock attenuation seal structure includes spout, slider, elastic ring, damping spring, sealing strip, sealed blend stop groove, sealed recess and sealed blend stop, the spout has all been seted up around going up the mould bottom, the equal sliding connection in both sides of spout inner chamber has the slider, one side bolt joint that the spout was kept away from to the slider has the elastic ring, the sealing strip has been bolted joint to the bottom of elastic ring, damping spring has all been bolted joint to sealing strip and last mould both sides in opposite directions, go up the mould bottom all seted up sealed blend stop groove all around, all seted up all around at bed die top with sealing strip joint complex sealed recess, all integrated into one piece all around at bed die top have with sealed blend stop groove joint complex sealed blend stop.
Preferably, the auxiliary positioning mechanism includes sliding sleeve, traveller, buffer spring, locating hole, supporting spring, slide and location projection, the central department of fixing base inner chamber inlays and is equipped with the sliding sleeve, the inner chamber sliding connection of sliding sleeve has the traveller, the outside bolt of traveller has the spacing dish, the central department cover of traveller is equipped with buffer spring, buffer spring's the outside and the inboard bolt of sliding sleeve, the locating hole has all been seted up all around to bed die top center department, the vertical bolt in bottom of locating hole inner chamber has supporting spring, supporting spring's top bolt has the slide, go up all integrated into one piece all around of mould bottom center department have with locating hole and slide cooperation location projection that uses.
Preferably, the fixing seat is distributed along the center of the upper die and the center of the lower die in a diagonal state, and the extrusion die cavities are distributed along the centers of the upper die and the lower die in an equidistant array.
Compared with the prior art, the invention has the beneficial effects that:
1. the extrusion forming process and the extrusion die thereof select high-quality raw materials through the raw material matching of a pure copper block, a phosphorus copper master alloy, a metal auxiliary agent, a chemical auxiliary agent and a defoaming agent, improve the forming quality of the phosphorus copper ball, eliminate micro bubbles in the phosphorus copper ball metal, enhance the compactness of the metal structure in the phosphorus copper ball, can prepare a phosphorus copper ball product with a more compact internal structure through the process flow matching of material selection, raw material burning, preparation of phosphorus copper ball segmentation blocks, extrusion forming of an upper die and a lower die, polishing and deburring, cleaning and drying, and packaging and offline, improve the extrusion forming quality of the phosphorus copper ball product, improve the qualification rate of the phosphorus copper ball product, and can carry out tight sealing treatment on the periphery of the upper die and the lower die through the matching of a chute, a slide block, an elastic ring, a damping spring, a sealing strip and a sealing groove to avoid the leakage of gas and raw material liquid between the upper die and the lower die, through the cooperation in sealed blend stop and sealed blend stop groove, to supplementary keeping out between last mould and the bed die sealed, further strengthen the extrusion effect of extrusion die cavity phosphorus copper ball, through the sliding sleeve, traveller and buffer spring's cooperation, can carry out diagonal angle steady processing to last mould and bed die extrusion in-process, avoid going up mould and bed die extrusion in-process and appearing the dislocation, through the locating hole, supporting spring, the cooperation of slide and location projection, can go up mould and bed die center department and carry out assistance-localization real-time all around, further improve the coincide nature between last mould and the bed die.
2. The extrusion forming process of the phosphor-copper ball and the extrusion die thereof are characterized in that pure copper blocks and phosphor-copper master alloy are put into a melting furnace and then are melted in a three-section mode, the pure copper blocks and the phosphorus copper master alloy can be pre-melted, the metal molecular structures in the pure copper blocks and the phosphorus copper master alloy are fractured, the fusion effect between the pure copper blocks and the phosphorus copper master alloy is enhanced, the pure copper blocks and the phosphorus copper master alloy are more fully and thoroughly melted, the sectional small blocks of the semi-solidified phosphorus copper balls with the same area are convenient for a user to carry out extrusion forming on the sectional small blocks of the phosphorus copper balls, the internal stress of the sectional small blocks of the phosphorus copper balls is eliminated, the extrusion forming quality of the phosphorus copper balls is improved, the drying temperature range of the drying box is between 120-200 ℃ and the drying time range of the drying box is between 20-45min, the water on the surface of the phosphor copper ball can be fully removed, and the water content of the phosphor copper ball is ensured to reach the qualified standard.
3. The phosphor copper ball extrusion forming process and the extrusion die thereof are distributed in a diagonal state along the center of the upper die and the center of the lower die through the fixing seat, can symmetrically slide and support the upper die and the lower die, prevent the extrusion stress of the upper die and the lower die from displacement, improve the degree of engagement between the upper die and the lower die, are distributed in an equidistant array shape along the centers of the upper die and the lower die through the extrusion die cavity, can synchronously carry out extrusion forming on a plurality of phosphor copper ball semi-finished products, and improve the forming efficiency of the phosphor copper balls.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a front view of the upper and lower dies of the invention;
FIG. 3 is a top view of the upper mold structure of the present invention;
FIG. 4 is a bottom view of the structure of the lower mold of the present invention;
FIG. 5 is a cross-sectional view of the positioning hole structure of the present invention.
In the figure: 1. an upper die; 2. a lower die; 3. a handle; 4. a fixed seat; 5. extruding the die cavity; 6. a damping sealing structure; 61. a chute; 62. a slider; 63. an elastic ring; 64. a damping spring; 65. a sealing strip; 66. sealing the barrier strip groove; 67. sealing the groove; 68. sealing the barrier strip; 7. an auxiliary positioning mechanism; 71. a sliding sleeve; 72. a traveler; 73. a buffer spring; 74. positioning holes; 75. a support spring; 76. a slide base; 77. and positioning the convex column.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention is shown:
a phosphor copper ball extrusion forming process and an extrusion die thereof comprise the following raw materials:
pure copper blocks, phosphorus-copper master alloy, metal additives, chemical additives and defoaming agents;
and the process steps are as follows:
A. selecting materials: selecting a pure copper block with the copper content of 99.90-99.98%, selecting a phosphorus-copper master alloy with the phosphorus content of 12-16%, and then mixing the pure copper block with the phosphorus master alloy according to the metal-auxiliary agent ratio of 100: 1, accurately weighing the metal additive, the chemical additive and the defoaming agent in advance by using an electronic scale;
B. burning and melting raw materials: the user puts the selected pure copper blocks and the phosphorus-copper master alloy into a smelting furnace for burning and melting, the temperature setting range of the smelting furnace is between 1000 and 2000 ℃, the burning and melting time range is between 1 and 3 hours according to the actual weight of the metal, and the pure copper blocks and the phosphorus-copper master alloy solution are prepared;
C. preparing a phosphor copper ball segment block: then, injecting the prepared pure copper block and the phosphorus-copper master alloy solution into a massive mold by a user, and preparing a semi-solidified monolithic phosphorus-copper ball segmented block after physical cooling;
D. extrusion molding by an upper die and a lower die: then, the user puts the segmental blocks of the semi-solidified phosphorus copper balls into an upper die and a lower die for extrusion forming, and takes out the upper die and the lower die after the segmental blocks of the semi-solidified phosphorus copper balls are subjected to refrigeration forming to obtain semi-finished phosphorus copper balls;
E. polishing and deburring: a user uses a grinding machine to grind redundant metal blocks on the surface of the prepared semi-finished phosphorus copper ball, and after grinding is finished, the user uses the grinding machine to perform polishing operation on the semi-finished phosphorus copper ball to prepare a finished phosphorus copper ball;
F. cleaning and drying: the user puts the finished product of the polished phosphor-copper ball into a cleaning machine for cleaning, and during the cleaning, the user adds a metal cleaning agent into the cleaning machine for auxiliary cleaning, and then puts the cleaned finished product of the phosphor-copper ball into a drying box for drying treatment;
G. packaging and feeding: and the user carries out instrument inspection on the finished phosphorus copper ball product after cleaning and drying, and then the phosphorus copper ball product is packaged by a packaging machine after the finished phosphorus copper ball product is qualified. And after the packaging machine finishes packaging the finished phosphorus copper ball product, evacuating the air in the package by using a vacuum machine to enable the finished phosphorus copper ball product to be packaged into a vacuum flat shape, then transporting the packaged finished phosphorus copper ball product to be off-line, putting the finished phosphorus copper ball product into a warehouse for storage, selecting high-quality raw materials through the matching of the raw materials of a pure copper block, a phosphorus copper master alloy, a metal auxiliary agent, a chemical auxiliary agent and a defoaming agent, improving the forming quality of the phosphorus copper ball, eliminating micro bubbles in the phosphorus copper ball metal, enhancing the compactness of the metal structure in the phosphorus copper ball, preparing phosphorus copper ball segment blocks through material selection and raw material melting, performing extrusion forming by using upper and lower dies, polishing to remove burrs, cleaning, drying and packaging off-line, thus preparing the phosphorus copper ball product with a more compact internal structure, improving the extrusion forming quality of the phosphorus copper ball product and improving the qualification rate of the phosphorus copper ball product.
In the raw material burning process, the pure copper blocks and the phosphorus copper master alloy are put into a furnace and then burned in three stages, the temperature of the furnace is adjusted to 1200 ℃ in advance, the pure copper blocks and the phosphorus copper master alloy are burned for 30min-45min, then the temperature of the furnace is adjusted to 1500 ℃, the pure copper blocks and the phosphorus copper master alloy are burned for 60min-100min, finally the temperature of the furnace is adjusted to 1600 ℃ to 2000 ℃, the pure copper blocks and the phosphorus copper master alloy are burned for 100min-180min, the pure copper blocks and the phosphorus copper master alloy can be burned in advance, metal molecular structures in the pure copper blocks and the phosphorus copper master alloy are fractured, the fusion effect between the pure copper blocks and the phosphorus copper master alloy is enhanced, and the pure copper blocks and the phosphorus copper master alloy are burned more fully and thoroughly.
In the process of manufacturing the phosphorus copper ball segmented block, after the semi-solidified integral phosphorus copper ball segmented block is manufactured, a user quickly uses a cutting machine to equally divide the integral phosphorus copper ball segmented block into semi-solidified phosphorus copper ball segmented small blocks with the same area, and the room temperature is kept between 24 and 26 ℃ during cutting, so that the user can conveniently extrude the phosphorus copper ball segmented small blocks, the stress in the phosphorus copper ball segmented small blocks is eliminated, and the extrusion forming quality of the phosphorus copper ball is improved.
In the cleaning and drying process, the drying temperature range of the drying box is between 120-200 ℃, and the drying time range of the drying box is between 20-45min, so that the moisture on the surface of the phosphor-copper balls can be sufficiently removed, and the water content of the phosphor-copper balls can reach the qualified standard.
An extrusion die of a phosphor copper ball extrusion forming process comprises an upper die 1 and a lower die 2, handles 3 are bolted on the peripheries of the outer sides of the upper die 1 and the lower die 2, limiting rings are sequentially bolted on the surfaces of the handles 3 from top to bottom, anti-skid hemp threads are arranged on the surfaces of the handles 3, fixing seats 4 are bolted on two sides of the upper die 1 and the lower die 2, extrusion die cavities 5 are arranged on the opposite peripheries of the upper die 1 and the lower die 2, damping sealing structures 6 are arranged on the opposite peripheries of the upper die 1 and the lower die 2, an auxiliary positioning mechanism 7 is arranged on one opposite side of the upper die 1 and the lower die 2, the peripheries of the upper die 1 and the lower die 2 can be tightly sealed through matching of a chute 61, a sliding block 62, an elastic ring 63, a damping spring 64, a sealing strip 65 and a sealing groove 67, so that gas and raw material liquid between the upper die 1 and the lower die 2 are prevented from leaking, through the cooperation of sealed blend stop 68 and sealed blend stop groove 66, to supplementary keeping out between last mould 1 and the bed die 2 sealed, further strengthen the extrusion effect of the interior phosphorus copper ball of extrusion die cavity 5, through sliding sleeve 71, traveller 72 and buffer spring 73's cooperation, can carry out diagonal angle stationary processing to last mould 1 and bed die 2 extrusion in-process, avoid going up mould 1 and bed die 2 extrusion in-process and appearing the dislocation, through locating hole 74, supporting spring 75, the cooperation of slide 76 and location projection 77, can go up mould 1 and bed die 2 center department and carry out assistance-localization real-time all around, further improve the coincide nature between last mould 1 and the bed die 2.
The damping and sealing structure 6 comprises a sliding groove 61, a sliding block 62, an elastic ring 63, a damping spring 64, a sealing strip 65, a sealing strip groove 66, a sealing groove 67 and a sealing strip 68, wherein the sliding groove 61 is formed in the periphery of the bottom of the upper die 1, the sliding block 62 is connected to both sides of the inner cavity of the sliding groove 61 in a sliding manner, the elastic ring 63 is bolted to one side of the sliding block 62 away from the sliding groove 61, the sealing strip 65 is bolted to the bottom of the elastic ring 63, the damping spring 64 is bolted to both opposite sides of the sealing strip 65 and the upper die 1, the sealing strip groove 66 is formed in the periphery of the bottom of the upper die 1, the sealing groove 67 in clamping fit with the sealing strip 65 is formed in the periphery of the top of the lower die 2, the periphery of the upper die 1 and the periphery of the lower die 2 can be tightly sealed, leakage of gas and raw material liquid between the upper die 1 and the lower die 2 is avoided, the sealing strip groove 68 in clamping fit with the, and (3) performing auxiliary resisting and sealing between the upper die 1 and the lower die 2, and further enhancing the extrusion forming effect of the phosphor-copper balls in the extrusion die cavity 5.
The auxiliary positioning mechanism 7 comprises a sliding sleeve 71, a sliding column 72, a buffer spring 73, a positioning hole 74, a supporting spring 75, a sliding seat 76 and a positioning convex column 77, the sliding sleeve 71 is embedded in the center of the inner cavity of the fixed seat 4, the inner cavity of the sliding sleeve 71 is connected with the sliding column 72 in a sliding manner, the outer side of the sliding column 72 is bolted with a limiting disc, the center of the sliding column 72 is sleeved with the buffer spring 73, the outer side of the buffer spring 73 is bolted with the inner side of the sliding sleeve 71, diagonal stable treatment can be carried out in the extrusion process of the upper die 1 and the lower die 2, dislocation in the extrusion process of the upper die 1 and the lower die 2 is avoided, the positioning hole 74 is arranged around the center of the top of the lower die 2, the supporting spring 75 is vertically bolted at the bottom of the inner cavity of the positioning hole 74, the sliding seat 76 is bolted at the top of the supporting spring 75, the positioning convex column 77 matched, the periphery of the centers of the upper die 1 and the lower die 2 can be positioned in an auxiliary manner, and the inosculation between the upper die 1 and the lower die 2 is further improved.
The fixing base 4 is located to be diagonal state along the center of last mould 1 and bed die 2 and distributes, can carry out the symmetrical slip support to last mould 1 and bed die 2, prevent that mould 1 and bed die 2 extrusion atress from taking place the displacement, improve the degree of agreeing with between mould 1 and the bed die 2, extrusion die cavity 5 is the equidistance array form along the center of last mould 1 and bed die 2 and distributes, can carry out extrusion to a plurality of phosphorus copper ball semi-manufactured goods in step, improve the shaping efficiency of phosphorus copper ball.
The working principle is as follows: the user puts the semi-solidified phosphor copper ball segment small block between the upper die 1 and the lower die 2, then extrudes and attaches the upper die 1 and the lower die 2 through the external punching equipment, meanwhile, the upper die 1 drives the sealing strip 65 to be correspondingly clamped into the sealing groove 67 of the lower die 2 through the elastic ring 63, then the elastic ring 63 extrudes to generate deformation to drive the sliding block 62 to slide and extend outwards in the sliding groove 61, then the elastic ring 63 extrudes to be flat, the damping spring 64 performs auxiliary elastic clamping on two sides of the sealing strip 65, then the sealing blocking strip 68 is correspondingly clamped into the sealing blocking strip groove 66, namely, the upper die 1 and the lower die 2 can be sealed and matched, and the elastic ring 63 and the damping spring 64 counteract the collision stress generated in the collision extrusion process of the upper die 1 and the lower die 2, meanwhile, the upper die 1 and the lower die 2 drive the sliding sleeve 71 to slide inwards on the surface of the sliding column 72, the buffer spring 73 is used for performing auxiliary buffering treatment on the sliding sleeve 71, the positioning convex column 77 is correspondingly inserted into the positioning hole 74, the positioning convex column 77 drives the supporting spring 75 to compress through the sliding seat 76, and the sealing inosculation performance of the upper die 1 and the lower die 2 is further enhanced, so that the segmented small blocks of the semi-solidified phosphorus copper balls are manufactured into a plurality of semi-finished phosphorus copper ball products in the extrusion die cavity 5 under the extrusion pressure action of the upper die 1 and the lower die 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A phosphor copper ball extrusion forming process is characterized in that: comprises the following raw materials:
pure copper blocks, phosphorus-copper master alloy, metal additives, chemical additives and defoaming agents;
and the process steps are as follows:
A. selecting materials: selecting a pure copper block with the copper content of 99.90-99.98%, selecting a phosphorus-copper master alloy with the phosphorus content of 12-16%, and then mixing the pure copper block with the phosphorus master alloy according to the metal-auxiliary agent ratio of 100: 1, accurately weighing the metal additive, the chemical additive and the defoaming agent in advance by using an electronic scale;
B. burning and melting raw materials: the user puts the selected pure copper blocks and the phosphorus-copper master alloy into a smelting furnace for burning and melting, the temperature setting range of the smelting furnace is between 1000 and 2000 ℃, the burning and melting time range is between 1 and 3 hours according to the actual weight of the metal, and the pure copper blocks and the phosphorus-copper master alloy solution are prepared;
C. preparing a phosphor copper ball segment block: then, injecting the prepared pure copper block and the phosphorus-copper master alloy solution into a massive mold by a user, and preparing a semi-solidified monolithic phosphorus-copper ball segmented block after physical cooling;
D. extrusion molding by an upper die and a lower die: then, the user puts the segmental blocks of the semi-solidified phosphorus copper balls into an upper die and a lower die for extrusion forming, and takes out the upper die and the lower die after the segmental blocks of the semi-solidified phosphorus copper balls are subjected to refrigeration forming to obtain semi-finished phosphorus copper balls;
E. polishing and deburring: a user uses a grinding machine to grind redundant metal blocks on the surface of the prepared semi-finished phosphorus copper ball, and after grinding is finished, the user uses the grinding machine to perform polishing operation on the semi-finished phosphorus copper ball to prepare a finished phosphorus copper ball;
F. cleaning and drying: the user puts the finished product of the polished phosphor-copper ball into a cleaning machine for cleaning, and during the cleaning, the user adds a metal cleaning agent into the cleaning machine for auxiliary cleaning, and then puts the cleaned finished product of the phosphor-copper ball into a drying box for drying treatment;
G. packaging and feeding: and the user carries out instrument inspection on the finished phosphorus copper ball product after cleaning and drying, and then the phosphorus copper ball product is packaged by a packaging machine after the finished phosphorus copper ball product is qualified. And after the packaging machine finishes packaging the finished phosphorus copper ball, evacuating the air in the package by using a vacuum machine to enable the finished phosphorus copper ball to be packaged into a vacuum flat shape, and then transporting the packaged finished phosphorus copper ball to be off-line and storing the finished phosphorus copper ball in a warehouse.
2. The extrusion molding process of the phosphor-copper ball as claimed in claim 1, wherein: in the raw material burning process, the pure copper blocks and the phosphorus copper master alloy are put into a furnace and then burned in three stages, the temperature of the furnace is adjusted to 1200 ℃ in advance, the pure copper blocks and the phosphorus copper master alloy are burned for 30min-45min, then the temperature of the furnace is adjusted to 1500 ℃, the pure copper blocks and the phosphorus copper master alloy are burned for 60min-100min, finally the temperature of the furnace is adjusted to 1600 ℃ to 2000 ℃, and the pure copper blocks and the phosphorus copper master alloy are burned for 100min-180 min.
3. The extrusion molding process of the phosphor-copper ball as claimed in claim 1, wherein: in the process of manufacturing the phosphorus copper ball segmented block, after the semi-solidified monolithic phosphorus copper ball segmented block is manufactured, a user quickly uses a cutting machine to equally divide the monolithic phosphorus copper ball segmented block into semi-solidified phosphorus copper ball segmented small blocks with the same area and size, and the room temperature is kept between 24 and 26 ℃ during cutting.
4. The extrusion molding process of the phosphor-copper ball as claimed in claim 1, wherein: in the cleaning and drying process, the drying temperature range of the drying box is between 120 ℃ and 200 ℃, and the drying time range of the drying box is between 20-45 min.
5. The extrusion die of the extrusion forming process of the phosphor-copper ball as claimed in claim 1, comprising an upper die (1) and a lower die (2), wherein: go up all bolted connections all around in the mould (1) and bed die (2) outside and have handle (3), the surface of handle (3) is from last to down bolted connection in proper order has the spacing ring, anti-skidding twist grain has been seted up on the surface of handle (3), the both sides of going up mould (1) and bed die (2) are all bolted connection has fixing base (4), go up mould (1) and bed die (2) in opposite directions and all seted up extrusion die cavity (5) all around, upward all be provided with shock attenuation seal structure (6) around mould (1) and bed die (2) are opposite, it is provided with auxiliary positioning mechanism (7) to go up mould (1) and bed die (2) one side in opposite directions.
6. The extrusion die of the extrusion forming process of the phosphor-copper ball as claimed in claim 5, wherein: the damping sealing structure (6) comprises a sliding groove (61), a sliding block (62), an elastic ring (63), a damping spring (64), a sealing strip (65), a sealing strip groove (66), a sealing groove (67) and a sealing strip (68), wherein the sliding groove (61) is formed in the periphery of the bottom of the upper die (1), the sliding block (62) is connected to the two sides of the inner cavity of the sliding groove (61) in a sliding mode, the elastic ring (63) is bolted to one side, away from the sliding groove (61), of the sliding block (62), the sealing strip (65) is bolted to the bottom of the elastic ring (63), the damping spring (64) is bolted to the two opposite sides of the sealing strip (65) and the upper die (1), the sealing strip groove (66) is formed in the periphery of the bottom of the upper die (1), the sealing groove (67) matched with the sealing strip (65) in a clamping mode is formed in the periphery of the top of the lower die, the periphery of the top of the lower die (2) is integrally formed with a sealing barrier strip (68) which is in clamping fit with the sealing barrier strip groove (66).
7. The extrusion die of the extrusion forming process of the phosphor-copper ball as claimed in claim 5, wherein: auxiliary positioning mechanism (7) are including sliding sleeve (71), traveller (72), buffer spring (73), locating hole (74), supporting spring (75), slide (76) and location convex column (77), the center department of fixing base (4) inner chamber inlays and is equipped with sliding sleeve (71), the inner chamber sliding connection of sliding sleeve (71) has traveller (72), the outside bolt of traveller (72) has the spacing dish, the center department cover of traveller (72) is equipped with buffer spring (73), the outside of buffer spring (73) and the inboard bolt of sliding sleeve (71), locating hole (74) have all been seted up all around of lower mould (2) top center department, the vertical bolt in bottom of locating hole (74) inner chamber has supporting spring (75), the top bolt of supporting spring (75) has slide (76), go up all around equal integrated into one piece of mould (1) bottom center department have with locating hole (74) and slide (76) cooperation location convex column (77) use ).
8. The extrusion die of the extrusion forming process of the phosphor-copper ball as claimed in claim 5, wherein: the fixing seat (4) is distributed in a diagonal state along the center of the upper die (1) and the center of the lower die (2), and the extrusion die cavity (5) is distributed in an equidistant array shape along the center of the upper die (1) and the center of the lower die (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110139759.8A CN112958747A (en) | 2021-02-01 | 2021-02-01 | Phosphorus copper ball extrusion forming process and extrusion die thereof |
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| CN202110139759.8A CN112958747A (en) | 2021-02-01 | 2021-02-01 | Phosphorus copper ball extrusion forming process and extrusion die thereof |
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Application publication date: 20210615 |