CN112775425A - Mold for processing and forming antimony alloy evaporation source material and using method - Google Patents
Mold for processing and forming antimony alloy evaporation source material and using method Download PDFInfo
- Publication number
- CN112775425A CN112775425A CN202011497066.8A CN202011497066A CN112775425A CN 112775425 A CN112775425 A CN 112775425A CN 202011497066 A CN202011497066 A CN 202011497066A CN 112775425 A CN112775425 A CN 112775425A
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- punch
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- powder
- forming
- antimony alloy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
Abstract
The invention discloses a die for processing and forming an antimony alloy evaporation source material and a using method thereof, belonging to the field of material processing and forming. The mold comprises a bottom mold and an upper mold. The upper die is divided into a punch guide positioning block and a punch; the bottom die consists of an upper bottom die and a lower bottom die which are identical in shape and size, four feed inlets which are identical in shape and size are arranged at the upper end of the bottom die at equal intervals from the position of a central line, and a punch guide hole and a positioning block are arranged in the punch positioning guide in the upper die. When the die is used, the lower bottom die is positioned by the positioning pin and then fastened and assembled together by the bolts; then adding powder into each feed inlet, placing a positioning block on a punch guide positioning block into each feed inlet, then placing the punch into a guide hole, and pressing the punch to form; and finally, detaching the bolts, separating the two bottom dies, and taking out the molded sample. The invention can realize the molding processing of 0.04-0.06 g of antimony alloy powder, has accurate size and molding quality which can meet the use requirement of the antimony alloy evaporation boat.
Description
Technical Field
The invention belongs to the field of material processing and forming, and provides a die for processing and forming an antimony alloy evaporation source material and a forming method for processing the antimony alloy evaporation source material by using the die.
Background
The low-light night vision technology is characterized in that an electric signal excited by a weak light source is amplified by a low-light image intensifier in a mode of amplifying a weak light signal to finally form an image visible to naked eyes, so that environment observation at night or under the condition of weak light signals is realized. The low-light night vision technology plays a very important role in all-weather observation, aiming, distance measurement, tracking, alarming and other military fields, and is mainly used for natural disaster detection, geographical mapping and the like in the civil field, so the low-light night vision technology becomes an indispensable technology in the military war and life at present. The antimony alkali photocathode adopted by the super-second generation image intensifier is a core component for realizing photoelectric conversion of a weak light source. The types and the performances of antimony alkali photocathode materials directly influence the quantum efficiency, the sensitivity, the cut-off wavelength and other performances of a photocathode film layer, and the currently adopted photocathode preparation process mainly adopts evaporation, so the types, the performances and the forming quality of evaporation materials all have impressions on the cathode film layer. At present, pure antimony is used abroad as an evaporation material of a photocathode for a low-light-level night vision system, but antimony has low melting point and high brittleness, is difficult to form by a common processing method, and brings great difficulty to practical application. Powder metallurgy is a method which has attracted attention in recent years for material processing. If the method is proper, a near-net-shape product can be manufactured by adopting a powder metallurgy method, so that the consumption of raw materials is reduced, the cost is reduced, and the method has great practical significance for processing and forming special materials.
The mould and the forming method for processing and forming the antimony alloy evaporation source material can realize the forming and processing of the antimony alloy material so as to meet the forming requirement of the existing low-light-level night vision technology on the evaporation source material.
Disclosure of Invention
The invention aims to research a die and a forming method for processing and forming an antimony alloy evaporation source material so as to prepare an antimony alloy evaporation source material forming sample which can meet the requirements of modern low-light-level detection technology.
In order to achieve the purpose, the invention provides a die for processing and forming an antimony alloy evaporation source material, which is characterized by comprising a bottom die, four feed inlets, a punch guide positioning block and a punch, wherein the four feed inlets are equidistantly arranged on the central line of the upper end surface of the bottom die;
the bottom die consists of 2 upper bottom dies and lower bottom dies which are completely identical in shape and size design, positioning pins and fastening bolts;
when the combined type die is used, the upper bottom die and the lower bottom die are positioned through the positioning pins and then fastened and assembled together through the fastening bolts; then adding powder into each feed inlet, placing a punch positioning block into one of the feed inlets, placing a punch into a guide hole, and sequentially pressing the punches into the four feed inlets; finally, compaction forming is carried out by applying certain pressure to the punch.
Further, the upper portion of feed inlet is the cylindric hole of diameter 6mm, and the middle part is round platform form hole, and the part that is located the bottom is sample shaping position, and the diameter is 2mm, and its inner surface roughness is R0.8.
Further, the punch surface was polished to R0.8.
Further, the upper and lower bottom dies were each made using SKD11, and the inner and outer surfaces thereof were polished to R0.8.
The invention also provides a forming method of the die for processing and forming the antimony alloy evaporation source material, which comprises the following steps:
step 1) metal powder: the purity of the antimony alloy evaporation source powder is 99.99 percent, and the mesh number is 200 meshes;
step 2) powder filling: respectively filling four parts of weighed antimony alloy powder into four feed inlets in the assembled bottom die;
step 3) pressing: after powder is filled, firstly putting a positioning block in a punch guide positioning block into one of the feed inlets, simultaneously putting a punch into a guide hole for prepressing, after the powder is compacted, applying 3-7 MPa of pressure to the punch (8) on a press machine, and finally pressing and forming the powder;
step 4), demolding: after the pressing forming, the fastening bolts and the positioning pins are dismounted, the upper bottom die and the lower bottom die are separated, and then the four formed samples can be taken out.
Further, the weight of the antimony alloy powder in the step 2) is 0.04-0.06 g; step 3), the prepressing time is 5-10 minutes; the pressure applied by the punch is 3-7 MPa.
The invention provides a mould and a forming method for processing and forming an antimony alloy evaporation source material, which have the outstanding advantages that: the forming processing of 0.04-0.06 g of antimony alloy powder can be realized, the size is accurate, and the forming quality can meet the forming requirement of a low-light-level night vision technology on an evaporation source material; the loss of raw materials and subsequent machining treatment can be reduced; the process flow is simple, the operation is convenient, the time and the labor are saved, and the preparation period is short.
Drawings
FIG. 1 is a schematic cross-sectional view of a mold according to the present invention.
FIG. 2 is a top view and a cross-sectional view of a punch guide positioning block according to the present invention.
Fig. 3 is a schematic view of the structure of the punch in the present invention.
FIG. 4 is a schematic diagram of the formation of an antimony alloy evaporation source material according to the present invention.
In the figure: 1. the device comprises a bottom die, 2 fastening bolts, 3 positioning pins, 4 feed inlets, 5 punch guide positioning blocks, 6 positioning blocks, 7 guide holes and 8 punches.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1-3, the present invention provides a mold for processing and molding an antimony alloy evaporation source material, the mold comprises a bottom mold 1, four charging holes 4 equidistantly arranged on the central line of the upper end surface of the bottom mold 1, a punch guide positioning block 5 and a punch 8, wherein the shape and size of the punch 8 are matched with those of the feeding hole 4;
the bottom die 1 consists of 2 upper bottom dies with completely identical shape and size designs, a lower bottom die, a positioning pin 3 and a fastening bolt 2, the upper bottom die and the lower bottom die are both made of SKD11, the contact surfaces of the upper bottom die and the lower bottom die are polished to R0.8 after heat treatment, and the rest surfaces are R0.8;
the upper part of the feed port 4 is a cylindrical hole with a diameter of 6mm, the middle part is a circular truncated cone-shaped hole, the part at the bottom of the charging hole is a sample molding part, the diameter is 2mm, and the roughness of the inner surface is R0.8.
The surfaces of a positioning block 6 and a guide hole 7 on the punch guide positioning block 5 are polished to R0.8, the shape and the size of a punch 8 are matched with the feed port 4, and the surface of the punch 8 is polished to R0.8;
when the die is used, the upper bottom die and the lower bottom die are positioned through the positioning pins 3 and fastened and assembled together through the bolts 2; then adding powder into each feed inlet 4, sequentially pressing a positioning block and a punch 8 which are guided into the positioning block 5 by the punch into each feed inlet 4, and finally applying certain pressure to the punch 4 for compaction forming.
Example 1
The forming method for processing the antimony alloy evaporation source material by using the die comprises the following steps:
(1) metal powder: the purity of the antimony-platinum alloy evaporation source powder is 99.99%, the mesh number is 200 meshes, and the antimony-platinum ratio (weight percentage) of the antimony alloy Sb to Pt is 4 to 3.
(2) Powder filling: and respectively filling four weighed parts of 0.04g of the antimony-platinum alloy powder into four feed inlets 4 in the die, and knocking the periphery of the die after filling so as to enable the antimony alloy powder in the die to completely enter the forming area of the feed inlets.
(3) Pressing: after powder is filled, a punch guide positioning block and a punch are used for sequentially pre-pressing the powder in the 4 feed ports for 5 minutes, after the powder is compacted, the pressure of 3MPa is applied to the punch on a press machine, and finally the powder is pressed and molded;
(4) demolding: after compression molding, the bolts are removed, and the two bottom molds are carefully separated, so that four molded samples can be taken out, as shown in figure 4
Example 2
The forming method for processing the antimony-platinum alloy evaporation source material by using the die comprises the following steps:
(1) metal powder: the purity of the antimony alloy evaporation source powder is 99.99%, the mesh number is 200 meshes, and the antimony-platinum ratio (weight percentage) in the antimony alloy is Sb/Pt: 5:3.
(2) Powder filling: and respectively filling four weighed parts of 0.05g of the antimony alloy powder into four feed inlets 4 in the die, and knocking the periphery of the die after filling so as to enable the antimony alloy powder in the die to completely enter the forming area of the feed inlets.
(3) Pressing: after powder is filled, the powder in the 4 feed ports is pre-pressed for 6 minutes by using the punch guide positioning block and the punch in sequence, after the powder is compacted, the pressure of 4MPa is applied to the punch on a press machine, and finally the powder is pressed and molded.
(4) Demolding: after compression molding, the bolts are removed, and the two bottom molds are carefully separated, so that four molded samples can be taken out, as shown in figure 4
Example 3
The forming method for processing the antimony-platinum alloy evaporation source material by using the die comprises the following steps:
(1) metal powder: the purity of the antimony-platinum alloy evaporation source powder is 99.99%, the mesh number is 200 meshes, and the antimony-platinum ratio (weight percentage) of the antimony alloy Sb to Pt is 6 to 2.
(2) Powder filling: and respectively filling four weighed parts of 0.06g of the antimony alloy powder into four feed inlets 4 in the die, and knocking the periphery of the die after filling so as to enable the antimony alloy powder in the die to completely enter a forming area of the feed inlets.
(3) Pressing: after powder is filled, the powder in the 4 feed ports is pre-pressed for 10 minutes by using the punch guide positioning block and the punch in sequence, after the powder is compacted, 5MPa pressure is applied to the upper die on the press machine, and finally the powder is pressed and formed.
(4) Demolding: after press forming, the bolts are removed, and the two bottom molds are carefully separated, so that four formed samples can be taken out, as shown in figure 4.
Claims (6)
1. A die for processing and forming antimony alloy evaporation source materials comprises a bottom die, four feed inlets, a punch guide positioning block and a punch, wherein the four feed inlets are equidistantly arranged on the central line of the upper end face of the bottom die; the bottom die consists of 2 upper bottom dies and lower bottom dies which are completely identical in shape and size design, positioning pins and fastening bolts;
when the combined type die is used, the upper bottom die and the lower bottom die are positioned through the positioning pins and then fastened and assembled together through the fastening bolts; then adding powder into each feed inlet, placing a punch positioning block into one of the feed inlets, placing a punch into a guide hole, and sequentially pressing the punch into 4 feed inlets; finally, compaction forming is carried out by applying certain pressure to the punch.
2. The die for forming an antimony alloy evaporation source material according to claim 1, wherein the upper portion of the feed inlet is a cylindrical hole having a diameter of 6mm, the middle portion is a circular truncated cone-shaped hole, the portion located at the bottom is a sample forming portion having a diameter of 2mm and an inner surface roughness of R0.8.
3. The die for forming an antimony alloy evaporation source material according to claim 1, wherein the surface of said punch is polished to R0.8.
4. The mold for manufacturing antimony alloy evaporation source material according to claim 1, wherein the upper and lower bottom molds are made of SKD11, and the inner and outer surfaces thereof are polished to R0.8.
5. The method for using the mold for processing and forming the antimony alloy evaporation source material as claimed in claim 1, wherein the specific steps of using the mold for product forming are as follows:
step 1) metal powder: the purity of the antimony alloy evaporation source powder is 99.99 percent, and the mesh number is 200 meshes;
step 2) powder filling: respectively filling four parts of weighed antimony alloy powder into four feed inlets in the assembled bottom die;
step 3) pressing: after powder is filled, firstly putting a positioning block in a punch guide positioning block into one of the feed inlets, simultaneously putting a punch into a guide hole for prepressing, after the powder is compacted, applying 3-7 MPa of pressure to the punch (8) on a press machine, and finally pressing and forming the powder;
step 4), demolding: after the pressing forming, the fastening bolts and the positioning pins are dismounted, the upper bottom die and the lower bottom die are separated, and then the four formed samples can be taken out.
6. The method for using the mold for manufacturing the antimony alloy evaporation source material according to claim 5, wherein the weight of the antimony alloy powder in the step 2) is 0.04-0.06 g; step 3), the prepressing time is 5-10 minutes; the pressure applied by the punch is 3-7 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497066.8A CN112775425A (en) | 2020-12-17 | 2020-12-17 | Mold for processing and forming antimony alloy evaporation source material and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011497066.8A CN112775425A (en) | 2020-12-17 | 2020-12-17 | Mold for processing and forming antimony alloy evaporation source material and using method |
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| Publication Number | Publication Date |
|---|---|
| CN112775425A true CN112775425A (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011497066.8A Pending CN112775425A (en) | 2020-12-17 | 2020-12-17 | Mold for processing and forming antimony alloy evaporation source material and using method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2476293C2 (en) * | 2011-04-21 | 2013-02-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" | Method of forming powder materials with liophobic fluid and device to this end |
| CN103056359A (en) * | 2013-02-01 | 2013-04-24 | 北京科技大学 | Mould and method for processing and forming tellurium alloy ultraviolet evaporation source material |
| CN203184644U (en) * | 2013-02-01 | 2013-09-11 | 北京科技大学 | Die for machining and forming tellurium alloy ultraviolet evaporation source material |
| CN203751331U (en) * | 2014-03-13 | 2014-08-06 | 北京科技大学 | Mold for evaporation powder for alkali metal evaporator |
| CN106041086A (en) * | 2015-04-09 | 2016-10-26 | 韩国电子通信研究院 | Metal material for 3-dimensional printing, method for manufacturing the same, and method for 3-dimensional printing using the same |
| CN107935592A (en) * | 2017-12-05 | 2018-04-20 | 盐城工学院 | A kind of leadless piezoelectric ceramics and preparation method thereof |
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-
2020
- 2020-12-17 CN CN202011497066.8A patent/CN112775425A/en active Pending
Patent Citations (8)
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| CN103056359A (en) * | 2013-02-01 | 2013-04-24 | 北京科技大学 | Mould and method for processing and forming tellurium alloy ultraviolet evaporation source material |
| CN203184644U (en) * | 2013-02-01 | 2013-09-11 | 北京科技大学 | Die for machining and forming tellurium alloy ultraviolet evaporation source material |
| CN203751331U (en) * | 2014-03-13 | 2014-08-06 | 北京科技大学 | Mold for evaporation powder for alkali metal evaporator |
| CN106041086A (en) * | 2015-04-09 | 2016-10-26 | 韩国电子通信研究院 | Metal material for 3-dimensional printing, method for manufacturing the same, and method for 3-dimensional printing using the same |
| CN107935592A (en) * | 2017-12-05 | 2018-04-20 | 盐城工学院 | A kind of leadless piezoelectric ceramics and preparation method thereof |
| WO2020070451A1 (en) * | 2018-10-05 | 2020-04-09 | C-Tec Constellium Technology Center | Process for manufacturing an aluminum alloy part |
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Application publication date: 20210511 |
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