CN105921760A - Machining equipment and machining process for silver tin oxide - Google Patents
Machining equipment and machining process for silver tin oxide Download PDFInfo
- Publication number
- CN105921760A CN105921760A CN201610487184.8A CN201610487184A CN105921760A CN 105921760 A CN105921760 A CN 105921760A CN 201610487184 A CN201610487184 A CN 201610487184A CN 105921760 A CN105921760 A CN 105921760A
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- China
- Prior art keywords
- tin oxide
- powder
- casing
- atomising device
- connects
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/086—Cooling after atomisation
- B22F2009/0876—Cooling after atomisation by gas
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- Manufacture And Refinement Of Metals (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
Abstract
The invention discloses machining equipment and a machining process for a silver tin oxide. The machining equipment for the silver tin oxide comprises a smelting device and a PLC (Programmable Logic Controller) control system, wherein the smelting device is connected with an atomizing device; a valve is arranged between the smelting device and the atomizing device; the atomizing device is connected with a pressurizing device and a vacuumizing device; the bottom of the atomizing device is provided with a powder ejecting opening; the powder ejecting opening is connected with a powder collecting and screening device; the powder collecting and screening device comprises a box body; the box body is separated into a coarse material cavity and a fine material cavity by a baffle plate; an air jetting hole is arranged at a position, which approaches the powder ejecting opening, of the box body; and the coarse material cavity is provided with a material returning device connected with the smelting device. By using the machining equipment and the machining process for the silver tin oxide, large-grained metal dust can be reduced, so that the metal dust is oxidized more sufficiently, and the product quality is improved.
Description
Technical field
The invention belongs to process equipment and the processing technique thereof in metal fabrication techniques field, specifically siller tin oxide.
Background technology
Along with the development of science and technology, industry manufacture field is increasing to the demand of electromechanical compo, the most also requires more and more higher to its performance indications.Sliver oxidized tin contactor materials is development in recent years Novel non-toxic electrical contact material quickly, has the advantages such as thermally-stabilised arc erosion good, resistance to and resistance fusion welding are strong, is the ideal material at present in catalyst, relay field.
Existing siller tin oxide processing technique step is: by silver ingot, stannum is placed in melting ingot casting in smelting furnace, then ingot is processed into chip, the mixing material based on siller tin oxide is obtained through High Temperature High Pressure oxidation, crush through machining, by chip extrusion forming in punching block, the most at high temperature it is squeezed into bar, band, then obtains siller tin oxide bar, band through drawing.
The existing method that ingot is made chip is usually and uses ball mill ball milling or use nebulization, in ball mill mechanical milling process, it may be acted on by grinding compressive stress repeatedly, cause and be present in crack extesion intrinsic or newly-generated on this particle surface, and then be directed at its broken or generation plastic deformation.When this granule is the most crushed. certain one-level new granule dyschezia of generation is with the most levigate, this is because the crackle on new grain surface is relatively thin, and the cause that the crackle probability of a certain minimum fracture strength also reduces occurs.When shattering process proceeds, required finished breaking stress may increase to the degree making granule produce plastic deformation.Now, along with the generation of plastic deformation, granule just will not be by levigate.Therefore, a granularity ultimate value is had during grinding material, say, that when the grinding of material enters into the scope of superfine grinding, the pulverization of ball mill is the most more and more difficult.All there is an actual grinding limit in most of grinding systems, this limit depends on that grinding product granule produces the tendency again built up mainly, and the physical equilibrium set up between building up and being broken.Long prolongation Ball-milling Time is skimble-skamble, only result in the increase of energy consumption, because meticulous granule cannot store the elastic energy made needed for crack extesion effectively, the powder particle that therefore ball-milling method prepares is relatively large, is difficult to fully oxidized in follow-up oxidizing process.Nebulization more advantage by contrast, nebulization is to be sprayed from shower nozzle by high pressure by melted metal liquid, the method forming powder after the drop cooling of ejection, the powder of nebulization ejection is less relative to ball mill ball milling powder out, can aoxidize more abundant during subsequent oxidation, and the granule of nebulization shower nozzle ejection also has size, one is due to ejection some oarse-grained drops of the uneven existence caused, two be due to ejection drop contacted before also not condensing after form big liquid, thus have oarse-grained powder after causing the droplet formation powder that nebulization sprays, subsequent oxidation process is caused to be difficult to fully oxidized.
Summary of the invention
The present invention is directed to prior art not enough, it is provided that the process equipment of siller tin oxide and processing technique thereof, the process equipment of this kind of siller tin oxide and processing technique thereof can reduce oarse-grained metal dust, so that oxidization of metal powder is more abundant, product quality improves.
nullIn order to solve above-mentioned technical problem，The present invention is addressed by following technical proposals: the process equipment of siller tin oxide，Including smelting apparatus and PLC control system，Described smelting apparatus connects atomising device，It is provided with valve between described smelting apparatus and described atomising device，Connect on described atomising device and have pressurizer and vacuum extractor，Powder ejiction opening it is provided with bottom described atomising device，Described powder ejiction opening connects powder collection screen screening device，Described powder collection screen screening device includes casing，The dividing plate keeping the connection of casing upper end it is vertically arranged with in the middle part of described casing，Casing is separated into coarse fodder chamber and fines chamber by described dividing plate，Described casing is provided with fumarole at described powder ejiction opening，Described fumarole connects air jet system，Described air jet system includes motor and impeller，It is provided with venthole with on the casing of described fumarole opposite side，Described venthole is provided with check valve，The air inlet of described air jet system connects refrigerating plant，It is provided with discharging opening bottom described fines chamber，The feeding back device connecting described smelting apparatus it is provided with on described coarse fodder chamber.This equipment prevents the motlten metal in atomising device oxidized by the air in vacuum extractor evacuation atomising device, ejection cold air is coordinated by chiller and air jet system, make the motlten metal fast setting that atomising device sprays, thus prevent motlten metal to be followed by contact bonding knot in ejection and form bulky grain powder, blow makes oarse-grained powder drop into coarse fodder intracavity simultaneously, short grained powder drops into fines intracavity, oarse-grained powder backs into refuse in smelting apparatus from feeding back device, so that be all fine powder from discharging opening powder out, be conducive to later stage oxidation.
In technique scheme, preferably, described feeding back device includes that being connected to both sides, coarse fodder chamber has feed back pipeline, described feed back pipeline forms loop and connects described smelting apparatus, the chain that head and the tail connect it is provided with in described feed back pipeline, the delivery board mated with described feed back pipe diameter it is provided with on described chain, it is provided with, on described feed back pipeline, the sprocket wheel mated with described chain, connecting on output shaft on described motor and have described sprocket wheel, when described electric motor starting, described sprocket wheel rotates with described impeller simultaneously.Use this structure to make during feed back not interfere with the operation of air-flow at fumarole, control to open impeller so that chain will run when blowing device works by motor with sprocket wheel simultaneously, preventing the coarse fodder in coarse fodder chamber from piling up and too much fall in fines case, this structure operationally produces certain vibration thus prevents powder from piling up simultaneously.
In technique scheme, preferably, described refrigerating plant 9 connects nitrogen cylinder 711, is filled with nitrogen so that fumarole 74 sprays nitrogen in refrigerating plant 9, prevent air from entering casing, prevent metal oxidized and make the metal returning in smelting apparatus be difficult to be melted.
The processing technique of the process equipment of siller tin oxide, comprises the following steps: 1, silver ingot, tin slab is put into described smelting apparatus and is melted；2, start described vacuum extractor and evacuate the air in described atomising device, open in melted metal is put into atomising device by described valve and close described valve；3, starting described motor makes described impeller and described sprocket wheel rotate, and starts described chiller, starts described pressurizer and atomising device is filled with nitrogen supercharging.
In technique scheme, it is preferred that also include between step 2 and step 3 and be filled with nitrogen and replace the step of air in described casing.
nullThe present invention is compared with prior art，Have the advantages that this equipment prevents the motlten metal in atomising device oxidized by the air in vacuum extractor evacuation atomising device，Ejection cold air is coordinated by chiller and air jet system，Make the motlten metal fast setting that atomising device sprays，Thus prevent motlten metal to be followed by contact bonding knot in ejection and form bulky grain powder，Blow makes oarse-grained powder drop into coarse fodder intracavity simultaneously，Short grained powder drops into fines intracavity，Oarse-grained powder backs into refuse in smelting apparatus from feed back pipeline，So that be all fine powder from discharging opening powder out，Be conducive to later stage oxidation，Control to open by motor so that chain will run when blowing device works with sprocket wheel by impeller simultaneously，Prevent from the coarse fodder in coarse fodder chamber from piling up too much to fall in fines case.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the attachment structure schematic diagram of chain and delivery board.
Detailed description of the invention
nullWith detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings: see Fig. 1 to Fig. 3，The process equipment of siller tin oxide，Including smelting apparatus 1 and PLC control system，Described smelting apparatus 1 connects atomising device 2，It is provided with valve 3 between described smelting apparatus 1 and described atomising device 2，Connect on described atomising device 2 and have pressurizer 4 and vacuum extractor 5，It is provided with powder ejiction opening 21 bottom described atomising device 2，Described powder ejiction opening 21 connects powder collection screen screening device 6，Described powder collection screen screening device 6 includes casing 7，The dividing plate 71 keeping the connection of casing 7 upper end it is vertically arranged with in the middle part of described casing 7，Casing 7 is separated into coarse fodder chamber 72 and fines chamber 73 by described dividing plate 71，Described casing 7 is provided with fumarole 74 at described powder ejiction opening 21，Described fumarole 74 connects air jet system 8，Described air jet system 8 includes motor and impeller，It is provided with venthole 75 with on the casing 7 of described fumarole 74 opposite side，Described venthole 75 is provided with check valve 76，The air inlet of described air jet system 8 connects refrigerating plant 9，It is provided with discharging opening 77 bottom described fines chamber 73，The feeding back device 10 connecting described smelting apparatus 1 it is provided with on described coarse fodder chamber 72.This equipment prevents the motlten metal in atomising device oxidized by the air in vacuum extractor evacuation atomising device, ejection cold air is coordinated by chiller and air jet system, make the motlten metal fast setting that atomising device sprays, thus prevent motlten metal to be followed by contact bonding knot in ejection and form bulky grain powder, blow makes oarse-grained powder drop into coarse fodder intracavity simultaneously, short grained powder drops into fines intracavity, oarse-grained powder backs into refuse in smelting apparatus from feeding back device, so that be all fine powder from discharging opening powder out, be conducive to later stage oxidation.
Described feeding back device 10 includes that being connected to both sides, coarse fodder chamber 72 has feed back pipeline 78, described feed back pipeline 78 forms loop and connects described smelting apparatus 1, the chain 79 that head and the tail connect it is provided with in described feed back pipeline 78, it is provided with on described chain 79 and the delivery board 710 of described feed back pipeline 78 match of pipe diameter, the sprocket wheel mated with described chain 79 it is provided with on described feed back pipeline 78, connecting on output shaft on described motor and have described sprocket wheel, when described electric motor starting, described sprocket wheel rotates with described impeller simultaneously.Use this structure to make during feed back not interfere with the operation of air-flow at fumarole, control to open impeller so that chain will run when blowing device works by motor with sprocket wheel simultaneously, preventing the coarse fodder in coarse fodder chamber from piling up and too much fall in fines case, this structure operationally produces certain vibration thus prevents powder from piling up simultaneously.
Described refrigerating plant 9 connects nitrogen cylinder 711, is filled with nitrogen so that fumarole 74 sprays nitrogen in refrigerating plant 9, prevents air from entering casing, prevents metal oxidized and make the metal returning in smelting apparatus be difficult to be melted.
The processing technique of the process equipment of siller tin oxide, comprises the following steps: 1, silver ingot, tin slab is put into described smelting apparatus 1 and is melted；2, start described vacuum extractor 5 and evacuate the air in described atomising device 2, open in melted metal is put into atomising device 2 by described valve 3 and close described valve 3；3, starting described motor makes described impeller and described sprocket wheel rotate, and starts described chiller 9, starts described pressurizer 4 and atomising device 2 is filled with nitrogen supercharging.
Also include between step 2 and step 3 and be filled with nitrogen and replace the step of air in described casing 7.
Claims (5)
- null1. the process equipment of siller tin oxide，Including smelting apparatus (1) and PLC control system，Described smelting apparatus (1) connects atomising device (2)，It is characterized in that: between described smelting apparatus (1) and described atomising device (2), be provided with valve (3)，The upper connection of described atomising device (2) has pressurizer (4) and vacuum extractor (5)，Described atomising device (2) bottom is provided with powder ejiction opening (21)，Described powder ejiction opening (21) connects powder collection screen screening device (6)，Described powder collection screen screening device (6) includes casing (7)，Described casing (7) middle part is vertically arranged with the dividing plate (71) keeping the connection of casing (7) upper end，Casing (7) is separated into coarse fodder chamber (72) and fines chamber (73) by described dividing plate (71)，Described casing (7) is provided with fumarole (74) near described powder ejiction opening (21) place，Described fumarole (74) connects air jet system (8)，Described air jet system (8) includes motor and impeller，Be provided with venthole (75) on the casing (7) of described fumarole (74) opposite side，Described venthole (75) is provided with check valve (76)，The air inlet of described air jet system (8) connects refrigerating plant (9)，Described fines chamber (73) bottom is provided with discharging opening (77)，The feeding back device (10) connecting described smelting apparatus (1) it is provided with on described coarse fodder chamber (72).
- 2. the process equipment of siller tin oxide as claimed in claim 1, it is characterized in that: described feeding back device (10) includes that being connected to coarse fodder chamber (72) both sides has feed back pipeline (78), described feed back pipeline (78) forms loop and connects described smelting apparatus (1), the chain (79) that head and the tail connect it is provided with in described feed back pipeline (78), it is provided with on described chain (79) and the delivery board (710) of described feed back pipeline (78) match of pipe diameter, it is provided with, on described feed back pipeline (78), the sprocket wheel mated with described chain (79), connect on output shaft on described motor and have described sprocket wheel, when described electric motor starting, described sprocket wheel rotates with described impeller simultaneously.
- 3. the process equipment of siller tin oxide as claimed in claim 1, it is characterised in that: described refrigerating plant (9) connects nitrogen cylinder (711).
- 4. apply the processing technique of the process equipment of siller tin oxide as claimed in claim 2, it is characterised in that comprise the following steps: 1, silver ingot, tin slab are put into described smelting apparatus (1) and melted；2, start described vacuum extractor (5) and evacuate the air in described atomising device (2), open in melted metal is put into atomising device (2) by described valve (3) and close described valve (3)；3, starting described motor makes described impeller and described sprocket wheel rotate, and starts described chiller (9), starts described pressurizer (4) and atomising device (2) is filled with nitrogen supercharging.
- 5. the processing technique of the process equipment of siller tin oxide as claimed in claim 4, it is characterised in that: also include the step being filled with nitrogen replacement described casing (7) interior air between step 2 and step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610487184.8A CN105921760B (en) | 2016-06-29 | 2016-06-29 | The process equipment and its processing technology of siller tin oxide |
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| CN201610487184.8A CN105921760B (en) | 2016-06-29 | 2016-06-29 | The process equipment and its processing technology of siller tin oxide |
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| CN105921760A true CN105921760A (en) | 2016-09-07 |
| CN105921760B CN105921760B (en) | 2018-08-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108274A (en) * | 2018-10-24 | 2019-01-01 | 云南锡业锡材有限公司 | A kind of kamash alloy spherical shape welding powder rapidly and efficiently returning charge processing equipment and processing method |
| CN114260456A (en) * | 2021-12-18 | 2022-04-01 | 江苏申隆锌业有限公司 | Adopt innoxious apparatus for producing of atomizing preparation zinc powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109108274A (en) * | 2018-10-24 | 2019-01-01 | 云南锡业锡材有限公司 | A kind of kamash alloy spherical shape welding powder rapidly and efficiently returning charge processing equipment and processing method |
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| CN114260456A (en) * | 2021-12-18 | 2022-04-01 | 江苏申隆锌业有限公司 | Adopt innoxious apparatus for producing of atomizing preparation zinc powder |
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| Publication number | Publication date |
|---|---|
| CN105921760B (en) | 2018-08-14 |
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