SI25103A - A method for die-casting and a device for performing the method - Google Patents

A method for die-casting and a device for performing the method Download PDF

Info

Publication number
SI25103A
SI25103A SI201500308A SI201500308A SI25103A SI 25103 A SI25103 A SI 25103A SI 201500308 A SI201500308 A SI 201500308A SI 201500308 A SI201500308 A SI 201500308A SI 25103 A SI25103 A SI 25103A
Authority
SI
Slovenia
Prior art keywords
mold
casting
control unit
die
position sensor
Prior art date
Application number
SI201500308A
Other languages
Slovenian (sl)
Inventor
Andrej Kranjc
Original Assignee
Andrej Kranjc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Andrej Kranjc filed Critical Andrej Kranjc
Priority to SI201500308A priority Critical patent/SI25103A/en
Priority to EP16203338.5A priority patent/EP3189912A1/en
Publication of SI25103A publication Critical patent/SI25103A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14—Machines with evacuated die cavity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)

Abstract

Predlagani izum se nanaša na postopek tlačnega litja in na napravo za izvedbo postopka. Naprava za izvedbo postopka tlačnega litja na livarskem stroju za tlačno litje obsega kalupu (2) priključene medsebojno zaporedno povezane elemente, zlasti filtrirno sredstvo (8), zaporno sredstvo (9), prvi delovni rezervoar (10), drugi kompenzacijski rezervoar (11), in sesalno sredstvo (12), pri čemer so omenjeni elementi (8, 9, 10, 11, 12) podatkovno povezani z upravljalno enoto (6) in posredno preko le-te s položajnim zaznavalom (4), razporejenim na brizgalni šobi (3).The present invention relates to a process of pressure die casting and to a device for carrying out the process. The apparatus for performing the pressure die casting process on the die casting molding machine comprises a connected interconnectedly connected elements, in particular a filtering means (8), a closure means (9), a first working tank (10), a second compensating reservoir (11) and the suction means (12), said elements (8, 9, 10, 11, 12) being connected to the control unit (6) and indirectly via a position sensing device (4) arranged on the spray nozzle (3 ).

Description

POSTOPEK TLAČNEGA LITJA IN NAPRAVA ZA IZVEDBO POSTOPKA [0001] Predlagani izum se nanaša na postopek tlačnega litja in na napravo za izvedbo postopka.[0001] The present invention relates to a die-casting process and to a device for carrying out the process.

[0002] Postopek tlačnega litja, kot na primer tlačnega litja cinka, je v splošnem znan in obsega brizganje staljene kovinske litine pod tlakom v sorazmerno kratkem času neposredno v večkrat uporabljiv kalup, da se dobi primemo oblikovan odlitek. Pri tem je cikel ulivanja staljene litine relativno visok. Težavo tovrstnega ulivanja predstavlja dejstvo, da so v kalupu vseskozi prisotni plini, ki jih vbrizgana litina ne izrine iz kalupa. Posledično je v odlitkih, izdelanih po tovrstnem postopku, prisotna dokajšnja količina lunkerjev, zaradi česar je takšen odlitek lahko celo neuporaben.[0002] A die-casting process, such as zinc die-casting, is generally known and involves the injection of molten metal under pressure in a relatively short time directly into a reusable mold to produce a molded cast. The molten casting cycle is relatively high. The difficulty of this type of casting is the fact that there are gases in the mold at all times, which are not removed from the mold by the injected cast iron. As a result, castings made using this method have a fair amount of lunches, which may make such castings unusable.

[0003] Naloga izuma je ustvariti postopek tlačnega litja, s katerim se izdela odlitek s karseda majhno poroznostjo, pri čemer so mehanske lastnosti odlitega materiala karseda blizu teoretičnim vrednostim.[0003] It is an object of the invention to provide a die-casting process to produce a cast with as little porosity as possible, with the mechanical properties of the cast material as close as possible to theoretical values.

[0004] Nadaljnja naloga izuma je ustvariti napravo za izvedbo postopka tlačnega litja.It is a further object of the invention to provide a device for performing a die-casting process.

[0005] Zastavljena naloga je rešena s postopkom, ki obsega vklop livarskega stroja in vklop, s pomočjo upravljalne enote, naprave za izsesavanje zraka in/ali plinov iz kalupa skozi rego. Zatem se v omenjeni napravi s pomočjo sesalnega sredstva vzpostavi podtlak, pri čemer je fluidna povezava med napravo in kalupom preprečena. Sedaj se sproži tlačno litje v livarskem stroju. Od livarskega stroja se s pomočjo položajnega zaznavala pošlje signal o dosegu končnega položaja brizgalne šobe v upravljalno enoto, katera po prejemu signala iz omenjenega položajnega zaznavala pošlje signal zapornemu sredstvu, s čimer se omogoči fluidno povezavo med kalupom in omenjeno napravo. Temu sledi izsesavanje zraka in plinov iz kalupa ob sočasnem vbrizgavanju vroče taline v kalup. V trenutku, ko je vbrizgavanje taline v kalup končano in upravljalna enota pošlje signal zapornemu sredstvu, se fluidno povezavo med kalupom in napravo zapre. Sledita šeizmet odlitka iz kalupa in kontrola odlitka.This task is solved by a process comprising turning on the foundry machine and switching on it by means of a control unit, a device for sucking air and / or gases from the mold through a slot. Thereafter, a vacuum is created in said device by means of a suction means, preventing fluid connection between the device and the mold. The die casting in the foundry machine is now triggered. From the foundry machine, a signal is sent by means of a position sensor to reach the end position of the nozzle into the control unit, which, after receiving a signal from said position sensor, sends a signal to the closure means, thereby allowing fluid connection between the mold and said device. This is followed by the suction of air and gases from the mold while injecting the hot melt into the mold. At the moment when the injection of the melt into the mold is complete and the control unit sends a signal to the closure means, the fluid connection between the mold and the device closes. Following is the mold cast molding and casting control.

[0006] Postopek tlačnega litja je v nadaljevanju podrobneje predstavljen na osnovi neomejujočega izvedbenega primera naprave in s sklicevanjem na priloženo skico, kjer je shematično prikazana naprava za izvedbo postopka po izumu.[0006] The process of pressure casting is hereinafter described in more detail on the basis of a non-limiting embodiment of the device and with reference to the accompanying drawing, which schematically shows a device for carrying out the process of the invention.

[0007] Na skici je primeroma shematsko predstavljen livarski stroj 1 za tlačno litje kovin, na primer cinka in cinkovih zlitin, ki obsega kalup 2 in brizgalno šobo 3 s položajnim zaznavalom 4. Omenjeno položajno zaznavalo 4 je lahko izbrano kot končno stikalo in podobno. Omenjeni kalup 2 obsega livno votlino 5 in vsaj eno delilno ravnino. Omenjenemu livarskemu stroju 1 je priključena upravljalna enota 6, s katero se upravlja različne parametre, ki so potrebni pri tlačnem litju, na primer tlak ulivanja, hitrost gibanja brizgalne šobe in podobno. Dalje je z livarskim strojem 1 fluidno povezana naprava 7 za izsesavanje zraka in/ali plinov iz kalupa 2 oz. livne votline. 5. Omenjena naprava 7, gledano v smeri proč od livarskega stroja 1, obsega medsebojno zaporedno povezane elemente, zlasti filtrirno sredstvo 8, zaporno sredstvo 9, prvi delovni rezervoar 10, drugi kompenzacijski rezervoar 11, in sesalno sredstvo 12. Pri tem je pri predstavljenem izvedbenem primeru omenjeno filtrirno sredstvo 8 izbrano kot sito trdih delcev in je omenjeno zaporno sredstvo 9 izbrano kot elektro-pnevmatski ventil. Dalje sta prvi in drugi rezervoar 10,11 izbrana kot rezervoarja podtlaka in je omenjeno sesalno sredstvo 12 izbrano kot vakuumska črpalka. Pri postopku po izumu je predvideno, da tlak v kalupu 2 oz. livni votlini 5, ki ga ustvarja omenjeno sesalno sredstvo 12, znaša okoli 0,8 bar, pri čemer se da nivo tlaka regulirati s pomočjo upravljalne enote 6. Za hitro odčitavanje tlaka, ki se nahaja v sistemu, je omenjeno sesalno sredstvo 12 opremljeno z merilnikom tlaka 13.[0007] The drawing shows, for example, a schematic representation of a metal die-casting machine 1, such as zinc and zinc alloys, comprising a mold 2 and a nozzle 3 with a position sensor 4. Said position sensor 4 may be selected as a limit switch and the like. Said mold 2 comprises a casting cavity 5 and at least one dividing plane. The said casting machine 1 is connected to a control unit 6, which controls the various parameters required for injection molding, such as casting pressure, speed of movement of the nozzle and the like. Further, a casting device 7 for suction of air and / or gases from the mold 2 or 2 is fluidly coupled to the foundry machine 1. casting cavities. 5. Said device 7, looking away from the casting machine 1, comprises interconnected elements, in particular filter means 8, closure means 9, first working tank 10, second compensation tank 11, and suction means 12. In the present invention, in the embodiment, said filter medium 8 is selected as a particulate screen and said closure agent 9 is selected as an electro-pneumatic valve. Further, the first and second reservoirs 10,11 are selected as the vacuum reservoirs and said suction medium 12 is selected as a vacuum pump. In the process according to the invention, it is envisaged that the pressure in the mold 2 or. the casting cavity 5 generated by said suction means 12 is about 0.8 bar, the pressure level being adjustable by means of the control unit 6. For rapid reading of the pressure contained in the system, said suction means 12 is provided with pressure gauge 13.

[0008] Omenjena naprava 7 je livarskemu stroju 1 priključena na mestu omenjene delilne ravnine kalupa 2. Po predlaganem izumu je predvideno, da je omenjena delilna ravnina na mestu priključitve naprave 7 kalupu 2 zasnovana s sorazmerno ozko rego 14, ki povezuje livno votlino s priključkom omenjene naprav 7. Širina t omenjene rege 14 je zlasti odvisna od materiala, ki se ga uliva, in uporabljenega tlaka ulivanja. Tako na primer širina t rege 14 v primeru tlačnega litja cinka oz. cinkovih zlitin leži v območju med približno 0,03 mm in približno 0,05 mm.[0008] Said device 7 is connected to the casting machine 1 at the location of said dividing plane of the mold 2. According to the present invention, it is provided that said dividing plane at the point of connection of the device 7 to the mold 2 is formed by a relatively narrow slot 14 connecting the casting cavity to the connection of said devices 7. The width t of said slot 14 depends in particular on the material being cast and the casting pressure used. Thus, for example, the width t of the slit 14 in the case of zinc die casting, respectively. zinc alloys lie between about 0.03 mm and about 0.05 mm.

[0010] Postopek tlačnega litja po izumu steče z vklopom livarskega stroja 1 in vklopom, s pomočjo upravljalne enote 6, naprave 7 za izsesavanje zraka in/ali plinov skozi rego 14 iz kalupa 2. Zatem sesalno sredstvo 12 ustvari zahtevan podtlak v sistemu, zlasti v delovnem rezervoarju 10 in kompenzacijskem rezervoarju 11. Fluidna povezava od delovnega rezervoarja 10 do kalupa 2 oz. livne votline 5 je preprečena. Ko merilnik tlaka 13 pokaže zahtevano vrednost tlaka oz. podtlaka, se z ustrezno časovno zakasnitvijo aktivira tlačno ulivanje v livarskem stroju 1. Omenjena časovna zakasnitev, ki se jo da vnaprej nastaviti na upravljalni enoti 6 ali livarskem stroju 1, predstavlja zakasnitev med trenutkom, ko brizgalna šoba 3 livarskega stroja 1 doseže svoj končni položaj, to je stik z dolivkom kalupa 2, in trenutkom, ko se prične talino vbrizgavati v kalup 2. Omenjena časovna zakasnitev je odvisna od tlaka litja in materiala, ki se ga uliva, in tipično leži v območju med 1 milisekundo in 30 milisekundami.[0010] The injection molding process of the invention is initiated by turning on the casting machine 1 and switching on, through the control unit 6, the air and / or gas suction device 7 through the slot 14 from the mold 2. The suction means 12 then creates the required pressure in the system, in particular in the working tank 10 and the compensation tank 11. The fluid connection from the working tank 10 to the mold 2 or. casting cavity 5 is prevented. When the pressure gauge 13 shows the required pressure value or. pressurization, the injection molding in the foundry machine 1 is activated with an appropriate time delay. Said time delay, which can be set in advance on the control unit 6 or the foundry machine 1, is the delay between the moment when the injection nozzle 3 of the casting machine 1 reaches its final position. , that is, contact with the casting of mold 2, and the moment when the melt is injected into mold 2. This time delay depends on the injection pressure and the material being poured, and typically lies in the range of 1 millisecond to 30 milliseconds.

[0011] Livarski stroj 1 s pomočjo položajnega zaznavala 4 pošlje signal o dosegu končnega položaja brizgalne šobe 3 v upravljalno enoto 6, ki upravlja z zapornim sredstvom 9. Upravljalna enota 6 takoj po prejemu signala iz položajnega zaznavala 4 pošlje ustrezen signal zapornemu sredstvu 9, ki se odpre in s tem omogoči fluidno povezavo med kalupom 2 in delovnim rezervoarjem 10. Podtlak v delovnem rezervoarju 10 izsesa zrak in pline iz kalupa 2 sočasno z vbrizgavanjem vroče taline v kalup 2. V trenutku, ko je vbrizgavanje taline v kalup 2 končano, upravljalna enota pošlje signal zapornemu sredstvu 9, ki ponovno zapre fluidno povezavo kalupa 2 z delovnim rezervoarjem 10. Sledi izmet odlitka iz kalupa 2. Kontrolo odlitka se izvaja na po sebi znane načine, na primer s tehtnico za preverjanje gostote odlitka, s postopkom računalniške tomografije in podobno.[0011] The casting machine 1 sends, via the position sensor 4, a signal to reach the end position of the spray nozzle 3 into the control unit 6 that controls the locking means 9. The control unit 6 sends an appropriate signal to the locking means 9 immediately after receiving a signal from the position sensor 4, which opens and thereby allows fluid connection between the mold 2 and the working tank 10. The pressure in the working tank 10 draws air and gases out of the mold 2 at the same time as the injection of the hot melt into the mold 2. At the moment when the injection of the melt into the mold 2 is completed, the control unit sends a signal to the locking means 9, which again closes the fluid connection of the mold 2 with the working tank 10. Follows the ejection of the cast from the mold 2. The casting control is performed in known ways, for example by means of a density check, using a computed tomography procedure etc.

[0012] Postopek po predlaganem izumu omogoča izdelavo odlitkov, pri katerih je obseg poroznosti zmanjšan na najmanjšo mogočo mero. Sočasno so s tem odpravljene tudi površinske nepravilnosti na odlitku, kar ima za posledico izboljšanje kvalitete pri naknadni galvanski obdelavi odlitkov. Poleg tega so mehanske lastnosti osnovnega materiala, ki se ga uliva, izboljšane na način, da so povsem blizu vrednostim, ki jih predpisuje proizvajalec materiala za brizganje. Dodatno k opisanemu se tekom postopka ulivanja do 30% zmanjšajo tudi livarski tlaki na livarskemu stroju. Postopek in naprava po izumu omogočata zalitost odlitka na tlačnih livarskih strojih celo nad 99%.[0012] The process of the present invention allows castings to be produced in which the extent of porosity is reduced to a minimum. At the same time, this also eliminates surface imperfections in the cast, resulting in improved quality in the subsequent galvanic treatment of the casts. In addition, the mechanical properties of the base material being poured are improved in such a way that they are completely close to the values prescribed by the manufacturer of the injection material. In addition to the above described, the casting pressures on the foundry machine are reduced by up to 30%. The process and apparatus of the invention allow casting of castings on casting machines even above 99%.

Claims (8)

1. Postopek tlačnega litja, značilen po tem, da obsega naslednje korake:1. A die-casting process, characterized in that it comprises the following steps: a) vklop livarskega stroja (1);a) turning on the foundry machine (1); b) vklop, s pomočjo upravljalne enote (6), naprave (7) za izsesavanje zraka in/ali plinov iz kalupa (2) skozi rego (14);b) activating, by means of a control unit (6), a device (7) for suction of air and / or gases from the mold (2) through the slot (14); c) vzpostavitev podtlaka v napravi (7) s pomočjo sesalnega sredstva (12), pri čemer je fluidna povezava med napravo (7) in kalupom (2) preprečena;c) establishing pressure in the device (7) by means of a suction means (12), preventing fluid connection between the device (7) and the mold (2); d) aktiviranje tlačnega litja v livarskem stroju (1) ob časovni zakasnitvi;d) activating the die-casting in the foundry machine (1) at a time delay; e) pošiljanje signala od livarskega stroja (1) s pomočjo položajnega zaznavala (4) o dosegu končnega položaja brizgalne šobe (3) v upravljalno enoto (6);e) sending a signal from the casting machine (1) by means of a position sensor (4) to reach the end position of the nozzle (3) to the control unit (6); f) omogočitev fluidne povezave med kalupom (2) in napravo (7) tako, da upravljalna enota (6) po prejemu signala iz položajnega zaznavala (4) pošlje signal zapornemu sredstvu (9);f) allowing fluid connection between the mold (2) and the device (7) such that the control unit (6) sends a signal to the locking means (9) after receiving a signal from the position sensor (4); g) izsesavanje zraka in plinov iz kalupa (2) ob sočasnem vbrizgavanju vroče taline v kalup (2);g) extracting air and gases from the mold (2) while injecting the hot melt into the mold (2); h) zapiranje fluidne povezave med kalupom (2) in napravo (7) v trenutku, ko je vbrizgavanje taline v kalup (2) končano in upravljalna enota (6) pošlje signal zapornemu sredstvu (9);h) closing the fluid connection between the mold (2) and the device (7) at the moment when the injection of the melt into the mold (2) is complete and the control unit (6) sends a signal to the closure means (9); i) izmet odlitka iz kalupa (2);i) ejection of casting from a mold (2); j) kontrola odlitka.j) casting control. 2. Postopek po zahtevku 1, značilen po tem, da je omenjena časovna zakasnitev nastavljiva vnaprej in predstavlja zakasnitev med trenutkom, ko brizgalna šoba (3) livarskega stroja (1) pride v stik s kalupom (2), in trenutkom, ko se prične talino vbrizgavati v kalup (2).Method according to claim 1, characterized in that said time delay is adjustable in advance and represents a delay between the moment when the injection nozzle (3) of the casting machine (1) comes into contact with the mold (2) and the moment when it starts. Inject the melt into the mold (2). 3. Postopek po zahtevku 1, značilen po tem, da omenjena časovna zakasnitev leži v območju med 1 milisekundo in 30 milisekundami.Method according to claim 1, characterized in that said time delay lies in the range of 1 millisecond to 30 milliseconds. 4. Postopek po zahtevku 1, značilen po tem, da se kontrolo odlitka preverja s tehtnico za preverjanje gostote odlitka, s postopkom računalniške tomografije in podobno.A method according to claim 1, characterized in that the cast control is verified by a cast density checker, a computed tomography procedure and the like. 5. Naprava za izvedbo postopka tlačnega litja na livarskem stroju za tlačno litje, ki obsega kalup in brizgalno šobo, po zahtevkih 1 do 4, značilna po tem, da obsega kalupu (2) priključene medsebojno zaporedno povezane elemente, zlasti filtrimo sredstvo (8), zaporno sredstvo (9), prvi delovni rezervoar (10), drugi kompenzacijski rezervoar (11), in sesalno sredstvo (12), pri čemer so omenjeni elementi (8, 9, 10, 11, 12) podatkovno povezani z upravljalno enoto (6) in posredno preko le-te s položajnim zaznavalom (4), razporejenim na brizgalni šobi (3).Apparatus for performing a die-casting process on a die-casting machine comprising a mold and nozzle according to claims 1 to 4, characterized in that it comprises interconnected elements, in particular the filter means (8), connected to the mold (2). , a closure means (9), a first working reservoir (10), a second compensating reservoir (11), and a suction means (12), said elements (8, 9, 10, 11, 12) being connected to the control unit (8). 6) and indirectly through it with a position sensor (4) arranged on the nozzle (3). 6. Naprava po zahtevku 5, značilna po tem, daje omenjeno položajno zaznavalo (4) izbrano kot končno stikalo in podobno.Apparatus according to claim 5, characterized in that said position sensor (4) is selected as a limit switch and the like. 7. Naprava po zahtevkih 5 in 5, značilna po tem, da so omenjeni elementi (8, 9, 10, 11, 12) preko rege (14), ki je zasnovana na mestu delilne ravnine kalupa (2), fluidno povezani z omenjenim kalupom (2).Device according to claims 5 and 5, characterized in that said elements (8, 9, 10, 11, 12) are fluidly connected to said via a gap (14) formed at the location of the dividing plane of the mold (2). mold (2). 8. Naprava po zahtevkih 5 do 7, značilna po tem, da je omenjeno filtrirno sredstvo (8) izbrano kot sito trdih delcev in je omenjeno zaporno sredstvo (9) izbrano kot elektropnevmatski ventil in sta prvi in drugi rezervoar (10,11) izbrana kot rezervoarja podtlaka in je omenjeno sesalno sredstvo (12) izbrano kot vakuumska črpalka.Apparatus according to claims 5 to 7, characterized in that said filter means (8) is selected as a particulate screen and said closure means (9) is selected as an electro-pneumatic valve and the first and second reservoirs (10,11) are selected as a vacuum reservoir and said suction means (12) is selected as a vacuum pump.
SI201500308A 2015-12-23 2015-12-23 A method for die-casting and a device for performing the method SI25103A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201500308A SI25103A (en) 2015-12-23 2015-12-23 A method for die-casting and a device for performing the method
EP16203338.5A EP3189912A1 (en) 2015-12-23 2016-12-12 A method of pressure die casting and a device for carrying out said method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201500308A SI25103A (en) 2015-12-23 2015-12-23 A method for die-casting and a device for performing the method

Publications (1)

Publication Number Publication Date
SI25103A true SI25103A (en) 2017-06-30

Family

ID=57749653

Family Applications (1)

Application Number Title Priority Date Filing Date
SI201500308A SI25103A (en) 2015-12-23 2015-12-23 A method for die-casting and a device for performing the method

Country Status (2)

Country Link
EP (1) EP3189912A1 (en)
SI (1) SI25103A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3490188B2 (en) * 1995-06-08 2004-01-26 東芝機械株式会社 Vacuum control method and apparatus in vacuum die casting
JP3477124B2 (en) * 1999-10-21 2003-12-10 株式会社日本製鋼所 Method of applying release agent in metal injection molding machine and metal injection mold
JP2001205392A (en) * 2000-01-26 2001-07-31 Hitachi Ltd Method for manufacturing molding and mold
JP3502600B2 (en) * 2000-09-14 2004-03-02 株式会社日本製鋼所 Hot runner mold, injection molding apparatus, and hot runner molding method
JP4041489B2 (en) * 2004-12-02 2008-01-30 株式会社日本製鋼所 Method of applying release agent in metal injection molding machine

Also Published As

Publication number Publication date
EP3189912A1 (en) 2017-07-12

Similar Documents

Publication Publication Date Title
CN107000047A (en) Mold pump
US20170182552A1 (en) Method for operating a vacuum die-casting machine
KR101994062B1 (en) Casting device and casting method
US10933465B2 (en) Casting system
KR101810522B1 (en) Inclined gravity casting device
US20100252222A1 (en) Casting Device
US7104310B2 (en) Mold making machine with separated safety work zones
JP2011143581A (en) Injection nozzle for wax model injection molding apparatus
SI25103A (en) A method for die-casting and a device for performing the method
JP2013035019A (en) Decompression and oxygen filling-up device for pf die-casting apparatus
US7213634B1 (en) Offset mold process
JP2011005504A (en) Vacuum die casting apparatus and method
CN107206471B (en) The casting method of the article of wax-pattern Coinjection molding apparatus and use wax-pattern Coinjection molding apparatus
JP6489500B2 (en) Casting apparatus and casting method
KR101579549B1 (en) How to neutralize the stench of amine gas for cold box process, and amine gas generator containing the same
JP6183272B2 (en) Casting apparatus and casting method
JP2009269073A (en) Die-casting method and die-casting device
JP3655992B2 (en) Vacuum die casting apparatus and casting method
US20200030875A1 (en) Die-casting machine with a valve diagnosis system
JP6348003B2 (en) Mold cooling method and mold cooling system
JPS5846386B2 (en) Low pressure die casting method and equipment
KR102510242B1 (en) System for pore free diecasting and method thereof
JP2008073725A (en) Molten metal feeding apparatus in die casting and its method
IT201800002428A1 (en) MACHINERY AND METHOD OF INJECTION MOLDING OF HOLLOW ELEMENTS
KR102510235B1 (en) Pore free apparatus for diecasting and operating method thereof

Legal Events

Date Code Title Description
OO00 Grant of patent

Effective date: 20170703