SE189919C1 - - Google Patents
Info
- Publication number
- SE189919C1 SE189919C1 SE189919DA SE189919C1 SE 189919 C1 SE189919 C1 SE 189919C1 SE 189919D A SE189919D A SE 189919DA SE 189919 C1 SE189919 C1 SE 189919C1
- Authority
- SE
- Sweden
- Prior art keywords
- casting
- sleeves
- layer
- metal
- sleeve
- Prior art date
Links
- 238000005266 casting Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 238000005058 metal casting Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000007779 soft material Substances 0.000 claims description 2
- 238000007592 spray painting technique Methods 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 6
- 238000001746 injection moulding Methods 0.000 claims 3
- 238000003825 pressing Methods 0.000 claims 1
- 239000012791 sliding layer Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Uppfinnare: E Hermann Prioritet begard trait den 7 jannari 1961 (Forbundsrepubliken Tyskland) F5religgande uppfinning haul& sig till ett satt att framstalla lattmetallkroppar med ett, atminstone pa en sida tippet, cylindriskt halrum forsett med ett skikt av en hardare me-tall, varvid det infodrande skiktet Worts genom sprutning pa en Ware svarande mot halrummet, varpa den skiktbelagda bararen infores i formhatrummet hos en for gjutning av lattmetallkroppen avsedd permanentform, omgjutes med ldttmetall under anvdndande av ett gjuttryck, som ãr tillraeldigt for att lata den flytande lattmetallen tranga in i f ordjupningarna hos det infodrande skiktet, och att man sedan avlagsnar bararen efter det lattmetallgjutstycket stelnat. Inventor: E Hermann Priority was given on January 7, 1961 (Federal Republic of Germany). layer Worts by spraying on a Ware corresponding to the cavity, whereupon the layered carrier is inserted into the mold cavity of a permanent mold for casting the lath metal body, recast with solder using a casting pressure which is sufficient to allow the liquid lath metal to penetrate the lining layer, and that the bar is then removed after the light metal casting has solidified.
Det fir kant att efter detta forfarande framstalla tryckgjutna lattmetallcylindrar. Darvid anbringas, ph den for eylinderborrningen avsedda karnan hos gjutverktyget, en hud eller ett skikt av stal enligt metallsprutforfarande, vilket skikts yttre yta uppvisar en genom detta forfarande asadkommen grov eller ra yta. Karnan med det pasprutade stMskiktet infores i formhMrummet hos tryckgjutverktyget och sedan gjutes pa vanligt salt en cylinder, varvid en intim sammanbindning ager rum mellan lattmetallcylinder-materialet och ytan hos stalskiktet, sa att det senare vid utdragning av karnan kvarblir i gjutstycket och i detsamma bildar ett for cylinderhMet armerande f oder. It is possible to produce die-cast light metal cylinders after this process. In this case, the core of the casting tool intended for the cylinder bore is applied to a skin or a layer of steel according to a metal spraying method, which outer surface of the layer has a rough or rough surface which is obtained by this method. The core with the injection-molded steel layer is inserted into the mold cavity of the die-casting tool and then a cylinder is cast on ordinary salt, an intimate connection forming space between the light metal cylinder material and the surface of the steel layer, so that when the core is pulled out it remains in the casting for cylinderhMet reinforcing f oder.
Vid detta kfinda arbetssatt Ar det stOrande att framstallning av det som foder tjanande stalskiktet mdste genomforas pa gjutverktyget, vilket Or den n_ormala gjuteykeln lingsammare och till och med nodvandiggor att for framstallning av ett bestamt antal armerade cylindrar ph en given tid vasentligt st6rre antal gjutmaskiner maste tagas i bruk. In this case, it is important that the production of the steel layer serving as a liner must be carried out on the casting tool, which makes the normal casting cycle more efficient and even necessary for the production of a certain number of reinforced cylinders for a given time. in use.
Dupl. ki. 1 c: 25/02 Dessutom underkastas karnan hos gjutverktyget vid detta arbetssatt stark forslitning och maste ofta utbytas. Dupl. ki. 1 c: 25/02 In addition, the core of the casting tool is subjected to severe wear during this operation and must often be replaced.
Till grund for foreliggande uppfinning ligger uppgiften att undvika dessa nackdelar, i synnerhet ett hojande av utnyttjningsgraden hos gjutmaskinen vid ett genomforande av det forutnamnda forfarandet. The object of the present invention is to avoid these disadvantages, in particular an increase in the degree of utilization of the casting machine in carrying out the aforementioned method.
For att Visa denna uppgift fbreslas enligt foreliggande uppfinning, att man som barare fOr infodringsskikten icke anvander karnan hos gjutverktyget utan hylsor, vilka kunna pastickas den i sin diameter minskade karnan resp. karnliknande dornen hos gjutverktyget och vars framstallning blir oberoende av gjutmaskinen att anvandas och som kunna sprutas med hardmetall. In order to show this object, it is according to the present invention that the core of the casting tool is not used as a bar for the lining layers, but sleeves, which can be pasted on the core reduced in its diameter resp. the core-like mandrel of the casting tool and whose manufacture becomes independent of the casting machine to be used and which can be sprayed with cemented carbide.
Exempelvis kunna infodringsskikten sprutas pA hylsor, av ett for bildande av lOpskikt lfimpligt mjukt material, isynnerhet ett sadant med goda glidegenskaper, t. ex. av en plast sasom polytetraflnoretylen eller av My, tenn eller zink, vilkas ytterdiameter Ar ungef Ar lika stor som diametern hos det halrum som skall framstallas i gjutstyeket. Sadana hylsor visa en tillracklig hallfasthet for att, i och for sig sproda och darfor utan med dem forbunden barkropp, leke transportabla infordringsskikt skull kunna bringas oskadade fran stallet for deras framstallning till gj utanordningen och pastickas karnan hos gjutverktyget. Darvid racker det, att man gar vaggtjockleken hos barhylsan just sit stor att detta syfte uppnas. Vid utdragning av karnan forblir draghylsan med det med densamma forbundna hardmetallskiktet kvar i lattmetallgjutstycket. Den avlagsnas sedan i sin tur genom spanavskiljande bearbetning, I. ex. urborrning och/eller genom fortrangning, t. ex. 2— — medelst en valsdorn, sa att i sjalva verket endast hardmetallskiktet kvarbliver i gjutstycket. Bearbetningen fororsakar pa grund av mjukheten hos barhylsan ej nagon storre arbetsinsats. Bearbetningen behover 1. O. icke drivas till ett fullsta.ndigt avlagsnande av barmaterialet, tvartom kan det — om det senare uppvisar goda glidegenskaper — just -vara en fordel, att bearbeta urborrningar endast sd langt, att Indian barande delar av den harda infodringen aven en del av det mjuka barmaterialet kommer att kvarsta. Detta ar isynnerhet att rekommendera nar barmaterialet iir blandat med smorjmedel, sasom grafit eller molybdendisulfid eller om man fore pasprutning av hardmetall pa barhylsan liar pafort ett skikt av dylika smorjmedel pa hylsans yta. For framstallning av en blandzon, i vilken saval hart infodringsmaterial som aven mjukare barmaterial och smorjmedel inga bredvid varandra, kan det for ovrigt vara fordelaktigt, an man framstaller barhylsan genom pasprutning av dess material pa en dorn och att man redan fore det att pasprutningen av barhylsa-materialet avslutas aven paborjar pasprutning av hardmetallskiktet Foreliggande uppfinning ar dock icke begransad till anvandning av barhylsor av mjuka material. Man kan lika garna som barare for infodringsskikten anvanda hylsor med en hard yta, som icke angripes av den hardmetall som pasprutas. Man kan t. ex. anvanda hardforkromade och eventuellt med ett smorjmedel, t. ex. med en plastgrafit-blandning overdragna stalhylsor och efter omgjutning avlagsna desamma genom utdragning eller uttryckning ur gjutstycket, varigenom hylsorna pa nytt kunna anvandas. For example, the lining layers can be sprayed on sleeves, of a soft material which can be formed to form a running layer, in particular one with good sliding properties, e.g. of a plastic such as polytetrafluoroethylene or of My, tin or zinc, the outer diameter of which is approximately equal to the diameter of the cavity to be produced in the casting. Such sleeves show a sufficient hall strength so that, in and of themselves spreading and therefore without a bare body connected to them, playable transportable laminating layers can be brought undamaged from the stable for their manufacture to the casting device and paste the core of the casting tool. In doing so, it is enough that you increase the rock thickness of the bar sleeve just so large that this purpose is achieved. When the karnan is pulled out, the draw sleeve with the cemented carbide layer connected to it remains in the light metal casting. It is then removed in turn by chip-separating processing, I. ex. drilling and / or by displacement, e.g. 2— - by means of a roller mandrel, so that in fact only the cemented carbide layer remains in the casting. Due to the softness of the bar sleeve, the machining does not cause any major work effort. The machining need not be driven to a complete deposition of the bare material, on the contrary - if it later shows good sliding properties - it may just be an advantage to machin bores only so far that Indian bearing parts of the hard lining some of the soft bar material will remain. This is especially recommended when the bare material is mixed with lubricants, such as graphite or molybdenum disulphide, or if a cemented carbide spray is applied to the bar sleeve, a layer of such lubricants is applied to the surface of the sleeve. For the production of a mixing zone, in which both hard lining materials and even softer bar material and lubricants are not next to each other, it can moreover be advantageous to produce the bar sleeve by spray-painting its material on a mandrel and already pre-spraying the bare sleeve The present invention is not limited to the use of soft sleeve bar sleeves. Sleeves with a hard surface which are not attacked by the cemented carbide which is sprayed can be used as the yarns as bare for the lining layers. One can e.g. use hard chrome-plated and possibly with a lubricant, e.g. with a plastic-graphite mixture coated steel sleeves and after recasting they are removed by pulling out or extruding from the casting, whereby the sleeves can be used again.
Uppfinningen belyses ytterligare med hjalp av bifogade ritningar. The invention is further elucidated with the aid of the accompanying drawings.
Fig. 1 visar i tre med a, b, och c betecknade avsnitt genomforandet av sattet enligt uppfinningen under anvandning av en mjuk barhylsa 1, av vilken i avsnitt a visas ett kraftigt forstorat snitt titan hardmetallskikt. Denna hylsa uppvisar en ytterdiameter d, som ar en aning stOrre an onskad halrumsdiameter d' hos det fardiga arbetsstycket. Avsnitt b visar hylsavsnittet 1 med pasprutat harmetallskikt 2. Avsnitt c visar en genomskarning av det fardiga arbetsstycket, vid vilket hardmetallinfodringen 2 ar forankrad i det genom omgjutning paforda materialet hos lattmetallgjutstycket. Arbetsstycket ursvarvas till diametern d', varigenom forutom infodringen 2 liven en del av hylsan 1 kvarbliver. Fig. 1 shows in three sections denoted by a, b, and c the implementation of the set according to the invention using a soft bar sleeve 1, of which in section a a greatly enlarged section of titanium cemented carbide layer is shown. This sleeve has an outer diameter d, which is slightly larger than the desired cavity diameter d 'of the finished workpiece. Section b shows the sleeve section 1 with a sprayed resin metal layer 2. Section c shows a cross-section of the finished workpiece, in which the cemented carbide liner 2 is anchored in the material of the lath metal casting which is cast through. The workpiece is turned to the diameter d ', whereby in addition to the lining 2, part of the sleeve 1 remains.
Fig. 2 visar schematiskt ett tryckgjutverktyg for genomforande av sattet enligt uppfiniiingen under anvandning av en forkromad Stalhylsa 10, som oberoende av gjutanordningen pasprutas ett hardmetallskikt. Fig. 2 schematically shows a pressure casting tool for carrying out the set according to the invention using a chromed steel sleeve 10, which independently of the casting device is fitted with a cemented carbide layer.
Verktyget bestar av tva formhalvor 4 och 5, mellan vilka bildas ett formhalrum 6 och en ingjutkanal 7 Air inforande av flytande lattmetal' 1 formhalrummet. Dessutom hor till verktyget en dorn 8, som i ett stycke ãr fOrenad med en pastickningsdorn 9 for barhylsan 10, samt en motdorn 11. The tool consists of two mold halves 4 and 5, between which a mold cavity 6 and a casting channel 7 are formed. In addition, the tool includes a mandrel 8, which in one piece is connected to a paste-knitting mandrel 9 for the bar sleeve 10, and a counter-mandrel 11.
Vid oppnad form och nar motdornen 11 avtagits kan en barhylsa 10 med pa.sprutat skikt 2 skjutas pa dornen 9. Genom sammanfOrande av formhalvorna 4, 5 i deras inritade arbetsstallning och nedsankning av motdornen 11 -slutes formen och darefter gjutes arbetsstycket genoin inforande av flytande me-tall i formhalrummet 6. Efter stelning av den ingjutna lattmetallen tryckas dornarna 8, 9 och 11 gemensamt frail det inritade laget och nedat, varvid hylsan -10 tryckes ut ur gjutstycket, medan det med densamma forut forenade infodringsskiktet 2 kvarbliver i gjutstycket. Motdornen 11 Ores nu aterigen upp och fornien Oppnas sa att gjutstycket och avensa hylsan 10 kan avlagsnas. Istallet for den avlagsnade hylsan 10 insattes en ny hylsa 10 med ett nytt infodringsskikt 2, varpa den beskrivna arbetsgangen Ater 'tan begynna. De uttagna hylsorna kunna oberoende av gjutanordningen pa nytt f8rses med infodringsskikten 2. When the mold is opened and when the counter mandrel 11 has been removed, a bar sleeve 10 with a sprayed layer 2 can be pushed onto the mandrel 9. By joining the mold halves 4, 5 in their drawn working position and lowering the counter mandrel 11, the mold is closed and then the workpiece is cast by inserting liquid metal in the mold cavity 6. After solidification of the cast lath metal, the mandrels 8, 9 and 11 are pressed together from the drawn layer and downwards, whereby the sleeve -10 is pushed out of the casting piece, while the lining layer 2 associated therewith remains in the casting piece. The counter-mandrel 11 is now raised again and the foreman Oppnas said that the casting and avensa sleeve 10 can be removed. Instead of the removed sleeve 10, a new sleeve 10 was inserted with a new lining layer 2, whereupon the described procedure Ater 'tan begins. The removed sleeves can be re-supplied with the lining layers 2 independently of the casting device.
Den for pastickning av barhylsan i gjutverktyget avsedda delen, t. ex. dornen 9 vid utforingsexemplen enligt fig. 2, kan om sa erfordras vara utrustad med en genomstrommande kylning, vilken atgard sarskilt rekommenderas, nar barhylsor av material med lag smaltpunkt komma till anvandning. The part intended for pasting the bar sleeve in the casting tool, e.g. the mandrel 9 in the exemplary embodiments according to Fig. 2, may, if necessary, be equipped with a flow-through cooling, which action is especially recommended when bar sleeves of material with a low melting point are used.
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE189919T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE189919C1 true SE189919C1 (en) | 1964-01-01 |
Family
ID=38410833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE189919D SE189919C1 (en) |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE189919C1 (en) |
-
0
- SE SE189919D patent/SE189919C1/sv unknown
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