CS242177B1 - Method of shaped components production from aluminium bronze powder - Google Patents
Method of shaped components production from aluminium bronze powder Download PDFInfo
- Publication number
- CS242177B1 CS242177B1 CS847148A CS714884A CS242177B1 CS 242177 B1 CS242177 B1 CS 242177B1 CS 847148 A CS847148 A CS 847148A CS 714884 A CS714884 A CS 714884A CS 242177 B1 CS242177 B1 CS 242177B1
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- Czechoslovakia
- Prior art keywords
- powder
- crushing
- bronze powder
- density
- temperature
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 239000000843 powder Substances 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 239000007791 liquid phase Substances 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 238000000137 annealing Methods 0.000 claims abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000007792 addition Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 229910000906 Bronze Inorganic materials 0.000 abstract description 4
- 239000010974 bronze Substances 0.000 abstract description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005242 forging Methods 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
Vynález sa týká spůsobu výroby tvarových súčiastok z hliníkového bronzu, najma výroby činných častí tvárniacich nástrojov pre tvárnenie nehrdzavejúcich ocelí. Podstatou vynálezu je, že z odlievaného základného materiálu sa mletím alebo drvením připraví prášok o zrnitosti 0,04 až 0,1 mm, ktorý sa za studená zlisuje na polotovar alebo výlisok hustoty 75 až 80 % a následné dlhodobo žíhá bez přítomnosti tekutej fázy v ochrannom prostředí pri teplote 530 až 570 °C a potom kováním v uzavretej zápustke z teploty 850 až 950 °C dokončí na výsledný tvar so stupňom zhutnenia 98 až 100 %.BACKGROUND OF THE INVENTION The present invention relates to a method for producing shaped articles parts made of aluminum bronze, especially production active parts of forming tools for Forming of stainless steels. The essence of the invention is that of casting of the base material by milling or crushing to prepare a powder of 0.04 to 0.1 mm, which is cold pressed into a blank or a density density of 75 to 80% a subsequent annealing without the presence of liquid phase in a protective environment at temperature 530 to 570 ° C and then closed forging die from 850 to 950 ° C to the final shape with the degree of compaction 98 up to 100%.
Description
Vynález sa týká spósobu výroby tvarových súčiastok z prášku hliníkových bronzov.The invention relates to a method for producing molded parts from aluminum bronze powder.
Hliníkové bronzy s převážným obsahom médi sa používajú na súčiastky s dobrými vlastnosťami v konstrukčněj praxi a tiež na výrobu vložiek činných častí tvárniacich nástrojov, hlavně pri spracovaní nehrdzavejúcich ocelí.Aluminum bronzes with a predominant medium content are used for components with good properties in construction practice and also for the production of inserts of active parts of forming tools, especially in the processing of stainless steels.
V súčasnosti sa výroba tvarových súčiastok z hliníkových bronzov realizuje cez kvapalnú fázu napr. podl'a AO 235 600, kde sa získali výrobky po materiálnej stránke velmi kvalitně. Ukázalo sa však potřebné ďalšie trieskové opracovanie, čo má za následok zhoršenie povodných mechanických vlastností. Ako nevýhoda sa prejavila aj náročná výroba přesných tvarových foriem.At present, the production of aluminum bronze shaped parts is realized through the liquid phase e.g. according to AO 235 600, where the material quality of the products was obtained. However, further chip machining has been shown to result in deterioration of the flood mechanical properties. Another disadvantage was the demanding production of precise molds.
Výroba tvarových súčiastok v spojení so súčasnou výrobou hliníkových bronzov práškovou metalurgiou vykazuje sice výhody spojené so značným znížením nákladov na přípravu a ďalšie spracovávanie materiálu, získaného cez kvapalnú fázu a získali sa výrobky s vysokou chemickou a štruktúrnou homogenitou bez přítomnosti dutin a pórov, so značné zlepšenými mechanickými vlastnosťami. Ako nevýhoda sa ukázala zase nutnost ďalšieho opracovávania alebo následnej plastickej deformácie.The production of shaped parts in conjunction with the current production of aluminum bronze powder metallurgy shows the advantages associated with a considerable reduction in the cost of preparing and further processing the material obtained through the liquid phase and obtaining products with high chemical and structural homogeneity without the presence of cavities and pores. mechanical properties. Again, the need for further processing or subsequent plastic deformation proved to be a disadvantage.
Tieto nedostatky v značnej miere odstraňuje sposob výroby tvarových súčiastok podlá vynálezu, ktorého podstatou je, že z odlievaného základného materiálu sa mletím alebo drvením zhotoví prášok o zrnitosti 0,04 až 0,1 mm, ktorý sa zlisuje za studená pri tlakoch 1100 až 1200 MPa na polotovar alebo’ výlisok hustoty 75 až 80 % a následné žíhá bez přítomnosti tekutej fázy v ochrannom prostředí po dobu 15 až 20 hodin pri teplote 530 až 570 °C a potom v uzavretej zápustke za teploty v intervale 850 až 950 °C kuje na výsledný tvar s prídavkami od 0,2 až 0,5 mm na rozměr na hustotu zhutnenia 98 až 100 °/o.These drawbacks are largely eliminated by the inventive process for producing molded parts, which consists in producing a powder of 0.04 to 0.1 mm, which is cold pressed at 1100 to 1200 MPa, from the cast base material by grinding or crushing. to a blank or density of 75-80% and subsequently calcined in the absence of a liquid phase in the protective environment for 15-20 hours at 530-570 ° C and then closed in a closed die at 850-950 ° C for the resulting shape with additions from 0,2 to 0,5 mm per dimension to a packing density of 98 to 100 ° / o.
Výhodou spósobu výroby tvarových súčiastok podl'a vynálezu je vysoká štrukturálna homogenita, kde materiál je bez přítomnosti pórov a dutin. Ďalej je to možnost získat zložité tvary súčiastok, resp. častí tvárniacich nástrojov lepších mechanických vlastnosti s možnosťou ich ďalšieho tepelného spracovania.An advantage of the method of making the shaped parts of the invention is the high structural homogeneity where the material is free of pores and voids. Furthermore, it is possible to obtain complex shapes of components, respectively. parts of forming tools with better mechanical properties with the possibility of their further heat treatment.
Vyšší účinok je vo zvýšení produktivity práce v súvislosti s výrobou súčiastok a to rádovo vyššie než to umožňujú doteraz používané technologické postupy. Metóda vedie k vysokému využitiu materiálu.The higher effect is in the increase of labor productivity in connection with the production of components, which is in the order of magnitude higher than the technological procedures used so far. The method leads to high material utilization.
Uvedeným spůsobom boli vyrobené tažné trne pre výrobu rúr z nehrdzavejúcej ocele, kde nástrojový bronz o chemickom zložení 14 % AI, 0,5 % Si, 0,4 % Cr, 0,1 % B, 0,1 % C, 0,8 % Fe, 0,5 % Ti, 0,5 % Co a 2 % Mn, připravený spósobom podl'a AO 235 600 z kvapalnej fázy bol následné drobený a mletý v prúdovom mlýne na prášok o zrnitosti 0,04 ,až ,0,6 mm. Po zlisovaní takto získaného prášku pri tlaku 1200 MPa v hydrostatickom prostředí sa získal polotovar pre kovanie o hustotě 78 %. Získané výrobky sa ďalej dlhodobe žíhali v troch stupňoch po dobu 6 až 8 hod. v ochrannom prostředí pri teplote 550 °C. Požadovaný tvar o priemere 20 nim a výške 20 mm ako aj požadované zhutnenie bolo dosiahnuté zápustkovým kováním z teploty 900 °C. Výsledky šetření potvrdili předpokládané výhodné vlastnosti súčiastky, pričom ku zmene tvrdosti Al-bronzu nedošlo. Výsledná tvrdosť , bola 400 HV.In this way, tensile mandrels were produced for the manufacture of stainless steel tubes, where a tool bronze with a chemical composition of 14% Al, 0.5% Si, 0.4% Cr, 0.1% B, 0.1% C, 0.8 % Fe, 0.5% Ti, 0.5% Co and 2% Mn, prepared according to AO 235 600 from the liquid phase, were then crumbled and milled in a jet mill to a particle size of 0.04 to 0, 6 mm. After pressing the thus obtained powder at a pressure of 1200 MPa in a hydrostatic medium, a forging blank having a density of 78% was obtained. The obtained products were further annealed in three stages for 6 to 8 hours. in a protective environment at a temperature of 550 ° C. The required shape with a diameter of 20 µm and a height of 20 mm as well as the required compaction was achieved by die forging from a temperature of 900 ° C. The results of the investigation confirmed the expected advantageous properties of the component, while the Al-bronze hardness did not change. The resulting hardness was 400 HV.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS847148A CS242177B1 (en) | 1984-09-24 | 1984-09-24 | Method of shaped components production from aluminium bronze powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CS847148A CS242177B1 (en) | 1984-09-24 | 1984-09-24 | Method of shaped components production from aluminium bronze powder |
Publications (2)
Publication Number | Publication Date |
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CS714884A1 CS714884A1 (en) | 1985-08-15 |
CS242177B1 true CS242177B1 (en) | 1986-04-17 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CS847148A CS242177B1 (en) | 1984-09-24 | 1984-09-24 | Method of shaped components production from aluminium bronze powder |
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CS (1) | CS242177B1 (en) |
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1984
- 1984-09-24 CS CS847148A patent/CS242177B1/en unknown
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CS714884A1 (en) | 1985-08-15 |
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