DE836566C - Process for the production of sintered bodies from metal powder - Google Patents

Process for the production of sintered bodies from metal powder

Info

Publication number
DE836566C
DE836566C DEP31788A DEP0031788A DE836566C DE 836566 C DE836566 C DE 836566C DE P31788 A DEP31788 A DE P31788A DE P0031788 A DEP0031788 A DE P0031788A DE 836566 C DE836566 C DE 836566C
Authority
DE
Germany
Prior art keywords
powder
metal powder
compacts
production
metal
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEP31788A
Other languages
German (de)
Inventor
August Coenders
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEP31788A priority Critical patent/DE836566C/en
Application granted granted Critical
Publication of DE836566C publication Critical patent/DE836566C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Description

Verfahren zur Herstellung von Sinterkörpern aus Metallpulver Verfahren zur I lerstellung von gesinterten Preß- lingen aus -\letalll)ulver sind bekannt. Diese be- kannten \-crfalire» versagen aber, wenn es sich um I'reßlinge handelt, die aus einem Metallpulver be- stehen, clessc#n h:ntziindungstemperatur gleich oder unter der Sintert'eniperatur liegt. Ebenfallsversagen (iie l@;l:a»nten Verfahren bei -:inem Metallpulver, welches aus tnelireren Metallen besteht, die bei der Sinterteniperatur an den Grenzflächen aufeinander r,agiere» und infolge (ler auftretenden Verbin- @lungsw:irmein_ derartige Temperaturerhöhung erfahren, ila13 es an den Grenzflächen zur Bildung vorn @letall(liiml)fen kommt und der Preßling explo- sivartig zc@rf"illt oder der Preßling nach (lern Sin- tern eine unförmige, aufgeblähte, schaumige Masse darstellt. Vorliegendes Verfahren beseitigt diese l`1 mlst:indc. Die auf die übliche V1'eise hergestellten Preßlinge werden zu ihrer Sinterung in einem Behälter, dessen Werkstoff einen möglichst geringen Wärmedehnungskoeffizienten besitzt, lagenweise in ein dem Metall der Preßlinge gegenüber indifferentes Pulver eingebettet undfestgepreßt. Dergeschlossene Behälter wird nun samt den Preßlingen auf Sint:ertempe.ratur gebracht. Nach dem Erkalten können die Preßlinge. welchü ein völlig homogenes Gefüge aufweisen, herausgenommen werden.Process for the production of sintered bodies from metal powder Process for the production of sintered press lingen from - \ letalll) ulver are known. These are knew \ -crfalire »but fail when it comes to I am dealing with pellets made from a metal powder stand, clessc # nh: ignition temperature equal to or is below the sintered temperature. Failure too (iie l @; l: the same procedure for -: in a metal powder, which consists of more substantial metals, which in the Sintered temperature at the interfaces on each other r, act »and as a result of @lungsw: irmein_ such a temperature increase experienced, ila13 it at the interfaces with education in front @letall (liiml) fen comes and the pressed part explodes sivartig zc @ rf "illt or the pressed part after (learn Sin- tern a misshapen, bloated, foamy mass represents. This procedure eliminates this l`1 mlst: indc. For sintering, the compacts produced in the usual way are embedded in layers in a powder that is indifferent to the metal of the compacts in a container, the material of which has the lowest possible coefficient of thermal expansion, and pressed firmly. The closed container, together with the pressed items, is now brought to temperature. After cooling, the pellets can. which have a completely homogeneous structure, can be removed.

Besteht das Metallpulver aus Metallen, die sich schwierig miteinander verschweißen, so ist @@s erforderlich. während des Sinterns einen allseitigen Druck auf den Preßling auszuüben. Dieses wird erreicht, indem zwischen den einzelnen Preßlingen Körper oder zwischen den einzelnen Lagen Platten, die aus einem Werkstoff mit großem Wärme- ,iusdehnunrsl:oeffizietttcn bestehen, eitigel>ettet wer- den. Diese Körper oder Platten üben infolge ihrer Wärmedehnung einen Druck auf das Einbettungs- htilver und somit auch auf die bei der Sinter- temperatur weich werdenden Preßlinge aus. If the metal powder consists of metals that are difficult to weld together, @@ s is required. to exert pressure on all sides of the compact during sintering. This is achieved by placing bodies between the individual compacts or between the individual layers of plates made of a material with a high level of heat. , iusdehnunrsl: oeffizietttcn exist, eitigel> ettbe the. These bodies or plates exercise as a result of them Thermal expansion puts pressure on the embedding htilver and thus also on the sintering temperature softening compacts from.

Claims (1)

PATENTANSPRÜCHE: t. Verfahren zur Herstellung von Sinter- ans Metallpulver, dadurch gekenn- zeichnet. da(9 die Metallpulver .zu Preßlingen gefo>rnit. die so erlialttnen Preßlinge in ein dem Metall der Preßlinge gegenüber indifferentes Pulver eingebettet und festgel)reßt,tuid darauf der Sintertemperatur ausgesetzt Nverden. 2. Verfahren nach Anspruch i, dadurch ge- kcntizeiclitiet, daß zusammen reit den Preß-
liegen Platten oder ähnliche Körper aus einem Werkstoff mit hohem \%'ärineausclelitiutigskoeffi- zienten in das indifferente Pulver ;#ingehettet werden.
Angezogene Druckschriften: Deutsche Patentschrift N r. 729 165; USA.-Patentscliriften \'r. 1o1 863, 2 089 030; S k a u p y : »-,l\-letall Keramik«, 19+3, S. t7-2; K i e f f e r - S t o 1 o p : »Pulvermetallurgie und Sinterwerkstoffe«, 1948, S. 28,5; J o n e s : »Princil>l,es of Powcler Metallurgy«, London, 1937, S. 921>is 9.t; Zeitschrift phys. Chemie :\ 169 (193-1), S. 91 bi S 102; Zeitschrift f. Metallkunde, 1029, S. 2t/22.
PATENT CLAIMS: t. Process for the production of sintered to the metal powder, thus identifiable draws. there (9 the metal powder. to compacts frozen with. the compacts obtained in this way in one Metal of the compacts indifferent to it Powder embedded and gel) tears, put on it exposed to the sintering temperature Nverden. 2. The method according to claim i, characterized in that kcntizeiclitiet that together rides the press
are plates or similar bodies from one Material with a high exclusive coefficient cient in the indifferent powder; # embedded will.
Referred publications: German Patent No. 729 165; USA.-Patent Publication \ 'r. 1o1 863, 2,089,030; S kaupy: "-, l \ -letall Keramik", 19 + 3, p. T7-2; K ieffer - S to 1 op: »Powder metallurgy and Sinterwerkstoffe ”, 1948, p. 28.5; J ones: »Principle l, es of Powcler Metallurgy«, London, 1937, p. 921> is 9.t; Journal of phys. Chemistry: \ 169 (193-1), p. 91 to p 102; Metallkunde magazine, 1029, p. 2t / 22.
DEP31788A 1949-01-18 1949-01-18 Process for the production of sintered bodies from metal powder Expired DE836566C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP31788A DE836566C (en) 1949-01-18 1949-01-18 Process for the production of sintered bodies from metal powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP31788A DE836566C (en) 1949-01-18 1949-01-18 Process for the production of sintered bodies from metal powder

Publications (1)

Publication Number Publication Date
DE836566C true DE836566C (en) 1952-04-15

Family

ID=7372453

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP31788A Expired DE836566C (en) 1949-01-18 1949-01-18 Process for the production of sintered bodies from metal powder

Country Status (1)

Country Link
DE (1) DE836566C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260709B (en) * 1961-11-29 1968-02-08 Siemens Ag Process for sintering pressed parts from two- or multi-component systems in the presence of a liquid phase
US3796566A (en) * 1972-06-26 1974-03-12 Aluminum Co Of America Prevention of bonding of aluminum powder metallurgy parts during sintering by separating the parts with oxidized particulate aluminum

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US101863A (en) * 1870-04-12 Improved composition of matter
US2089030A (en) * 1933-04-09 1937-08-03 Kratky Anton Method for the production of bodies of extreme hardness
DE728165C (en) * 1936-05-17 1942-11-21 Franz Sattler Process for the production of graphite-containing metal bodies

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US101863A (en) * 1870-04-12 Improved composition of matter
US2089030A (en) * 1933-04-09 1937-08-03 Kratky Anton Method for the production of bodies of extreme hardness
DE728165C (en) * 1936-05-17 1942-11-21 Franz Sattler Process for the production of graphite-containing metal bodies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260709B (en) * 1961-11-29 1968-02-08 Siemens Ag Process for sintering pressed parts from two- or multi-component systems in the presence of a liquid phase
US3796566A (en) * 1972-06-26 1974-03-12 Aluminum Co Of America Prevention of bonding of aluminum powder metallurgy parts during sintering by separating the parts with oxidized particulate aluminum

Similar Documents

Publication Publication Date Title
DE1483641C3 (en) Water-soluble salt cores
DE3519612C2 (en)
DE836566C (en) Process for the production of sintered bodies from metal powder
DE1924991B2 (en) WATER-SOLUBLE SALT CORN
DE748633C (en) Process for the production of hard alloys containing diamonds
DE2250495B2 (en) Process for the hot isostatic pressing of objects from a sintered steel sheet
DE2130066A1 (en) Method and device for cooling hot briquettes
DE888137C (en) Process for the manufacture of ignition pins for discharge vessels
DE533240C (en) Printing process for decorating pressed bodies
DE847571C (en) Composite body made of ceramic and metallic components
DE498443C (en) Process for the manufacture of electrodes for electric ovens
DE340583C (en) Process for the pretreatment of ores u. Like., In particular of iron ores, for sintering by blowing while eating with water
DE2154479A1 (en) Method and device for the simultaneous production of several compacted silicon nitride molded bodies by means of hot pressing
AT77329B (en) Process for the production of compact bodies from pure iron or pure iron alloys.
DE355982C (en) Process for the production of cavities in artificial mineral teeth by means of cores
DE669481C (en) Process for briquetting hard coal
DE625807C (en) Process for the production of objects from silicate masses
DE87132C (en)
DE214467C (en)
DE505263C (en) Device for pressing coal cake
AT212029B (en) Process for the production of composite bodies consisting of cast aluminum and sintered aluminum
DE2140762A1 (en) Process for the production of sintered bodies from boron nitride
DE460498C (en) Process for the production of semi-finished products from celluloid or celluloid-like masses
CH139065A (en) Process to bring a substance into a body of a predictable shape and size.
DE852365C (en) Process for producing ceramic bodies