EP0852525B1 - Verfahren zum herstellen grosser ringförmiger werkstücke - Google Patents

Verfahren zum herstellen grosser ringförmiger werkstücke Download PDF

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Publication number
EP0852525B1
EP0852525B1 EP96934481A EP96934481A EP0852525B1 EP 0852525 B1 EP0852525 B1 EP 0852525B1 EP 96934481 A EP96934481 A EP 96934481A EP 96934481 A EP96934481 A EP 96934481A EP 0852525 B1 EP0852525 B1 EP 0852525B1
Authority
EP
European Patent Office
Prior art keywords
blank
hot
hip
ring
produced
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 - Lifetime
Application number
EP96934481A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0852525A1 (de
Inventor
Werner Plagemann
Wolfgang Schütze
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.)
Maschinenfabrik Koeppern GmbH and Co KG
Original Assignee
Maschinenfabrik Koeppern GmbH and Co KG
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 Maschinenfabrik Koeppern GmbH and Co KG filed Critical Maschinenfabrik Koeppern GmbH and Co KG
Publication of EP0852525A1 publication Critical patent/EP0852525A1/de
Application granted granted Critical
Publication of EP0852525B1 publication Critical patent/EP0852525B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Definitions

  • the invention relates to a method for manufacturing large ring-shaped workpieces, especially ring bandages for wear-resistant press rolls, through a hot isostatic Pressing process.
  • the for the hot isostatic pressing process usable materials have very good Wear properties, which is why manufactured Ring bandages should preferably be used.
  • hot isostatic presses take place at high pressure and high temperature, as evenly as possible on the whole Workpiece to be applied, so that for it suitable devices (HIP systems) strong in size are limited.
  • the field of application of such bandages should also, however on briquetting, compacting, Material bed shredding, grinders and numerous others Allow proceedings to be extended. This is from economic However, often cause larger bandage diameters required.
  • the object of the present invention To provide methods of the type mentioned at the outset the ring-shaped workpieces are made with dimensions can be above the largest possible through the HIP system dimensions to be produced.
  • the HIP method is used instead manufactured ring blank without capsule, sleeve or the like processed further.
  • a compression of the according to US-A-3982904 in the sleeve filled powder in a subsequent Molding process is therefore in no way according to the invention provided because with a finished blank according to the HIP process is worked.
  • the ring blank After hot isostatic pressing, the ring blank still shows a very good plasticity for a subsequent one Thermoforming can be used in an advantageous manner. This can be done relatively inexpensively through the thermoforming process other dimensions or profiles than those of the HIP system specified, manufactured. Thus, the through the HIP system specified dimensional limits of the annular workpieces overcome relatively inexpensive become. This plays a role even with smaller dimensions decisive role, since HIP systems are very complex and are expensive. For some HIP materials, the Thermoforming process also a structural improvement for Episode. Conveniently, the blank can have a diameter be enlarged, because this is the ring bandages corresponding cost advantages result.
  • Enlargements can be achieved by the invention in the range from greater than 1: 1 to 3: 1, preferably greater than 1: 1 to 2: 1.
  • a HIP system can produce the bandages with a diameter of 1 m that a Can be expanded to a diameter of 2.
  • a such drastic enlargement of the blank increases the Application of the ring bandages by a considerable amount.
  • the blank is in essentially made entirely from a HIP material.
  • the blank provides enough material ready to the necessary dimensions after the thermoforming Obtain ring bandage.
  • Another embodiment provides that the blank from a HIP material applied to a suitable base material is produced, the base material with respect of the thermoforming process matched to the HIP material Has properties.
  • the base material Steel in question comes as the base material Steel in question. It is important that the material Features that are not in the thermoforming process Detaching the HIP layer from this leads. These circumstances can of course also by appropriate thermoforming conditions be counteracted. However, the decisive factors are essential the properties of the materials.
  • the materials can also be coordinated with each other so that the The thermoforming process of the composite is retained.
  • thermoforming process An easy way to do the thermoforming process is that the blank during the thermoforming process by forging over a mandrel and / or expanding over one Cone is enlarged. This embodiment is suitable especially in the manufacture of smaller dimensions.
  • thermoforming process can be used to produce larger dimensions conveniently done by ring rolling.
  • Ring rolling may also be required
  • Profiling of the annular workpiece can be generated. A such profiling depends on the particular application the ring bandage.
  • thermoforming process can be carried out Rolling the face of the blank is done what has the particular advantage that also in Axial direction of the annular workpiece different HIP or HIP and base materials bonded together can be.
  • the invention relates to a ring bandage for press rolls by a method according to one of the Claims 1 to 11 is made.
  • the final diameter is larger than the largest due to the HIP system diameter of a blank to be produced.
  • the invention thus provides a very economical method Production of ring-shaped work pieces of larger dimensions ready.
  • the blank 1 shows an annular blank 1 and an annular bandage 2 made from it.
  • the blank 1 has an outer diameter D R and an inner diameter d R and consists of a single HIP material.
  • the blank 1 is produced by hot isostatic pressing using high pressure and high temperatures in a HIP system (not shown).
  • the currently The largest possible diameter D R of ring-shaped workpieces is approximately 1.2 m.
  • the bandage 2 has an outer diameter D B and an inner diameter d B.
  • the enlargement of the diameter from blank 1 to bandage 2 in this embodiment is approximately 1.7: 1.
  • the blank 1 has correspondingly thicker wall thicknesses so that the correspondingly required wall thickness is achieved with the bandage 2.
  • the amount of HIP material required essentially depends on the volume ratios.
  • the schematic device for thermoforming shown in FIG. 2 comprises a driven main roll 3, which is seated on the outer periphery 4 of the blank and a roller mandrel 6 pressed onto the inner periphery 5 of the blank 1.
  • axial rollers 7 are provided to maintain the axial dimensions of the blank 1.
  • the main roll 3 has a diameter d H and the roll mandrel has a diameter d W.
  • the degree of rolling on the inner and outer circumference 5.4 can be influenced by the selection of suitable diameters d H and d W , whereby the deformation on the outer and inner circumference 4.5 is optimized accordingly.
  • the ratio of the diameter between the main roll 3 and the mandrel 6 also plays an important role here.
  • the blank 1 as can be seen in FIG. 2, continuously from the hot forming tool to the dimensions of the Ring bandage 2 rolled. Due to the relatively plastic HIP material, which approximates during this forming process Forging temperature is a ring bandage 2 of good structure and precise dimensions.
  • FIG. 3 shows a blank 1 and a ring bandage 2, the two different HIP materials 8 and 9, the are arranged in a ring adjacent to each other, is constructed.
  • the materials 8, 9 are by hot isostatic presses for further processing favorable dimensional arrangement has been brought.
  • the two HIP materials 8, 9 are coordinated so that e.g. a Advancing the outer material 8 during the Thermoforming process and thus a loosening of the two materials 8, 9 from each other does not take place.
  • the device shown in FIG. 2 is particularly suitable.
  • By matching the diameter of the main roller 3 and Rolling mandrel 6 one another can use both materials 8, 9 different degree of rolling are deformed.
  • the final thickness of the layers of materials 8, 9 must already be taken into account for blank 1.
  • FIG. 4 shows a further embodiment of a ring bandage 2 shown, which has a profile.
  • the blank 1 can have a corresponding preform, from which then Thermoforming shaped to the dimensions of the ring bandage 2 becomes.
  • the main roller 3 and the mandrel 6 also have appropriate profiling. Thus, the different profiles on the outer and inner circumference 4, 5 are generated, the most diverse applications benefit.
  • FIG. 5 shows a blank 1 and an annular bandage, in which two materials are arranged axially one behind the other.
  • the thermoforming process can accordingly by mainly axial rolling along the End faces.
  • bandages are e.g. for briquetting presses, Compacting machines, machines for material bed shredding, for Mills and numerous other applications are used.
  • the bandages 2 with special Properties for a wide variety of applications be executed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forging (AREA)
EP96934481A 1995-09-29 1996-09-27 Verfahren zum herstellen grosser ringförmiger werkstücke Expired - Lifetime EP0852525B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19536507 1995-09-29
DE19536507A DE19536507A1 (de) 1995-09-29 1995-09-29 Verfahren zum Herstellen großer ringförmiger Werkstücke
PCT/EP1996/004237 WO1997012710A1 (de) 1995-09-29 1996-09-27 Verfahren zum herstellen grosser ringförmiger werkstücke

Publications (2)

Publication Number Publication Date
EP0852525A1 EP0852525A1 (de) 1998-07-15
EP0852525B1 true EP0852525B1 (de) 1999-12-29

Family

ID=7773699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934481A Expired - Lifetime EP0852525B1 (de) 1995-09-29 1996-09-27 Verfahren zum herstellen grosser ringförmiger werkstücke

Country Status (5)

Country Link
EP (1) EP0852525B1 (ja)
JP (1) JP3150705B2 (ja)
AU (1) AU7282196A (ja)
DE (2) DE19536507A1 (ja)
WO (1) WO1997012710A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6315945B1 (en) 1997-07-16 2001-11-13 The Dow Chemical Company Method to form dense complex shaped articles
FR2952558A1 (fr) * 2009-11-19 2011-05-20 Creusot Forge Procede de fabrication d'une piece metallique tubulaire
CN106623704A (zh) * 2016-12-01 2017-05-10 贵州安大航空锻造有限责任公司 低应力2a70铝合金环件制造方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010010321A1 (de) 2010-03-04 2011-09-08 Carl Aug. Picard Gmbh & Co. Kg Heißisostatisch gepresster Verbundkörper, Verfahren zu seiner Herstellung sowie dessen Verwendung
CN104191166B (zh) * 2014-08-04 2016-08-24 贵州航宇科技发展股份有限公司 一种铝合金高筒薄壁环件的轧制成形方法
DE102015111093B4 (de) * 2015-07-09 2020-04-23 Benteler Steel/Tube Gmbh Rund- oder Mehrkantblock zur Herstellung eines nahtlosen warmgewalzten Rohrprodukts, Rohrprodukt sowie Verfahren zur Herstellung eines Rohrprodukts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982904A (en) * 1973-06-27 1976-09-28 Viking Metallurgical Corporation Metal rings made by the method of particle ring-rolling
JPH02310303A (ja) * 1989-05-25 1990-12-26 Sumitomo Metal Ind Ltd 継目無管の製造方法
FR2687337B1 (fr) * 1992-02-13 1994-04-08 Valtubes Procede de realisation de tubes par travail a chaud de poudres metalliques et tubes ainsi obtenus.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6315945B1 (en) 1997-07-16 2001-11-13 The Dow Chemical Company Method to form dense complex shaped articles
FR2952558A1 (fr) * 2009-11-19 2011-05-20 Creusot Forge Procede de fabrication d'une piece metallique tubulaire
WO2011061444A3 (fr) * 2009-11-19 2011-08-18 Creusot Forge Procédé de fabrication d'une pièce métallique tubulaire
CN106623704A (zh) * 2016-12-01 2017-05-10 贵州安大航空锻造有限责任公司 低应力2a70铝合金环件制造方法

Also Published As

Publication number Publication date
JP3150705B2 (ja) 2001-03-26
WO1997012710A1 (de) 1997-04-10
AU7282196A (en) 1997-04-28
JPH11500493A (ja) 1999-01-12
EP0852525A1 (de) 1998-07-15
DE19536507A1 (de) 1997-04-03
DE59604060D1 (de) 2000-02-03

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