EP1111327A1 - Projectile et procédé pour la production de moyens de guidage dépassant radialement du projectile - Google Patents

Projectile et procédé pour la production de moyens de guidage dépassant radialement du projectile Download PDF

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Publication number
EP1111327A1
EP1111327A1 EP99811175A EP99811175A EP1111327A1 EP 1111327 A1 EP1111327 A1 EP 1111327A1 EP 99811175 A EP99811175 A EP 99811175A EP 99811175 A EP99811175 A EP 99811175A EP 1111327 A1 EP1111327 A1 EP 1111327A1
Authority
EP
European Patent Office
Prior art keywords
projectile
guide means
nickel
layer
base body
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.)
Withdrawn
Application number
EP99811175A
Other languages
German (de)
English (en)
Inventor
Kurt Dr.-Ing. Steinhoff
Matthias Dipl.-Ing. Schupfer
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.)
SM Schweizerische Munitionsunternehmung AG
Original Assignee
SM Schweizerische Munitionsunternehmung AG
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 SM Schweizerische Munitionsunternehmung AG filed Critical SM Schweizerische Munitionsunternehmung AG
Priority to EP99811175A priority Critical patent/EP1111327A1/fr
Priority to ES00982808T priority patent/ES2215766T3/es
Priority to EP00982808A priority patent/EP1240475B1/fr
Priority to AU19797/01A priority patent/AU1979701A/en
Priority to DE50005561T priority patent/DE50005561D1/de
Priority to PCT/CH2000/000676 priority patent/WO2001046641A1/fr
Publication of EP1111327A1 publication Critical patent/EP1111327A1/fr
Priority to NO20022941A priority patent/NO323281B1/no
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands

Definitions

  • the invention relates to a projectile with a projectile body and with radially projecting ones arranged on the projectile body Guide means for guiding the projectile body in a gun barrel, the invention further relates to a Process for the production of radially protruding guide means on a projectile body one in a gun barrel leading floor.
  • Known projectiles usually have one on the outer surface of the projectile body fastened guide means made of copper on. There are also floors with several at a defined distance mutually arranged guide means known. These are designed in the form of annular elevations. When a projectile body designed in this way is shot in a gun barrel, the inner surface of which several has spiral grooves, the elevations pressed and shaped, causing the projectile to rotate learns what to stabilize on his Trajectory is used. At the same time, the guide means to Sealing against those acting on the rear side of the projectile are called powder gases and as friction-reducing Intermediate layer between the projectile body and the gun barrel.
  • a disadvantage of the known projectiles is that they are be able to insert copper into the gun barrel when fired. This ultimately leads to embrittlement of the gun barrel and results in a reduction in its mechanical Strength. According to one of various initial conditions dependent number of kills is the gun barrel unusable. The entry of copper is also into the system environment, especially with ammunition which is intended for exercise purposes.
  • the invention is therefore based on the problem of a projectile of the type mentioned at the outset so that it when it was shot, an entry of copper into the gun barrel and largely avoiding its surroundings.
  • the invention is based on the problem of a method for To further develop the manufacture of radially protruding guide means that there is optimal adhesion of the guide means on the projectile body, the transition zone can be optimized or minimized between the two parts should be. Extremely high temperature and Gas pressure loads on the guide means can occur without this failure.
  • the aforementioned problems are thereby solved solved that at least the radially outer region of the guide means Contains nickel.
  • the copper content can be at least in the area touching the gun barrel when fired reduce the projectile body almost arbitrarily. Thereby can detach the copper from the guide means can be reliably prevented.
  • the floor according to the invention thereby largely prevents it from being fired an entry of copper into the gun barrel and its surroundings.
  • Soiling and / or a reduction in wear resistance the inner surface of the gun barrel by reducing its strength and embrittlement, due to metallurgical interactions between the materials can thus be reliably avoided.
  • the guiding means can be according to another advantageous one Further development of the invention is particularly inexpensive manufacture if the radially outer area of the guide means as nickel attached to a base body containing layer is designed.
  • the projectile body has one in the area of the guide means particularly high stability when the material of the base body is a tempering steel or a maraging steel.
  • connection of the nickel-containing layer with the Base body can be according to another advantageous Developing the invention in a particularly cost-effective manner, if the guide means integrally with the base body are connected.
  • the welding process is particularly suitable for the integral connection.
  • the nickel-containing layer could, for example, on be applied to a guide tape.
  • the leader band could then like the known floor with be connected to the projectile body. To reduce the It bears the manufacturing costs of the projectile according to the invention however, when the guide means are directly on the projectile body are arranged.
  • the guide means is a special one have high resistance if they contain nickel of over 90%.
  • the second problem namely the creation of the entrance mentioned method for producing radially protruding Management means in such a way that the Simply prevent copper from entering the gun barrel can be solved according to the invention by at least one single-layer application of a layer containing nickel a basic body.
  • This design allows a copper portion of the radial outer area of the guide means to an intended, Limit tolerable measure or completely prevent it. Because the radially outer area of the guide means touching the gun barrel when fired can result in a transmission of copper from the guide means to the gun barrel can be reliably prevented, even if the projectile body Contains copper. The projectile according to the invention prevented thereby largely one when it was shot down Entry of copper into the gun barrel. An embrittlement the gun barrel is thereby reliably avoided.
  • the main body can optionally be the projectile body itself or a guide band to be connected to the projectile body his.
  • the manufacture of the guide means according to the invention is designed itself particularly inexpensive when the order of Layer containing nickel in the deposition welding process he follows. Furthermore, the guide means can thereby be special have large dimensions.
  • Adverse changes in the metallic structure or Cracks and micro voids in the connection of the nickel containing Layer with the usually made of a steel alloy manufactured basic body can be according to a other advantageous development of the invention largely avoided if the base body after the build-up welding process at 815 ° C for one hour to three hours exposed to an inert gas atmosphere for a long time.
  • the base body After the build-up welding process at 815 ° C for one hour to three hours exposed to an inert gas atmosphere for a long time.
  • the structure of the The material of the base body can be homogenized at the same time.
  • the guiding means can be sheared off during the launch avoiding the bullet reliably.
  • Argon is particularly suitable as the protective gas.
  • Foreseen tolerances of the guide means can be according to a further advantageous development simple comply if the nickel-containing layer after Deposition welding to the intended dimensions is processed. This machining can, for example done in the turning process.
  • Figure 1 shows subareas of a floor 1, thereby Figure la shows a first portion with a guide means 2 in its configuration before the launch in the direction A from a gun barrel, not shown, with a spiraling inner contour.
  • the guide means 2 consists of high-purity nickel and is in a circumferential Groove anchored in the projectile body 5 made of 42CrMo4 tempered steel.
  • the front part of floor 1 is notoriously known Designed wise; the firing direction is here with one Arrow characterized and labeled with A.
  • the base body 5 can also be used with the projectile body 1 connected steel ring to be made.
  • Figures 2 and 3 illustrate two process steps in the manufacture of the guide means 2.
  • the Base body 5 made of 42CrMo4 alloy steel tube or Maraging steel made. This base body 5 has, as in Figure 2 shown, a smooth outer surface and chamfers on its groove 7.
  • the base body 5 For removing welding stresses, cracks and micro voids the base body 5 after the generation of the circumferential welding layer 6 fed to a heat treatment.
  • the base body 5 is also Layer 6 first at 815 ° C in an argon atmosphere warmed and this temperature between one hour and three Held for hours. After a slow cooling to room temperature and then reheating the Base body 5 heated to 480 ° C and this temperature between held for another three to six hours. After a layer 6 has the last cooling to room temperature and the base body 5 has a homogeneous structure.
  • the processing of the welding layer 6 takes place in a notorious manner known manner by machining on the given over-caliber measure.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arc Welding In General (AREA)
  • Microwave Tubes (AREA)
EP99811175A 1999-12-20 1999-12-20 Projectile et procédé pour la production de moyens de guidage dépassant radialement du projectile Withdrawn EP1111327A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP99811175A EP1111327A1 (fr) 1999-12-20 1999-12-20 Projectile et procédé pour la production de moyens de guidage dépassant radialement du projectile
ES00982808T ES2215766T3 (es) 1999-12-20 2000-12-20 Cuerpo de proyectil y procedimiento para la fabricacion de elementos de guia que sobresalen radialmente.
EP00982808A EP1240475B1 (fr) 1999-12-20 2000-12-20 Corps d'obus, et procede de realisation de moyens de guidage faisant saillie radialement
AU19797/01A AU1979701A (en) 1999-12-20 2000-12-20 Projectile body and a method for producing radially protruding driving means
DE50005561T DE50005561D1 (de) 1999-12-20 2000-12-20 Geschosskörper und verfahren zur herstellung von radial abstehenden führungsmitteln
PCT/CH2000/000676 WO2001046641A1 (fr) 1999-12-20 2000-12-20 Corps d'obus, et procede de realisation de moyens de guidage faisant saillie radialement
NO20022941A NO323281B1 (no) 1999-12-20 2002-06-19 Prosjektillegeme og en fremgangsmate for fremstilling av radielt fremstikkende drivinnretning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99811175A EP1111327A1 (fr) 1999-12-20 1999-12-20 Projectile et procédé pour la production de moyens de guidage dépassant radialement du projectile

Publications (1)

Publication Number Publication Date
EP1111327A1 true EP1111327A1 (fr) 2001-06-27

Family

ID=8243199

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99811175A Withdrawn EP1111327A1 (fr) 1999-12-20 1999-12-20 Projectile et procédé pour la production de moyens de guidage dépassant radialement du projectile
EP00982808A Expired - Lifetime EP1240475B1 (fr) 1999-12-20 2000-12-20 Corps d'obus, et procede de realisation de moyens de guidage faisant saillie radialement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00982808A Expired - Lifetime EP1240475B1 (fr) 1999-12-20 2000-12-20 Corps d'obus, et procede de realisation de moyens de guidage faisant saillie radialement

Country Status (6)

Country Link
EP (2) EP1111327A1 (fr)
AU (1) AU1979701A (fr)
DE (1) DE50005561D1 (fr)
ES (1) ES2215766T3 (fr)
NO (1) NO323281B1 (fr)
WO (1) WO2001046641A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE306405C (fr) *
FR5398E (fr) * 1904-04-20 1906-03-27 Krupp Ag Projectile en acier avec évidement rempli d'un métal à poids spécifique élevé
US2353693A (en) * 1942-09-28 1944-07-18 Joseph H Church Rotating band
US3888295A (en) * 1973-10-29 1975-06-10 David E Schillinger Method of bonding an annular band of material to an object
EP0392084A2 (fr) * 1989-04-08 1990-10-17 Rheinmetall GmbH Projectile

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813190A (en) * 1954-11-01 1957-11-12 Air Reduction Multiple arc welding
DE3539310A1 (de) * 1985-11-06 1987-05-07 Rheinmetall Gmbh Verfahren zum aufbringen eines metallischen fuehrungsbandes auf eine geschosshuelle insbesondere geringer wandstaerke sowie nach diesem verfahren hergestellte geschosshuelle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE306405C (fr) *
FR5398E (fr) * 1904-04-20 1906-03-27 Krupp Ag Projectile en acier avec évidement rempli d'un métal à poids spécifique élevé
US2353693A (en) * 1942-09-28 1944-07-18 Joseph H Church Rotating band
US3888295A (en) * 1973-10-29 1975-06-10 David E Schillinger Method of bonding an annular band of material to an object
EP0392084A2 (fr) * 1989-04-08 1990-10-17 Rheinmetall GmbH Projectile

Also Published As

Publication number Publication date
NO20022941L (no) 2002-06-20
AU1979701A (en) 2001-07-03
EP1240475A1 (fr) 2002-09-18
NO20022941D0 (no) 2002-06-19
WO2001046641A1 (fr) 2001-06-28
EP1240475B1 (fr) 2004-03-03
NO323281B1 (no) 2007-02-26
ES2215766T3 (es) 2004-10-16
DE50005561D1 (de) 2004-04-08

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