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SU596306A1 - Piercing mill mandrel - Google Patents

Piercing mill mandrel

Info

Publication number
SU596306A1
SU596306A1 SU772449637A SU2449637A SU596306A1 SU 596306 A1 SU596306 A1 SU 596306A1 SU 772449637 A SU772449637 A SU 772449637A SU 2449637 A SU2449637 A SU 2449637A SU 596306 A1 SU596306 A1 SU 596306A1
Authority
SU
USSR - Soviet Union
Prior art keywords
mandrel
piercing mill
mill mandrel
cone
piercing
Prior art date
Application number
SU772449637A
Other languages
Russian (ru)
Inventor
Иван Николаевич Потапов
Александр Павлович Коликов
Станислав Александрович Козерадский
Александр Алексеевич Снегирев
Александр Григорьевич Лунев
Владимир Васильевич Рябченко
Владимир Иванович Байраков
Александр Иванович Аникеев
Вячеслав Николаевич Аникин
Валентин Иванович Жаворонков
Аркадий Михайлович Уманский
Леонид Вениаминович Бройдо
Original Assignee
Московский Ордена Трудового Краснго Знамени Институт Стали И Сплавов
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 Московский Ордена Трудового Краснго Знамени Институт Стали И Сплавов filed Critical Московский Ордена Трудового Краснго Знамени Институт Стали И Сплавов
Priority to SU772449637A priority Critical patent/SU596306A1/en
Application granted granted Critical
Publication of SU596306A1 publication Critical patent/SU596306A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Description

1one

Изобретение относитс  к области трубопрокатного производства и может быть использовано при прошивке в ваакууме трубных заготовок из тугоплавких металлов и сплавов на их основе.The invention relates to the field of pipe production and can be used for flashing tubular billets of refractory metals and alloys based on them in vacuum.

Известна оправка дл  прошивки при температуре 12ОО-125О°, полученна  отливкой из кобальтового сплава и наконечника из сплава никел  i.A known mandrel for piercing at a temperature of 12OO-125O °, obtained by casting from a cobalt alloy and a tip from an alloy of nickel i.

Така  оправка в услови х указанных температур позвол ет снизить износ инструмента .Such a mandrel under the conditions of these temperatures can reduce tool wear.

Известна оправка прошивного стана, рабоча  часть которой выполнена из вольфрамомедного псевдосплава с содержанием W 75-85% 2 . Жаропрочность вольфра 1овой основы обеспечивает высокую стойкость инструмента, а наличие меди снижае коэффициент трени  между инструментом и гнльзой.Known mandrel piercing mill, the working part of which is made of tungsten-copper pseudo-alloy with a content of W 75-85% 2. The heat resistance of tungsten base 1 provides a high tool life, and the presence of copper reduces the coefficient of friction between the tool and gnlja.

Известна также оправка прошивного стана , включающа  рабочую поверхность, составленную из рабочего конуса, конуса поперечной раскатки и обратного конуса, The mandrel of the piercing mill is also known, which includes a working surface composed of a working cone, a transverse rolling cone and a reverse cone,

изготовленных из молнбденй с защитными покрыти ми - Гз.made of lightning with protective coatings - Gz.

Оправка предотвращает налипание деформируемого металла. Однако прочность покрыти  такЕХ оправок при температуре ;нйгрева прошиваемого , металла :fibnne и при прошивке в .вакууме длинных заго-iтовок (более 12О мм) невысока, так как известное покрытие разм гчаетс , служит смазкой и при прошивке гильз изнашиваетс . После прошивки 2-3 гильз (в зависимости от длины заготовки) оправка становитс  непригодЕой к дальнейшему использованию.The mandrel prevents sticking of the deformable metal. However, the durability of the coating of such mandrels at the temperature of the pierced metal: fibnne and when flashing long batches (more than 12 mm) is low, as the known coating softens, serves as a lubricant and wears through the liner. After flashing 2-3 sleeves (depending on the length of the workpiece) the mandrel becomes unsuitable for further use.

Цель изобретени  - уве нчение эксплуатационной стойкости инструмента (оправок ) в услови х вакуума при температурах 160О-170О°С. Это достигаетс  тем, что в оправке прошивного стана, включающей рабочую поверхность , составленную из рабочего конуса , конуса поперечной раскатки н обратного конуса,; изготовленных из сплава да основе тугоплавкого металла с наругкным покрытием, наружное покрытие выполненоThe purpose of the invention is to increase the operational durability of the tool (mandrel) under vacuum conditions at temperatures of 160 ° C to 170 ° C. This is achieved by the fact that in the mandrel of the piercing mill, which includes a working surface composed of a working cone, a transverse rolling cone and a reverse cone, made of an alloy of a refractory metal with a narugko coating, the outer coating is made

SU772449637A 1977-02-07 1977-02-07 Piercing mill mandrel SU596306A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772449637A SU596306A1 (en) 1977-02-07 1977-02-07 Piercing mill mandrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772449637A SU596306A1 (en) 1977-02-07 1977-02-07 Piercing mill mandrel

Publications (1)

Publication Number Publication Date
SU596306A1 true SU596306A1 (en) 1978-02-13

Family

ID=20694462

Family Applications (1)

Application Number Title Priority Date Filing Date
SU772449637A SU596306A1 (en) 1977-02-07 1977-02-07 Piercing mill mandrel

Country Status (1)

Country Link
SU (1) SU596306A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466265A (en) * 1981-04-03 1984-08-21 Mannesmann A.G. Compound tool for hot-working

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466265A (en) * 1981-04-03 1984-08-21 Mannesmann A.G. Compound tool for hot-working

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