WO2011003283A1 - Procédé de préparation pour coude forgé - Google Patents

Procédé de préparation pour coude forgé Download PDF

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Publication number
WO2011003283A1
WO2011003283A1 PCT/CN2010/001026 CN2010001026W WO2011003283A1 WO 2011003283 A1 WO2011003283 A1 WO 2011003283A1 CN 2010001026 W CN2010001026 W CN 2010001026W WO 2011003283 A1 WO2011003283 A1 WO 2011003283A1
Authority
WO
WIPO (PCT)
Prior art keywords
forged
elbow
pipe
wall
wall thickness
Prior art date
Application number
PCT/CN2010/001026
Other languages
English (en)
Chinese (zh)
Inventor
周菊明
Original Assignee
上海昌强电站配件有限公司
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 上海昌强电站配件有限公司 filed Critical 上海昌强电站配件有限公司
Publication of WO2011003283A1 publication Critical patent/WO2011003283A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L43/00—Bends; Siphons
    • F16L43/001—Bends; Siphons made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/14—Making machine elements fittings
    • B21K1/16—Making machine elements fittings parts of pipe or hose couplings

Definitions

  • the invention relates to the technical field of elbow preparation, and in particular to a preparation process of a forged elbow. Background technique
  • the current elbow manufacturing process mainly bends the symmetrical center-distance forged pipe into an elbow, so that the wall thickness of the outer ring of the elbow becomes thin after bending, and the wall thickness of the inner ring becomes thick after bending.
  • the wall thickness of the inner and outer rings of the elbow is not uniform, so that in the actual application, after being connected to the relevant equipment, the wall is likely to cause cracking, which affects the service life of the product.
  • the invention overcomes the deficiencies of the prior art, and the eccentricity formed by the forging tube makes the half wall of the forged pipe thicker and the other half wall relatively thin, and the wall thickness of the outer ring as the elbow when bending, the wall is thin As the inner ring of the elbow, the wall thickness of the inner and outer rings of the bent elbow is relatively uniform.
  • a preparation process of a forged elbow designed by the present invention is characterized in that: (1) a forged pipe: the forged bar is fixed and then formed into a forged pipe, and the eccentricity of the forged pipe is the final finished elbow wall Thickness of 4% to 6%; (2) Bending: After heat treatment of the forged pipe, the thin semi-circular pipe wall of the wall of the forged pipe formed by the eccentricity is used as the inner ring of the elbow, and the wall thickness The semicircular pipe wall acts as the outer ring of the elbow, and the forged pipe is bent into an elbow.
  • the inner and outer surfaces of the forged pipe are also subjected to sandblasting and grinding.
  • the invention has a simple process, and the method can also bend a large elbow and ensure a relatively uniform wall thickness of the inner and outer rings of the elbow.
  • Fig. 1 is a schematic diagram of processing in the embodiment of the present invention.
  • Forged pipe After the forged bar is fixed, it is punched into a forged pipe.
  • the eccentric distance of the forged pipe is 4% ⁇ 6% of the wall thickness of the finished elbow;
  • the forged pipe According to the material of the forged pipe, after the heat treatment of the forged pipe, it is generally heated to 1050 ⁇ 1200 °C, and then the inner and outer surfaces of the forged pipe are sandblasted and polished as needed, and the forged pipe formed by the eccentricity is
  • the thin semi-circular pipe wall is used as the inner ring of the elbow, and the semi-circular pipe wall with the thick wall is used as the outer ring of the elbow, and the forged pipe is bent into an elbow, so that the elbow is bent.
  • the wall thickness is relatively uniform, so that the elbow with uniform wall thickness can be obtained by finishing with a little grinding, etc.
  • the curved elbow can be subjected to subsequent finishing processing according to the product design requirements, such as beveling and chamfering. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

La présente invention concerne un procédé de préparation pour un coude forgé consistant à (1) forger un tuyau en découpant une tige forgée dans un tuyau forgé après avoir fixé la tige forgée. L'excentricité (5) du tuyau forgé correspond à 4 à 6 pour cent de l'épaisseur de paroi du coude fini. Le procédé consiste également à (2) plier un tuyau en pliant le tuyau forgé pour former un coude en utilisant la paroi de tuyau semi-circulaire plus fine du tuyau forgé comme bague interne (1) du coude et la paroi de tuyau semi-circulaire plus épaisse comme bague externe (2) du coude après traitement thermique. Le procédé peut produire un coude pourvu d'une épaisseur de paroi des bagues interne et externe relativement uniforme.
PCT/CN2010/001026 2009-07-06 2010-07-09 Procédé de préparation pour coude forgé WO2011003283A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2009100544122A CN101603614B (zh) 2009-07-06 2009-07-06 锻造弯头的制备工艺
CN200910054412.2 2009-07-06

Publications (1)

Publication Number Publication Date
WO2011003283A1 true WO2011003283A1 (fr) 2011-01-13

Family

ID=41469460

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/001026 WO2011003283A1 (fr) 2009-07-06 2010-07-09 Procédé de préparation pour coude forgé

Country Status (2)

Country Link
CN (1) CN101603614B (fr)
WO (1) WO2011003283A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115283975A (zh) * 2022-07-13 2022-11-04 珠海格力电器股份有限公司 自动拍打装置及拍打方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101603614B (zh) * 2009-07-06 2010-12-01 上海昌强电站配件有限公司 锻造弯头的制备工艺
CN103231224B (zh) * 2013-04-17 2015-09-23 二重集团（德阳）重型装备股份有限公司 直管管坯内壁堆焊后成型90°弯管的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960557A (en) * 1931-04-22 1934-05-29 Tube Turns Inc Pipe fitting
US2066775A (en) * 1935-07-16 1937-01-05 Tube Turns Inc Pipe fitting
JPH01238788A (ja) * 1988-03-16 1989-09-22 Mitsubishi Heavy Ind Ltd パイプ
CN1255595A (zh) * 1998-11-29 2000-06-07 山东日照发电厂 耐冲刷弯头
DE102007030942A1 (de) * 2007-07-03 2009-01-08 J. Eberspächer GmbH & Co. KG Gebautes Metallrohr
CN101603614A (zh) * 2009-07-06 2009-12-16 上海昌强电站配件有限公司 锻造弯头的制备工艺

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100338020B1 (ko) * 1999-09-15 2002-05-24 정재순 진동하중에 의한 엘보제조장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960557A (en) * 1931-04-22 1934-05-29 Tube Turns Inc Pipe fitting
US2066775A (en) * 1935-07-16 1937-01-05 Tube Turns Inc Pipe fitting
JPH01238788A (ja) * 1988-03-16 1989-09-22 Mitsubishi Heavy Ind Ltd パイプ
CN1255595A (zh) * 1998-11-29 2000-06-07 山东日照发电厂 耐冲刷弯头
DE102007030942A1 (de) * 2007-07-03 2009-01-08 J. Eberspächer GmbH & Co. KG Gebautes Metallrohr
CN101603614A (zh) * 2009-07-06 2009-12-16 上海昌强电站配件有限公司 锻造弯头的制备工艺

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115283975A (zh) * 2022-07-13 2022-11-04 珠海格力电器股份有限公司 自动拍打装置及拍打方法

Also Published As

Publication number Publication date
CN101603614B (zh) 2010-12-01
CN101603614A (zh) 2009-12-16

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