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1. WO2016084361 - METHOD FOR MANUFACTURING RIFLED TUBE

Publication Number WO/2016/084361
Publication Date 02.06.2016
International Application No. PCT/JP2015/005823
International Filing Date 24.11.2015
IPC
B21C 37/20 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
37Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
06of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
15Making tubes of special shape; Making the fittings
20Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies
B21C 3/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
3Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing
16Mandrels; Mounting or adjusting same
CPC
B21C 1/24
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
1Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
16Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
22specially adapted for making tubular articles
24by means of mandrels
B21C 3/16
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
3Profiling tools for metal drawing; Combinations of dies and mandrels
16Mandrels; Mounting or adjusting same
B21C 37/152
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
37Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
06of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
15Making tubes of special shape; Making tube fittings
152Making rifle and gunbarrels
B21C 37/20
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
37Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
06of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
15Making tubes of special shape; Making tube fittings
20Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
B21C 37/207
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
37Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
06of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
15Making tubes of special shape; Making tube fittings
20Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
207with helical guides
B21D 53/06
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
53Making other particular articles
02heat exchangers ; or parts thereof; , e.g. radiators, condensers ; fins, headers
06of metal tubes
Applicants
  • 新日鐵住金株式会社 NIPPON STEEL & SUMITOMO METAL CORPORATION [JP]/[JP]
  • 三菱日立パワーシステムズ株式会社 MITSUBISHI HITACHI POWER SYSTEMS, LTD. [JP]/[JP]
Inventors
  • 中島 崇 NAKASHIMA, Takashi
  • 伊勢田 敦朗 ISEDA, Atsuro
  • 三木 健史 MIKI, Takeshi
  • 大塚 俊一 OTSUKA, Shunichi
Agents
  • アセンド特許業務法人 ASCEND IP LAW FIRM
Priority Data
2014-23817125.11.2014JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR MANUFACTURING RIFLED TUBE
(FR) PROCÉDÉ POUR LA FABRICATION DE TUBE NERVURÉ
(JA) ライフルチューブの製造方法
Abstract
(EN)
A method for manufacturing a rifled tube (15) having a plurality of first helical ribs (12) on an inside face thereof and having an outside diameter of 34 mm or less is provided with: a step for preparing a steel pipe having a tensile strength of 600 MPa or less; and a step for cold-drawing the steel pipe using a plug (2) having a plurality of helical grooves (21) and a plurality of second helical ribs (22) each arranged between adjacent helical grooves (21), the plug (2) satisfying expression (1) and expression (2). (1): 0.08 < W × (A – B) × N/(2π × A) < 0.26. (2): 0.83 < S × (A – B) × N/(2 × M) < 2.0. In the expressions, W is the width (mm) of groove bottom faces (210) of the helical grooves (21) in a transverse section of the plug (2), A is the maximum diameter (mm) of the plug (2), B is the minimum diameter (mm) of the same transverse section having the aforementioned maximum diameter, N is the number of second helical ribs (22) in the transverse section, S is the width (mm) of the groove bottom faces (210) in a longitudinal section of the plug, and M is the pitch (mm) of the second helical ribs (22) in the longitudinal section.
(FR)
L'invention concerne un procédé pour la fabrication d'un tube nervuré (15) sur une surface intérieure duquel se trouvent une pluralité de premières nervures hélicoïdales (12) et ayant un diamètre externe inférieur ou égal à 34 mm, comprenant : une étape consistant à préparer un tuyau en acier ayant une résistance à la traction inférieure ou égale à 600 MPa ; et une étape consistant à étirer à froid le tuyau en acier à l'aide d'un manchon mâle (2) comprenant une pluralité de rainures hélicoïdales (21) et une pluralité de secondes nervures hélicoïdales (22) disposées chacune entre des rainures hélicoïdales adjacentes (21), le manchon mâle (2) satisfaisant à l'expression (1) et l'expression (2). (1) : 0,08 < W × (A – B) × N/ (2π × A) < 0,26. (2) : 0,83 < S × (A – B) × N/ (2 × M) < 2,0. Dans les expressions, W représente la largeur (mm) de faces inférieures de rainure (210) des rainures hélicoïdales (21) dans une section transversale du manchon mâle (2), A représente le diamètre maximal (mm) du manchon mâle (2), B représente le diamètre minimal (mm) de la même section transversale ayant le diamètre maximal susmentionné, N représente le nombre de secondes nervures hélicoïdales (22) dans la section transversale, S représente la largeur (mm) des faces inférieures de rainure (210) dans une section longitudinale du manchon mâle et M représente le pas (mm) des secondes nervures hélicoïdales (22) dans la section longitudinale.
(JA)
複数の第1螺旋状リブ(12)を内面に有し、34mm以下の外径を有するライフルチューブ(15)を製造する上記製造方法は、600MPa以下の引張強さを有する鋼管を準備する工程と、複数の螺旋状溝(21)と、各々が、隣り合う螺旋状溝(21)の間に配置される、複数の第2螺旋状リブ(22)とを有し、式(1)及び式(2)を満たしたプラグ(2)を用いて鋼管に対して冷間引抜きを実施する工程とを備える。0.08<W×(A-B)×N/(2π×A)<0.26 (1)0.83<S×(A-B)×N/(2×M)<2.0 (2)式中のWはプラグ(2)横断面の螺旋状溝(21)の溝底面(210)の幅(mm)、Aはプラグ(2)の最大径(mm)、Bは最大径と同一横断面の最小径(mm)、Nは横断面の第2螺旋状リブ(22)の個数、Sはプラグ縦断面の溝底面(210)の幅(mm)、Mは縦断面の第2螺旋状リブ(22)のピッチ(mm)である。
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