NL6709936A - - Google Patents

Info

Publication number
NL6709936A
NL6709936A NL6709936A NL6709936A NL6709936A NL 6709936 A NL6709936 A NL 6709936A NL 6709936 A NL6709936 A NL 6709936A NL 6709936 A NL6709936 A NL 6709936A NL 6709936 A NL6709936 A NL 6709936A
Authority
NL
Netherlands
Application number
NL6709936A
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 filed Critical
Publication of NL6709936A publication Critical patent/NL6709936A/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/04—Centering the work; Positioning the tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Milling Processes (AREA)
  • Shearing Machines (AREA)
NL6709936A 1967-04-20 1967-07-18 NL6709936A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR103504A FR1520065A (fr) 1967-04-20 1967-04-20 Procédé et appareillage pour créneler un ruban métallique destiné à être enroulé en hélice autour d'un tube

Publications (1)

Publication Number Publication Date
NL6709936A true NL6709936A (ja) 1968-10-21

Family

ID=8629286

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6709936A NL6709936A (ja) 1967-04-20 1967-07-18

Country Status (7)

Country Link
BE (1) BE700764A (ja)
CH (1) CH473621A (ja)
ES (2) ES342724A1 (ja)
FR (1) FR1520065A (ja)
GB (1) GB1181128A (ja)
LU (1) LU54031A1 (ja)
NL (1) NL6709936A (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2215276B1 (ja) * 1973-01-30 1975-10-31 Mazaleyrat Jacques
CH641982A5 (de) * 1978-06-15 1984-03-30 Schuler Gmbh L Stanzwerkzeug zum gleichzeitigen stanzen eines stator- und eines rotorbleches.
CN103639264A (zh) * 2013-11-26 2014-03-19 长沙仙达实业有限公司 冲缺冲模及冲削加工方法

Also Published As

Publication number Publication date
FR1520065A (fr) 1968-04-05
CH473621A (fr) 1969-06-15
ES342724A1 (es) 1968-12-16
LU54031A1 (ja) 1967-09-05
ES356768A1 (es) 1970-02-01
GB1181128A (en) 1970-02-11
BE700764A (ja) 1967-12-01

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