GB765367A - A method of sheathing heat-sensitive cables or the like - Google Patents

A method of sheathing heat-sensitive cables or the like

Info

Publication number
GB765367A
GB765367A GB25995/54A GB2599554A GB765367A GB 765367 A GB765367 A GB 765367A GB 25995/54 A GB25995/54 A GB 25995/54A GB 2599554 A GB2599554 A GB 2599554A GB 765367 A GB765367 A GB 765367A
Authority
GB
United Kingdom
Prior art keywords
die
extrusion
temperature
mandrel
aluminium
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.)
Expired
Application number
GB25995/54A
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.)
Schloemann AG
Original Assignee
Schloemann 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 Schloemann AG filed Critical Schloemann AG
Publication of GB765367A publication Critical patent/GB765367A/en
Expired legal-status Critical Current

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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/22—Making metal-coated products; Making products from two or more metals
    • B21C23/24—Covering indefinite lengths of metal or non-metal material with a metal coating
    • B21C23/26—Applying metal coats to cables, e.g. to insulated electric cables
    • B21C23/28—Applying metal coats to cables, e.g. to insulated electric cables on intermittently-operating extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

765,367. Extruding; working at specified temperatures. SCHLOEMANN AKT.-GES. Sept. 8, 1954 [Nov. 20, 1953], No. 25995/54. Drawings to Specification. Class 83 (4). In the sheathing of heat-sensitive cables or extruded rods or tubes of synthetic material, with heated metal, particularly lead or aluminium, by means of an extrusion press having a cooled die and mandrel and a cooling device, such as a sprinkler, for acting on the sheath as it leaves the die, and wherein the extrusion is stopped whilst the press container is recharged, the speed of extrusion is gradually reduced before each stop period with continuance of the cooling, in such a manner that the cable or the like is not damaged by heat but the temperature at the extrusion die is maintained sufficiently high for extrusion to be resumed. The extrusion speed is preferably 10 centimetres per second and is gradually reduced to zero in one minute. If the stop period is prolonged the coolant supply to the die and mandrel may be throttled to prevent the temperature falling below a predetermined value. Thermocouples may be provided on the mandrel and/or die for indicating the temperature and enabling the supply of coolant to be controlled automatically. An example is given of a cable of 20 millimetres diameter insulated with dry or impregnated paper, sheathed with aluminium to a thickness of one millimetre. The initial temperature of the aluminium is 530‹ C. and the temperature of the die and mandrel is cooled to 180‹ C. during recharging.
GB25995/54A 1953-11-20 1954-09-08 A method of sheathing heat-sensitive cables or the like Expired GB765367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE765367X 1953-11-20

Publications (1)

Publication Number Publication Date
GB765367A true GB765367A (en) 1957-01-09

Family

ID=6673080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25995/54A Expired GB765367A (en) 1953-11-20 1954-09-08 A method of sheathing heat-sensitive cables or the like

Country Status (1)

Country Link
GB (1) GB765367A (en)

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