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FORCING SCREW [4 records]

Record 1 1999-08-23

English

Subject field(s)
  • Taps and Plumbing Accessories
CONT

Replacing a tap washer. Given that up to 50% of an electricity bill may be attributable to water heating, it is important to ensure that your hot water taps don’t drip... A leaky tap usually occurs because the internal seal is worn out. Each time you turn the tap off, the soft flexible washer, which is made from rubber or a synthetic substitute, presses against the metal washer seat, wearing a tiny part of itself away. Eventually it becomes thin and irregular in shape. This allows water to seep past and creates the annoying drip. If you don’t replace it but continue to screw the tap down tighter and tighter, eventually you will get metal forcing you to call in a plumber to regrid the washer seating. That can be an expensive business!

CONT

We undertake all types of plumbing work from changing a tap washer to the installation on commercial buildings.

French

Domaine(s)
  • Robinetterie et accessoires
CONT

Disque pour robinet [...] qualité nouvelle en caoutchouc synthétique résistant à l'eau bouillante [...] tous diamètres

OBS

rondelle : disque percé placé entre une vis ou un écrou et une pièce à serrer, destinée à transmettre et à répartir l'effort de serrage sur la pièce.

Spanish

Save record 1

Record 2 1998-08-24

English

Subject field(s)
  • Plastics Manufacturing
  • Industrial Tools and Equipment
  • Machinery
CONT

In a modern injection molding machine, the pellets are conveyed forward within the barrel by a rotating screw, and melt as they go. The molten plastic is deposited at the forward end of the barrel, displacing the screw backward. When enough material has been plasticized, a hydraulic cylinder pushes the screw forward, forcing the molten plastic ahead of it through a nozzle, sprue, runners, and a narrow gate into a water-cooled mold cavity, where the molten plastic solidifies.

CONT

... if the equipment with the malfunction is a plastic injection molding machine, the possible functions might include injection forward, injection return, screw run, back pressure control, clamp close, clamp pressurization, prefill shift, mold protect, and clamp open.

OBS

injection machine: term standardized by ISO.

Key term(s)
  • injection-moulding machine

French

Domaine(s)
  • Plasturgie
  • Outillage industriel
  • Machines
CONT

Les premières presses à injecter comportaient un piston poussant la matière ramollie dans la buse [...] Dans les presses actuelles, la plastification est assurée par une vis sans fin, analogue à celle d'une extrudeuse. Cette vis [...] fait alternativement fonction de piston d'injection et de vis de plastification.

OBS

machine à injecter : terme normalisé par l'ISO.

Key term(s)
  • machine d'injection

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
  • Herramientas y equipo industriales
  • Maquinaria
Save record 2

Record 3 1998-02-27

English

Subject field(s)
  • Plastics Manufacturing
CONT

A reciprocating screw machine is shown in Figure 12-18. As the screw rotates, melted plastic is pushed forward to the end of the extruder barrel, and the pressure pushes the screw in the opposite direction. When the necessary amount of melt has collected, a hydraulic cylinder moves the screw forward, forcing plastic out of the die head to form the parison(s).

Key term(s)
  • reciprocating screw blow moulder
  • reciprocating screw extrusion blow molder
  • reciprocating screw extrusion blow moulder
  • reciprocating screw extrusion blow-molder
  • reciprocating screw extrusion blow-moulder
  • reciprocating screw-extrusion blow-moulder

French

Domaine(s)
  • Plasturgie
OBS

Transfert par vis-piston, système vis-piston.

Spanish

Save record 3

Record 4 1998-01-19

English

Subject field(s)
  • Plastics Manufacturing
CONT

Reciprocating screw systems. In a reciprocating(in-line) screw, the material is fed from the hopper, plasticized in the screw, and forced past a one-way valve at the injection end of the screw. The material accumulates in front of the screw, forcing back the screw, its drive and motor, and the pistons of the two hydraulic injection cylinders.... When the screw reaches a certain position, it contacts a limit switch that stops the rotation. When the cycle is ready to inject, two hydraulic injection cylinders, one on each side of the carriage, move the screw assembly forward and use the screw as an injection ram.

Key term(s)
  • in-line screw system

French

Domaine(s)
  • Plasturgie
CONT

[...] stockage de la matière par : [...] un système vis-piston [...]

Spanish

Save record 4

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