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DISSIMILAR METAL [7 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-01-09

English

Subject field(s)
  • Roofs (Building Elements)
  • Waterproofing (Construction)
CONT

Most vinyl roofing membranes are sealed using hot air, which can be compared to welding metal. The process joins two rolls of membranes at the overlap areas(without using another dissimilar material) to create one monolithic layer that covers the entire roof. The heat-welded, permanently fused seams on vinyl roofing membrane form a watertight seal, and their peel strength can be critical to the roof system's long-term performance against wind forces.

CONT

ROOF technology allows old roof membrane to be renewed without removal. ROOF technology is based upon a thermochemical treatment of bitumen roof coating. With heat applied to a section of roof coating bitumen and bituminiferous mastics start melting. Imbued with own bitumen, roof coating gains improved waterproofing capabilities. Once cooled such coating becomes a tough monolithic layer, smooth and watertight.

CONT

Hot-applied rubberized asphalts consist of proprietary blends of asphalt, mineral fillers, elastomers (natural, synthetic, or a blend of both), virgin or reclaimed oil and a thermoplastic resin. It is applied hot in such a manner as to form an impermeable monolithic membrane over the surface to be waterproofed, which may be concrete, gypsum board or wood. Improved versions of this type of system consist of two coats of rubberized asphalt with a polyester mat in between, called the fully reinforced or two-ply system.

OBS

monolithic layer: term officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Toitures (Éléments du bâtiment)
  • Étanchéité (Construction)
CONT

Les bitumes caoutchoutés sont constitués de mélanges particuliers de bitume, de fillers minéraux, d'élastomères (naturels, synthétiques ou un mélange des deux), d'huile vierge ou recyclée et d'une résine thermoplastique. Le produit est appliqué à chaud de manière à former une membrane monolithique imperméable au-dessus de la surface à hydrofuger, qui peut être en bêton, en plaques de plâtre ou en bois. Des versions améliorées de ce type de membrane sont composées de deux couches de bitume caoutchouté et d'un mat de polyester intercalaire; ces membranes sont dites «entièrement armées» ou «à deux épaisseurs».

OBS

couche monolithique : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Save record 1

Record 2 2011-11-10

English

Subject field(s)
  • Metals Mining
Key term(s)
  • dissimilar metals

French

Domaine(s)
  • Mines métalliques
OBS

Il s'agit d'éviter l'action électrolytique que peut engendrer la mise en contact de métaux [...]

Key term(s)
  • métaux de nature différente

Spanish

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Record 3 2000-09-11

English

Subject field(s)
  • Welding and Soldering (Metals)
DEF

a technique for joining similar or dissimilar metals together, without requiring fusion of the metals joined, or of any third metal or alloy introduced into the joint.

French

Domaine(s)
  • Soudage (Métal)
OBS

où la liaison est assurée [...] sans échauffement important mais à l'abri de l'atmosphère et pour des préparations de surface très poussées

Spanish

Save record 3

Record 4 1991-03-12

English

Subject field(s)
  • Burners and Steamfitting
CONT

There are basically three types of pilot burners : 1) the millivolt; 2) the bi metal; and 3) the liquid filled.... The bimetal pilot is named so because of the sensing element. The sensing element is made of two dissimilar metals welded together so that they become one piece. The two metals have different expansion rates and this causes the two metals to bend when heated. As the bimetal element is heated by the pilot flame, a movable contact is pushed toward a stationary contact. When these contacts touch, an electrical circuit is completed through them. This control is usually employed to operate in the control, or low voltage, circuit.

OBS

bimetallic element: An element formed of two metals having different coefficient of thermal expansion, used as a temperature control device

French

Domaine(s)
  • Fumisterie et brûleurs
OBS

[Brûleurs à gaz.] Détection de la température de la flamme [par] bilame. (...) Le bilame chauffé par la veilleuse se déforme et permet l'ouverture du clapet de gaz: ce dernier se dirige alors vers le brûleur,

Spanish

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Record 5 1990-10-05

English

Subject field(s)
  • Burners and Steamfitting
OBS

There are basically three types of pilot burners :(1) the millivolt;(2) the bimetal; and(3) the liquid filled. The millivolt type can be divided into the thermocouple and the thermopile. The thermocouple is an electricity producing device made of dissimilar metals. One end of the metal is heated and is called the hot junction, while the other end remains cool and is called the cold junction. The output of a thermocouple is approximately 30 millivolts(mV) when heated to a temperature of about 3, 200 °

OBS

A pilot burner is defined as a small burner used to ignite the gas at the main burner ports and a source of heat for the pilot safety device.

French

Domaine(s)
  • Fumisterie et brûleurs
CONT

[Brûleurs. Détection de la température de la flamme par] Thermocouple. Soient deux fils constitués de métaux différents. Ces fils sont soudés ou pressés à une extrémité. Cette jonction se nomme soudure chaude. À l'autre extrémité des deux fils sont soudés des fils branchés aux bornes d'un milliampèremètre. Les soudures ainsi réalisées sont nommées soudure froide. En plongeant l'extrémité du thermocouple dans une flamme, on peut remarquer que l'aiguille de l'appareil de mesure dévie. Il y a production de courant électrique. C'est cette caractéristique qui est utilisée sur les appareils de sécurité à thermocouple.

Spanish

Save record 5

Record 6 1988-04-26

English

Subject field(s)
  • Welding and Soldering (Metals)
DEF

A form of surfacing in which one or more layers of weld metal are deposited on the groove face of one member(for example, a high-alloy weld deposit on steel base metal that is to be welded to a dissimilar base metal).

CONT

The buttering provides a suitable transition weld deposit for subsequent completion of the butt weld.

French

Domaine(s)
  • Soudage (Métal)
DEF

Opération qui consiste à déposer, par soudage, une ou plusieurs couches de métal d'apport sur la face d'une pièce à souder ultérieurement à une autre pièce. (On constitue ainsi une couche de transition lors de l'assemblage de pièces en métaux dissemblables ou de métaux fortement trempants.)

Spanish

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Record 7 1986-10-28

English

Subject field(s)
  • Electrostatics
CONT

When two dissimilar metals are brought into contact, they give rise to an electrostatic potential difference equal to the difference of the work functions of the two metals(the Volta potential). At the interface of the metal couple, a bipolar electronic layer is established which attracts or repels mobile electrons, depending on the direction of the current flow.

OBS

The work function corresponds to the energy an electron must acquire in order to leave a solid.

Key term(s)
  • electrostatic potential difference

French

Domaine(s)
  • Électrostatique
Key term(s)
  • différence de potentiel électrostatique

Spanish

Save record 7

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