Perform Routine Trade Tasks Flashcards

1
Q

Low-Carbon Steel

A

0,05 ~ 0.30% carbon
Ductile, Machinable and Weldable
Can only be cased hardened (cannot be through hardened)
Dúctil, Usinável e Soldável
Só pode ser endurecido (não pode ser totalmente endurecido)

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2
Q

Midium-Carbon Steel

A

0.30 ~ 0.60% carbon
Greater tensile strength, more challenging to machine and weld
Can be hardened.
Maior resistência à tração, mais desafiador para usinar e soldar
Pode ser endurecido.

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3
Q

High- Carbon Steel

A

0.60 ~ 1.7% carbon
Hard and wear resistant
More difficult again to machine and weld to to hardening.
Duro e resistente ao desgaste
Mais difícil novamente de usinar e soldar para endurecer.

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4
Q

What is the thread angle of an imperial thread?

A

60 graus

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5
Q

Center Gage

A

Escantilhão

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6
Q

Converter pés (foot) para pés decimais.

A

Polegadas em pés = n. pol./12

1 foot = 12 inches

12’9” (12 pés e 9 polegadas)

9/12 = 0,75 pés

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7
Q

Escolha da serra fita para cortar um material de 3/8 de espessura.

A

Lembre∶ 3 dentes de serra em contato.

3/8 = 0,375 ~ 0,375/3 = 0,125

Dividimos por uma polegada ~ 1/0,125 = 8

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8
Q

UNF means?

A

Unified Fine Thread.

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9
Q

Localizador de borda “loquinho”

A

Edger finder 900 RPM

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10
Q

1/2 - 12 - UNC - 3A - LH
1 2 3 4 5

A

1- Diametro maior.
2- Fios por polegada.
3- Classe da rosca.
4- Tolerancia 1- loose 2 - standard 3-close.

Letra A - EXTERNAL. B - INTERNAL

5- Direção dos fios - direita ou esquerda.

DFCTD

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11
Q

SENTIDO DE GIRO

1 - Fresa de topo direita

2 - Fresa de tpo esquerda

A

1 - Direita = Anti-horário

2 - Esquerda = Horário

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12
Q

1 - GRAY CAST IRON
2 - LOW CARBON STEEL

A

1- Faisca laranjada
2- Esbranquissada

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13
Q

Pinos cônicos IMPERIAL

A

1/4” over 12 inches

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14
Q

HIGH HELIX DRILL

A

40° SOFT METALS LIKE ALUMINUM

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15
Q

STANDARD HELIX DRILL

A

30° MAIS UTILIZADA EM METAIS

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16
Q

LOW HELIX DRILL

A

12° BRASS AND BRONZE

17
Q

STRAIGHT FLUTED DRILL

A

0° BRASS AND BRONZE SHEET METAL

18
Q

118° E 135°

A

118° Ângulo padrão.

135° Ângulo para materiais duros

19
Q

NPT

A

National Pipe Thread

20
Q

Dull tooling

A

Ferramenta cega

21
Q

Welding spatter

A

Respingos de solda

22
Q

Welding slag

A

Escorias de soldagem

23
Q

Para fazer alargamento de um furo chavetado qual alargador utilizar?

A

Alargador espiral que ficara em contato direto com a área a ser alargada.

24
Q

Parafuso sem marcas

I I I

I I I I I I

A

Grade 2

Grade 5

Grade 8