
Teste de tratamentos termoquímicos
Authored by werick costa
Science
University
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A presença de grãos com tamanhos e formas diferentes na estrutura do aço dá origem a:
rupturas
rugosidade
tensões internas
desequilíbrio
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para aliviar tensões internas do aço, usa-se o seguinte meio:
usinagem
resfriamento
prensagem
recozimento
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para refinar uma granulação grosseira, usa-se o seguinte procedimento:
raspagem
normalização
usinagem
aquecimento
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O recozimento pleno consiste em aquecer o aço em temperatura:
abaixo da zona crítica
no limite da zona crítica
acima da temperatura ambiente
acima da zona crítica
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
- Para aumentar a dureza e a resistência à tração dos metais ferrosos, usa-se o tratamento térmico de:
fundição
têmpera
aquecimento
resfriamento.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O processo da têmpera consiste em aquecer o aço à temperatura:
normal, de 20ºC
elevada, próxima a 100ºC
acima da zona crítica
dentro da zona crítica
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para corrigir a excessiva dureza do aço provocada pela têmpera, usa-se o processo de:
martêmpera
austêmpera
normalização
revenimento
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