Создать тест
ВходPowder Metallurgy
Список вопросов теста
Вопрос 1
is a metal processing technology in which parts are produced from metallic powders.
Варианты ответов
- The heating treatment
- Powder metallurgy (PM)
- Compression
Вопрос 2
The heating treatment, called sintering, is performed at a temperature __________the melting point of the metal.
Варианты ответов
- higher
- below
- below the average
Вопрос 3
Powder metallurgy is an important commercial technology because of many advantages:
Варианты ответов
- Certain metals that are difficult to fabricate by other methods can be shaped by powder metallurgy.
- PM production methods can be automated for economical production.
- There are limitations and disadvantages associated with PM processing.
- Compression, called pressing, is accomplished in a press-type machine for the part to be manufactured.
Вопрос 4
This______ to the production of porous metal parts, such as filters, and oil-impregnated bearings and gears.
Варианты ответов
- PM
- parts
- leads
Вопрос 5
Certain metals that are difficult to fabricate by other
methods can be shaped by _______.
Варианты ответов
- tolerances
- processes
- powder metallurgy
Вопрос 6
________of ±0.13 mm (±0.005 in) are held.
Варианты ответов
- Limitations
- Methods
- Tolerances
Вопрос 7
These ________the following: (1) tooling and equipment costs are high, (2) metallic powders are expensive, and (3) there are difficulties with storing and handling
metal powders (such as degradation of the metal over time, and fire hazards with particular metals).
Варианты ответов
- allowances
- also
- include
Вопрос 8
Also, (4) there are limitations on part geometry because metal powders do not flow laterally in the die during pressing, and allowances must be provided for the ejection of the part from the die after ______.
Варианты ответов
- degradation
- handling
- pressing
Получите комплекты видеоуроков + онлайн версии
0
210
Нравится
0
