Английский для сварщиков. Гричин С.В. - 144 стр.

UptoLike

ВУЗ: 

ТПУ | Томск

Составители: 

Рубрика: 

144
Vocabulary
bare spot оголенный участок
wire feeder механизм подачи (электродной или присадочной)
проволоки
ground
connection
1) заземление, замыкание на землю 2) соединение на
корпус
power
switch
переключатель мощности
rupture а) пробой (изоляции) б) излом, разрушение, разрыв
confined
space
замкнутый объём, замкнутое пространство
exhaust
hood
вытяжной шкаф; вытяжной колпак
Reading
Text 2. Safety and Scheduled Maintenance Protect Your Welding Assets
Q: What can I do to avoid electrical shocks?
A: Wet working conditions must be avoided, because water is an excellent
conductor and electricity will always follow the path of least resistance. Even
a person's perspiration can lower the body's resistance to electrical shock.
Poor connections and bare spots on cables further increase the possibility of
electrical shock, and therefore, daily inspection of these items is
recommended. Equipment operators should also routinely inspect for proper
ground connections.
Q: How can I inspect and maintain my wire feeder?
A: Periodically inspect the electrode wire drive rolls. If dirty, remove the
drive rolls and clean with a wire brush. Deformed drive rolls should be
replaced. Drive rolls should be changed, adjusted or cleaned only when the
wire feeder is shut off. In addition, check the inlet and outlet guides and
replace if they are deformed from wire wear. Remember that when power is
applied to a wire feeder, fingers should be kept away from the drive roll area.
Q: What are some important electrode safety considerations?
A: Welding power sources for use with MIG and TIG welding normally are
equipped with devices that permit on/off control of the welding power output.
If so, the electrode becomes electrically hot when the power source switch is
ON and the welding gun switch is closed. Never touch the electrode wire or
any conducting object in contact with the electrode circuit, unless the welding
power source is off. Welding power sources used for shielded metal arc
welding (SMAW or Stick welding) may not be equipped with welding power

Страницы