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How does a vacuum furnace roughing pump work?
The roughing pump is the component that primes the other pumps in series on the vacuum line, evacuating the system until a pressure level is reached at which a booster pump (known as a lobe-type roots pump) can be activated, followed by other types of diffusion, turbo molecular, cryogenic, ionic andRead more
The roughing pump is the component that primes the other pumps in series on the vacuum line, evacuating the system until a pressure level is reached at which a booster pump (known as a lobe-type roots pump) can be activated, followed by other types of diffusion, turbo molecular, cryogenic, ionic and other pumps that can be used when the pressure is reached.
Depending on the flow rate, the pumping system is proportioned in relation to system volume, pumping cycle speed, load degassing and contamination produced by the load (vapors, dust, binders, etc.) in the pump itself. It is for this reason that mechanical strength and wear influence the choice of pump type.
I highly recommend you to read an intersting article (splitted in two parts) about this topic:
Roughing pump in high-vacuum furnaces for beginners [1/2]
Roughing pump in high-vacuum furnaces for beginners [2/2]
See lessWhat is a 2-bar vacuum furnace vs. 6-bar vacuum furnace?
The term 2-bar is typically describing the quenching pressure capability of the furnace. A 2-bar operates (quenches) at 2-bar or 15 psig. A 6-bar would of course be operating at 6-bar when quenching. Typically quenching pressures are selectable and the ratings would be the maximum operating pressuRead more
The term 2-bar is typically describing the quenching pressure capability of the furnace. A 2-bar operates (quenches) at 2-bar or 15 psig. A 6-bar would of course be operating at 6-bar when quenching. Typically quenching pressures are selectable and the ratings would be the maximum operating pressures.
See lessCan a vacuum heat treat furnace be considered in a confined space?
Yes a vacuum furnace or any similar chamber can be considered a confined space. A confined space is any space with limited entry or egress. The primary concern in a vacuum furnace (confined space) is limited air flow or available oxygen to breathe. With vacuum furnaces we also have to consider theRead more
Yes a vacuum furnace or any similar chamber can be considered a confined space. A confined space is any space with limited entry or egress. The primary concern in a vacuum furnace (confined space) is limited air flow or available oxygen to breathe. With vacuum furnaces we also have to consider the fact that process gasses are also connected to the furnace or vessel. These gasses can also displace oxygen when used during back-fill or if leaking.
See lessAre there any examples of touch screen furnace controllers?
This is a picture (example) of Signature's control panel integrating a "touchscreen" operator interface that interconnects with the furnace's programmable logic controller. A flat panel color operator interface terminal (touchscreen) provides graphic displays to indicate status of all furnace parameRead more
This is a picture (example) of Signature’s control panel integrating a “touchscreen” operator interface that interconnects with the furnace’s programmable logic controller. A flat panel color operator interface terminal (touchscreen) provides graphic displays to indicate status of all furnace parameters and alarm conditions. The panel also provides programming access to all ramp/soak profiles and diagnostic capability to alert the operator to any condition that prevents normal furnace operation. The interface panel (touchscreen) on the left permits the operator to control all aspects of furnace operation.
See lessWhy do thermocouples start to deviate in temperature over time?
Time and temperature have a way of making things deteriorate. Vacuum also can present a problem for the materials (constituents) of the thermocouple, specifically relating to the vapor pressure of the materials.
Time and temperature have a way of making things deteriorate. Vacuum also can present a problem for the materials (constituents) of the thermocouple, specifically relating to the vapor pressure of the materials.
See less