The correct use and maintenance of vacuum brazing furnace

The correct use and maintenance of vacuum brazing furnace

The popularity of vacuum brazing furnace good for users and manufacturers are, at present, the selection of the furnace has a lot of, vacuum furnace product has a lot of flooding the market. Vacuum brazing equipment is usually automatic feeder, automatic, don't need too much by the face or training can master operation.
In fact, vacuum protect operators just invited to keep strict operational procedures, press the button at the appropriate time and switch operation. In addition to the load, operation, unload and equipment function abnormal notify maintenance personnel, operators do not need to do any work. Unlike machining machine tool, do not need to change tool, also need not to lubricating oil on the parts. For new users, however, these terms and conditions are easy to be misunderstood, also easy to cause a false sense of security, will be until the time when forced, to apply for maintenance. Vacuum processing specialization brought less experienced users new maintenance problems. The vacuum brazing furnace used for brazing is bigger than abrasion is only to be used in heat treatment. If not for preventive maintenance, new stove will soon appear all sorts of problems, discontinuation of vacuum furnace.

Vacuum brazing furnace operation procedures

Vacuum brazing furnace operation procedures

Before a furnace, vacuum furnace and ensure that water, electricity, gas in the assignments. In 380 v voltage, can not have the deviation of 10%. Pressure in 0.6 Mpa, the water pressure to the lowest (0.5 Mpa). Reach the above requirements to electricity, after operation.
Second, before feeding, check the equipment heating chamber, the heating chamber is necessary to clean, can not have sundry, dust, oil, water, etc. In view to put goods, dry cleaning, same before feeding the without watermarks, oil and other washing clean.
Third, after loading, the knob to the "door close" position. Then, a "mechanical pump" and "thick smoke valve". Of vacuum unit and the furnace smoke gas, opened the vacuum furnace with the power supply (general vacuum gauge power to launch with total power supply).
Fourth, when the vacuum degree higher than 1000 pa, vacuum gauge monitoring "J2" light. This time, can open "roots pump. Conditions such as, "roots pump" will not open, click on the button no response.

To avoid contamination of vacuum brazing furnace

To avoid contamination of vacuum brazing furnace

Before getting into the vacuum brazing furnace, after waiting for welding of all zero, components should be properly cleaned and cleaning methods available skim acetone cleaning, ultrasonic cleaning or dry grinding (such as glass abrasive). Artifacts pre-cleaning is just to keep the design features of the vacuum brazing furnace systems of the first step. Assume that brazing furnace is clean, and all the operation steps in line with the provisions, cleaning the workpiece in advance is a vacuum brazing guarantee of success. However, if the previous in the impurity artifacts, causes pollution of the stove, and do not pay attention to when using or misuse, as you might expect, the brazing wouldn't have succeeded. Many operators made vacuum brazing furnace, heat treatment, because residual hydrocarbons, workshop is contained in the dirt and high vapor pressure elements of improper cleaning artifacts but often neglected effect of the vacuum furnace pollution sources, these things will be condensed in the cold area of the stove, in the high temperature again into the surrounding environment, and thus affect the brazing quality.
Casting of vacuum brazing furnace pollution is serious, in repeated process, casting is deflated, will soon be on the same furnace brazing happened impact on the quality of components. Do this too often leads to expensive overhaul and internal heating zone components clean or redo. The degassing of any materials should be completed in a vacuum, and should not be done in vacuum brazing furnace. Zinc, cadmium and lead the brazing filler metal should avoid to use, or only in argon or nitrogen partial pressure higher than 500 um, temperature below its vapor pressure under the condition of use, should try to avoid using flux.

Vacuum soldering furnace money purposes

Vacuum soldering furnace money purposes

Vacuum soldering furnace money purposes:
1. High speed steel, die steel, stainless steel quenching
2. Stainless steel, titanium alloy solid solution treatment
3. Magnetic materials of vacuum heat treatment
4. The high temperature brazing and vacuum sintering
Furnace with graphite furnace and metal furnace two kinds: general material selection more graphite furnace, its heating element for the graphite rod.
Heat insulation screen for carbon felt and ceramic blanket, if use metal molybdenum and stainless steel heat shield, it is mainly used for titanium alloys, special parts, such as soft magnetic alloy. Temperature control adopts intelligent temperature controller, motor control using FX2N programmable controller.