The vacuum melting furnace

The vacuum melting furnace

Equipment USES the product is mainly used for universities and colleges, scientific research institutions and production enterprises under the condition of vacuum or protective atmosphere of metal materials (such as stainless steel, nickel base alloy, copper, alloy steel, nickel and cobalt alloys, rare earth neodymium iron 錋) melting processing, can also be used for alloy steel vacuum refining processing and precision casting.
This product by the furnace cover, furnace body structure, furnace bottom, slewing mechanism of crucible, vacuum system and intermediate frequency power supply control system, etc.
Furnace cover, furnace, furnace bottom adopts double water cooling structure, keep the temperature of the bof shell is not more than 60 ℃. Furnace cover opened the way for manual and the furnace cover with observation holes and damper, to facilitate adding alloying elements to the process of melting, furnace cover on AD hoc alloy feeder. Furnace is an induction coil, by manual rotation handle outside the furnace can be easily within the crucible melting liquid poured into the mold, mold can be designed to be cooled. Upper crucible is equipped with a temperature measuring device.
By secondary pump, vacuum system, K - 300 oil diffusion pump and 2 x - 70 mechanical pump, mechanical pump is equipped with electromagnetic relief valve on the return oil after avoid blackouts. With bleed valve and charging valve on the vacuum unit.

Correct single crystal furnace is safe and efficient operation

Correct single crystal furnace is safe and efficient operation

Single crystal furnace operation is also a science, before the formal operation, we need to check whether the temperature inside the furnace is suitable feed, does not allow loading in high temperature, check on the single crystal furnace control device to run, all the equipment should be under normal circumstances can be switched on.
Before loading operation, check the need to install the material, not into large pieces of material, removed first, back to the same melting also want to take it out, after crushing smaller material can be normal use, to ensure the normal operation of the incoming request is higher in a certain degree of the crucible, does not allow low, quartz crucible wall should pay attention to cleanliness, can't touch or other contact. Select the crucible can't rotate.
Operating equipment should pay attention to not be sharp Angle of the cut, at the time of loading to should take put down gently, not careless rude, the operator should pass professional guidance, bring clean gloves can't again after contact in addition to material things, to ensure that the material is clean, serious and responsible operation, smooth material had better be to realize a successful placement. Chunks of material not only after crushing, but should be placed close to the wall, adding suitable amount of dopant rear can continue to put small pieces of material.

How to improve the service life of vacuum induction furnace lining

How to improve the service life of vacuum induction furnace lining

Induction of the vacuum furnace lining refractory materials used for the high temperature performance mainly depends on the physical and chemical properties and mineral composition, on the premise of raw and auxiliary materials selection, sintering process is to make the lining have good microscopic structure to give full play to its high temperature resistant performance of the key working procedure. Lining sintering densification degree and refractory material ratio of the chemical composition, particle size, sintering process and sintering temperature and other factors. Ningbo shekinah electric co., LTD., through ten years of trial and error and production test, summarized the knot reasonable construction technology and baking sintering process, the sharp rise in the furnace life, induction furnace life of vacuum furnace dry rammed lining (a long) as much as 1157 times, has obtained the remarkable economic benefits.
Second, the construction process
1, when the furnace building remove mica paper.
2, the furnace building made of crystal quartz sand as follows:
Hand picking, mainly eliminate block and other impurities;
Magnetic separation: the magnetic must be completely removed;
Dry ramming material: must slow drying processing, baking temperature of 200 ℃ to 300 ℃, heat preservation more than 4 hours.
3, the selection of binder: with boron anhydride (B2O3) instead of boric acid (H3BO3) as a binder, the addition amount of 1.1% to 1.1%.