Sintered tungsten crucible is widely used in crystal growing industry. We produce tungsten smelting crucibles a lot for crystal customer. Tungsten melting crucible could work in 2000℃ above temperature in vacuum or inert gas protected atmosphere.
Tungsten crucible cup has high melting point, high strength & hardness, high temperature resistance, low electric resistance ect. characters. These makes pure tungsten melting pot crucible an important part in high temperature industry like sapphire crystal growing furnace.
In rare earth metallurgy industry and vacuum coating industry, tungsten melting crucible is also a good choice. High purity, high temperature resistance ect. are the advantages of pure tungsten melting pot crucible.
Are you curious of the production of tungsten crucible for melting?
Let me explain and express.
First we purchase high purity and quality pure tungsten powder. According to customers' dimension requirments, we design suitable rubber mould, and put the powder into the mould. During the time, must wear the mask carefully to prevent powder come into our mouth or nose. The next step is isostatic cool pressing. Of course it need the isostatic pressing facility. After that, the tungsten melting crucible has shaped. And now is the important step, to sinter in our sinter furance. One time sintering will take some time. When sintering finished, last but not the least step is to lathe the crucibles. Lathe will make the dimension exact and surface beautiful. Of course the inspection department will test the sintered tungsten crucible to make sure the tungsten melting crucibles is qualified. If not, go back to production department. All these responsible control makes sure that ours are high quality, beautiful, durable tungsten smelting crucibles.
Except for sintered tungsten crucibles, there are small dimension crucibles (dia 20-50mm) made by turning (dia20-50mm) from rods and spinning (wall thickness far less than 10mm) from plates. According to different dimensions, we will design suitable production way.
At first we will make sure that we got all customer's requirements clear. Then place order to production department and inspection department. Each production process will test themselves if everything is right. And before shipping, all products will pass the packing department only after inspection department inspected that the products meet customer's requirements. If not, the products will go back to production department for fixing or remaking.
For production, normally our lead time is 20-30 days. But according to different products and different quantity, it changes a little. If your order is emergency, contact with us, we will find a way out to solve your problem. For shipping, normally we ship by express and air. Express takes about 7-10 days, and air 3-5 days. And if customer requires by sea, we will ship by sea, it takes normally 40-50 days.
All our products are shipped after strict inspection and safety packing. Inspection by each production process makes sure the quality is good. And the inspection department will inspect again carefully to make sure everything is right. But if quality issue really occurs, we are sorry, and we will be responsible. To fix the products or remake them, we will make everything right.
In order to keep our healthy cooperation, our payment term normally is 50% payment in advance, balance paid before shipping. And if customer needs, we will calculate the shipping cost for your reference.
