Introduction

Flat and hollow billets are fixed at spinning machine, and then heat mix flame which consists of hydrogen and compressed air, after spinning it for some times, wolfram plate becomes the shape of the crucible. Wall of spinning W-crucible is thick which would cling to the mould. It has a high density, but due to the slow development of it manufacturing process, the process maturity is not enough.

Manufacturing Process

When use this method for making tungsten crucible, users should prepare tungsten billet before. And then make it into a sheet which conforms to the design by hot-rolling process to hot-rolled, and process it into a few pieces of wafers, and put it on a hot spinning machine. After that heat mix flame which consists of hydrogen and compressed air at the temperature of 1000℃. After spinning it for a few times, tungsten plate becomes the shape of the crucible, and freeze it.

Advantages

Spinning tungsten crucible have the characteristics of high density, low roughness of surface, good quality, a good tensile strength as well as an excellent hardness

Disadvantages

Due to complexity of hot rolling process and the spinning process, it is difficult to operate.

Physical Properties

Spinning tungsten crucible's density is about 18.5-19.0g / cm3, the outer diameter is 50-300mm and the tungsten content is above 99.95%.