First Tungsten Carbide Rod in China

First Tungsten Carbide Rod in China

On March 1958, China gave the mission to factory 601 to make φ2 mm tungsten carbide rod. After a long and hard research, on September 7^th, 1958, the first φ2 mm tungsten carbide rod was made successfully in factory 610. China had the ability to produce tungsten carbide rod since then and no longer need to be controlled by foreign companies.

Tungsten carbide rod is used to made mining tools which does great benefit to ore mining. Before factory 601 made it, our country mainly get the tool from other countries to operate mining.

Binder, mould and cutting is the hardest part during the experiment.  Compression moulding and semi-finished product sintering is the most important part in the process. The traditional binder gasoline colloidal solution is no longer suitable for the tungsten carbide rod extrusion method. Finally they use the paraffin as binder and also the perfect type and amount. In order to reduce the friction between the binder and diaphragm wall, lubricant is also added in it. To solve the pressing mould problem, they decided to insert a small device like a tower in the mould to distribute pressure.  Also after a long exploration they find a new method which makes the cutting efficiency 8 times faster then before. 


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