Welcome to dtj-online.com

Welcome to dtj-online.com, the web-based version of Diamond Tooling Journal or DTJ for short.

Published on a quarterly basis, DTJ is the only truly international journal in existence that reports on all the major happenings in the world of industrial diamond and cubic boron nitride.

All site visitors are invited to join as a member. Benefits of membership include access to all current and past articles in DTJ, which can be downloaded as pdfs. On request, members will also be sent a printed copy of the magazine.


In this issue

Here are a few examples of the articles contained in DTJ issue 4/2010, which can be downloaded as pdfs. For a complete list, go to Current Issue on the main menu.

To download all articles in this current issue, log in as a Member, or join as a Member by clicking here.



Diamond drilling plays its part in Chile mine rescue
They say it’s always good to have a Plan B, in case Plan A fails. The recent rescue operations at the San José copper and gold mine in Chile went one step further with a Plan C: three separate drill rigs were used simultaneously in a race against time to tunnel down 700 m to rescue the trapped men. 33 days after it had started drilling, the Plan B drill bit, fi tted with polycrystalline diamond compacts (PDC), broke through the roof of the mine tunnel and four days later, all 33 men had been safely removed from the mine. This report by Martin Jennings.

Diamond recovery - what's it worth?
With the constant downward pressures on the cost of synthetic diamond, the question of whether or not recovery of diamond in tools is really worth the effort is probably one that has crossed the mind of many in the diamond tooling industry. Anecdotal evidence suggests that recycling of diamond in the global industry is now small; with only between 8-10% of new material bought is reclaimed. Report by E. McClarence.


Complete machining of turbochargers
The machining of a turbocharger poses particular problems due to the many different materials used in its manufacture, such as cast and nickel steel alloys and aluminium alloys. One leading tool supplier has developed an extremely cost-effective method for the complete machining of turbocharger components. This report by H. Steidle describes a method that makes it possible to machine all the features for the main bore in the turbine housing in only four steps using ISO combination tools, and use PCD combination tools for machining the compressor housing.