The Paradur Short Chip HT for blind holes of Walter avoids the balls of shavings
Is possible that during the threaded of blind holes obtain like result an espiral of shavings. If it occurs, it is particularly harmful for the male. The operario has to take part to remove the shaving. The costs of production are touched. The Paradur Short Chip HT ensures that this does not go to suceder. A package of special characteristics prevent the learning of balls of shavings no wished: this package includes a reduction to 9 degrees in the entrance combined with the rectified of the chamfer of reduction of entrance. This angle reduced melts with the one of propeller of 15º after a few threads. Besides, the edges of cut have an angle of desprendimiento adjusted. The axial internal refrigeration favours the evacuation of the shaving by the channels.
Thanks to these characteristics, the tool allows the manufacture of threads until 3,5xD of depth without shavings, what also is possible with steels of long shaving with a minimum resistance to the traction between 850 and 1250 N/mm2. Therefore, using the abbreviation ‘HT0' —high resistance (strength). If the situation is of good characteristics to break the shaving, the tool can work even with materials of low resistance to the traction (from aprox. 500 N/mm2). Like secondary application, the tool can even be used in alloys of To the and in ductile foundries. Here also, Walter feels that the composition of the material and the behaviour of the shaving are important.
To reach the maximum life of possible tool, the Paradur Short Chip HT comes with the tested coating THL for hard material. The exception here is the zone where has reduced the propeller since it is rectified after the coating. The purpose of this reduction of propeller rectified is to have a control of optimum shaving. Since it warns the learning of balls of shaving, the male offers a reliability of process.
The male of Walter Prototyp Paradur Short Chip HT is not an odd for our customers. Walter already has supplied these males like semi-special for many of them. “The big results and experiences explained by our customers of this tool, carried us to include it in our standard catalogue of Walter Prototyp”, explains Swindle Mager, Senior manager of product of Threaded in Walter.
