Machinability on the edge of the development
July 22, 2009
Manufacturers of molds and matrices need to be even more competitive with their costs, but it is also essential to be able to ship products in the smaller possible time, especially when customers make their orders as late as possible.
At the same time, large print runs of production are not so frequent as before, what makes it even less important to treat the moulds and dies thermally to the greatest possible hardness.
To meet this growing interest in avoiding heat treatment, steel manufacturers are manufacturing steel matrix and mold resistant and hard. Currently, previously mild steel with the greater hardness and strength of the market is the so-called Toolox, SSABSwedish steel manufacturer tool steel.
It has shown that the most critical operation is the deep drilling (known as drilling with cooling system). The deep drilling is usually used in the manufacture of moulds and dies when required channels of cooling in the tool.
To develop procedures and recommendations to carry out this process with success in Toolox, SSAB have considered beneficial to work with a renowned specialist in this field. Therefore, be carried out a project of technical development with Botek and the French specialist in deep taladrados René Devaux tools provider.
By optimizing the parameters of drilling and tools, to René Devaux deep drilling was not too difficult. In a test, drilled five holes 12 mm in diameter and 650 mm in depth, resulting in a combined depth of 3,250 mm without complications, it was not necessary to retallar the drill bit.
- The deep drilling in Toolox 44 is possible, but it is necessary to adapt the parameters individually for each application
- We cannot accept vibrations
- Count on tools coated with the type of right carbide is extremely important
- Have the angle recommended at the tip of the drill bit is crucial (that is not too pronounced)
- Drills oil requires 100 per cent (mixtures are not accepted)
- For more than 40 x the diameter hole, a support is necessary from the drill
The development of steels special along with the new parameters of tools are the way forward, but the most important technical know how to take advantage of these innovative developments and how to take advantage of the great benefits offered are crucial to the success of the relevant industries.