Over the last twenty years we have produced a fantastic range of truly innovative products across the range of climing/mountaineering equipment. In order to do this it isn’t enough solely to rely on the expertise and flair of our design team, you have actually also got to bring the product to the marketplace at a cost that will be deemed acceptable. In other words you have to walk the talk too!
At DMM, we have consistently re-invested in plant, machinery, tooling, and generally improving the efficiency of our production processes in order to make the dreams of our design team come true. Below is a brief explanation of some of the key areas central to achieving this.
HEAT TREATMENT
Not only is all our heat treatment carried out on site, allowing us the tightest control over the process, but we have also invested heavily in upgrading and computerising the furnace control systems so as to deliver accurate and consistent
treatments to the various aluminium alloys used in production. Our solution treatment and ageing furnaces log the temperatures every 2 minutes and are accurate to +/- 1 degree C. This means that we are certain of delivering the correct treatment, and also have a complete and accurate record of every batch that passes through. So what’s the big deal with heat treatment? Why is it so important? Well in basic terms the heat treatment ensures the aluminium ends up at the optimum hardness to give a perfect balance between strength, toughness and ductility. With no heat treatment at all the aluminium would be soft and very weak, over heat treated the aluminium becomes too hard and therefore in danger of being too brittle. We aim for the optimum hardness to be strong, tough and ductile. This means that every individual product (or component part) has a tailor made recipe stipulating the time and temperature at which the product is treated. The term heat treatment involves two processes. The first (solution treatment or hardening) where the aluminium is heated in a furnace to a relatively high temperature for a short period of time and then quenched immediately in water. (around 470 degrees C for anywhere between 30 minutes to 50 minutes for
biners) The second (artificial ageing) entails the product being heated to a lower temperature for a longer period of time (in the case of 7075 this is 8 hours).After this second process the product is left to cool naturally, and it is then at our optimum hardness to achieve the required strength.Here’s a sobering thought, without heat treatment it is likely that a biner would
fail at 10 kN gate closed,whereas after correct treatment it will exceed 24 kN gate closed. Get the idea?
采纳后再加10分
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