www.mtt-group.com

Prototype sheet metal forming toolsin as little as 3 to 5 days using a rangeof low melting point alloys.MTT Sheet Metal Tooling SystemSheet metal form tooling produced using MTT137 low melting point alloy isused by many automotive manufacturers including BMW and Chrysler forapplications where between 20 and 200 short series or prototype pressingsare produced when developing new models.Sheet metal forming tools are produced using low melting point alloys castagainst a master model or part. The process is similar in principle to the EPtooling process where the two halves of a tool are created using a sequentialprocess. The punch and die are created by suspending the model in a castingframe; the low melt alloy is then cast against this model to produce the firsthalf of the tool. Once cool the model can be removed and the first half is thenlaid up with pattern makers sheet wax to the desired thickness, the secondhalf of the tool is then cast by pouring low melt alloy against the wax.Once the process is complete the tool can be on the press in a matter of hoursand like EP, tool life can be extended by incorporating steel inserts for morecomplex and detailed features.MTT can supply a range of melting tanks from 100kg up to 60 tonnes to suitapplications from simple brackets to complete automotive floorpans.• Large automotive press tools in days• Dimensionally extremely accurate• No distortion• No finishing required• Low processing temperature• Non toxic• Completely re-usabale15