Cold pilger technologyTube and pipe making
Our cold pilger mills use a special cold forming process which is both cost-efficient and indispensable for many applications. It involves a large number of forming steps to improve roundness, stress homogeneity, and surface roughness of the tubes. You can even apply our cold pilger mills to produce difficult materials beyond the capabilities of other processes.
Cold pilgering is a rolling process for metal tubes that reduces diameters and wall thicknesses.
Located inside the tube is a stationary mandrel (1) which tapers in the rolling direction. This is attached to a long mandrel bar (4) which is secured in, and rotated by, a thrust block. Two dies (2) "form" the tubular stock in the same way that a rolling pin rolls out pastry. These two dies are mounted in a reciprocating saddle (3). Their drive pinions mesh with two stationary racks. That's how the dies rotate back and forth in synchronization with the reciprocating saddle. The saddle, in turn, is moved back and forth by a crank drive in the same way as a piston in the engine of a motor car.
SMS group cold pilger mills achieve large reductions in both diameter and wall thickness. Simultaneously, they significantly reduce eccentricity due to the homogenization of the material flow during forming. This creates the required microstructures in the material.
However, not only a service partner for your plants and machines, SMS group is also there for your staff. Furthermore, You can enroll on standardized and individual training programs designed for you by our SMS TECademy. That ensures you strengthen your competence as a plant owner.
Whether you require one-off equipment checks, continuous condition monitoring, remote service, or regular plant inspections: our service experts will take care of it all. You can even outsource your complete maintenance operations to us. This ensures excellent plant availability plus best production results.
When the spare parts you need are no longer available or the new generation is not 100% compatible, you risk plant standstills. That's why SMS group constantly monitors the availability of all parts and, where necessary, offers modern alternatives - even for parts from third-party suppliers. This ensures competitiveness and full productivity over the entire life cycle of your plant.
Even plants "built to last" need to be critically examined from time to time, because markets and production processes are continuously evolving. Together with you, our service experts will find the best revamp options for your requirements. Once again bang up to date, your plants will then be ready to bolster your strong position on the market.