TWMS/metals is our standard software for the metals industry.
The system optimizes multi-layer slab, coil and plate storage taking into account all applicable product requirements and storage restrictions.
The system avoids unnecessary shifting operations - and the associated risk of damage – while speeding up overall logistics. At the same time it maximizes the use of your storage space and improves safety at work.
The technical warehouse management system TWMS/metals controls and visualizes transport and storage activities in steel and rolling mills and in steel service centers - from continuous casting down to the loading of the finished products on trucks or trains. It guarantees full exploitation of storage capacities – shop-wide, mill-wide or even works-wide – and makes most efficient use of your transport means, such as lifting cranes and cross transfer equipment.
We have developed TWMS/metals specifically for the metals industry. It is designed to handle all types of semi-finished products, transport and handling equipment and storage techniques common in the metals process chain.
What makes storage operations in the slab yard particularly challenging is the fact that a great many parameters need to be observed when stacking slabs. TWMS/metals assigns the storage positions with a view to logistical requirements in order to avoid frequent shifting.
Additionally, it is crucial that the slabs are stacked on one another with utmost precision. Therefore, a key feature of TWMS/metals is its ability to trace the crane positions extremely accurately.
In cases where the standard tracing function is not sufficient - for example, when handling narrow slabs or billets - we use additional information such as the surface profile of the slab stack.
The optimal storage position of a coil depends on a number of aspects, for example, on the available space, the structural and mechanical parameters of the coil rack and on whether the properties of the coils already in the rack would allow another coil to be placed on top of them.
In order to find the most suitable storage position for a coil, TWMS/metals in each case calculates the force vectors that would act on the coil racks. This guarantees that storage of a coil in the desired position will always be safe and stable.
TWMS/metals supports all transport equipment typically in use in a coil yard, for example:
We acquire the current position of the transport equipment by different systems to best suit the situation, for example, by means of radar or by laser sensors.
In steel service centers the variety of products is of course greater and the lot sizes smaller than in rolling mills. But thanks to its scalable architecture, TWMS/metals can also reliably handle such conditions.
What makes the situation in a plate mill challenging is the fact that the stacks of stored plates consist of many more layers than, for example, the stacks in a slab yard. The plates vary in length and sometimes two cranes may be needed to lift and transport them. In these cases perfectly synchronous operation of the two cranes must be guaranteed.
Usually, the plates are lifted by way of magnets. TWMS/metals performs plausibility checks to guarantee that always the correct number of plates are lifted.
3tn has developed a special HMI for crane operators, which allows them to zoom in on the selected stack in a virtual environment and see at a glance all relevant data about each individual plate.
Taking into account the number and type of items to be transported and the current storage situation, TWMS/metals determines the optimal storage places within individual production shops or across complete works, and generates the pertaining transport orders fully automatically.
Apart from the current situation in the storage areas, it considers priorities and restrictions such as:
TWMS/metals plans the routes, taking into account incidents such as temporary blocking of transport equipment or of transport routes.
In the one direction, it communicates with ERP and MES systems and, in the other, with the basic automation system and data from the sensors.
If used with tablet PCs or hand-held terminals, TWMS/metals becomes mobile and suitable for use by crane and vehicle operators.
With a view to Industry 4.0 and digitalization, also in the production and processing of semis the networking and interlinking of information along the entire process chain has and will become increasingly important.
We respond to this trend by providing solutions for efficient shop- or mill-wide warehouse and transport management systems and even fully automatic crane operation and optimization of transports between several works.
Storing slabs, coils and plates as efficiently as possible has always been a challenging endeavor in the steel and aluminum industries.
Product storage and handling are much more complicated than in other sectors or, for example, in high-bay stores. Slabs and coils – often of different sizes – have to be stacked on top of each other. This requires numerous parameters to be observed, for instance, the condition of the product surface and the product weights, all of which determine the forces acting on the stored items and on the equipment and the sinking depths.
Additionally, various restrictions have to be taken into account in order to find the best suited storage position for each individual stored product.
We have developed TWMS/metals specifically for the requirements of the metals industry.
We take our time to
understand their storage needs
We take our time to
understand their storage needs
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