Why Choose Förster Precision Welding Tables?

The most significant cost factor in the manufacturing of a welded construction is not the welding seam; the average seam takes up only about 15% of the actual work time. 85% of the time needed is non- productive time spent with the precise dimension and angle assignment of the individual parts, in addition to measuring, correcting, aligning, and mechanically reworking the components. A precise method for creating an assembly, in conjunction with suitable clamping fixtures and stops, can result in a variety of significant benefits, even in single part production.
What is the advantage of the slot system?

• The T-slot represents the ideal way to solve the widest variety of clamping tasks with the simplest means (sliding block).
• No spatter-sensitive H7 holes are required for receiving special clamping fixtures, and the functional surface (bearing surface) of the slot is located in a fully protected position (see diagram below).
• Due to the infinite adjustment within the slot, several stop squares can be inserted precisely into the corners of the components in the housing as well as rack and frame manufacturing.
• Försters' patented version of the T-slot between two rails prevents the T-slot from becoming dirty. Rhombic slot blocks can even be inserted from above into T-slots which are already in use.
• Certain areas of the table surface can be opened to insert any protruding parts simply by removing the rails. This has proven to be particularly useful in practice. The rails can also be replaced, protecting the user during particularly heavy welding work.
  

Why cast plates with slots?

Cast plates with slots, like those taken from retired milling machines, have been proving their worth for years in welding shops. Often, however, the plates are not a suitable size, and don't have the right stops and clamping fixtures to work effectively. Försters' modular system makes it possible to assemble cast plates and tooling in the widest variety of forms and enables you to accomplish nearly any task.

• Certainly the most important argument is that most welding processes result in flash that can stick to the table surface.
• Flash sticking to gray cast iron is like the bonding of a normal weld on gray cast iron - it pulls off in the transition zone.
• Gray cast iron ages, and with this aging graphite diffuses to the surface; the surface becomes grayer and grayer, and so the surface is increasingly protected from flash sticking to it.
• An anti-stick product should be applied to the surface until the surface has aged enough; the product penetrates the porous structure of gray cast iron and enriches it due to an increasingly durable protection which builds up. Over time it is no longer necessary to constantly reapply anti-stick
  products.

Additional advantages of gray cast iron are:
The low expansion coefficient in exposure to heat
Improved sound dissipation when positioning parts made from a single casting.