Tube machining

Weld seam and tube machining

Tube weld edge milling and tube end machining

Tube weld edge milling

New pipeline projects and investments by the chemical industry have led to an increasing demand worldwide for special tubes. In order to be successful in a competitive market, tube manufacturers are opting for high-performance products which are optimally tailored to their individual intended use.

Plated materials are increasingly being used in this domain, where different metals are assembled to form a composite material by special rolling processes. These materials place particular demands on milling.

The Walter tool range for tube machining comprises tools for preparing the weld seams and deburring the weld seams inside and out, and a tooling system for machining tube ends. Clean, well prepared edges are the deciding factor here.

Tool bodies
Essentially two types of basic tool bodies are used: Monobloc milling cutters with fixed insert seats and modular milling cutters with adjustable or replaceable segments (known as cartridge milling cutters). This allows different kinds of profiles to be produced.

Profiles I, Y, X, X + I

​Modular milling system
There are generally two basic bodies available for this system (cutting direction left and right), with cartridges in neutral position. The cutting contour, angles, chamfers and cutting geometry are determined by the shape of the cartridges. The cutting profile can be changed quickly and easily if needed by switching the cartridges. In the event of damage, the cartridges are simply replaced without additional adjustment work.

Tube end machining

New pipeline projects and investments by the chemical industry have led to an increasing demand worldwide for special tubes. In order to be successful in a competitive market, tube manufacturers are opting for high-performance products which are optimally tailored to their individual intended use.

Plated materials are increasingly being used in this domain, where different metals are assembled to form a composite material by special rolling processes. These materials place particular demands on milling.

Two machining concepts are used for the front-face tube end machining: 1. Circular interpolation 2. Facing

​As a result of the machining operation for facing the tube ends and the materials that are used today, there is a tendency towards producing long chips. Controlled chip breaking is important and is achieved by means of innovative cutting edge geometries in conjunction with the latest cutting tool materials and adapted insert holders.

The aim of the machining is short cycle times along with optimal chip breaking and maximum cutting edge tool life. This means incredibly high machining reliability coupled with the highest possible cost efficiency.