12th Tooling Conference & Exhibition - Tooling 2022

In this study, different carbide morphologies of Cr-Mo-V powder metallurgical tool steels with the similar composition were compared. It is known that carbide size, height and orientation are very effective on wear properties such as galling and abrasive wear. Carbides can also act as stress points for crack initiation. In our study, larger carbides produced via new innovative process...

In this investigation, profiled high interstitial austenitic stainless steel parts were burnished on a profile rolling machine and afterwards the wear behavior was analyzed in a
melt of glass-reinforced polypropylene. Wear and corrosion resistance are significant properties of steel parts in plastics and food industries. The high work hardening ability of the
stainless steel enables...

In cold work applications, tool steels with high carbide contents are mainly used as cutting and stamping tools. The efficiency of cold forming processes depends on the tool life, which is limited by wear resistance and fatigue strength. Forming tools often fail due to fatigue fracture since fatigue design is usually not performed. Microstructural and statistical understanding of the...

Meeting increasing requirements concerning part quality and process profitability despite difficult-to-machine materials is only possible with a deep process understanding. In this context, knowledge about the process temperature is of decisive im-portance, since it affects material properties such as hardness or forming behavior as well as chemical and physical interac-tions between tool,...

In the surface-critical stands in hot rolling mills, so-called indefinite-chill alloys are used as shell materials for the work rolls. The microstructure of these materials consists of cementite, graphite as well as different other carbides which are embedded in a martensitic/bainitic matrix. In the past ten years, indefinite-chill materials were intensively developed to meet the higher...

The constantly increasing requirements for tool materials continuously set new challenges concerning loading capacity, resistance to damage and crack propagation as well as the characterisation of these properties, especially at elevated temperatures that arise e.g. at cutting edges when cutting metal workpieces. Essential progress in the field of tool technology and knowledge-based selection...

The purpose of this study is to assess the impact of different combinations of cryogenic treatments and tempering regimes on tribological properties of Cr-V tool steel against a CuSn6 counterpart. Dry sliding wear experiments were performed using a pin-on-disk tribometer according to the Taguchi method. Tribological behaviour is investigated under four process parameters at mixed levels:...

Steels for production of frames for plastic molds frequently need to be stainless, while at the same time require large amounts of machining. Machinability as a crucial property can be enhanced by the addition of sulfur, resulting in the formation of favorable sulfides, which in turn can deteriorate mechanical properties and resistance to corrosion. The detrimental effect on mechanical...

Usually, tool steels are used in quenched and tempered condition. Due to the phase transition from austenite to martensite and the volume change during the transformation, controlling of distortion might be a challenge. The end user’s demand for high hardness of the final tool leads to a poor machinability.
Engineering steels with bainitic structure are generally based on a low alloying...