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• SPK Cutting Tools
• Applications
• Hard Part Machining
• Cutting Materials

Due to unbeatable wear resistance hardness and hot hardness SPK-Ceramics established itself as an ideal cutting material for mass production of cast iron parts, hard rolls and hardened steel. Machining speed is increased, production time shortened, output, productivity and efficiency are highly improved.

A wide range of products for SPK-WURBON^® is completing the range of cutting materials for high performance machining of cast iron and hardened steel.

SPK-Cermets achieve best surface qualities and dimensional accuracy of the work pieces in finishing steel. They are ideal suited for finishing and fine finishing operations with low chip cross sections and uniform depths of cut.

SH 2
Grade offering an extremely homogenous submicron structure which enables high mechanical and thermal resistance and highly precise cutting edges. Mixed ceramic grade for hard fine machining in continuous cutting.

WBN 575
represents a high-performance grade with excellent wear resistance. Owing to its fine-grained structure, this grade particularly allows for complying with the highest demands in respect of surface quality and dimensional accuracy. It is mainly used for hard turning performed with continuous cutting and high cutting speeds under stable machining conditions. The ideal cutting speed rang for this grade is v_c = 140-250 m/min.

WBN 570
is suited for a wide range of hard machining applications owing to its balanced combination of toughness and wear resistance. It is suited for hard turning performed with continuous cutting, and for machining operations performed with moderate interruptions. For this grade, the ideal cutting speed ranges at v_c = 120-180 m/min.

WBN 560
is particularly suited for hard turning performed from light to moderate interruptions or under unfavourable machining conditions in continuous cutting. It is used with cutting speeds of v_c = 100-160 m/min.

WBN 555
is the top grade for machining operations on hardened steel performed with highly interrupted cuts and using a cutting speed of v_c = 80-160 m/min. It is also used for machining of sintered steel and hard metals.