1 For regrinding wearing punch tip. Please do not regrind too much, in order to prevent coating layer from exfoliation.2 The tip edge may be in shape R after TiCN coating. Please take this into consideration when products are use for precision machining.The wearability of punches is dependent on their materials, but the cost of materials increase along with their improved wearability. As a result, customers should select appropriate punches based on the consideration of product precision, maintenance cost and total cost of die set. Punch Industry has standardized 5 types of materials 【SKD11】,【SKH51】,【SKH40 （P/M high-speed steel）】,【carbide】,【Carbide super corpuscle】 according to different machining requirements, in order to extend the range of selection. With the requirements of material diversification, precision improvement and cost reduction, coating punches with good wearability and high cost performance is becoming more and more popular. Advantages of TiCN coating Feature of TiCN coatingRange of TiCN coating（Table 3）Notes for TiCN coating1110The conventional surface treatment methods are listed in Table 1, and can be selected for different purpose. TiCN coating is applied by physical vapor deposition（PVD）in Punch Industry, in order to assure the wearability of punches for punching. Physical vapor deposition（PVD）is applied in low processing temperature, and it will not affect the hardness of quenched / tempered base material or the finishing profile. So, PVD method is applicable to all materials collected in this catalog to optimize selection. With the features of high rigidity, uniform thickness and high finish, TiCN coating can greatly improve the wearability of products while maintaining profile dimensions, in order to extend the lifespan. The features of Punch Industry's TiCN coating are listed in Table 2.TiCN coating must be applied to ejector punches before assembly. Features of colored parts ・Complete coating area In this area, coating is applied according to required standard ・Incomplete coating areaIn this area, incomplete coating is applied （coating layer thickness≦1μm）Table 1 Types of surface treatmentTypeQuenchingNitride infiltration, nitridingShot peeningChemical treatmentElectroplatingChemical vapor deposition（CVD）Physical vapor deposition（PVD）Plasma sprayCoatingSurface modificationCoatingTable 2 Features of TiCN coating DescriptionRemark2～3μmSingle-side valueItemCoating layer thicknessThe tested hardness of base Coating material is about HV1800 （testing hardnessforce：50g）Adhesion30N or moreScratch testFriction coefficient0.6 or lessAllowable temperature2700HV or more （coating layer only） 400℃ColorDark grayMethodApplicable rangeDie parts, tools, machinery parts, wear-resistant partsMetal products, chemicals, etcDie parts,tools, semiconductors, and electronic equipments, etc.Die parts, tools, machinery parts, etc.Machinery parts, rollers, etc.Bicycles, household appliances, etc.Outline of friction wear testLoad 10N,test ball SUJ（φ6mm）,radius of gyration：2mm, circumferential speed：500spm, time：20minIntroduction to TiCN Coating
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