About Dies and Taps for Newbies
For Materials
Hand dies and Taps material usually at Carbon steel(T8,T10)/Alloy Steel(9CrSi,Cr-V)/High Speed Steel(HSS:W6mo5Cr4v2)
Price HSS>Alloy Steel>Carbon Steel,Alloy Steel is the most Popular One
Machine Dies and Taps Material Usually at Normal HSS(W6Mo5Cr4v2):M2,HSS-E/HSS-CO(W6Mo5Cr4V2Co5):M35,HSS-E High Co(W2MoCr4VCo8):M42,Power Metallurgy HSS,Dies Not Use Power Metallyurgy HSS Much conside the cost,
2.Machine Dies and Taps almost not sell By Sets.
3.Hand Taps only Have Straight Flute,Only Machine Tap Have other type Flutes
4.Hand Taps Usually Not do Coatings,But some do Black Oxide,Machine Taps Have Tin Coating(gold color), TiCn Coating （Gray Black Color), AlTiN Coating(Purple Black Color),Machine Taps some also do Black Oxide,Dies usually not do Coating,Usually Original Color or Black Oxide,
5.Production Process:
Hand Tap Production: Raw Material Cutting-Spheroidizing Annealing-Turning(Shank,Square End，OuterDiameter)-Flute Milling(Straight Flute)-Thread Rolling-Relief Grinding&cutting Edge Processing-Heat Treatment(Quenching+Tempering)-Finishing(Cylindrical Grinding,Size Calibration)-Damagnetization-Black Oxide Surface Treatment-Cleaning&Rust Prevention-Quality Inspection(hardness,Thread Gauge,Size)-Marking&Packaging
Machine Tap Production:Raw Material Cutting-Spheroidizing Annealing-CNC Turning-Flute Milling-Thread Grinding-Relief Grinding-Vacuum Heat Treatment-Precision Finishing-Demagnetization-PVD coating-Cleaning&rust Prevention-Precision Inspection-Marking&packaging
Hand Dies Production: Blank Cutting-Turning-Drilling Chip Holes-Milling Slots-Internal Thread Processing-Heat Treatment-Surface Gring-Demagnetization-Black Oxide-Cleaning&Rust Prevention-Thread Inspection-Marking-Packaging
Machine Dies Production:Blank Cutting-CNC Turning-Chip Hole Drilling-Slot Milling-Internal Thread Grinding-Vacuum Heat Treatment-Surface Grinding-Demagnetization-Black Oxide-Cleaning&Rust Prevention-Precision Inspection-Marking&Packaging