ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
C21D0001000000 General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering 1
C21D0001020000 Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation 1
C21D0001040000 with simultaneous application of supersonic waves, magnetic or electric fields 1
C21D0001060000 Surface hardening 1
C21D0001080000 with flames 1
C21D0001090000 by direct application of electrical or wave energy; by particle radiation 1
C21D0001100000 by electric induction 1
C21D0001180000 Hardening (C21D0001020000 takes precedence);;Quenching with or without subsequent tempering (quenching devices C21D0001620000) 1
C21D0001190000 by interrupted quenching 1
C21D0001200000 Isothermal quenching, e.g. bainitic hardening 1
C21D0001220000 Martempering 1
C21D0001250000 Hardening, combined with annealing between 300 ; C and 600 C, i.e. heat refining ("Vergüten") 1
C21D0001260000 Methods of annealing 1
C21D0001280000 Normalising 1
C21D0001300000 Stress-relieving 1