Wallchart of the steel-carrying-up-phase rating standard 11

1 Standard GB/T34891-2017 standard technical conditions for thermal treatment of high-carbon chromium bearing steel parts on scroll axes

First Level Chart Resilient tissue (magnification: 1000X)

Level 2 Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Pyg-Py-Py-Pyro-Pyro-Pyro-Py-Pyro-Pyro-Pyro-Pyro-Pyro-Pyro-Py-Py-Py-Py-Py-Py-P-Py-P-Py-Py-Py-P-P-P-P-P-P-P-E-E

Level III Tranquillium back (magnifying: 500X)

Level IV Net carbonated (magnification multiple: 500X)

Figure V Bedhammerium (magnification multiple: 500X)    

2 Rolling bearing parts Rating of carbon seepage thermal treatment microorganization (scale 1-6) (JB/T8881-2011)

1 Coarse carbonated carbon layer                     (Class 1-3)

2 Carbon-sink netting                     (Class 1 ~ 4)

3 High-temperature carbon-leaking backfire micro-organization           (Class 1-6)

4 Carbon seepage microorganism (scale 1-5) for direct carbon seepage

5 Carbon seepage micro-organization of the second gillfire       (Class 1-5)

6. Heart and Micro-Synthetic Organization                           (Class 1 ~ 4)