Technical Specifications of Valve Materials in China Chemical Composition and Hardness of Deposited Metal (Continued 4)

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Domestic valve material technical standards   Deposited metal chemical composition and hardness (continued 4)

Serial number Electrode model Deposited metal chemical composition,%

Deposit gold

Is a hardness

HRC

(HB)

C Mn Si Cr Ni Mo W V Nb Co Fe B S P

other

element

Total amount

43 EDD-B2- ×× 0.60 ~ 1.00 0.40 ~ 1.00 1.00 3.00 ~ 5.00 - 7.00 ~ 9.50 0.50 ~ 1.50 0.50 ~ 1.50 - - margin - 0.035 0.035 1.00 -
44 EDD-C- ×× 0.30 ~ 0.50 0.60 0.80 5.00 ~ 9.00 1.00 ~ 2.50 0.80 ~ 1.20 0.03 0.04 55
45 EDD-D- ×× 0.70 ~ 1.00 - - 3.80 ~ 4.50 - 17.00 ~ 19.50 1.00 ~ 1.50 0.035 1.50
46 EDZ-A0- ×× 1.50 ~ 3.00 0.50 ~ 2.00 1.50 4.00 ~ 8.00 1.00 - - 0.035 1.00 -
47 EDZ-A1- ×× 2.50 ~ 4.50 - - 3.00 ~ 5.00 3.00 ~ 5.00 - - - 55
48 EDZ-A2- ×× 3.00 ~ 4.50 1.50 2.50 26.00 ~ 34.00 2.00 ~ 3.00 3.00 60
49 EDZ-A3- ×× 4.80 ~ 6.00 - - 35.00 ~ 40.00 4.20 ~ 5.80 -
50 EDZ-B1- ×× 1.50 ~ 2.20 - - 8.00 ~ 10.00 1.00 50
51 EDZ-B2- ×× 3.00 4.00 ~ 6.00 8.50 ~ 14.00 3.00 60  

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Double-Cone Rotary Vacuum Dryer

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Principle:

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