ZHEJIANG YONGXIANG CABLE GROUP CO,.LTD

ZHEJIANG YONGXIANG CABLE GROUP CO,.LTD

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Name: Jason
Tel: 86-571-82481838
Fax: 86-571-82473180
E-mail: sales@weldingsolder.com
Add: Yongxiang Road Pu Er Village Linpu Town Xiaoshan District Hangzhou City Zhejiang Province China

EFeCr-A1

EFeCr-A1
Product name : EFeCr-A1
Item : D667
Details :
 

D667

According with GB EDZCr-C-15
Corresponding with AWS  EFeCr-A1


Introduction: D667 is a kind of high-chrome cast iron surfacing electrode with low-hydrogen natrium type coating and high-chrome alloy cast iron core wire. DCRP (Direct Current Reversed Polarity). The surfacing layer has excellent wear-resistance, corrosion-resistance and atmospheric corrosion-resistance below 500℃. The hardness of the surfacing layer will decrease drastically over 500℃.


Uses: Used for surfacing welding on occasions requiring intense wear-resistance, corrosion-resistance and atmospheric corrosion-resistance, such as axle bushes of centrifugal cracking pumps in petroleum industry, parts of mining crushers, valve bonnets on diesel engines, etc.


Chemical Composition of Deposited Metal (%)
Chemical Composition
C
Mn
Si
Ni
Cr
Total Quantity of Other Elements
Guarantee Value
2.50~5.00
≤8.00
1.00~4.80
3.00~5.00
25.0~32.0
≤2.00

Hardness of Surfacing Layer: HRC≥48

Reference Current (DC+)
Electrode Diameter(mm)
φ3.2
φ4.0
φ5.0
φ5.8
Welding Current (A)
90~130
120~160
140~190
150~210

Instructions:
1.The electrodes must be baked under 300-350℃ for an hour before welding.
2.The weldments must be preheated under 500-600℃, and the oxide, etc. on the surfaces of the work pieces should be cleared away before surfacing welding.
3.Every time, the surfacing length is suitable in the range of 50-70mm.
4.After welding, the work pieces should be tempered under 600-700℃ for an hour before slow cooling. They can also be put into a dry and preheated sand box or plant ash to be cooled slowly immediately after welding
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