Product name:KF-810/KW-420
 
Classification:-
 
 

  1. KW-420 is a submerged arc solid wire that matches with KF-810 neutral flux to produce the weld metal of AISI 420 martensitic stainless steel.
  2. It offers good slag removal and excellent crack resistance.
  3. It is suitable for the reclamation of continuous casting rolls, blast furnace dome, print rolls and gudgeons.

 

Welding Instruction

( 1 ) Please preheat at 200~250°C when the carbon content of the carbon steel work piece is over 0.8 wt% or the low alloy steel work piece is over 0.35wt%.

( 2 ) The preheat and interpass temperatures should be controlled between 200-250°C for massive work pieces and high curvature surfaces to prevent weld cracking caused by high stress.

Typical Chemical Composition of Weld Metal (wt %)

C

Si

Mn

Cr

0.150

0.33

1.20

13.10

Typical Hardness of Weld Metal

 

1st layer

2nd layer

3rd layer

4th layer

HardnessHRC

43

46

47

48

Size and Suggested Operating Range (DC+)

Size (mm)

Voltage V

CurrentA

ESO mm

3.2

28~32

350~450

25~30


No.8, Luke 3rd Rd., Luzhu Dist., Kaohsiung City 821, Taiwan (R.O.C.)      TEL:886-7-6955155      FAX:886-7-6955166

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