| Product name：KF-810/KCH-31-SX |
| Classification：Alloy Group 1-A |
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- Weld metal is martensite structure with low carbon and low alloy content.
- It can be machined, forged and hardened.
- It is suitable for repairing continuous casting rolls, steel mill rolls, shafts and idlers. It can also be used as the buffer layer for hardfacing.
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Welding Instruction |
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(1) The DC (+) polarity is recommended, but AC polarity can be used in some special automatic application. (2) The dust, oil and moisture of surface should be removed before welding. If weld surface has crack or chip, please use a low hydrogen electrode to fill it before repairing. |
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Typical Chemical Composition of Weld Metal (wt. %) |
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C |
Si |
Mn |
Mo |
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0.150 |
0.50 |
2.70 |
0.60 |
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Typical Hardness of Weld Metal |
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1st layer |
2nd layer |
3rd layer |
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Hardness（HRC） |
18~24 |
24~27 |
29~32 |
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Size and Suggested Operating Range (DC+) |
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Size (mm) |
Voltage （V） |
Current（A） |
ESO（mm） |
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3.2 |
24~27 |
29~32 |
18~24 |
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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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