KF-810/KCH-31-SX
Weld metal is martensite structure with low carbon and low alloy content.
KUANG TAI METAL INDUSTRIAL CO., LTD.
廣泰金屬工業股份有限公司
No.20, Gongye Rd., Erzhen, Guantian Dist.
Tainan City 72042, Taiwan
TEL：886-6-6987615 FAX：886-6-6987315
▎Classification
| AWS – | Alloy Group 1-A |
| JIS – | – |
| EN 14700 | UP1-GF-300-P |
| GB – | – |
▎Applications and Features
- 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.
▎Welding Position
▎Welding Instruction
- The DC (+) polarity is recommended, but AC polarity can be used in some special automatic application.
- 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.
▎Applications
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.
▎Typical Chemical Composition of Weld Metal (wt.%)
| C | Si | Mn | Mo |
| 0.15 | 0.50 | 2.70 | 0.60 |
▎Typical Hardness of Weld Metal
| 1st layer | 2nd layer | 3rd layer | |
| Hardness(HRC) | 18-24 | 24-27 | 29-32 |
▎Size and Suggested Operating Range (DC+)
| Size (mm) | Voltage (V) | Current(A) | ESO(mm) |
| 3.2 | 24-27 | 29-32 | 18-24 |
▎Certification
JISZ3323_TCTW08007