D687 Hardfacing Welding Electrode
Contact Info
- Address:河北省邢臺市信都區(qū)永康街533號, Zip:
- Contact: 韓吉英
- Tel:13833921539
- Email:2891465062@qq.com
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D687 Hardfacing Electrode
GB/T 984 EDZCr-D-15
Suitable for hardfacing applications requiring strong wear resistance, such as cone bit shafts, coal augers, elevator buckets, crusher rolls, pump casings, mixer blades, etc.
A low-hydrogen sodium-type coated Cr-C type cast iron hardfacing electrode with stable arc, minimal spatter, low slag content, and easy slag removal. The hardfaced layer is difficult to machine even with alloy cutting tools and can only be ground. The microstructure consists of martensite and coarse composite carbides.
DC reverse polarity (DC+)
Chemical Composition of Deposited Metal (%)
| Test Item | C | Mn | Si | Cr | B | Total Other Elements |
| GB/T Standard | 3.00～4.00 | 1.50～3.50 | ≤3.00 | 22.00～32.00 | 0.50～2.50 | ≤6.00 |
| Example Value | 3.75 | 2.30 | 2.35 | 29.00 | 1.20 | —— |
Hardfaced Metal Hardness
| Test Item | HRC (4 layers or more) |
| GB/T Standard | ≥58 |
Reference Current
| Electrode Size (mm) | Φ3.2 | Φ4.0 | Φ5.0 |
| Welding Current (A) | 90～130 | 120～170 | 160～210 |
1. Drying requirement: Electrodes must be baked at 300～350℃ for 1 hour before use and used while still warm.
2. Preheating temperature for hardfacing workpiece:
400～600℃,
and remove rust, oil, oxides, etc., from the workpiece.
3. The length of each hardfacing pass should preferably not exceed 50～70mm.
4. After welding, the workpiece should be tempered at 600～700℃ for 1 hour and then slowly cooled, or immediately placed in a dry and preheated sandbox or in grass ash for slow cooling.
| Industry Category: | Hardware & Tools/Welding Materials & Accessories/Welding Rods |
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