D502
Description:
D502 is titanium calcium type 1Cr13 valve welding electrode, AC and DC can be used, the welding process is good. Surfacing metal is 1Cr13 semi-ferritic high-chrome steel. Surfacing layer with air quenching properties, generally do not need heat treatment, hardness uniformity, can also be annealed at 750 ~ 800 ℃ softening, when heated to 900 ~ 1000 ℃ air cooling or oil quenching, can be re-hardened.
use:
This is a versatile welding electrode for surfacing welding of carbon steel or alloy steel shafts and valves with a working temperature below 450 ° C.
Deposited metal chemical composition (%)
| C | Cr | S | P | Other elements of the total |
guarantee value | ≤0.15 | 10.00 ~ 16.00 | ≤0.030 | ≤0.040 | ≤2.50 |
Example value | 0.15 | 11.20 | 0.008 | 0.024 | - |
Surfacing layer hardness:
(Air-cooled after welding) HRC ≥ 40
Reference current (AD, DC)
Electrode diameter (mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 50 ~ 80 | 80 ~ 120 | 120 ~ 160 | 160 ~ 200 |
Precautions:
1. Before welding electrode to be about 150 ℃ baking 1h.
2. Before welding the workpiece should be preheated to 300 ℃ above, after welding different heat treatment can obtain the appropriate hardness.
related articles
The number of clicks:Update time:2017/12/26 14:14:18【print this page】