| 牌號(hào) | ECoCr-C |
| W73001 | |
| 對應(yīng)標(biāo)準(zhǔn) | AWS A5.13/A5.13M-2010
堆焊焊條規(guī)范 保護(hù)金屬電弧焊 Specification for Surfacing Electrodes for Shielded Metal Arc Welding |
| 歸類 | 合金鋼 |
| 標(biāo)簽 | 鈷基堆焊焊條 |
| 說明 | Characteristics. This alloy’s deposits have a higher carbide content (19%) than those made using either ECoCr-A or ECoCr-B electrodes. In fact, the composition is such that primary hypereutectic carbides are found in the microstructure. This characteristic gives the alloy higher wear resistance, accompanied by reductions in the impact and corrosion resistance. The higher hardness also means a greater tendency to stress crack during cooling. The cracking tendency may be minimized by closely monitoring preheating, interpass temperature, and postheating techniques. While the cobalt–chromium deposits soften somewhat at elevated temperatures, they normally are considered immune to tempering. Applications. Weld metal deposited by ECoCr-C electrodes is used to build up mixer rotors and items that encounter severe abrasion and low impact. |
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