Equivalent to China Standard 相當(dāng)國(guó)標(biāo)
Characteristics & application 特性和用途
Equivalent to AWS 相當(dāng)AWS
D 802
EDCoCr-A-03
HRc38-47. Resistance to heat, wear and corrosion. Hardfacing of high temperature part such as the edge of thermo-cutter. HRc38-47,耐熱、耐蝕、耐磨。堆焊高溫工件如熱剪切刀刃
ECoCr-A
D 812
EDCoCr-B-03
HRc45-50. Resistance to heat, wear and corrosion. Hardfacing of high temperature part such as internal-combustion engine valve. HRc45-50,耐熱、耐蝕、耐磨。堆焊高溫工件如內(nèi)燃機(jī)閥
ECoCr-B
D 822
HRc≥53. Resistance to Wear and heat, bad shock resistance. Hardfacing of rotating blade wheel of boiler. HRc≥53,耐熱、耐磨,但抗沖擊性差。堆焊鍋爐旋轉(zhuǎn)葉輪
D 832
EDCoCr-C-03
HRc≥50. Wear and heat resistance. Hardfacing of high temperature part such as hot-rolling guided way. HRc≥50,耐熱、耐磨。堆焊高溫工件如熱軋導(dǎo)軌
ECoCr-C
D 842
EDCoCr-D-03
HRc28-38. Corrosion and thermo-fatigue resistance, work harding. Hardfacing of hot forging die. HRc28-38,耐蝕、抗熱疲勞,具有加工硬化性。堆焊熱鍛模
D842鈷基堆焊焊條 說(shuō)明:鈷基4號(hào)低碳鈷鉻鎢合金焊芯的堆焊焊條,采用直流反接,堆焊金屬在800℃仍能保持良好的看熱疲勞性和耐蝕性。 用途:用于高溫條件下承受沖擊和冷熱交錯(cuò)的工件堆焊,如熱鍛模,閥門(mén)密封面等,具有良好的性能。 熔敷金屬化學(xué)成分/% C Si Mn Cr Fe W 其他 Co 0.20~0.50 ≤2.00 ≤2.00 23.0~32.0 ≤5.00 ≤9.50 ≤7.00 余量