| trade- | equivalent to china standard | characteristics & application | equivalent to aws | ||||
hard-surfacing 硬 面 堆 焊 | d 667 | edzcr-b-15 | hrc≥48. resistance to wear, gas corrosion and oxidation. hardfacing of blast furnace hopper and cracker part. | |||||
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. | 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. | ecocr-b | |||||
d 822 | hrc≥53. resistance to wear and heat, bad shock resistance. hardfacing of rotating blade wheel of boiler. | |||||||
d 832 | edcocr-c-03 | hrc≥50. wear and heat resistance. hardfacing of high temperature part such as hot-rolling guided way. | ecocr-c | |||||
d 842 | edcocr-d-03 | hrc28-38. corrosion and thermo-fatigue resistance, work harding. hardfacing of hot forging die. |
| |||||
category 类 别 | trade 牌 号 | chemical composition 主要成份(%) | characteristics & application 特性和用途 | equivalent to aws 相当aws | ||||
hardfacing 硬 面 堆 焊 | s 101 | c3 cr28 ni4 | hrc48-54. resistance to wear, gas corrosion and oxidation. hardfacing of bucket tooth and case pump. | |||||
s 111 | c1 cr29 w5 | hrc38-47. resistance to wear and corrosion at high-temperature. hardfacing of high temperature and pressure valve. | ecocr-a | |||||
s 112 | c1.5 cr29 w8 | hrc45-50. resistance to wear and corrosion at high-temperature. hardfacing of valve and hot-rolling pass. | ecocr-b | |||||
s 113 | c2.5 cr30 w17 | hrc≥55. wear and heat resistance at high temperature, bad shock resistance. hardfacing of screw charging carriage. | ||||||
s 114 | c2.5 cr30 w12 | hrc≥53. wear and heat resistance at high temperature, bad shock resistance. hardfacing of three-cone bit. | ecocr-c | |||||
d802钴基堆焊焊条
型号：edcocr-a-03
说明：钴铬钨合金焊芯的钴基堆焊焊条，采用直流反接，堆焊金属在650℃工作仍能保持良好的耐磨性和耐腐蚀性。
用途：用于在650℃左右工作仍能保持良好的耐磨性和耐腐蚀性的场合，或承受冲击和冷热交错的部位，如堆焊高温高压阀门及热剪刀刃等。
熔敷金属化学成分/%
c 0.7-1.44 si≤2 mn≤2 cr 25-32 fe≤4 w 3-6 其他≤4 余量为co堆焊硬度hrc：≥40
d812钴基堆焊焊条
型号：edcocr-b-03
说明：钴铬钨合金焊芯的钴基堆焊焊条，采用直流反接，堆焊金属在650℃工作仍能保持良好的耐磨性和耐腐蚀性。
用途：用于高温高压阀门、高压泵的轴套筒和内衬套以及化纤设备的斩刀刃口等。熔敷金属化学成分/%
c 1-1.7 si≤2 mn≤2 cr 25-32 fe≤5 w 7-10 其他≤4 余量为co
堆焊硬度hrc：≥44
d822钴基堆焊焊条
型号：edcocr-c-03
说明：高碳钴铬钨合金焊芯的钴基堆焊焊条，采用直流反接，渣覆盖性好，成形美观，具有优良的耐磨、耐热、耐腐蚀性，在650℃高温也能保持这些特性。
用途：用于牙轮钻头轴承、锅炉的旋转叶轮、粉碎机刃口、螺旋送料机等磨损部件的堆焊。
熔敷金属化学成分/%
c 1.75-3 si≤2 mn≤2 cr 25-33 fe≤5 w 11-19 其他≤4 余量为co堆焊硬度hrc：≥53
d842钴基堆焊焊条
型号：edcocr-d-03
说明：钴基4号低碳钴基铬钨合金焊芯堆焊焊条，采用直流反接，堆焊金属在800℃仍能保持良好的抗热疲劳性和耐蚀性。
用途：用于高温条件下承受冲击和冷热交错的工件堆焊，如热锻模，阀门密封面等，具有良好的性能。
熔敷金属化学成分/%
c 0.5-0.5 si≤2 mn≤2 cr 23-32 fe≤5 w≤9.5 其他≤7 余量为co堆焊硬度hrc：28-35
d852钴基堆焊焊条 型号：edcocr-e-04
说明：用于耐高温磨损堆焊焊条,工作温度1100℃,具有红硬性,抗烈性.也可用于高温,高压阀门热段模等,同时经受冲击和高温,耐蚀的部件. hrc≥44
d862钴基堆焊焊条 型号：edcocr-e-05
说明：适用于高温磨性磨损及细颗粒小角度冲蚀磨损工况。单层堆焊即可满足性能要求，最高工作温度1000℃,堆焊层硬度：20℃--hrc:64-66、工作温度600℃--hrc：48-52、工作温度800℃--hrc：38-42典型应用领域、工况及部分，炼铁、炼焦、烧洁、水泥等工作领域存在高温磨损的机械设备。
用途：用于堆焊高温工件下服役的烧洁单辊破碎机齿冠篦板及高炉旋转布料溜槽，耐磨效果显著。
