D812 钴基2号堆焊焊条 D802 钴基1号堆焊焊条

发布时间：2026-09-05 04:49:03

品牌	斯米克	型号	D802 钴基1号堆焊焊条
类型	堆焊焊条	材质	钴基
药皮成分	石墨型

　　标准：

　　符合GB EDCoCr-B-03

　　相当AWS ECoCr-B

　　说明：

　　D812是钛钙型药皮，中碳的钴铬钨合金为焊芯的堆焊焊条。可交直流两用，电弧稳定，渣复盖性好，成型美观。堆焊层具有良好的耐蚀及耐磨性能，在600℃以上的高温中也能保持这种特性。D812在钴铬钨堆焊合金中具有中等硬度，耐磨性较D802好，但塑性较D802稍差。用硬质合金刀具可进行切削加工。金相组织为奥氏体和共晶体。

　　D812 is a titanium-calcium type coating, a medium-carbon cobalt-chromium-tungsten alloy surfacing electrode with a core. It can be used for both AC and DC, stable arc, good slag coverage, and beautiful shape. The surfacing layer has good corrosion resistance and wear resistance, and can maintain this characteristic even at high temperatures above 600°C. D812 has medium hardness among cobalt-chromium-tungsten surfacing alloys, and its wear resistance is better than D802, but its plasticity is slightly worse than D802. Carbide cutting tools can be used for cutting. The llographic structure is austenite and eutectic.

　　用途：

　　用于高温高压阀门，内燃机阀、化纤剪切刀刃口、高压泵的轴套筒和内衬套筒、热轧型孔等堆焊。

　　Used for surfacing welding of high temperature and high pressure valves, internal combustion engine valves, chemical fiber shear blades, shaft sleeves and lining sleeves of high pressure pumps, and hot rolled holes.

　　熔敷金属化学成分（%）

　　CMnSiCrWCoFe其他元素总量

　　1.0~1.70≤2.0≤2.025.0~32.07.0~10.0余量≤5.0≤4.0

　　堆焊层常温硬度值

　　HRc=45~50

　　以上化学成分及常温硬度指堆焊三层以上堆焊金属。

　　The above chemical composition and normal temperature hardness refer to the surfacing welding of more than three layers of surfacing l.

　　参考电流：AC或DC

　　焊条直径（mm）3.24.05.0

　　焊接电流（A）90~130140~170170~200

　　注意事项：

　　1. 焊前焊条须经150℃烘焙一小时。

　　2. 为了避免产生裂缝，根据工件大小和母材种类，须经过200~400℃的预热。并宜采用小电流短弧焊接。焊后应将工件立即放入干燥和预热的砂缸或草灰中缓冷。

　　3. 由于电弧焊的温度较气焊高，故稀释率也较气焊大，因此一般只在难于进行气焊或为提高焊接效率时才考虑电弧焊。

　　标准：

　　符合GB EDCoCr-A-03

　　相当AWS ECoCr-A

　　说明：

　　D802是钛钙型药皮，低碳钴铬钨为焊芯的堆焊焊条。交直流两用，电弧稳定，成型美观。堆焊层在600℃以上的高温中仍能保持良好的耐蚀、耐磨性能。D802是在钴铬钨堆焊合金中，碳及钨含量较低，韧性的一种，能承受在冷热条件下的冲击，产生裂缝的可能性小，用硬质合金刀具容易切削加工。金相组织为奥氏体和共晶体。

　　D802 is a surfacing electrode with titanium calcium coating and low carbon cobalt chromium tungsten as the core. AC and DC dual purpose, stable arc, beautiful shape. The surfacing layer can still maintain good corrosion resistance and wear resistance at high temperatures above 600 ℃. D802 is the cobalt-chromium-tungsten surfacing alloy with lower carbon and tungsten content and the best toughness. It can withstand the impact under cold and hot conditions, has a small possibility of cracking, and is easy to cut with cemented carbide tools. . The llographic structure is austenite and eutectic.

　　用途：

　　用于要求在650℃高温下工作能保持良好耐磨及耐蚀性能的场合。例如，堆焊高温高压阀门、热剪切刀刃、热锻模等冲击和加热交错的地方。

　　It is used in occasions that require good wear resistance and corrosion resistance when working at a high temperature of 650℃. For example, surfacing welding of high temperature and high pressure valves, hot shear blades, hot forging dies and other places where impact and heating intersect.