Z508 镍铜铸铁焊条 符合GB EZNiCu-1 AWS ENiCu-B
标准：
符合GB EZNiCu-1
相当AWS ENiCu-B
说明：
Z508是镍铜合金（蒙乃尔）焊芯，强还原性石墨型药皮的铸铁焊条。可交直流两用，电弧稳定，操作方便。焊缝金属较软但颜色比较亮，收缩率大，抗裂性比较差，焊缝强度也不高，故不宜用于受力部位和对新铸件有色差要求的焊补。为了防止裂缝，对被焊母材推荐采用150~300℃低温预热，以减小焊接应力。
Z508 is a nickel-copper alloy (Monel) core, cast iron electrode with strong reducing graphite coating. It can be used for both AC and DC, with stable arc and convenient operation. The weld metal is soft but the color is brighter, the shrinkage rate is large, the crack resistance is relatively poor, and the weld strength is not high, so it is not suitable for welding repairs on stressed parts and new castings with chromatic aberration re In order to prevent cracks, it is recommended to use 150~300℃ low temperature preheating for the base material to be welded to reduce welding stress.
用途：
常用于强度要求不高的灰口铸铁气孔及砂眼的补焊。
It is often used for repair welding of gray cast iron pores and blisters with low strength re
熔敷金属化学成分（%）
| C | Si | Mn | Ni | Cu | Fe | S |
| ≤1.0 | ≤0.80 | ≤2.50 | 60.0~70.0 | 25.0~35.0 | ≤6.0 | ≤0.025 |
参考电流：AC或DC
| 焊条直径（mm） | 3.2 | 4.0 | 5.0 |
| 焊接电流（A） | 80~100 | 110~140 | 150~180 |
注意事项：
1. 首先清除焊接部位的油污、砂、水、锈等污物，并视缺陷类型，开坡口、打止裂孔及熔池造型等准备措施。
2. 如填补大的空隙，应先从四周开始堆焊一层，然后向中部逐步填满。
3. 为避免母材熔化过多，减少白口层。施焊中，尽量采用小电流，短弧，窄道，短道，分散分段焊，每段焊道长度一般不超过50mm，待温度降至不烫手时再继续施焊。并且施焊后立即锤击焊缝以松驰应力防止裂纹。
4. 施焊前应将焊条在150℃左右烘焙一小时。
1. First, remove oil, sand, water, rust and other contaminants from the welding part, and prepare measures such as beveling, cracking prevention, and molten pool modeling depending on the type of defect.
2. To fill a large gap, start from the surrounding area by surfacing one layer, and then gradually fill it up to the middle.
3. In order to avoid excessive melting of the base material, reduce the white mouth layer. In welding, try to use small current, short arc, narrow track, short track, dispersed segment welding, the length of each segment of the weld generally does not exceed 50mm, and continue welding when the temperature drops to not hot. And immediately after welding, hammer the weld to relax the stress and prevent cracks.
4. The welding rod should be baked at about 150℃ for one hour before welding.
