1. Good weldability, good wetting performance.

2、线内松香分布均匀，连续性好。

2. The distribution of rosin in the line is uniform and continuous.

3、无恶臭味，烟雾少，不含毒害挥发气体。

3. No bad smell, less smoke, no poisonous volatile gas.

4、卷线整齐、绕线均匀，表面光亮。

4. The winding is neat and even with bright surface.

5、通过SGS检测，不污染环境

5. Through the SGS test, no pollution to the environment

1）铅门为避免焊接变形，铅板，防辐射铅板，厂家直销 焊接时采用对称焊接（包含对焊、立焊、斜焊）；

1) In order to avoid welding deformation, symmetrical welding (including butt welding, vertical welding and oblique welding) is adopted for direct welding of lead door;

（2）铅门焊接过程中逐道焊缝清渣，除飞溅物，发现缺陷及时用角向砂轮打磨，除去缺陷；

(2) During the welding process of lead door, slag shall be removed from each weld and spatter shall be removed. When defects are found, angular grinding wheel shall be used for grinding to remove defects;

（3）铅门焊接工作结束，将焊缝区及焊接工作位置场地清理干净，转移到下一焊接节点。

(3) After the welding work of lead door is finished, the welding area and welding site shall be cleaned up and transferred to the next welding node.

4、焊后检查

4. Post weld inspection

（1）待焊缝冷却后，进行焊缝外观检查；

(1) Weld appearance inspection shall be conducted after weld cooling;

（2）焊缝中不得有裂缝，焊缝金属与母材间完全熔合，所有破口均被填满；

(2) There should be no cracks in the weld, the weld metal and the base metal are fully fused, and all the cracks are filled;

（3）焊缝不应溢流。 一、铅的熔点很低，为327℃，热导率也仅为铁的43%,因此焊接时要选用温度低、能率小的热源。常用的热源是氢氧焰和氧乙炔焰。

(3) The weld shall not overflow. 1、 The melting point of lead is very low, 327 ℃, and its thermal conductivity is only 43% of that of iron. Therefore, the heat source with low temperature and low energy rate should be selected for welding. The common heat sources are oxyhydrogen flame and oxyacetylene flame.

二、铅熔化后，熔池表面极易生成一层熔点高达1525℃的氧化铅薄膜，妨碍金属彼此熔合，在焊缝中形成夹渣和边缘未焊透。

2、 After the melting of lead, a layer of lead oxide film with a melting point of 1525 ℃ is easily formed on the surface of the molten pool, which hinders the fusion of metals with each other and forms slag inclusion and incomplete penetration at the edge of the weld.

三、铅的密度较大，密度为11.34g/cm3,熔点低，流动性很高，因此横焊及仰焊时很困难，若掌握不好，会使熔化大量坠流。

3、 The density of lead is high, the density is 11.34g/cm3, the melting point is low, and the fluidity is very high. Therefore, it is very difficult to weld horizontally and overhead. If we don't master it well, it will cause a lot of falling current.

四、铅的沸点低，只有1619℃。焊接时，蒸发的铅与空气中的氧化合，生成有毒的氧化物。因此，施焊过程中要防止铅中毒。铅门

4、 The boiling point of lead is low, only 1619 ℃. During welding, the evaporated lead reacts with the air to form toxic oxides. Therefore, lead poisoning should be prevented during welding. Lead gate

五、铅具有很高的变形能力，焊后焊件内不会产生显着的焊接应力及应力所导致的裂纹和变形。

5、 Lead has a high deformation ability, and there will be no significant welding stress and crack and deformation caused by stress in the weldment after welding.