1. Good weldability, good wetting performance.

2、線內(nèi)松香分布均勻，連續(xù)性好。

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

3、無(wú)惡臭味，煙霧少，不含毒害揮發(fā)氣體。

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

4、卷線整齊、繞線均勻，表面光亮。

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

5、通過(guò)SGS檢測(cè)，不污染環(huán)境

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

1）鉛門(mén)為避免焊接變形，鉛板，防輻射鉛板，廠家直銷 焊接時(shí)采用對(duì)稱焊接（包含對(duì)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）鉛門(mén)焊接過(guò)程中逐道焊縫清渣，除飛濺物，發(fā)現(xiàn)缺陷及時(shí)用角向砂輪打磨，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）鉛門(mén)焊接工作結(jié)束，將焊縫區(qū)及焊接工作位置場(chǎng)地清理干凈，轉(zhuǎn)移到下一焊接節(jié)點(diǎn)。

(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、焊后檢查

4. Post weld inspection

（1）待焊縫冷卻后，進(jìn)行焊縫外觀檢查；

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

（2）焊縫中不得有裂縫，焊縫金屬與母材間完全熔合，所有破口均被填滿；

(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）焊縫不應(yīng)溢流。 一、鉛的熔點(diǎn)很低，為327℃，熱導(dǎo)率也僅為鐵的43%,因此焊接時(shí)要選用溫度低、能率小的熱源。常用的熱源是氫氧焰和氧乙炔焰。

(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、鉛熔化后，熔池表面極易生成一層熔點(diǎn)高達(dá)1525℃的氧化鉛薄膜，妨礙金屬彼此熔合，在焊縫中形成夾渣和邊緣未焊透。

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、鉛的密度較大，密度為11.34g/cm3,熔點(diǎn)低，流動(dòng)性很高，因此橫焊及仰焊時(shí)很困難，若掌握不好，會(huì)使熔化大量墜流。

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、鉛的沸點(diǎn)低，只有1619℃。焊接時(shí)，蒸發(fā)的鉛與空氣中的氧化合，生成有毒的氧化物。因此，施焊過(guò)程中要防止鉛中毒。鉛門(mén)

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、鉛具有很高的變形能力，焊后焊件內(nèi)不會(huì)產(chǎn)生顯著的焊接應(yīng)力及應(yīng)力所導(dǎo)致的裂紋和變形。

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.