Review on effect of flux composition on its behavior and bead geometry in submerged arc welding (SAW)
Review on effect of flux composition on its behavior and bead geometry in submerged arc welding (SAW)
复制标题
埋弧焊（SAW）中焊剂成分对其行为和焊道几何形状影响的综述
DOI：
10.5897/jmer2013.0284
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Brijpal Singh
中科院分区：
文献类型：
--
作者：
Brijpal Singh
焊剂的性能是由其成分的物理和化学性质决定的。所选择的助焊剂应具有良好的焊接性能和所要求的焊头几何形状。接头的力学性能不仅取决于其组成，还取决于焊剂的几何形状、尺寸和物理化学性质。这些性能包括表面张力、粘度、热容量、热膨胀系数、晶粒尺寸等。助焊剂的这些性能主要影响助焊剂的性能、焊头形状和尺寸、焊接速度、载流能力、对熔融金属的保护、电弧稳定性、熔渣可脱性、毛细、表面张力和粘度。焊剂的各种成分对焊接工艺性能和焊头尺寸有重要影响。我们需要了解埋弧焊中焊剂的物理性质和行为。特定助焊剂添加量对电弧稳定性、粘度、毛细性、熔渣可脱性和焊缝形状的影响有待进一步研究。可以推断，只有考虑焊剂的物理化学特性，如熔渣粘度、表面张力、电弧稳定性和熔渣可脱性、毛细性和焊透性，才能得到理想的几何形状和成分的焊缝。因此，在设计焊剂或选择焊接工艺参数时，应仔细控制或选择上述特性。
Performance of a welding flux is decided by the physical and chemical properties of its constituents. The flux selected should show a good welding behavior and the required weld bead geometry. The mechanical properties of a joint are not only decided by its composition but these also depends on bead geometry, dimensions and physico-chemical properties of fluxes. These properties include surface tension, viscosity, heat capacity, thermal coefficients of expansion, grain size etc. These properties of fluxes primarily affect the flux behavior, bead shape and size, welding speed, current carrying capacity, protection of molten metal, arc stability, slag detachability, capillarity, surface tension and viscosity. Various constituents of a welding flux have major influence on the performance of welding processes and weld bead dimensions. We need to understand the physical properties and behavior of fluxes during submerged arc welding. The influence of specific flux additions on arc stability, viscosity, capillarity, slag detachability and weld bead shape need to be better characterized. It can be inferred that we cannot obtain the weld of desired geometry and composition until we consider the physico-chemical characteristics of flux like slag viscosity, surface tension, arc stability and slag detachability, capillarity and weld penetration. So, while designing the flux or during selection of welding process parameters the above characteristics should be carefully controlled or selected.
Key words: Submerged arc welding, bead width, reinforcement, weld penetration, bead morphology.