The cross sectional shape of the welding rod
Various electrode coating has a certain thickness, usually the drug skin quality factor "electrode drug skin share in the electrode mass ratio.
Drug skin quality silk-foot (4): drugs with drug skin leather, quality components the Hui core quality muscle
- Skin-like drug quality factor of 3596? 55 it varies with the Welding Electrode  drug leather types and the use of purpose, mention Gao welding efficiency Gao efficiency of a large number of iron, iron powder electrode in the drug skin or through drug skin-doped some alloy welding electrodes, drug skin quality factor can be more than 10 096.
The following describes the role and composition of the weld core and drug skin.
Welding core role is mainly conductive to the formation of the arc at the electrode end. At the same time, the core of welding rely on Arc hot melt, cooling form has a certain composition of the deposited gold dust.
At present, the electrode of the hundreds of varieties, but for manufacturing electrode welding core But dozens of species. In order to ensure the deposited gold dust has the required alloy composition, generally through two blending gold method to achieve: one is the use of low-carbon steel core, the transition through the drug skin, this method is mainly used in low-carbon steel electrode, low- alloy steel electrodes and welding electrodes, etc.; Another is the use of the alloy core, drug skin to supplement a small amount of alloy cable, this method is mainly used in stainless steel welding rod, non-ferrous metal electrode and Gao alloy steel electrodes. Of course, this distinction is not absolute, the use of low-carbon steel core, can also be made of stainless steel Welding Rod. But no matter what kind of case, the composition of the solder core directly affect the composition and performance of the deposited metal and therefore requires welding core to try to reduce the harmful content of the cord. With the development of metallurgical industry, butt the control of the content of harmful elements in the core of increasingly stringent requirements, in addition to the usual 3,? Some electrode has asked the welding core control such as, holes, 311.
In addition to the cast welding core, core welding, generally in the open hearth, converter, or electric smelting, melting certain alloys can also be used in high frequency furnace and cast ingot after hot rolling, and then pull to the desired size cut off from.