A  Welding Wires with corrosion (oxidation acid, organic acids, cavitation), heat and abrasion resistance. Typically used in power plants, chemical, oil and other equipment and materials. Chromium stainless steel welding poor, should pay attention to the welding process, heat treatment conditions and selection of suitable welding.
 2, chrome 13 stainless steel welding, hardening of large, prone to crack. The use of the same type of chromium stainless steel electrode (G202, G207) welding must be carried out more than 300 ℃ preheat and post weld about 700 ℃, the slow cooling treatment. Weldment can not weld heat treatment, you should make use of chrome-nickel stainless steel electrode (A107, A207).
 3 17 stainless steel, chrome, to improve corrosion resistance and weldability appropriate increase in the amount of stability of the elements Ti, Nb, Mo, weldability compared with 13 chromium stainless steel. Using the same type of chromium stainless steel electrode (G302, G307), should be above 200 ℃ preheat and post weld tempering around 800 ℃. Weldment can not be heat treated, you should make use of chrome-nickel stainless steel electrode (A107, A207).
 4, chrome-nickel stainless steel electrode has good corrosion resistance and oxidation resistance, widely used in chemical, fertilizer, petroleum, medical machinery manufacturing.
 5, chrome-nickel stainless steel welded carbide precipitation by repeated heating and reduce the corrosion resistance and mechanical properties.
 6, drug skin of chrome-nickel Mig Welding Electrode with titanium calcium type and low-hydrogen type. Titanium calcium type can be used for AC-DC, AC welding penetration is shallow, and easy to redness, so as far as possible with DC power supply. Diameter of 4.0 and below can be used for all position welding of 5.0 and above for flat butt and fillet weld.
 7, the electrode should be used to keep dry, lime-titania type shall be dried at 150 ℃ 1 hour, low-hydrogen type shall be 200 ~ 250 ℃ dry 1 hour (can not be repeated drying, otherwise the drug leather easy to crack and peel off) to prevent the electrode drug skin sticky oil and other dirt, so as to avoid causing the weld to increase the carbon content and impact of welding quality.
 8, in order to prevent corrosion between the eyes, the welding current is not too large, about 20 percent less than the carbon steel electrode, the arc should not be too long, rapid cooling between layers, in order to narrow weld heating is appropriate.
 Dissimilar steels should be careful selection of welding rod, to prevent improper electrode selection of hot cracking or high temperature heat treatment caused by the σ phase precipitation, metal embrittlement. With reference to stainless steel and dissimilar steel welding rod selection criteria for selection, and take appropriate welding process.

   1) carbon (C) Carbon is the major alloying elements in steel, when the increase in carbon content of steel {strength, hardness significantly increased, while the plasticity decreases. In the welding process, the carbon play a certain role in deoxy role in the arc under high temperature and oxygen compounds, to generate carbon monoxide and carbon dioxide gas, arc and pool ambient air excluded, to prevent oxygen in the air, nitrogen harmful gas bath adverse impact of reducing the oxygen and nitrogen content in weld metal. If the carbon content is too high, severe reduction will cause a large splash and stomatal Taking into account the impact of carbon steel hardened crack sensitivity increased, the carbon content is generally of low carbon steel welding core cluster by 0.1%.
2) Manganese (Mn) of manganese in steel is a good alloying agent, with the increase of manganese content, the strength and toughness will be increased. In the welding process, manganese is also a good deoxidizer, can reduce the oxygen content in the weld. Manganese and sulfide co-formation of manganese sulfide float in the slag, thereby reducing the weld hot cracking tendency. General carbon structural steel welding core manganese content of 0.30% 0 55% of Cast Iron Welding Rodsome special-purpose steel wire, the manganese content up to 1. 70% of 2.10%.
3) Silicon (Si) silicon is also a good alloying agent in steel and adding an appropriate amount of silicon can increase the yield strength, flexibility and acid resistance; if the content is too high, then reduce the ductility and toughness. In the welding process, the silicon also has a good deoxidation capacity with oxygen to form silicon dioxide, but it will improve the viscosity of the slag, easy to promote non-metallic inclusions generated.
4) Chromium (Cr) Chromium can increase the hardness, wear resistance and corrosion resistance. For low-carbon steel, chromium is an accidental impurity. Metallurgical characteristics of the chromium is subject to rapid oxidation, the formation of refractory oxides of chromium oxide (Cr2O3), thereby increasing the likelihood of weld metal inclusions. Chromium oxide transition to slag make the slag viscosity increased, decreased mobility.
5) Ni (NO nickel on the toughness of steel has more significant effect, the general low-temperature impact value is higher, the appropriate incorporation of some nickel.
6) sulfur (S) Sulfur is a harmful impurities, with the increase of sulfur content will increase the tendency of hot cracking of welds,  Welding Electrodesulfur content not greater than 0.04%. In the welding of important structures, the sulfur content not greater than 0.03%.