Carbon steel elbow is a good elbow, widely used and promoted in different fields and industries, to varying degrees of usage and penetration. Carbon steel elbow pipe is the use of the same material as sheet metal stamping die stamping ring halves elbow, then two half-ring elbow were group forming welding, carbon steel elbow welded need to follow certain steps be produced and processing.

Carbon steel elbow has excellent corrosion resistance and oxidation resistance, good features to facilitate their use and promotion in different fields, widely used in chemical, fertilizer, petroleum, medical machinery.

When carbon steel elbow welded through heating will open release carbide, subjected to repeated heating carbide precipitation, it will affect the release of carbide steel elbow function, reduce corrosion resistance and mechanical properties. These are matters about the use of carbon steel elbow requires attention need to follow certain methods and use matters to ensure its good value and function.

To improve the corrosion resistance of carbon steel elbow function and weldability, and appropriately increase the right amount of chaos element ti, nb, mo, etc. at the time of production, the more chromium steel welding elbow better. When using the same type of chromium stainless steel elbow, should be tempered after more than 200 ℃ preheating and welding of around 800 ℃. If you can not heat treated weldments, it should be used chrome-nickel stainless steel elbow.

Carbon steel elbow should be used to keep dry, titanium calcium type should be dried 150 ℃ 1 hour low hydrogen type shall be dried 200-250 ℃ 1 hours (can not be repeated drying, cracking or the coating peeled off easily), to prevent stainless steel elbow stick coating oil and other dirt, so as not to cause an increase weld stainless steel elbow carbon content and impact of the quality of the weldment.

Step / methods carbon steel elbow after welding sclerosing large, easy to crack, use a different welding electrodes in welding, to ensure the quality of the welding of carbon steel elbow. If after using the same type of chromium steel welding rod bends, must be above 300 ℃ preheating and welding slow cooling process of about 700 ℃. If the weldment after weld heat treatment is not carried out, it should be used chrome-nickel steel elbow. Different types of electrodes with different functions and features in use in use in accordance with the corresponding need to use, protect the quality of welded carbon steel elbow.

Carbon steel elbow with a certain degree of corrosion (oxidizing acids, organic acids, cavitation), heat and wear performance. Typically used in power plants, chemical, oil and other equipment and materials. Chromium stainless steel welding elbow poor, should pay attention to the welding process, heat treatment provided and the appropriate choice of welding. Fifth, carbon steel elbow with titanium calcium type coating and low hydrogen type. Titanium calcium type can be used for AC and DC, but AC weld penetration depth is shallow, at the same time easy to redness, so stainless steel elbow as much as possible with DC power supply.