GB/T15620 ERNiCrMo-13 Weldme 59 Welding Wire For chemical process plant

Production Description

Ernicrmo-13 is a nickel-based welding wire commonly used for welding high-temperature alloys. It is composed of elements such as nickel, chromium, and molybdenum, and has excellent heat and corrosion resistance.

The DC welding current of Ernicrmo-13 welding wire is generally between 100-150A. The selection of welding current should be determined according to the thickness and size of the welded part. Generally speaking, too large welding current is likely to cause burn-through of the weld, while too small current will lead to a decrease in weld quality. The selection of welding voltage should be determined according to the welding current and the material of the welded part, generally between 25-30V.

After Ernicrmo-13 welding is completed, the weld should be properly post-processed. First, the weld surface should be ground and polished to remove welding slag and oxides. Secondly, the weld should be subjected to ultrasonic flaw detection and radiographic testing to check the welding quality. Finally, the welded parts should be heat treated and annealed to eliminate stress and deformation in the welding area.

ERNiCrMo-13 Composition :

ErNiCrMo-13 consists primarily of nickel (Ni), chromium (Cr), molybdenum (Mo), and small amounts of iron (Fe). The typical composition is approximately 55% nickel, 16% chromium, 16% molybdenum, 5% iron, and other trace elements. This composition provides ErNiCrMo-13 with its exceptional corrosion resistance and mechanical properties.

ERNiCrMo-13 Characteristics:

Corrosion Resistance

ErNiCrMo-13 exhibits outstanding resistance to corrosion in a variety of aggressive environments, including:

1. Strong Oxidizing Agents: It resists corrosion from oxidizing agents such as nitric acid, chlorine, hypochlorite, and chlorine dioxide.

2. Acids: ErNiCrMo-13 provides excellent resistance to corrosion in both reducing and oxidizing acids, including sulfuric acid, hydrochloric acid, phosphoric acid, and acetic acid.

3. Chlorides: It has excellent resistance to chloride-induced pitting and crevice corrosion, making it suitable for applications in marine environments and chloride-containing solutions.

4. Seawater: ErNiCrMo-13 is highly resistant to corrosion in seawater, making it suitable for marine and offshore applications.

High-Temperature Performance:

ErNiCrMo-13 retains its mechanical strength and corrosion resistance at elevated temperatures, making it suitable for high-temperature applications. It can withstand temperatures up to approximately 1,000°C (1,800°F) without significant loss of mechanical properties.

Applications:

ErNiCrMo-13 is widely used in various industries where corrosion resistance is essential. Some common applications include:

1. Chemical Processing: It is used in chemical processing equipment such as reactors, vessels, and piping systems that handle corrosive chemicals and acids.

2. Petrochemical Industry: ErNiCrMo-13 is employed in oil refineries, gas processing plants, and petrochemical facilities for equipment exposed to corrosive environments.

3. Pharmaceutical Industry: It is utilized in pharmaceutical manufacturing processes that involve corrosive chemicals and acids.

4. Pollution Control: ErNiCrMo-13 is used in flue gas desulfurization systems, waste treatment plants, and other pollution control applications where resistance to corrosive gases and acids is required.

5. Marine and Offshore: It finds applications in marine components, offshore platforms, and seawater handling systems due to its excellent resistance to corrosion in marine environments.

Advantages:

ErNiCrMo-13 offers several advantages, including:

1. Excellent Corrosion Resistance: It provides exceptional resistance to a wide range of corrosive environments, including strong oxidizing agents, acids, and chlorides.

2. High-Temperature Performance: ErNiCrMo-13 retains its strength and corrosion resistance at elevated temperatures, making it suitable for high-temperature applications.

3. Versatility: The alloy’s broad corrosion resistance allows for its use in various industries, including chemical processing, petrochemicals, pharmaceuticals, and marine applications.

4. Weldability: ErNiCrMo-13 can be readily welded using various processes, allowing for easy fabrication and repair.

In summary, ErNiCrMo-13 (Hastelloy C-276) is a nickel-based alloy known for its exceptional corrosion resistance in aggressive environments. Its resistance to strong oxidizing agents, acids, and chlorides, along with its high-temperature performance, make it a versatile choice for applications in chemical processing, petrochemicals, pharmaceuticals, and marine environments.

Preparation process

The preparation process of ERNiCrMo-13 welding wire usually includes the following steps:

Raw material preparation: Select high-quality metal raw materials to ensure that their chemical composition and physical properties meet the requirements.

Alloy smelting: Put the raw materials into the arc melting furnace for smelting, control the smelting temperature and atmosphere, and ensure that the alloy composition is uniform.

Wire drawing: The smelted alloy liquid is drawn into welding wire of the required diameter through a wire drawing machine.

Surface treatment: Clean and treat the surface of the welding wire to remove oxides and impurities and improve welding quality.

Optimization of the preparation process can improve the quality and performance of the welding wire, reduce production costs, and improve production efficiency.