The Manufacturing Process Of Alloy 600 Is Fully Revealed

INCONEL 600 steel, as a nickel-chromium-based alloy, can perform excellently in extreme environments and can withstand various high temperatures, high pressures, loads, chemical media, etc., and is therefore widely used in many high-demand fields. The excellent performance of alloy 600 depends not only on the alloy it has, but also on its manufacturing process, which has an important impact on its performance and quality. At Songshun, we are committed to providing alloy 600 steel with the highest quality and performance, and strictly require every aspect of its manufacturing. This article will introduce in detail the manufacturing process of alloy 600 provided by Songshun, from raw material selection, smelting, casting and heat treatment, etc.

Selection Of Raw Materials
The quality and purity of the raw materials of alloy 600 are crucial to the performance of the final steel and directly affect the effect of the forging process. Therefore, we will select high-purity nickel, iron, chromium and other elements for strict and precise proportions. Usually, the nickel content should be between 72% and 78%, and the chromium content should be between 14% and 17%. During this process, material analysis and chemical composition testing are essential to ensure that the raw materials meet international production standards and customer requirements.

Melting
This process is to put the precisely proportioned alloy 600 steel raw materials into a high-temperature vacuum arc furnace or induction furnace to melt into a uniform liquid metal alloy. During the melting process, it is necessary to ensure that the raw materials are fully melted and evenly mixed, and the temperature and atmosphere need to be strictly controlled to avoid the introduction of impurities, contamination of impurities, and oxidation and deviation of alloy components.

In order to remove gases and impurities in the alloy, Songshun usually performs secondary melting or electroslag remelting in a vacuum environment. This process can further improve the purity and performance of the alloy. Inconel alloy 600 will also be pre-treated, including cleaning, annealing, stretching, etc., in order to improve the efficiency and quality of subsequent casting and forging.

Casting
After smelting, the molten metal of alloy 600 is poured into the designed mold for casting to obtain a casting (ingot) of preliminary shape. After the casting is cooled, it is taken out of the mold for preliminary cleaning and inspection. It should be noted that the casting process of inconel 600 steel requires control of temperature, pouring speed and cooling speed to ensure the quality of the ingot and avoid internal stress and defects such as pores or inclusions. Usually, our casting method for this steel usually adopts precision casting, vacuum casting or continuous casting. Different casting techniques can be selected according to the needs of the final product.

Forging, Hot Rolling Or Cold Rolling
At Songshun, we usually use the process of casting first and then forging (hot rolling, cold rolling, cold drawing, cold drawing, etc.) for INCONEL 600 steel. After casting, the initial ingot is processed by forging, hot rolling or cold rolling. Depending on the customer’s requirements, the process flow after casting will also be different, but these processes can achieve the required size and shape. And these process steps can improve the grain structure of the material, reduce internal stress, improve its density, mechanical properties and ductility, while improving its corrosion resistance and obtaining the required size and shape. It should be noted that different methods need to be selected according to the requirements of the product shape and size, and parameters such as temperature, pressure and speed must be strictly controlled to ensure the quality of the steel.

Heat Treatment
Alloy 600 is usually heat treated by solution treatment, aging treatment, annealing and other methods to adjust its structure and properties to meet the needs of different engineering applications. It should be noted that different customer needs require different methods.

Inconel 600 material solution treatment: mainly to ensure that the solid solution elements in the alloy are uniformly dissolved in the solid solution, which can significantly improve the corrosion resistance, strength, plasticity and toughness of the steel, reduce the hardness, and provide better conditions for subsequent processing and forming Provide convenience.

Inconel 600 material steel aging treatment: This process mainly precipitates stable precipitates, improves its grain structure, and improves the strength, hardness and other properties of the alloy.

Alloy 600 annealing: During the annealing process, the steel is heated to a certain temperature and maintained for a certain period of time to eliminate internal stress and refine the grains, and improve the material’s oxidation resistance, toughness and plasticity properties to restore its plasticity and improve Adverse effects of work hardening.

Machining And Surface Treatment
At Songshun, we provide a variety of alloy 600 machining and surface treatment to ensure that the final size and surface quality are achieved to meet your different needs. Including cutting, turning, polishing, milling, pickling, grinding and drilling.

Inspection And Packaging
Alloy 600, whether it is a finished product or in each link of manufacturing, must be strictly inspected for quality to ensure that the final product meets the requirements. Songshun provides a variety of tests, including chemical composition analysis, hardness testing, dimensional accuracy testing, ultrasonic flaw detection and mechanical properties testing, etc.

After the alloy 600 material is inspected and qualified, the product will be marked to indicate the alloy grade, batch number and specification, and properly packaged. The packaging method of this steel is usually based on transportation requirements and customer needs for transportation and storage, and timely delivery to customers.

The above is the main manufacturing process of about 30 tons of alloy 600 supplied by Songshun for several recent projects from Russia, Brazil and Germany. It covers multiple links from smelting to final product inspection. It is a multi-step, complex and highly technical process. We require precise control and meticulous operation at every step, and provide various processing of alloy 600 steel to give full play to its potential to ensure that high-temperature alloy steel can meet the requirements of various harsh application environments and customer needs, and provide you with the best high-temperature alloy steel.

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