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What are the functions of steam generator in metal heat treatment?


In the annealing process of metal heat treatment, the steam generator plays an indispensable and key role. Its role is mainly reflected in multiple dimensions such as temperature control, atmosphere creation, and workpiece cleaning.First, precise control of the annealing temperature is one of the core functions of a steam generator. The annealing process requires the slow and even cooling of metal workpieces from high temperatures, with the ambient temperature reaching above 150°C, to eliminate internal stresses and optimize the metallographic structure. The slightly superheated steam produced by the steam generator has stable temperature characteristics. By adjusting the steam supply, the furnace temperature can be controlled within an appropriate range, avoiding cracking or performance degradation of the workpiece due to excessively rapid cooling. Steam-mediated gradient cooling can significantly improve workpiece toughness, especially for brittle materials such as high-carbon steel.Secondly, steam generators can create a protective atmosphere. For example, when cooling bearing steel, introducing an appropriate amount of steam can reduce scale formation and reduce surface roughness. Furthermore, the steam atmosphere can inhibit decarburization and ensure uniform hardness across the steel.Furthermore, the steam generator assists in cleaning workpieces. High-temperature steam softens oil and oxidation residue on the workpiece surface, which is then discharged with the condensate after cooling, reducing the burden on subsequent cleaning processes. For precision parts, this reduces the impact of contaminants on workpiece accuracy and improves product quality.Judging from these functions, the steam generator not only meets the stringent requirements of the annealing process in terms of temperature, environment, etc., but also plays an important role in improving workpiece quality and simplifying production processes. It is a well-deserved key equipment in the annealing process of metal heat treatment, and provides solid support for ensuring production efficiency and product quality.

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