Small and medium-sized casting manufacturers will explain the steps involved in casting to everyone.

　　Small and medium-sized casting manufacturers will explain the steps involved in casting for everyone.

　　Small and Medium-Sized Casting Manufacturers: The Steps of Casting

　　The holding time for heat treatment of castings is determined by factors such as the casting’s wall thickness. Here are the operational steps: 1. Check whether the equipment is functioning properly. 2. Adjust the instruments to the required temperature, then start heating and supplying power. 3. Place the castings to be treated into the processing basket, ensuring that their height remains 80–100 mm below the top of the furnace chamber. 4. Carefully and swiftly position the basket containing the castings inside the heat treatment furnace. 5. Close the furnace door tightly, gradually increase the temperature to the specified level, and maintain it at that temperature for the recommended duration. 6. Once the holding period is complete, cut off the power supply and allow the castings to cool according to the process requirements. 7. Use seven samples to measure the hardness; only if they meet the standards can the castings proceed to the next step. 8. If the hardness of a casting fails to meet the specifications after heat treatment, reprocessing is permitted—but no more than three times in total. We hope this information is helpful to you!

　　The casting production process is a complex and integrated combination of procedures, encompassing numerous production steps and stages—from the preparation of both metallic and non-metallic materials to alloy melting, mold making, core production, die casting, cleaning, defect removal, and finally, heat treatment to yield qualified castings. The casting production process includes the following key procedures:

　　1. The production process of molding sand and core sand directly affects the quality of the sand. Typically, manufacturing molding sand involves two main stages: preparation and testing of raw materials, as well as the actual production and quality control of the sand.

　　2. The method and process of creating sand molds using molding sand, patterns, and other techniques is called "molding." There are many different methods of molding, depending on the shape, size, and technical requirements of the casting.

　　3. Dissolving involves heating to transform metal from solid into liquid, followed by metallurgical reactions that remove impurities from the molten metal. This process—where temperature and composition are precisely controlled to meet specified requirements—is known as dissolution. There are various types of equipment used for melting metals; for instance, when producing cast iron platforms or machine tool castings, we typically opt for a cupola furnace.

　　4. For large or high-quality castings, dry-type pouring is typically used after sand mold drying—examples include large cast iron platforms, machine tool bed castings, machine tool worktables, and other precision machine tool components.

　　5. The operation of pouring molten metal from the ladle into the mold is called casting.

　　6. The process of removing surface sand, mold sand, excess metal, and other residues from castings after shakeout is called cleaning.

　　7. Castings heat treatment involves heating the castings to a specific temperature range, holding them at that temperature for a set period, and then cooling them at a controlled rate to an appropriate temperature, thereby achieving the desired microstructure and mechanical properties. The purpose of heat treating castings is to relieve casting stresses—this process is especially crucial for components like cast iron plates, machine tool castings, and machine tool worktables, which must undergo heat treatment before further machining can take place.

　　The above article is brought to you by the small and medium-sized casting manufacturers—we hope it proves helpful. And if there’s anything you’re unclear about, feel free to reach out to us, your trusted small and medium-sized casting supplier!