Metal Casting is a process of smelting metal material into a liquid that meets certain requirements and pouring it into a mould. After cooling and solidifying and finishing, a casting with a predetermined shape, size and performance is obtained. Because the casting blank is almost formed, the purpose of avoiding machining or small amount of machining reduces the cost and time to a certain extent. Casting is one of the basic processes of modern machinery manufacturing industry. One common used process is Sand casting. Sand Casting The basic raw materials for making sand moulds are foundry sand and sand binder. The most commonly used foundry sand is siliceous sand. When the high temperature performance of silica sand cannot meet the requirements for use, special sands such as zircon sand, chromite sand, and corundum sand are used. The most widely used sand binder is clay, and various dry or semi-dry oils, water-soluble silicates or phosphates, and various synthetic resins can be used as the sand binder. The outer sand mold used in sand casting is divided into three types: clay wet sand mold, clay dry sand mold, and chemically hardened sand mold according to the binder used in the molding sand and the way to build strength. Advantage Clay is rich in resources and cheap. Most of the used clay wet sand can be recovered and reused after proper treatment; the cycle for making molds is short and the work efficiency is high; the mixed sand can be used for a long time; Small pieces, large pieces, simple pieces, complex pieces, single pieces, large quantities can be used;

Metal Casting is a process of smelting metal material into a liquid that meets certain requirements and pouring it into a mould. After cooling and solidifying and finishing, a casting with a predetermined shape, size and performance is obtained. Because the casting blank is almost formed, the purpose of avoiding machining or small amount of machining reduces the cost and time to a certain extent. Casting is one of the basic processes of modern machinery manufacturing industry. One common used process is Investment casting. Investment casting usually refers to making patterns in fusible materials, covering the surface of the pattern with several layers of refractory materials, and then melting the pattern out of the mold shell to obtain a mold without a parting surface. After high temperature baking can be sand-filled casting scheme. The types of alloys that can be produced by investment casting are carbon steel, alloy steel, heat-resistant alloy, stainless steel, precision alloy, permanent magnet alloy, bearing alloy, copper alloy, aluminum alloy, titanium alloy, and nodular cast iron. Advantage: High dimensions accuracy. Generally can reach CT4-6, it can improve the utilization rate of metal materials. Investment casting can significantly reduce the amount of processing of the product's forming surface and mating surface, save the consumption of cutting table materials and cutting tool materials; can maximize the similarity between the blank and the part, and bring great benefits to the structural design of the part. Convenience. Casting castings with complex shapes Investment casting can cast castings with very complicated shapes, castings with wall thickness of 0.5mm and weight as small as 1g, and can also cast combined and integral castings; it is not restricted by alloy materials. Investment casting can cast carbon steel, alloy steel, ductile cast iron, copper alloy and aluminum alloy castings, as well as castings of high-temperature alloys, magnesium alloys, titanium alloys and precious metals. For alloy materials that are difficult to forge, weld, and cut, it is particularly suitable for casting by precision casting; high production flexibility and adaptability. Investment casting is suitable for both mass production, small batch production and even single piece production.

Metal spinning, also known as spin forming or spinning, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. Historically significant, the process has evolved significantly with advancements in technology, leading to the development of new techniques and applications in various industries. This article provides a comprehensive exploration of metal spinning, covering its history, principles, techniques, materials, equipment, applications, and recent technological advancements. There are several variations of metal spinning, each suited to different applications and material types: Conventional Spinning: This involves simple shapes and is the most basic form of metal spinning, often used for producing cylindrical or conical parts. Shear Spinning: Also known as flow turning, this technique involves thinning the material as it is spun, allowing for the production of stronger, lightweight components. Tube Spinning: This method is used for shaping tubes and involves the axial stretching and thinning of the material. Hot Spinning: In this process, the metal is heated to make it more malleable, allowing for the forming of harder metals or more complex shapes.