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  • ◆ Product  Description

     

     

    Sand casting refers to the casting method of producing castings in sand mold. Steel, iron and most nonferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting is simple to manufacture, and can adapt to the single production, batch production and mass production of castings, it has been the basic process in casting production for a long time.

     

     

     

    Advantage

     

    Modeling materials are cheap and easy to obtain,  casting manufacturing is simple, can meet the needs of single production,  batch production and mass production

    Disadvantage

    The dimensional accuracy is relatively low, and the productionefficiency is not as high as other modern  casting methods

  • ◆ Product  Description

     

     

    Gravity die casting, also commonly known as permanent die casting, uses reusable molds made from metals such as steel, graphite, etc., to create metals and metal alloys. This type of metal casting can make various parts, such as gears, gear boxes, pipe fittings, wheels, engine pistons, etc.

     

     

     

     

     

     

     

     

     Advantage

     

     

     

    		   Metal liquid underhigh pressure,fastflowrate, can producegood quality, stable size, good     interchangeability products

    Mold cost is lower,  and the mold life is higher than the die casting,  the cost is lower

    Product has better mechanical properties

    Process is simple,  suitable for large quantities of operations

     

     

     

     

     

     Disadvantage

     

     

     

     

     

    Surface finish of the product is not high,  after shot blasting is easy to produce pits

    Casting density and tensile strength are relatively low

     

    Mold manufacturing costs are higher

  • ◆ Product  Description

     

     

    Depending on the pressure, there are two types of die casting: low pressure casting and high pressure die casting. High pressure die casting is more suitable for mass production of complex geometric shapes requiring high precision. For the production of large and simple parts, low pressure casting is the preferred casting process.In this type of metal casting, non-ferrous metals and alloys such as zinc, tin, copper and aluminum are injected under high pressure into reusable molds coated with lubricants.

     

     

     

     

     

     

      Advantage

     

     

     

    High precision, small dimensional tolerances

    High efficiency, good product quality

    The process can run longer without changing the mold

    Wide range of application: suitable for the production of small, complex parts

     

     

     

     

    Disadvantage

     

     

     

     

    Tool costs are relatively high

    Limited to non-ferrous materials

    It is difficult to ensure the mechanical properties of the product and is not suitable for structural parts

  • ◆ Product  Description

     

     

    Precision casting is a casting process, through the precise control of every link in the casting process to achieve high precision, high quality, high efficiency casting production.

     

     

     

     

     

     

     

    Advantage

     

     

     

    It can produce parts with thin walls, high complexity and high surface quality

    Can be cast stainless steel, thin steel and other refractory alloy.

    Shrinkage allowance in the mold

    Reduce the need for post-casting processing，high dimensional accuracy

     

     

    Disadvantage

     

     

    The production cycle is long

    Limited service life

    Mold manufacturing costs are higher

  • ◆ Product  Description

     

     

    The gypsum casting process is similar to sand casting, except that the mold is made from a mixture called "plaster of Paris." Due to the low thermal conductivity and heat capacity of gypsum, it cools the metal more slowly than sand, which helps to obtain high accuracy, especially for thin-section parts.

     

     

     

     

     

     

    Advantage

     

     

     

    High surface finish

    Capable of casting complex shapes with thin walls

    Higher dimensional accuracy than sand casting

     

     

    Disadvantage

     

     

    Not applicable to high melting point materials

    Longer cooling time, affecting productivity

     

    More expensive than most casting operations

  • ◆ Product  Description

     

     

    Centrifugal casting, also known as rotary casting, is a process that uses centrifugal force to manufacture cylindrical parts in industry. This type of metal casting uses a preheated rotary mold in which molten metal is poured. Centrifugal force helps to distribute molten metal within the mold at high pressure.

     

     

     

     

    Advantage

     

     

    No sprue or riser required

    The process is convenient to manufacture composite metal castings for barrel sleeves

    Increase process yield and reduce waste

     

     

    Disadvantage

     

     

    There are limitations to the production of special-shaped castings

    Centrifugal casting requires a high investment

    The diameter of the inner hole is not accurate, the surface of the inner hole is rough, the quality is poor, and the processing allowance is large

  • ◆ Product  Description

     

    The Lost foam casting is similar to investment casting, except that it uses foam instead of wax to make the model. Once the pattern is formed, refractory ceramics can be coated by dipping, coating, spraying or brushing. The molten metal is then poured into the mold to form the desired product.

     

     

     

     

     

     

    Advantage

     

     

    High precision casting, flexible design

    Cleaner production

    Reduce the weight of casting blank, machining allowance is small.

     

     

    Disadvantage

     

     

    High model cost for small batch production

    Many production processes, long delivery time

    Low strength results in distortion or damage to the pattern

  • ◆ Product  Description

     

     

    Vacuum casting is a type of casting that is produced at a vacuum pressure of 100 bar or less to expel gas from the mold cavity. In this process, molten metal is poured into the mold cavity in the vacuum chamber to eliminate air bubbles and air pockets.

     

     

     

     

     

     

     

    Advantage

     

     

     

    Thin wall products can be produced , and the wall thickness of the die-cast castings is smaller

    Suitable for small batch production

    Welding and heat treatment of the product is possible

    Reduce porosity and improve mechanical properties and surface quality of die casting parts

     

     

    Disadvantage

     

     

    Potential hollow issues

    The die used in the process has a short life

    The sealing structure is more complex, difficult to manufacture and install, and the cost is higher.

  • ◆ Product  Description

     

     

    Extrusion casting is a mixed metal forming process that combines permanent die casting and die forging in one step. In this process, a specific amount of molten metal alloy is injected into the mold and pressure is applied to shape it.

     

     

     

     

     

     

    Advantage

     

     

    Low surface roughness ，high-strength parts

    Can prevent casting cracks

    Eliminate internal defects such as stomata, shrinkage holes and shrinkage holes

     

     

    Disadvantage

     

     

    High processing requirements

    The part geometry is less flexible

    The precise control process is slow and the production efficiency is low

  • ◆ Product  Description

     

     

    It allows continuous mass production of metal profiles with constant cross sections. This type of casting is very popular in the production of steel bars. In addition, vertical casting can produce semi-continuous casting, such as billets, ingots, bars, etc.

     

     

     

     

     

    Advantage

     

     

    Continuous production reduces costs

    Reduce material waste

    Casting products come in a wide range of sizes, from steel a few millimeters thick to larger billets and slabs

     

     

    Disadvantage

     

     

    Continuous cooling of the mold is required, otherwise the center line will shrink

    Covers a large area, the investment cost is high

    Only simple shapes with constant cross sections are cast

  • ◆ Product  Description

     

     

    Shell molding is a expendable mold casting process. It is similar to the sand casting process, except that the hardened sand shell forms a cavity instead of a sand box. The sand used is finer than that used in sand mold casting and is mixed with resin so that it can be heat treated and hardened into the shell around the model.

     

     

     

     

     

    Advantage

     

     

    Casting of thin and complex parts

    No further processing required

    High material utilization,high production flexibility, not limited by alloy material

     

     

    Disadvantage

     

     

    Complicated process

    Size and weight restrictions

    Special metal models are required, which makes the cost of large castings high

Casting

 

Casting refers to the process of obtaining metal-formed objects through various casting methods. Specifically, the molten metal is introduced into a pre-prepared mold by pouring, pressing, suction or other casting techniques. Subsequent processing such as grinding after cooling is conducted to obtain objects with specific shapes, sizes and performance characteristics. The utilization of casting is extensive and has been widely applied in hardware as well as the entire mechanical and electronic industry, indicating a growing trend in its application.

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