特黄特色的大片观看免费视频

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                What materials are suitable for gravity casting and necessary to do heat treatment?
                How to avoid porosity of gravity casting and how to improve mechanical properties?
                In gravity casting, the aluminum alloy gravity casting is believed to be familiar to everyone, because you can learn and master related knowledge through related articles on the website to familiariz…
                Aluminum alloy casting is to fill the mold with molten metal to obtain various shapes of aluminum alloy parts. Aluminum alloy casting has the advantages of low density, high specific strength, good c…
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                Sand and hardening methods in sand casting process.In the specific type of casting, sand casting will be involved below. Now let's learn together.
                The operation of gravity casting is mainly a traditional casting process with sand as the main molding material. Most of its lifting sand molds are made by gravity casting. If there are special requi…
                Sand casting mainly refers to the production casting method in the process of operation. Its steel, iron and most nonferrous alloy castings can be obtained by sand casting method. Because the molding…
                Gravity casting refers to the process of pouring molten metal into a mold under the action of the gravity of the earth, also known as gravity casting. In the broad sense, gravity casting includes san…
                Why sand cast aluminum turn black or white spots?Aluminum alloys are widely used in the foundry industry. Aluminum alloys have good fluidity and plasticity, but they tend to become black or white spo…
                Features of vacuum casting process,Advantages of vacuum casting process,Vacuum casting process technology
                Low-pressure casting refers to a method in which liquid metal is filled into a mold under a relatively low pressure (0.02 to 0.06 MPa) and crystallized under pressure to form a casting.Centrifugal ca…
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                Metal casting methods are customarily divided into:Sand casting, die casting, permanent mold casting or gravity casting or Low pressure casting, investment casting or lost wax casting, Centrifugal ca…
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                The ability of molding sand to resist external force damage is called strength. The molding sand must have high enough strength to not cause collapse during molding, handling, and box closing, and it…
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                ?In the process of automobile manufacturing, there are many parts made of cast iron, accounting for about 60% of the whole vehicle weight, such as cylinder block, transmission case, steering gear c…
                In our daily life, a lot of parts and articles are directly obtained by casting. In the process of production, gravity casting will effectively have different casting processes according to its diffe…
                Foundry sand casting has been used in many aspects. For example, we are now popular accessories.
                Sand casting is mainly used to model and core various raw materials when it is used, such as its foundry raw sand, molding sand binder and other auxiliary materials, as well as molding sand, core san…
                Casting can also be divided into gravity casting and pressure casting according to the pouring process of molten metal. Gravity casting refers to the process of injecting molten metal into the mold u…
                The die casting process uses a high-speed injection of molten aluminum into the die-casting mold and pressure-holding and cooling forming. The gravity casting process uses a method of slowly pouring…
                Gravity casting refers to the process of injecting molten metal into the mold under the action of the gravity of the earth, also known as casting. In the broad sense, gravity casting includes sand ca…
                Aluminum gravity casting and aluminum low pressure casting are both metal mold casting processes or called permanent mold casting prosess. Both are used to produce aluminum castings. The molds are me…
                High pressure casting is what we usually call die casting. The aluminum liquid is poured into the pressure chamber, and the mold cavity is filled with the pressure at high speed, and the aluminum liq…
                Cast aluminum has the advantages that other castings can not match in the process of use. The quality of the product is very light and beautiful. Cast aluminum has very good corrosion resistance, so …
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