Four methods for removal of zinc alloy pressure castings

　　1. Artificial burden

　　This is also commonly used by general enterprises. The knife has an artificial knife and analogy. The labor cost is more expensive, the efficiency is not very high, and it is difficult to remove the complex cross holes. The technical requirements for workers are not very high, with small burrs and simple product structure.

　　2. Divide the mold to go to the burrs

　　The use of making a punch with a punch to remove the burr. It requires a certain amount of punch (coarse mold+fine -punching) production costs. Plastic molds may also be required. Suitable for products with relatively simple differential faces, efficiency and

　　3. Grind and remove the burrs

　　This type of burr contains vibration, sandblasting, and drums. At present, there are more enterprises. There are problems that are not very clean. It may be necessary to manually handle the residual burrs or use other methods to remove the burrs. Suitable for small products with large batches.

　　Frozen

　　Use the cooling to quickly brittle the burrs, and then spray the bullets to remove the burrs. The price of the equipment is about 2.3 million, which is suitable for products with smaller burrs and smaller products.

　　Talking about the messenger of aluminum alloy casting casting

　　1. Preparation of melting tools

　　Doing a good job before refining is an important part of ensuring the quality of aluminum fluid.

　　2. Aluminum ratio ratio

　　The aluminum ingot and the back furnace should be used, and the proportion of returning materials is not more than 50 %.

　　3. Installation

　　The surface of the aluminum ingot and the return of the furnace should be cleaned and dry. First fill the bottom with small materials, and then add aluminum ingots to prevent the bottom of the bad stove.

　　4. Refine, remove qi, remove residue

　　Refining: The furnace melts starts with the covering agent on the liquid surface to cover all metal liquid surfaces to prevent its oxidation and inhalation.

　　Qi: After the refining is completed, use hydrogen to remove the aluminum fluid with a steam machine.

　　Defolding: After refining, removing qi, take the residue removal to sprinkle it on the surface of the aluminum, and gently mix with a porous grip until the aluminum residue gradually becomes dry and white. The mouth enters the slag car.

　　5. Inspection in front of the furnace

　　After the refined residue is completed, the pre -furnace inspection can be performed. The quality of aluminum liquid can be evaluated through the hydrogen measurement, direct reading spectrometer, and crystal analyzer.

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