How to improve the surface polishing quality of die casting, die casting products wall can't be too thin. Large area of thin wall prone to owe defects such as water, cold. Die-casting products wall thickness choice: under normal circumstances, the wall thickness should not be greater than 4.5 mm, small and medium sized castings is suitable for wall thickness of the zinc alloy 1-3 mm, 1.5 4 mm socket screw plug magnesium alloy, copper alloy 2 to 4 mm. Die-casting products wall thickness should be uniform, which is beneficial to the molten alloy solidification, after the "filling" can avoid the casting stress and defects such as shrinkage cavity and crack. Can be in the fireplace thick wall part of the die casting products used in the strengthening rib or insert, in order to improve their mechanical performance and manufacturability. Not by increasing the wall thickness to improve the bearing capacity of the die casting products.
What are the common die casting parts: used to connect profile accessories profiles and profiles of the connection between the often only need bolts and nuts. After drilling, tapping and cutting profiles can be connected to the corresponding bolts and nuts. In Stainless steel foundry order to strengthen the connection, you can use the Angle, Angle of the support and other accessories. Bar connector level, 90 degree holder or built-in connector vertical connections. Connection profiles and sheet fittings used to connect profiles and plank of accessories with embedded stripes and quick connection between. These two types are usually use on the fence. The practical, powerful. System accessory for decorative accessories are usually some seals, end cover and Angle, etc.
Die casting is widely used in equipment parts, power parts, oil machinery parts, train parts, auto parts, volute, body, bracket, kitchen supplies, bicycle parts, textile machinery parts, etc., are widely used. This is non standard fasteners because the die casting has many other metal die casting incomparable advantages, such as light weight, corrosion resistance, good appearance, etc. Die casting has been favored by users from all walks of life, since the automotive lightweighting, die casting has been widely used in the automotive industry.
Die casting is divided into calibration, repair and surface finishing three aspects. Some die casting during solidification and cooling and heat treatment can appear different degree of deformation, make some difference in size, need Steel investment casting to take corrective measures to repair it. Correction mainly at room temperature or under the action of mechanical force. When the deformation is too large, also can use die casting weight or weight under external pressure correction in high temperature within the furnace.
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Postado 2022-07-18 07:35:12
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