Selection and design of die casting die for USB shell
The design of die-casting die for USB shell is mainly based on the shape and production requirements of parts. For example, a USB shell is made of zinc alloy No. 3. The precision of die-casting is required to be 0.01mm local distribution tolerance, die-casting at the insertion part, with smooth edges and no hairs, wrinkles and scratches on the face.
USB shell belongs to mass-produced parts, which are box-shaped cubes in shape. It brings great inconvenience to die-casting forming, and its shape is also miscellaneous. In order to ensure the quality of USB shell, reasonable sequence of process must be arranged in the forming process.
(1) Strictly enforce the operation rules of die casting workers and strictly control the cycle time of the first mold, the error should be less than 10%. Stable die casting cycle time is very important for the comprehensive benefit of a foundry. It has a decisive impact on product quality stability, mold life, failure rate and so on.
_Strictly implement the mold cooling scheme, mold cooling is an effective method to improve production efficiency, casting quality, mold life, reduce mold failure. However, the wrong water cooling operation will cause fatal damage to the mold. To stop die casting production, the cooling water must be shut down immediately.
(3) Standard operation of pouring pool, bailing aluminium and pouring pole, so that the molten metal does not contain oxide scale and the molten metal poured into the pressure chamber fluctuates least. The pouring error of manual pouring is controlled within 2 - 3%.
(5) Cleaning the mold in a timely manner to remove the metal shadows deposited on the parting surface, cavity, core, runner, overflow groove, exhaust duct, etc. to prevent the surface of the mold from collapse, blocking the exhaust duct, or causing lax mold closure. It is forbidden to use steel tools to contact the forming surface when cleaning.
(6)Spraying is one of the most important and difficult die casting operations, and must be strictly operated according to the spraying process. Incorrect spraying will cause unstable product quality and early damage limit.
In accordance with the regulations, the sliding parts should be lubricated in time.
(7)always pay attention to the clamping tightness, often check the mold pressure plate and mold bracket support, to prevent the use of mold sinking or falling.
(8) complete a mold maintenance cycle of the mold, or stop production after the completion of the specified batch, to retain the last die casting products (preferably with pouring, row system).
Secondly, choose a good reputation, high technology, experienced professional die-casting mold factory to manufacture USB shell die-casting mold. Die-casting mold is a special kind of precision machinery, those professional die-casting mold factory, they have suitable for the production of die-casting mold precision machine tools, can ensure mold size accuracy; they have experienced senior mold technicians, technicians rich experience is the guarantee of practical and easy-to-use die-casting mold; they are closely related to material suppliers and heat treatment plants. Cut the relationship, they have a perfect after-sales service system...... Good mold design and manufacturing is the foundation of die casting die with long service life, low failure and high efficiency. Low-priced low-quality die-casting molds will show low production efficiency, high failure in die-casting production, let you waste a lot of expensive die-casting time, spend more money.
