★ Which companies can students majoring in mold design and manufacturing go to for employment? ★

Experts recently analyzed in an interview with reporters that the mold industry in China will develop in the direction of large-scale, precision, complexity, high efficiency, long life and multi-function.

At present, 60%-80% of parts and components in electronics, automobiles, motors, electrical appliances, instruments, meters, household appliances, communications, military industry and other industries are molded by molds. The parts formed by die show high precision, high complexity, high consistency, high productivity and low consumption, which are incomparable to other processing and manufacturing methods. Mold largely determines the quality, benefit and development ability of products.

Experts believe that the mold industry in China is getting bigger and bigger, and the precision will be higher and higher. 10 years ago, the precision of precision molds was generally 5μm, but now it has reached 2-3 μ m. Soon, molds with the precision of 1μm will be on the market. With the miniaturization of parts and the improvement of accuracy requirements, the machining accuracy tolerance of some molds is required to be below 65438 0 μ m, which requires the development of ultra-precision machining.

Experts believe that the mold industry in China should further develop multifunctional compound molds. A set of multifunctional dies can not only press and shape parts, but also undertake assembly tasks such as lamination, tapping, riveting and locking. This kind of multi-functional die no longer produces batch parts, but batch components, such as various micro-motors, electrical appliances, contacts and supporting components of instruments, iron core components and so on. Multicolor and multi-material plastic molding dies will also develop rapidly. This kind of mould shortens the production cycle of products and will be developed and applied in different fields in the future.

With the popularization and application of hot runner technology, the proportion of hot runner mold in plastic mold will gradually increase. The mold with hot runner technology can improve the productivity and quality of parts and greatly save raw materials of parts. The application of this technology has developed rapidly abroad and has become very common. Hot runner molds are also produced in China, with some enterprises reaching about 30%, but overall, the proportion is too low and needs to be developed urgently. With the continuous improvement and development of plastic molding technology, gas-assisted molds and molds adapted to high-pressure injection molding technology will also develop.

Experts believe that the application of mould standard parts will be more and more extensive, and the standardization of mould and the application of mould standard parts can greatly affect the mould manufacturing cycle. Using die standard parts can not only shorten the die manufacturing cycle, but also improve the die quality and reduce the die manufacturing cost. At the same time, the prospect of fast and economical molds is very broad. Because people require the production cycle of molds to be as short as possible, people pay more and more attention to developing fast and economical molds. For example, develop various superplastic materials to make molds; Make a simple mold with epoxy resin, polyester or metal, glass and other reinforcing materials. The mould has the advantages of simple manufacturing process, easy control of precision, small shrinkage, low price and long service life. Cement plastics can also be used to make automobile panel molds. Rapid and economical molds such as medium and low melting point alloy molds, injection molding molds, electroforming molds, precision molds, laminating molds, ceramic plastic suction molds, photographic molds, and rapid manufacturing of low-cost molds using thermosetting rubber will be further developed. Quick-change die set and quick-change punch will also be improved day by day. In addition, the technology of rapid die changing device and rapid die testing device controlled by computer and operated by manipulator will also be developed and improved.