射芯機(jī)的工作原理。

The working principle of the core ejection machine.

工作原理是將以液態(tài)或固態(tài)熱固性樹脂為粘結(jié)劑的芯砂混合料射入加熱后的芯盒內(nèi)，砂芯在熱的芯盒內(nèi)很快硬化到一定厚度（約5~10 mm） 將之取出，得到表面光滑、尺寸精確的優(yōu)質(zhì)砂芯成品。 熱芯盒射芯機(jī)與普通射芯機(jī)比較有以下優(yōu)點(diǎn)： 1 生產(chǎn)效高：熱芯盒射芯機(jī)工作過程是填砂與緊實(shí)同時完成的，并立即在熱的芯盒中硬化，一個循環(huán)周期僅需十幾秒至幾十秒，便可生產(chǎn)出供澆鑄用的砂芯。 2 砂芯質(zhì)量好：能射制任何復(fù)雜程度的砂芯，而且尺寸精確、表面光潔，從而可以減少鑄件加工余量。 3 可以省去很多制芯用輔助設(shè)備及工具、如烘芯爐、烘干器、芯骨、臘線等。 4 減輕勞動強(qiáng)度、操作靈活輕便、容易掌握，采用電加熱，溫度可自。

The working principle is that the core sand mixture with liquid or solid thermosetting resin as binder is injected into the core box after heating. The sand core is quickly hardened to a certain thickness (about 5~10 mm) in the hot core box and will be removed to get a smooth and accurate quality sand core product. The hot core box core ejection machine has the following advantages compared with the ordinary core ejection machine: 1 the production efficiency is high: the working process of the core box ejection machine is completed at the same time with the sand filling and compaction, and immediately hardened in the hot core box. A cycle cycle only takes more than ten seconds to dozens of seconds, and the sand core for casting can be produced. 2 the quality of sand core is good: it can shoot any complex core sand, and the size is accurate and the surface is bright and clean, so that the casting allowance can be reduced. 3, we can save a lot of auxiliary equipment and tools for core making, such as core drying oven, dryer, core bone, wax line and so on. 4 to reduce labor intensity, flexible operation, easy to grasp, the use of electric heating, temperature can be self.