the merit of the Gas-assisted injection molding—low injection pressure and locking force, thereby reducing cost for equipment, since gas-assisted injection adopts “ underfeeding injection”, […]
Discharge of gas. When the product is cooled until it takes on certain level of rigidity and intensity,, pressure of the gas shall be discharged and recycled, finally open the cavity and eject the product.
Gas dwell, upon the completion of filling in the mold cavity and on the premises that the gas pressure is preserved, the product should be put aside until it gradually cools to compensate shrinkage of the product due to the cooling of materials. […]
I want to say something about Gas injection stage, this stage plays a very significant role in the whole production process in which it directly influences the final quality of a product. […]
Gas injection, inject high-pressure inert gas such as nitrogen into the core of fusant and the gas enveloped by plastic fusant shall move forward along a direction with minimum resistance and meanwhile push the flowing front of fusant to move further forward unitl the mold cavity is fully filled. […]
Another reason micro hard milling is growing in popularity these days is that micro cutters are being offered in more expansive ranges of cutter reach lengths, provide longer cutting lives and generate near perfect surface finishes. And cutters are manufactured to exacting tolerances. For example, some cutting tool manufacturers hold diameter tolerances on their micro [...]
Many of today’s shops involved with micro machining are doing so on extremely hard metals, such as CPM (1-V, 3-V, 9-V) D2, A2 and F7 tool steels, along with hard powdered metals, all of which can be as hard, or harder than, 62-64 Rc. They also micro machine stainless steels like 450, 410, and 17-4 [...]
The tab gate —the most commonly used of the three—consists of a trapezoidal block milled into the parting line on an exterior surface of the part and is usually placed in a thicker wall section rather than thinner areas. Its position usually makes it easy to trim off, and while it typically leaves the largest [...]
Drilling in mold manufacturing often differs from conventional drilling with respect to several key factors. For one thing, there is a greater frequency of contoured drilling surfaces. For another, the industry employs tougher materials than are typically encountered in general machining. Successfully dealing with these conditions requires an application-specific machining strategy. […]
China industry spends hundreds of billions a year in costs related to, or caused from, corrosion. In the plastic’s industry, these costs are not limited to mold damage and repair. Corrosion also causes the breakdown/shutdown of a press, leading to manufacturing downtime and significant loss of productivity. […]