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 Burrs are a common problem in zinc die-casting processing, affecting appearance, fitting accuracy, and subsequent electroplating/surface treatment effects. This article analyzes the causes, detection, and prevention of zinc die-casting burrs to understand the solution process for zinc alloy manufacturing. I. Definition and Causes of Zinc Alloy (ZAMAC) Die Casting Burrs Burrs are small overflows or protrusions on the edges of castings or machined parts, which can lead to assembly interference, surface electroplating defects, poor feel, and safety hazards. In severe cases, rework or scrapping is required, increasing costs and delivery time. The causes of zinc die-casting burrs include the following: Improper mold fit and clearance: Excessive clearance between the mold cavity and core or wear of the locating pins causes molten metal to overflow and form burrs.  1.Injection parameters and molten metal behavior: Excessive casting pressure, insufficient mold temperature, or improp...

Reference:  Suitable for smaller sizes (function priority): 13mm  Standard high-end size (design + brand priority): 15mm The main difference between 13mm and 15mm Zamac zinc alloy perfume bottle caps lies in bottle opening compatibility and product positioning. 13mm caps are typically used for smaller perfumes or portable packaging, offering a more compact structure, lower cost, and suitability for minimalist designs and basic functionalities. 15mm caps, on the other hand, are the current mainstream standard, widely used in 30ml to 100ml perfumes, offering greater compatibility and a wider range of fit. From a design perspective, 15mm caps offer more structural space, making them more suitable for magnetic closures, embossed designs, and complex shapes, effectively enhancing the product's premium feel and brand recognition. 13mm caps, due to their size limitations, are relatively restricted in terms of complex designs and functional expansion. Therefore, in practical selectio...