2026 年 9 月 1 日

Aluminum plant crews who ask why preheat ingot molds before casting are really asking how to avoid one of the most common causes of mold failure: sudden thermal shock. An ingot mold, like the sow mold and sow mould equipment used to produce large-format ingots, is a simple, non-precision vessel that receives molten aluminum straight from the furnace. Pouring hot metal into a cold mold creates a steep temperature gradient that can crack the casting surface almost instantly. This guide explains why preheating matters, how it protects an ingot mold’s service life, and what role material choice and inspection play in the process, so aluminum plants can build preheating into their standard operating routine rather than treating it as an afterthought. How Preheating Protects Ingot Molds and Sow Molds from Thermal Shock? An ingot mold has no built-in cooling system or temperature control; it is simply a container designed to receive molten aluminum and hold its shape until the metal so

A dross pan is one of the simplest yet most essential pieces of equipment in any aluminum plant, and this guide walks through what a dross pan actually does, how it compares to other dross containers, and where it fits into everyday aluminum processing. From holding hot dross straight off the furnace to staging cooled material for further handling, understanding this equipment helps plants choose the right dross pan for their operation. What Is a Dross Pan and What Does It Do? At its core, a dross pan serves one function: holding aluminum dross safely so it can be moved, stored, and eventually processed further. Dross pulled from the furnace at both primary and secondary aluminum plants typically sits somewhere in the 600-to-700-plus degree Celsius range, above aluminum’s 660-degree melting point, while furnace temperatures themselves generally stay under 800 degrees. Rather than performing any active process, a dross pan simply contains the material, hot or already cooled, and