Technology / product information

"Discoloration" refers to changes in the surface color of a metal due to manufacturing processes or environmental factors. In aluminum die casting, discoloration can occur after casting, significantly impacting product quality and customer perception. This issue is particularly critical for products that require high aesthetic and surface finish standards.

[Main Causes of Discoloration]
Oxidation During Casting
Aluminum is highly prone to oxidation. If the product surface comes into contact with oxygen during casting and cooling, an oxide layer forms, leading to color changes.
Improper Use of Release Agents
Release agents are essential for ensuring proper separation between the mold and the product. However, if the release agent contains incompatible chemical components, it can trigger undesirable reactions, causing discoloration.
Cooling Process Issues
Rapid or uneven cooling can alter the surface crystal structure, leading to color inconsistencies.

[Yamaguchi’s Discoloration Control Solutions]
Although discoloration is a major challenge in aluminum die casting, it can be effectively controlled through proper techniques and management. With years of expertise, Yamaguchi has developed a specialized manufacturing process that significantly minimizes discoloration, ensuring high-quality surface finishes that meet customer expectations.

[Key Features of Our Aluminum Die Casting Technology]
Discoloration Prevention Technology
We carefully select and apply optimal release agents, significantly reducing discoloration during the casting process and achieving a high-quality finish.
Versatile Manufacturing Capability
Equipped with 420T to 800T die casting machines, we can accommodate a wide range of product sizes.
Integrated Production System
Our in-house manufacturing process, from casting to precision machining and final finishing, ensures both high quality and short lead times.

[Equipment]
BD-V7EX800T Aluminum Die Casting Machine
SD-420CH Aluminum Die Casting Machine
Shot Blasting Machine

[Quality Assurance & Production System]
Strict Quality Control
We conduct thorough inspections at every stage, from casting to finishing, ensuring consistent appearance and precision.
Advanced Equipment & Expertise
Using cutting-edge die casting machines and shot blasting technology, we achieve high uniformity, even for complex-shaped products.
Flexible & Fast Delivery
By optimizing our production schedule, we offer rapid and adaptable delivery timelines to meet customer demands.

[High-Quality, Aesthetically Superior Die Cast Products]
Discoloration in aluminum die casting is caused by oxidation, cooling irregularities, and improper release agent use, affecting both appearance and quality. At Yamaguchi, we minimize discoloration through optimized release agents and precise process control, ensuring high-quality, visually appealing products.
Our reliable die-cast components are widely used in industries such as automotive manufacturing, where both durability and aesthetics are paramount.