In industries such as automotive, large home appliances, and aerospace, ultra-large mold bases exceeding 4 meters (4000mm) act as critical structures that dictate the overall quality of the mold. This is because the mold base is not merely a structural part, but a fundamental platform that determines the precision and service life of the mold.
However, unlike standard mold components, machining these ultra-large mold bases presents several technical challenges. Due to factors like equipment scale, thermal deformation during processing, and difficulties in managing straightness over long lengths, very few manufacturers can consistently maintain high precision.
To overcome these technical hurdles, SG MOLD has established large-scale machining equipment and a precision process control system, securing the capability for stable, precision machining of 4m-class ultra-large mold bases.
1. Equipment Competitiveness: Facility System for 4m Ultra-Large Machining
SG MOLD has built a large-scale precision equipment infrastructure for machining ultra-large workpieces with an A-axis length of 4000mm or more.
Firstly, using a large 5-face machining gantry machining center enables multi-face processing of large mold bases in a single setup. This is a key factor in effectively reducing reclamping errors, which are common in large workpiece machining, and maintaining precision.
Furthermore, the equipment configuration allows for stable machining of large workpieces with a B-axis (width) of 2000mm or more and an H-axis (height) of 800mm or more, enabling it to handle the production of large automotive and industrial molds.
Post-machining, a large CMM (Coordinate Measuring Machine) is used to precisely measure straightness, flatness, and parallelism across the entire length, ensuring stable quality control even for ultra-large mold bases.
2. Core Technology: Deformation Control for Ultra-Large Mold Bases
The most significant technical challenge in machining large mold bases is managing machining deformation. As the length increases, even minor errors can be magnified into major issues during mold assembly.
To prevent such problems, SG MOLD applies systematic process control.
First, an internal stress relief process for large S50C or P20 materials minimizes the potential for deformation after machining. Typically, if internal stress remains in ultra-large steel materials, warping can occur during long-term use. Therefore, after rough machining, a heat treatment process is applied to stably eliminate internal stress.
Additionally, large deep hole drilling technology is applied for cooling channel machining, maintaining precise straightness even over long drilling distances. This is a crucial factor directly related to the cooling efficiency of injection molds.
Based on this process control system, SG MOLD maintains precision management at the level of ±0.01mm even for large mold bases.
3. Delivery Competitiveness: Rapid Production of Ultra-Large Non-Standard Mold Bases
In the mold industry, product development and mass production schedules are closely linked, making delivery management capability a critical competitive factor.
Through its in-house production facilities and process standardization, SG MOLD has built a system capable of rapid production response even for ultra-large non-standard mold bases.
The company breaks down complex custom mold base structures into standardized process steps and utilizes a parallel machining system with multiple CNC machines to increase production efficiency. Furthermore, to ensure smooth collaboration with Korean customers, it operates Seoul and Daegu offices and a Hwaseong A/S support center, providing design consultation and technical support.
4. Application Industries
SG MOLD's ultra-large mold bases are utilized across various industries.
In the automotive industry, they are applied in molds for bumpers, large interior parts, and structural components. In the large home appliance sector, they are used in manufacturing molds for TV exterior parts over 65 inches or structural parts for large washing machines.
Furthermore, ultra-large mold bases are widely used in molds for industrial equipment and large plastic product production.
Conclusion
A 4m-class ultra-large mold base is not just a simple mold component but a core foundational structure that determines the overall quality of the mold. Therefore, it is crucial to select a manufacturing partner equipped with large-scale machining facilities, stable process control, and accurate quality inspection systems.
Based on its large-scale machining equipment and precision process control system, SG MOLD offers stable technical capabilities for the production of ultra-large non-standard mold bases.