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Views: 6 Author: Site Editor Publish Time: 2026-04-07 Origin: Site
In the rapidly evolving world of aluminum extrusion, size, efficiency, and precision separate market leaders from followers. As demand grows for ultra‑wide profiles in electric vehicles, mass transit, and industrial heat sinks, the need for 920mm super large aluminum extrusion dies has never been greater.
We are a specialized multi‑hole mould manufacturer with over 17 years of hands‑on experience. Our engineering team designs and builds large‑format extrusion dies that consistently deliver tighter tolerances, longer service life, and higher productivity. This article explores how our 920mm multi‑hole dies transform production lines and reduce cost per part.
Standard extrusion dies typically range from 150mm to 400mm in diameter or width. A 920mm super large die belongs to an entirely different class. It requires:
Massive steel blocks with exceptional internal homogeneity
Advanced heat treatment to prevent distortion during extrusion
High‑rigidity CNC machining capable of handling oversized workpieces
Sophisticated stress simulation to balance metal flow across an extremely wide front
Our manufacturing process starts with premium H13 or SKD61 tool steel. Through vacuum heat treatment and deep cryogenic processing, we achieve a uniform hardness of HRC 50–54 across the entire die body – critical for 920mm wide extrusions where thermal expansion can vary significantly from center to edge.
A multi‑hole mould is designed to extrude two, four, or even more identical profiles in a single press cycle. When combined with a 920mm super large die, the advantages multiply:
Feature | Benefit |
|---|---|
Multiple cavities per die | 2–4× output without increasing press time |
Symmetrical flow channels | Balanced wall thickness and straightness |
Reduced extrusion ratio per hole | Lower press tonnage requirement |
Optimized die layout | Minimal center‑to‑edge speed variation |
For high‑volume applications – such as LED display frames, solar panel rails, or battery tray side beams – a 920mm multi‑hole aluminium extrusion die can cut energy consumption by 30–50% and reduce scrap rates to below 5%.
Maximum die size : 920mm × 400mm (customizable up to 1100mm)
Number of holes : 2 to 8, depending on profile geometry
Profile weight range : 0.5 kg/m to 25 kg/m
Wall thickness : 0.8mm (solid) / 1.5mm (hollow) up to 15mm
Press compatibility : 2000T to 7500T extrusion presses
Surface finish : Ra ≤ 1.6 μm after polishing
Every multi‑hole mould is validated using a CMM (Coordinate Measuring Machine) and a dedicated flow simulation software (Altair Inspire Extrude or equivalent). We also provide die re‑sleeking and nitriding services to extend tool life beyond 80,000 extrusions.
Our customers use these large aluminium extrusion dies in the following demanding sectors:
Battery tray frames – 920mm width accommodates full‑size trays with one profile
Bumper beams – multi‑hole design allows simultaneous production of left and right beams
Anti‑intrusion beams – ultra‑wide, thin‑wall profiles requiring strict straightness
Large heat sinks for 5G base stations and EV charging stations
LED display mechanical frames – 920mm matches standard module sizes
Solar panel rails – multi‑hole moulds output two rails per stroke
Train side panels and floor profiles
Conveyor rails for automated warehouses
Structural components for modular buildings
Not every tool shop can produce reliable 920mm super large extrusion dies. The challenges include:
Metal flow balance : Over a 920mm width, the peripheral area flows slower than the center. Our patented die design uses variable bearing lengths and stepped porthole bridges to equalize exit speeds.
Die deflection : Under 5000+ tons of press force, a large die can bow. We incorporate reinforcement ribs and thicker backing plates to maintain flatness within 0.1mm.
Thermal management : Multi‑hole layouts generate asymmetric heat. Our cooling channel design and periodic stress relief ensure consistent hardness after thousands of cycles.
As a specialized multi‑hole mould manufacturer, we have invested in a dedicated large‑die production line:
5‑axis gantry CNC (working area 1600×1000mm)
Vacuum furnace with 1200mm effective zone
Ultrasonic flaw detection for every steel block
3D optical scanning for profile geometry validation
ISO 9001:2015 – Full traceability from steel lot to final inspection
IATF 16949 (in process) – Automotive‑grade documentation
100% CMM inspection of critical dimensions
Extrusion try‑out available on our own 3600T and 5000T presses (optional service)
We provide a detailed inspection report with every 920mm multi‑hole die, including:
Hardness test (five points across die face)
Flow simulation vs. actual extrusion log
Photographs of the die before/after nitriding
Customer requirement : Produce 4 identical side beams per cycle, each 900mm wide, 2.5mm wall thickness, 6063 aluminum alloy. Tolerance: ±0.2mm on height, straightness 0.5mm/m.
Our solution : A 920mm super large aluminium extrusion die with 4 symmetrical porthole cavities. Die design included:
Step‑wise bearing lengths (2mm at center, 4mm at edges)
Reinforced mandrels for hollow sections
PVD coating on critical wear surfaces
Results :
Extrusion speed: 4.5 m/min (single‑hole baseline was 2.8 m/min)
Die life: 65,000 kg before first re‑sleeking
Scrap rate: 3.2% (vs. 8.5% with previous tooling)
Payback period: < 3 months for the customer
Investing in a 920mm super large aluminum extrusion die – especially a multi‑hole mould – is one of the fastest ways to scale up production while lowering unit cost. As an experienced multi‑hole mould manufacturer, we combine large‑format precision with deep process understanding to deliver dies that perform reliably, cycle after cycle.
Whether you need a 920mm die for automotive structural parts, LED frames, or industrial heat sinks, our engineering team is ready to co‑design the optimal solution.
Email: info@eps-aluminum.com
Website: https://www.eps-aluminum.com/
