Major Aluminum Group Selects FangRong for High-Precision EV Battery Case Drawing Machines

Leading Chinese aluminum supplier partners with FangRong Precision Machinery to equip next‑generation production line for prismatic EV battery enclosures.

SHANGHAI, April 26, 2026 – A major Chinese aluminum group, one of the country's foremost suppliers of lightweight aluminum components to the new energy vehicle (NEV) sector, has selected FangRong Precision Machinery to supply a complete line of high‑precision hydraulic cold drawing machines for the production of prismatic EV battery cases, the company announced today.

The order, placed following a competitive technical evaluation among multiple equipment suppliers, will see FangRong deliver a fully integrated precision cold drawing system designed specifically for the manufacture of high‑accuracy rectangular aluminum tubes used as battery enclosures. Delivery is scheduled for the third quarter of 2026.

Technical Specifications of the FangRong EV Battery Case Drawing System

The system is configured to process 3003‑series and 6061‑series aluminum alloys into prismatic battery case profiles with the precision demanded by modern EV power cells:

• Hydraulic drawing force: Optimized range for aluminum cold drawing

• Case size capacity: Width 30–150 mm, length up to 600 mm

• Wall thickness range: 0.5–3.0 mm

• Dimensional accuracy: Achieves ±0.02 mm on outer dimensions and wall thickness

• Surface finish capability: Ra ≤0.4 µm, ready for insulation coating

• Production speed: Continuous high‑volume output compatible with battery megafactory demand

Meeting the Extreme Demands of EV Battery Production

The global EV supply chain's requirement for battery enclosures has intensified significantly, driven by the increasing adoption of prismatic cell formats among leading automotive manufacturers. Aluminum cases must deliver exceptional dimensional consistency, superior surface quality free from scratches or pits, thin yet uniform walls to maximize internal cell volume, reliable sealing surfaces for subsequent laser welding, and contamination‑free processing environments. The FangRong precision cold drawing system meets each of these requirements through advanced engineering.

A materials engineer specializing in battery component manufacturing noted that producing consistent, high‑quality battery enclosures is non‑negotiable for cell safety and performance, and that equipment capable of delivering micron‑level repeatability at high volumes is a critical enabler for the industry's continued expansion.

Core Technologies Integrated into the FangRong System

The precision cold drawing line incorporates several proprietary technologies developed by FangRong:

• Servo‑hydraulic drive system: Provides ultra‑smooth, vibration‑free drawing force essential for preserving the pristine surface finish required for anodized aluminum cases

• Closed‑loop thickness control: Real‑time wall thickness monitoring with automated adjustment to maintain ±0.02 mm tolerance across the entire case length

• Specialized die technology: Diamond‑like carbon (DLC) coated dies engineered to prevent aluminum adhesion (galling) during high‑volume production runs

• Automated material handling: Integrated loading, drawing, and stacking systems for continuous, lights‑out operation

• Recipe management: HMI with stored processing parameters for different aluminum alloys, preventing operator error and ensuring batch‑to‑batch consistency

Why Hydraulic Cold Drawing for Aluminum Battery Cases

Cold drawing, rather than deep stamping or impact extrusion, has emerged as the preferred manufacturing method for prismatic battery cases because the cold drawing process provides superior wall thickness uniformity across the entire length, eliminates wrinkling or thinning at corners that can compromise cell sealing, achieves the smooth interior surface required for consistent cell performance, and avoids material cracking or stress concentration common in multi‑stage stamping operations. The FangRong hydraulic drawbench is specifically engineered for this application, delivering the smooth, controllable force that aluminum's ductile properties demand.

FangRong's Proven Track Record in Precision Metal Forming

Established in 1998, FangRong Precision Machinery has built a global reputation for manufacturing cold drawing machines, straightening equipment, and related metal processing machinery. The company’s products are deployed in over 30 countries across aerospace, automotive, medical, and industrial applications. The growing NEV battery sector has become a strategic focus for FangRong, with several industry‑leading aluminum processors already operating the company’s precision drawing equipment. One manufacturer of structural components for NEVs reported achieving wall thickness tolerances within ±0.03 mm while reducing scrap rates by 40 percent after adopting FangRong's special aluminum cold drawing technology.

Automation Capabilities Designed for Battery Megafactories

Recognizing the massive volume requirements of modern battery production, the FangRong drawing line features: fully automatic infeed systems that accept pre‑cut aluminum cups directly from a magazine with robotic handling; in‑line laser measurement stations that verify dimensions in real time and auto‑adjust the feeding system to compensate for incoming material variations; automatic part ejection and stacking that delivers finished cases in orientation‑controlled bundles ready for downstream operations; and data logging and networking capabilities for seamless integration with MES (Manufacturing Execution Systems) and full ISO/IATF traceability.

Industry Context: The Soaring Demand for Precision Aluminum Cases

According to industry analysts, the market for EV battery enclosures is projected to grow at a compound annual rate exceeding 20 percent through 2030, driven by global automakers' aggressive electrification targets. Prismatic battery cells, which require rectangular aluminum cases, are gaining significant market share due to their superior space utilization and structural integration advantages. This demand has intensified the need for high‑precision, high‑volume cold drawing equipment, a gap that FangRong is positioned to fill.

The Road Ahead

FangRong will continue to collaborate closely with its aluminum group customer throughout installation, commissioning, and production ramp‑up, with comprehensive local technical support and remote diagnostics. The company is also engaging with several other major aluminum processors and battery manufacturers across China, Europe, and Southeast Asia for similar precision cold drawing lines.

About FangRong Precision Machinery

FangRong Precision Machinery (Dongguan Fangrong Metallurgical Equipment Co., Ltd.), established in 1998, is a leading manufacturer of cold drawing machines, precision straightening machines, pointing machines, and related metal processing equipment. Headquartered in Dongguan, China, FangRong serves customers in the automotive, aerospace, medical, electrical, and new energy sectors worldwide.

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Keywords: EV battery case, aluminum cold drawing machine, prismatic battery enclosure, precision hydraulic drawbench, new energy vehicle battery manufacturing, aluminum battery shell drawing, FangRong Precision Machinery.