- No. 688, Jinji Road, Xiangzhou, Guangdong, China
Large appearance part stamping dies feature precise structural design and processing, delivering products with no wrinkles or indentations to meet customer appearance requirements.
Demand for large‑scale, high‑precision sheet metal stamping is primarily concentrated in large cosmetic and structural parts for air conditioners, refrigerators, dishwashers, lithium battery enclosures, and energy storage cabinets.
We offer large injection molds for cosmetic parts as well as large sheet metal stamping dies up to 10 tons in weight, covering a wide spectrum of home appliance categories including white goods, personal care, environmental appliances, and kitchen appliances. We particularly excel in products with large forming dimensions and demanding surface quality requirements, such as dishwasher panels and other PCM‑coated cosmetic parts.
We are deeply experienced in the new energy sector, mastering core technologies for large sheet metal stamping dies for lithium‑ion battery enclosures – encompassing CAE simulation, deep‑drawing processes, and precision manufacturing. We deliver high‑precision, long‑life die solutions widely serving the power battery and energy storage industries.
The product material is PCM pre-coated steel sheet. After stamping and forming, the part is directly assembled, and the appearance requirements are strict: no wrinkles, indentations, or forming scratches on the surface.
Control mold assembly clearances within ±0.02 mm.
Apply coating treatment to mold components to reduce friction and improve surface quality.
• The product meets all customer 2D drawing dimensions and assembly requirements.
• The product achieves the required appearance – free from wrinkles, indentations, and forming scratches.
Integrated CAE Simulation & Precision Stamping Process Solutions
Technical control for the large die of the air conditioner outdoor unit front panel:
① To avoid flow marks on the product surface, CAE simulation is adopted during the drawing process to verify material flow behavior, and material-resistance ribs are added to moderate material flow.
② The intermediate guide flanging hole is formed in four steps (pre-piercing → drawing → fine piercing → flanging) to prevent flanging cracking.
③ CAE reverse calculation for trimming line; tolerance of assembly holes: ±0.3 mm.
④ A contoured polyurethane cushion is fitted on the upper die for V-bending to prevent swing and deformation.
Technical control for top cover die:
① A gradual radius is adopted on the drawing cavity at profile corners to eliminate drawing cracking.
② Side trimming structure adopts dual-guide high-precision guidance, ensuring clean, burr-free trimming edges.
③ A stacked edge on the product profile for anti-scratch; a double movable forming structure is applied for full-perimeter 90° side bending to achieve a uniform bending profile and smooth stripping.
The sheet metal die for the pressure cooker decorative plate guarantees a scratch-free, indentation-free, and burr-free surface:
① CAE simulation is used to verify springback in large-arc forming, ensuring smooth assembly of snap clips without deformation.
② For the perimeter curling operation, a double movable forming structure for full-perimeter curling delivers a consistent curling profile and smooth stripping.
The part is produced by an 800-ton hydraulic press with robotic handling:
① Copper alloy is used for the drawing punch & cavity to ensure premium surface quality.
② Curling feature with a roundness tolerance of 0.3 mm, formed in 3 stages.
Material: PCM pre-coated metal sheet. CAE analysis is performed to quantify springback at radii, avoid material piling at forming corners, and eliminate wrinkling, indentation, and forming scuff marks on the surface.
We offer turnkey large die solutions, from product design to mass production, and has earned broad market recognition. The company holds multiple international system certifications including ISO9001, and serves globally renowned clients such as Gree, Daikin, VALEO, and DENSO.
Tell us your needs, and we will engineer a customized precision die for you. – we’ll get back to you within 24 hours. Your information is secure and will only be used for project consultation.
