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INDUSTRY CLUSTER · New materials

Suixi advanced aluminum composites

Battery-foil pinholes, strip waviness and composite-layer peel all appear in thin products, but follow different causal paths. Credible lot records connect melt chemistry and purification, cast or hot rolling, cold-reduction passes, annealing, slitting, surface condition and inline inspection.

Formation and regional foundations

Suixi extended recycled feed and basic aluminium work toward rolled products, battery foil, composites and components, placing melting, rolling, finishing and testing close together. Proximity shortens stock and test circulation, while alloy grade, product approval and customer links remain entity-, line- and lot-specific.

The Suixi review retains evidence through charge and melt, purification, cast or hot rolling, cold rolling and anneal, foil rolling and slitting, cladding and finishing, and inline inspection. Regional scale describes context; alloy, route, line and lot tests carry product capability.

Core geography: The boundary follows Suixi Economic Development Zone and county plants with production evidence. It covers recycled-aluminium melt, precision sheet, strip and foil, battery foil, aluminium composites, material for vehicles and rail, and directly processed parts. Generic building-profile trade, signed projects without a production line, and ceramic-aluminium projects lacking an aluminium-process link are not automatically included.

Aluminium process network from melt to coil

Six nodes across melt, stock, cold roll, foil, finish and release

Products may share equipment types, not alloy windows or release conclusions.

  • Charge, melt and purify — Scrap and primary metal are charged by alloy, with hydrogen, inclusions and elements controlled.
  • Cast roll or ingot hot roll — Stock is formed by the selected route with structure and surface recorded.
  • Cold roll and intermediate anneal — Reduction, tension, shape and cleanliness govern thin-gauge stability.
  • Foil roll, double and slit — Gauge, pinholes, burr, oil film and winding are controlled coil by coil.
  • Clad, coat or finish — Interface bond, wetting, coating and corrosion are product-specific.
  • Inline inspection and lot release — Chemistry, gauge, shape, surface, pinholes and mechanics bind to coil identity.

01 · Separate pinholes, waviness and peel first

Similar scrap appearances can require three evidence paths.

Battery-foil pinholes first lead to melt inclusions, filtration, foil reduction, roll surface and optical inspection. Strip waviness instead connects cross-width gauge, tension, roll crown and residual stress after annealing.

Composite-layer peel follows another path: core and clad grades, interface cleanliness, heating, reduction and later forming all affect bonding. Passing gauge alone cannot explain interface life.

A review therefore fixes product, alloy temper, dimension, coil and failure position before sampling. Combining all three as aluminium-quality fluctuation hides process responsibility.

02 · The melt file sets the starting point

Recycled content is not the only variable; feed identity and purification matter too.

The charge sheet identifies primary metal, return scrap and alloy additions by lot, not only total mass. Coatings, oil and inclusion loads from different feeds alter melting and filtration windows.

Spectrometry, temperature, hydrogen, degassing and filter-change records belong to one heat. When pinholes rise, melt records and stock-defect distribution precede a conclusion that foil rolling created them.

The local chain places recycled aluminium near rolled products, but does not mean producers share charge mixes or purification equipment. Heat evidence does not transfer between firms.

03 · Cast-roll and hot-roll routes start differently

The same final gauge does not imply the same stock structure.

Cast rolling joins solidification and deformation, so tip, gap, cooling and centre segregation matter. Ingot hot rolling adds homogenising, scalping and reheating. Their defect maps are not interchangeable.

Stock handoff reports not only gauge and width but grain, second phase, edge cracks, streaks and defect coordinates. A certificate alone cannot show whether later pinholes or waviness were inherited or newly formed.

Automotive sheet emphasises forming and strength; battery-foil stock emphasises cleanliness, uniform structure and ultrathin rolling stability. A high-end label does not justify one release limit for both.

04 · Shape comes from a chain of tension and heat

Waviness is not explained by final levelling alone.

Each cold pass retains entry and exit gauge, speed, tension, force, emulsion and shape data. Uneven cross-width reduction can stay hidden in a coil until unwinding or annealing.

Roll grinding, thermal-crown control and shape-roll calibration are matched to the defect window. Shift-average gauge misses local waviness and cannot locate drift after a roll change.

Intermediate anneal restores ductility and releases residual stress. Furnace uniformity, ramp, soak and load position follow the coil; a setpoint does not replace measured material condition.

05 · Battery foil pushes cleanliness and winding

Ultrathin is more than a smaller gauge number.

Foil-oil cleanliness, filtration, roll surface, reduction and tension jointly affect pinholes, bright and matte sides, gauge spread and breaks. An anomaly is located by mill, pass and mother coil.

During doubling or slitting, edge burr, interlayer slip, coil build and splice position affect later coating or punching. Finished-coil labels should trace to the mother coil and each knife change.

Public Zhongji material confirms local cold rolling, foil rolling, slitting and battery-foil lines. It proves one manufacturing route, not shared equipment or orders across the cluster.

06 · Cladding and finishing retain interface evidence

Appearance cannot replace bond, wetting or corrosion evidence.

Clad material binds core, clad, interface cleanliness, heat and reduction; coated foil instead tracks degreasing, surface energy, coat weight, cure and adhesion. A good surface means different things in the two products.

Machining, blasting, cleaning, anodising, electrophoresis and coating for vehicle or equipment parts separately control size, roughness, film and corrosion. Finish lots cannot detach from alloy and heat-treatment condition.

Jiayuan permits establish melting, extrusion and downstream finishing routes; they do not automatically establish battery foil or clad-sheet capability. Its role is stated by the specific approved process.

07 · Coil identity is the common coordinate

A regional yield number cannot release a coil.

Inline gauge and shape retain time series; surface and pinhole inspection retain coordinates; laboratory chemistry, tensile, cupping or peel results write back to heat and coil.

Sampling represents head, middle, tail and width; one edge coupon cannot represent whole-coil shape or pinholes. Continuous defects are isolated by coordinate and adjacent length.

A public test platform can provide methods and equipment, while product responsibility remains with the producer. Platform, plant and customer results need the same grade, temper and lot context.

08 · Cluster scale describes context, not warranty

One-million-tonne capability and one-coil quality sit at different levels.

Zhongji, Limu and Jiayuan are publicly confirmed Suixi producers illustrating battery foil, precision rolled products, and aluminium material and finishing routes. This does not prove shared customers, recipes or capacity.

One million tonnes of capability, nearly RMB 20 billion of output, 68 projects and 28 platforms are regional capability, dated output, project and platform counts. None can be averaged into a firm’s volume or quality.

Real cluster coordination lets heat, stock coil, rolling pass, anneal batch, slitting mother coil and customer return trace to one another while preserving each entity’s responsibility.

Sources and reading notes

MIIT, NDRC and municipal and county sources establish national identity, boundary, dated figures and producer samples; environmental approvals verify entity, address and process. Planned capacity, construction and operation remain separate, and customer links appear only when explicitly sourced.

  • The MIIT list confirms the national formal name of Suixi’s advanced aluminium-composite cluster.
  • The 2025 development report records annual aluminium-product capability of one million tonnes.
  • The same report records annual metal-new-material output at nearly RMB 20 billion.
  • NDRC material records 28 innovation and public-service platforms for the local aluminium chain.

Related companies

These companies have a locally relevant industry role supported by public information. Order is not a ranking, inclusion does not imply authorization, partnership or endorsement, and Hello China does not participate in or guarantee transactions.

A company may request a free correction or removal through the formal channel if its record is inaccurate or it does not wish to be shown. Do not send business licences, authorization letters or other sensitive files through insecure channels.

  • Anhui Jiayuan Aluminium Co Ltd — Jiayuan in Suixi makes aluminium billet, extruded material and downstream finishes; a 2026 upgrade adds blasting, machining and finishing. Permitted capability remains separate from shipment.
  • Anhui Limu New Material Technology Co Ltd — Limu produces precision rolled aluminium and hydrophilic foil in Suixi, with published project routes for household, electronic, decorative and battery foil. EIA design scale is not current output.
  • Anhui Zhongji Battery Foil Technology Co Ltd — Zhongji manufactures precision aluminium strip and battery foil in Suixi through cast rolling, cold rolling, foil rolling and slitting. Planned capacity remains separate from equipment reported in operation.
  • Request a company-record correction or removal — Requests are reviewed by a person, handled promptly after verification, free of charge and not tied to commercial cooperation.

Sources

Use the original publishers to check dates, scope and definitions; public material is not a transaction guarantee.