Customized 35CrMoV Steel Spool Of Aluminum Foil

Customized 35CrMoV Steel Spool Of Aluminum Foil 

Product Application

The 35CrMoV steel sleeve is mainly used in aluminum foil rolling equipment. Depending on the mill configuration, the sleeve can serve as a roll bearing sleeve, drive connection sleeve, or guide and positioning sleeve. These applications require the component to maintain dimensional accuracy and mechanical stability during continuous high-speed operation.

Aluminum foil rolling is characterized by relatively low rolling force but high rotational speed. In the supplied application data, rolling speed can reach up to 2000 m/min. Under these conditions, the steel sleeve needs to maintain stable geometry, resist fretting wear, and provide a suitable surface finish for reliable operation.

The sleeve also contributes to roll positioning and running stability. Accurate machining of the inner hole and mating surfaces helps maintain the required concentricity and reduce vibration or unbalance during operation.

35CrMoV Steel and Performance

35CrMoV is used as the specified steel material for this customized sleeve. The material can provide the mechanical performance required for demanding rotating components when the appropriate manufacturing and heat-treatment processes are applied.

For aluminum foil rolling applications, particular attention is given to resistance against fretting wear, dimensional stability, and surface quality. The supplied application requirements specify a surface finish of Ra ≤ 0.4 μm for critical surfaces, helping reduce the possibility of surface marks affecting the rolling process.

Where specific mechanical properties are required, GW Precision can carry out heat treatment for the customized 35CrMoV steel sleeve and perform corresponding mechanical property testing according to the customer's requirements.

Precision Machining Process

GW Precision has developed machining methods for large steel sleeves and spools. The workblank is processed using dedicated hole-machining equipment, followed by boring and precision machining of the inner hole.

During boring, the workblank is carefully adjusted to control the concentricity between the front and rear ends of the aperture. The machining method keeps the sleeve fixed while the tool shaft rotates to cut the inner hole. This arrangement helps reduce taper and shape errors and supports stable machining accuracy.

Chip removal is also controlled during inner-hole machining. Smooth chip evacuation helps maintain the machining surface and reduce the risk of scratches or other surface defects. These process controls are particularly important for sleeves used in high-speed aluminum foil rolling equipment.

（production process）

Heat Treatment and Quality Control

Heat treatment is applied when required by the material specification and customer's technical requirements. GW Precision can conduct heat treatment for customized 35CrMoV steel sleeves and test the resulting mechanical properties.

Quality control covers the key dimensions and machining characteristics specified for the product. Inspection is combined with the machining process to verify that the finished sleeve meets the applicable drawing and technical requirements.

For high-speed rolling applications, dimensional consistency, inner-hole machining quality, concentricity, and surface finish are important manufacturing considerations. The production process is therefore arranged according to the sleeve structure, required accuracy, and final application.

Customized Manufacturing

GW Precision provides customized design, development, manufacturing, and sales services for steel sleeves and spools. Customers can specify the required dimensions, material, application, and technical requirements according to their rolling equipment.

The example specification for this product is 35CrMoV, 665 × 605 × 1900 mm. Other dimensions and configurations can be manufactured according to customer drawings and project requirements.

GW Precision has its own machining capability and a developed production management system, supported by experienced technical personnel and established quality-control procedures. The company also provides after-sales service for customized products.

Packaging

After machining and inspection, the steel sleeve is prepared for storage and transportation with suitable packaging protection. Before packing, the product surface is checked and cleaned to help maintain its condition during handling and shipment.

For large and precision-machined steel sleeves, packaging is arranged to protect the machined surfaces and maintain product cleanliness during transportation. The packaging method can be coordinated with the product dimensions and customer's delivery requirements.