As technical staff at Haomei Aluminum, a Chinese company specializing in the production and export of PCB drill entry sheets, and drawing on years of experience supplying PCB manufacturers both domestically and internationally, we developed lubricant aluminium entry boards.
Lubricant aluminium entry boards is positioned as a dedicated auxiliary gasket for the PCB drilling process. Structurally, it adopts a double-layer composite structure of “high-purity aluminum substrate + special water-soluble lubricating oil coating,” with no unnecessary redundancy, perfectly meeting the practical needs of PCB drilling. The substrate is made of high-purity 1060/1100 aluminum sheet with a purity of ≥99.6%, precision-formed by cold rolling to ensure uniformity, freedom from impurities and pinholes, preventing aluminum shavings residue or substrate deformation during drilling. The surface oil coating uses our proprietary water-soluble PCB-specific lubricating and rust-preventing oil, with a coating thickness precisely controlled between 30~70μm. It bonds tightly to the aluminum substrate, preventing peeling and accumulation, providing both lubrication and easy removal via subsequent washing, without contaminating the PCB board or drilling equipment.
Regarding specifications, we combine standardized production with customized adaptations, taking into account mainstream export demands and differences in PCB production scenarios. The standard thickness of lubricant aluminium drilling entry sheets ranges from 0.15~0.3mm, with 0.2mm being the most commonly used export specification, balancing rigidity and flexibility. Widths are compatible with internationally recognized sizes such as 1220mm, 1240mm, and 1500mm, and lengths can be cut to order, with a maximum custom length of 6000mm, meeting the roll or sheet requirements of different PCB production lines. Strict tolerance control is implemented, with thickness tolerance ≤ ±0.005mm, flatness ≤ 0.02mm/m, and perpendicularity deviation ≤ 2mm. It fully complies with international environmental standards such as RoHS and REACH, meeting the production requirements of high-end overseas PCB manufacturers. Shipments can be made directly through Qingdao and Shanghai ports, and it is compatible with common export payment methods such as L/C and T/T.
Core technologies focus on three key aspects, showcasing our company’s production capabilities.
First, the precision rolling technology for the substrate employs a multi-pass cold rolling process, coupled with an online thickness detection system, to ensure uniform substrate thickness and prevent drilling positioning misalignment caused by thickness deviations.
Second, the optimized oiling process utilizes a precision roller coating method to control oiling uniformity, while high-temperature curing enhances oil adhesion, solving common industry problems such as oil peeling and insufficient lubrication. Furthermore, the oiling formula can be adjusted according to customer needs, adapting to demanding scenarios such as high-density PCBs and small-diameter drilling.
Third, the surface treatment technology involves electrolytic polishing of the substrate surface, achieving a roughness ≤0.8μm, reducing friction during drilling and improving the adhesion stability of the oil layer. This also balances heat dissipation and rust prevention, meeting the moisture and rust protection requirements of long-distance sea transport.
These practical advantages align with actual production scenarios, highlighting four core values based on our company’s export experience.
Firstly, it offers superior drilling protection, effectively preventing issues like copper foil burrs and rough hole walls during PCB drilling, thus improving drilling pass rate and CPK value, and reducing production costs.
Secondly, it provides excellent lubrication and heat dissipation; the oil coating reduces drill bit wear, extending drill bit lifespan by over 30%, while the excellent thermal conductivity of the aluminum substrate quickly dissipates drilling heat, preventing drill bit annealing and PCB board overheating damage.
Thirdly, it boasts strong environmental compatibility; the water-soluble oil can be directly washed away with water, leaving no residue or pollution, meeting overseas environmental production requirements.
Fourthly, it is highly adaptable to export; standardized packaging uses wooden pallets and moisture-proof film, and “face-to-face” or “top-to-bottom” packaging methods can be selected according to customer needs. The delivery cycle for standard specifications is 10-15 days, and for customized specifications, it is approximately 30 days. Free samples are available (shipping costs borne by the customer), meeting the bulk purchasing and urgent order needs of overseas customers.
Haomei Aluminum, as a professional aluminum plate manufacturer and exporter, always focuses on the practical needs of PCB production, optimizing product technical details. Our products have been exported to many countries and regions worldwide, suitable for various PCB drilling scenarios. We can customize lubricant aluminium entry boards to specific specifications based on customer production parameters, providing overseas customers with highly adaptable PCB auxiliary material solutions with stable product quality and professional technical support.