Quality Sheet Metal Service

Sheet metal fabrication is a manufacturing process that involves cutting, bending, forming, and assembling flat metal sheets into desired shapes and structures. It uses techniques like laser cutting, punching, bending, welding, and finishing to create parts for industries such as automotive, aerospace, and construction.

常用材料包括不锈钢（耐腐蚀）、铝（轻质、坚固）、低碳钢（价格实惠、坚固）、铜（导电）、黄铜和锌。板材厚度通常在 0.06 英寸到 0.25 英寸之间，较薄的板材延展性好，较厚的板材则适用于重型应用。

The primary processes are cutting (e.g., laser, plasma, waterjet, shearing), forming (e.g., bending, stamping, rolling), joining (e.g., welding, riveting, adhesives), and finishing (e.g., coating, polishing). Each process is chosen based on design requirements and material properties.

表面处理可以提升外观、耐用性和功能性。常见的表面处理方式包括：

• 机加工表面 (Ra1.6)：直接从数控机床加工而来，具有经济实惠的表面光洁度，可见刀痕。
• II 型阳极氧化（黑色，光亮）：提高耐腐蚀性和耐磨性，是铝材的理想选择，并可选择染色。
• 抛光（Ra0.8，镜面抛光）：可获得高光泽、光滑的表面，增强金属的美感。
• 喷砂（#220）：通过喷射介质清洁和处理表面，从而形成均匀的哑光质感。
• 滚筒抛光：通过在滚筒内摩擦来平滑和抛光小零件，从而获得均匀、略带纹理的表面。
• 电解抛光：通过化学方法使表面光滑亮泽，提高耐腐蚀性。
• 铝酸盐（黄色化学薄膜）：提供防腐蚀保护并增强油漆在铝上的附着力。
• 拉丝表面（#220）：形成单向缎面质感，最大限度地减少划痕的可见性。
• 粉末涂装：可形成厚实、耐用、耐磨的涂层，并提供多种颜色和纹理选择。
• 电镀（镍，光面）：在材料表面镀上一层薄金属层，以提高耐磨性、耐腐蚀性和导电性。
• 黑色氧化：一种用于黑色金属的转化涂层，可增强耐腐蚀性并减少光反射。

Precision is achieved using high-precision equipment (e.g., CNC machines, laser cutters), skilled operators, and accurate engineering drawings. Maintaining proper tolerances (e.g., ±0.05 mm for tight precision) and consulting with fabricators during design ensure accuracy. Correct processing techniques, like overbending to account for springback, also help.

Control costs by selecting cost-effective materials (e.g., mild steel over aluminum), optimizing designs for manufacturability (e.g., uniform thickness, avoiding tight tolerances unless necessary), using efficient processes (e.g., laser cutting for precision), minimizing waste, and improving production efficiency to reduce defects. Outsourcing to specialized fabricators can also lower costs by avoiding in-house equipment investments.

Advantages include high precision, cost-effectiveness for prototypes and production, durability of parts, scalability from prototyping to large-scale runs, and versatility in creating complex shapes. It’s also compatible with a wide range of materials and finishes for functional and aesthetic purposes.