| Params | • Processing mode: Custom silica-sol investment casting according to customer-approved 2D drawings, 3D models or physical samples
• Material options: Carbon steel 1020, 1025, 1030, 1040, 1045 and 1050; alloy steel 4140, 4150, 4340 and 8620; stainless steel 201, 303, 304, 316, 316L, 17-4PH, 410 and 420
• Product types: Mounting brackets, guide supports, retaining sleeves, pivot connectors, adjustment fittings and customized sewing machine components
• Part weight: 2 g–550 g for applicable components, subject to product geometry and approved drawing requirements
• Casting accuracy: Tolerance grade T4–CT7
• Surface roughness: Ra 1.6–Ra 6.3, depending on casting, machining and finishing requirements
• Minimum wall thickness: 2 mm standard; 1 mm available for limited local areas subject to process review
• Fillet requirements: Minimum outer radius ≥ 0.3 mm; minimum internal fillet ≥ 0.5 mm
• Machinable features: Mounting holes, guide holes, threaded holes, pivot positions, locating surfaces, guide slots and critical mating interfaces
• Machining capability: CNC turning, milling, drilling, boring, tapping, grinding, deburring and precision guide-surface machining
• Heat treatment: Annealing, quenching, normalizing and other processes selected according to material and mechanical property requirements
• Surface treatment: Shot blasting, polishing, black oxide, zinc coating, nickel plating, painting, powder coating and customized finishing
• Inspection standard: Material composition, mounting-hole positions, guide dimensions, assembly fit, critical tolerances and appearance inspected according to approved drawings
• Production support: Prototype development, trial orders, small-batch production and stable volume production available
• Applied standards: ASTM, BS, DIN, JIS, ISO and customer-specified technical requirements | Material | Carbon steel / alloy steel / stainless steel, customized according to approved drawings and wear-resistance requirements |
