As an essential item in modern office scenarios, the manufacturing process of filing cabinets integrates multiple processes such as metal processing, structural design, and surface treatment. Taking metal filing cabinets as an example, this article will systematically break down the eight core steps in the entire production process to help readers comprehensively understand the manufacturing logic of this industrial product.

 

Stage 1: Requirement Planning and Industrial Design

Before manufacturing begins, market research needs to be completed to clarify the customers' load - bearing requirements, usage scenarios, and safety levels for filing cabinets. Based on the data feedback, engineers use 3D modeling software to draw accurate drawings, define the material and tolerance standards for each component, and pay special attention to details that directly affect the user experience, such as the structure of drawer rails and the position of locks.

 

Stage 2: Raw Material Screening and Management

Cold - rolled steel sheets are the preferred material due to their high strength and strong corrosion resistance. The thickness of the sheets usually ranges from 0.8 to 1.2 mm. Suppliers are required to provide environmentally friendly metal materials that meet the RoHS standard. The purchasing department must verify the tensile strength test reports of the materials and implement traceable management for inventory batches.

 

Stage 3: Precision Machining and Forming

Laser cutting equipment divides the metal sheets into components such as the top plate and side plates, with the precision controlled within ±0.1 mm. A 90° bending process is completed by a CNC bending machine, and the mold pressure value setting needs to refer to the ductility parameters of the sheets. For special structural parts such as lock holes and rail grooves, multi - station stamping equipment is used for batch forming.

 

Stage 4: Surface Treatment Process

The processed metal parts need to go through degreasing and pickling processes to remove the oxide layer, and then enter the phosphating treatment line to form a phosphate protective film of 5 - 8 μm. The electrostatic powder spraying technology is used to cover an epoxy resin coating. After curing at a high temperature of 200°C, the surface adhesion can be increased by more than 60%, and the wear - resistant times can exceed 5000 times of steel wool testing.

 

Stage 5: Assembly Quality Control

A professional quality inspection team uses tools such as calipers and 3D scanners to check the dimensional qualification rate of the parts. The final assembly line adopts a modular operation mode, and processes such as welding the cabinet frame, leveling the slide rails, and installing the locks are completed in sequence. The drawer sliding test requires that there should be no jamming after 5000 times of opening and closing.

 

Stage 6: Multiple Testing and Verification

The finished products need to pass a three - level testing system: the functional test covers the drawer load - bearing (≥100 kg) and tilt stability; the structural test includes a 6 - level earthquake - resistance simulation; the appearance quality inspection uses multi - angle light sources to identify coating defects. All data are entered into the quality traceability system.

 

Stage 7: Intelligent Packaging Solution

The anti - collision packaging uses a composite structure of EPE pearl cotton and corrugated paper, and PP corner protectors are added at the corners. Based on the difference in transportation distance, a vacuum moisture - proof layer should be added to the sea - freight packaging, and the compression - resistant design of the bottom pallet should be strengthened for land - freight packaging to ensure that the unboxing qualification rate remains above 99% after a 6000 - km transportation.

 

Stage 8: Full - Cycle Service Support

The manufacturer needs to provide installation video guidance and accessory supply services. The warranty period covers a 5 - year maintenance commitment for hardware parts and a 3 - year maintenance commitment for the coating. For B - end customers, value - added accessories such as archive management labels and partition dividers can be customized.

 

Throughout the entire production process, the factory must strictly implement the ISO14001 environmental management system to ensure that the recycling rate of electrophoresis wastewater reaches 85% and the purification efficiency of welding fumes exceeds 98%. Through the ERP system, digital control of the entire process from raw material procurement to shipping and delivery is achieved, effectively balancing production costs and quality requirements.

 

The manufacturing chain of metal filing cabinets demonstrates the refined operation of modern manufacturing. The technology selection in each link will directly affect the service life of the product and the user experience. Understanding these process details helps purchasers to evaluate product quality more professionally and provides a reference path for production technology optimization for industry practitioners.