A general introduction to the process flow

I. Design and management of process flow
a. Design principles
◉ Rationality: Meet product quality and quantity requirements, with controllable operations.
◉ Economy: Cost control and efficient utilization of resources (such as reducing emissions of three wastes and adopting automated equipment).
◉ Environmental protection and safety: Reduce pollution and ensure personnel safety (such as wastewater treatment during electroplating).
◉ Advanced technology: Mature technology and equipment (such as CNC machining and robot welding) are prioritized.
b. Management points
◉ Optimization mechanism: Continuously improve processes, absorb employee suggestions and technological innovations.
◉ Coordination and control: cross departmental collaboration, equipment maintenance, monitoring of key control points (such as tolerance detection in mold processing).
◉ Lean production: Reduce inventory and waste through single piece flow and synchronization (such as Toyota's production model).

II.Typical Process Example
a. Sheet metal processing flow
Material requisition → Material retrieval → Drilling → Bending → Welding → Grinding → Spraying → Testing → Storage.
b. spraying process
Spray primer → outer coating → outer coating → baking (180-250 ℃) → quality inspection 7.
c. Mold production process
Design → Procurement → Processing (turning, milling, electrical discharge machining) → Meeting → Trial mold → Evaluation → Batch production.
d. Electroplating process
Cleaning → acid etching → electroplating → rinsing → drying (process parameters need to be adjusted for different metals).

III. Process flow step decomposition
◉ Raw material processing: screening, purification, pre-treatment (such as metal plate uncoiling and cutting).
◉ Production and processing: forming, heat treatment, chemical treatment (such as stamping, welding, electroplating).
◉ Quality control: Inspection of semi-finished and finished products (such as size testing, performance testing).
◉ Packaging and labeling: Protect the product and provide information (such as labels, shock-absorbing packaging).
◉ Finished product inspection: Conduct a comprehensive inspection of the appearance and performance before leaving the factory.