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Quality Management
ELECTRIC HOIST LEAN PRODUCTION LINE
The production workshop for Dafang Heavy Machinery's electric hoists comprises an assembly line for hoist manufacturing and an automated spray painting and drying line, with an annual production capacity of 30,000 electric hoists. Our electric hoists feature an aesthetically pleasing design, reliable quality, low noise levels, and stable performance. The outer casing is 2mm thicker than standard specifications, and all units employ a dual-flange structure to prevent wire rope groove damage. Each assembled hoist undergoes lubrication and airtightness testing before shipment to ensure no oil leakage occurs. The workshop houses a 100-ton electric hoist test bench, where each unit undergoes 1.1 times dynamic load and 1.25 times static load testing. The paint baking production line enhances paint durability while significantly improving product aesthetics.
The establishment of the electric hoist assembly line has enabled us to move beyond primitive work methods and adopt continuous production. This approach enhances production efficiency, shortens delivery times, reduces labor intensity for workers, and improves product quality.
MONOSPAR LEAN PRODUCTION LINE
The planning and construction of Dafang Heavy Machinery's single-girder production line commenced in April 2014 under the company's lean manufacturing initiative. This project was a key construction endeavor for Dafang in 2014.
The single-girder production workshop spans an area of 32,000 square meters. It currently comprises four lean production lines, achieving a daily output of 70-90 single girders and a monthly production capacity of approximately 2,500 units. The assembly line achieves continuous operation from raw material cutting to finished product formation, encompassing uncoiling and leveling, shearing, feeding, rolling forming, overall extrusion, rib plate assembly, automatic welding, and final product completion. All material transfer utilizes roller conveyors, enhancing production efficiency and safety while reducing costs. Rigorous processes and skilled operators significantly elevate product quality. In today's era of tight deadlines for customized production, our strict adherence to order delivery schedules while ensuring product quality has enhanced our company's reputation and credibility among customers.
This production line incorporates equipment including roller machines, leveling machines, 22.5m channel forming machines, 22.5m channel assembly machines, flipping fixtures, and dual-gun gantry welding systems. The commissioning of this single-girder production line marks a significant stride toward automation and lean management in our company's single-girder crane manufacturing.
TWIN BEAMS LEAN PRODUCTION LINE
The double-girder assembly line was planned and constructed in June 2014 under the company's lean production framework. The workshop covers an area of 32,000 square meters and employs a U-shaped assembly line layout. The production line incorporates equipment such as leveling machines, shot blasting machines, plasma cutters, assembly machines, dual-gun gantry welding machines, and other equipment. It integrates material cutting, leveling, and assembly processes, enabling shot blasting, painting, and drying treatments for double-girder equipment plates. This achieves the required surface roughness while eliminating workpiece stresses and surface scale, thereby enhancing product longevity and paint coating quality.
The implementation of the double-girder production line has significantly boosted manufacturing efficiency, drastically shortened production cycles, met customer order timelines, and elevated the company's core competitiveness.
ELECTRICAL ASSEMBLY LINE
The electrical assembly line operates under dust-free conditions and implements the “7S” fixed-position management standard. Key equipment includes adjustable torque wrenches, fully automatic computerized wire strippers, ultra-quiet terminal crimping machines, automatic labeling machines, and electrical operation test benches. Electrical cabinets undergo streamlined processing from wire stripping and connection to installation and testing. The introduction of automated equipment has significantly enhanced work efficiency and wiring quality. With the implementation of electrical operation test benches, every finished cabinet undergoes pre-shipment power-on testing to ensure wiring quality and facilitate on-site installation.
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Hotline: +86-373-2157000
Fax: +86-373-2157000
E-mail: henandafang@126. com
