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5S Standardized Rectification and Zero-Waste Transformation for Precision Hardware Stamping Workshop

2026-08-13

Lean On-site Upgrade Real Case: 5S Standardized Rectification and Zero-Waste Transformation for Precision Hardware Stamping Workshop

Case Cycle: September 2025 – August 2026

Enterprise Background:

The case enterprise is a precision electronic hardware stamping manufacturer in Jiangsu, mainly producing 3C structural parts and precision shrapnel parts. The workshop has 22 precision high-speed punch presses, with more than 150 sets of active molds. Before transformation, the workshop had disorderly material stacking, unmarked mold storage, random placement of inspection tools and oil products, serious searching waste, occasional mixed material quality problems and low team overall efficiency. The enterprise launched full-station 5S lean on-site transformation in September 2025 and completed 12 months of stable landing verification.

Pre-Transformation Baseline Real Data (September 2025)

Average daily material and mold searching waste time: 136 minutes
Workshop on-site auxiliary man-hour waste rate: 14.8%
On-site management-related defective rate: 7.25%
Annual mold stacking collision damage quantity: 12 sets
Monthly customer complaint caused by messy management: 2.1 times

Core 5S Lean Implementation Measures

Complete workshop regional division, mark fixed production area, mold storage area, material temporary storage area, waste area and tool hanging area.
Implement full visual management: ground line marking, shelf classification labeling, mold coding identification, material batch color labeling.
Unified tool hanging standard and oil material placement standard, eliminate random placement and blind searching.
Sort out obsolete materials, idle old molds and redundant auxiliary tools to release workshop effective space.
Establish daily 5S inspection, weekly rectification and monthly evaluation mechanism to form long-term sustainable management.
Standardize post-mold-change cleaning, post-shutdown site sorting and daily equipment wiping standards.

Real Before-After 12-Month Operation Data Comparison

Core Management & Efficiency Indicators	Before 5S Transformation	After 5S Lean Upgrade	Actual Comprehensive Benefit
Daily on-site searching waste time	136 min	29 min	-78.7% time saving
Workshop auxiliary man-hour waste rate	14.8%	3.1%	-79.0% labor waste reduction
On-site-induced defective product rate	7.25%	1.63%	-77.5% quality loss reduction
Annual mold collision damage quantity	12 sets	2 sets	-83.3% mold loss
Monthly management-related customer complaints	2.1 times	0.3 times	-85.7% complaint reduction
Workshop overall effective productivity	100%	117.9%	+17.9% output improvement

Case Professional Q&A

Q1: Why can 5S significantly reduce defective products without equipment investment?

A: Most low-level quality problems in stamping workshops come from human confusion and on-site chaos, including mixed materials, unclean mold surface, foreign matter entering the mold, and unqualified lubrication environment. Standardized 5S site eliminates environmental interference, ensures clean production conditions and standardized material use, and fundamentally reduces human-induced quality risks.

Q2: What is the biggest difficulty in the 5S implementation process of this factory?

A: Worker’s long-term habitual irregular operation. In the early stage, many employees resisted standardized placement and fixed-point management. The factory solved the problem through simplified standards, hierarchical training, on-site demonstration and performance assessment linkage, and finally formed automatic workplace habits.

Q3: What is the actual return on investment of this 5S lean project?

A: The whole transformation has almost no hardware investment, only standardized management and labor sorting. Annual savings from reduced mold damage, quality scrap and man-hour waste reach USD 46,800. It is a typical zero-cost, high-return lean management project.

Case Conclusion

This 12-month real factory practice fully proves that 5S on-site lean management is the basic guarantee for high-efficiency and high-quality operation of stamping workshops. Standardized site, visual identification and sustainable management mechanism eliminate long-term invisible waste in traditional workshops, stabilize product quality, improve production efficiency, and greatly enhance enterprise customer audit pass rate and market competitiveness.

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