Cases

Home > Cases > Dongguan Qiaosen Machinery Co., Ltd. Latest company case about Intelligent Oil Fume & Dust Purification Renovation Case: ESG Compliance Upgrade & Surface Quality Optimization

EVENTS

news

Cases

titi@qiaosenmachinery.com

86-0769-26626853

Contact Now

Intelligent Oil Fume & Dust Purification Renovation Case: ESG Compliance Upgrade & Surface Quality Optimization

2026-09-16

Intelligent Oil Fume & Dust Purification Renovation Case: ESG Compliance Upgrade & Surface Quality Optimization for Automotive Stamping Workshop

Case Implementation Cycle: January 2026 – September 2026 (9-month full-cycle mass production verification & ESG audit confirmation)

Enterprise Background: The case enterprise is a Tier 1 automotive stamping supplier, mainly producing body structural parts and chassis stamping components, with 8 automatic stamping lines. Before renovation, the workshop adopted traditional exhaust fan ventilation, with serious floating oil fume and metal dust. The workshop air quality failed to meet ESG audit standards, and dust adhesion caused frequent part surface defects. The enterprise faced the risk of supplier assessment downgrade. In January 2026, the company launched a full-line intelligent purification system renovation, realizing source capture, multi-stage purification and intelligent energy-saving operation. After 9 months of stable operation, all environmental indicators reached industry benchmark standards, and quality and energy-saving benefits were fully verified.

Real Baseline Data Before Renovation (January 2026 Official Workshop Monitoring Data)

Workshop oil fume concentration: 3.80 mg/m³
Fine metal dust concentration: 2.10 mg/m³
Dust adhesion induced surface defect rate: 1.35%
Workshop temperature & humidity fluctuation: ±12% RH, ±6℃
ESG environmental audit compliance rate: 72.3%
Employee occupational health inspection abnormality rate: 3.12%
Relative workshop ventilation energy consumption: 100% baseline
Monthly quality loss caused by environmental pollution: USD 3,980

Core Standardized Renovation Implementation Measures

1. Install fully enclosed pollution source capture covers for all 8 stamping lines, realize full coverage of oil fume and dust collection at stamping processing stations.

2. Deploy multi-stage composite purification equipment, configure inertial separation, dust filtration and oil mist purification modules to realize full pollutant removal.

3. Install intelligent frequency conversion control system, link with stamping equipment operation signal, automatically adjust air volume and purification power according to production status.

4. Arrange pipeline optimization and air balance debugging to avoid air flow dead corners, ensure uniform purification effect in the whole workshop.

5. Build real-time environmental monitoring platform, record air quality data continuously, form standardized ESG audit data reports.

6. Formulate equipment regular maintenance and filter replacement SOP to ensure long-term stable purification efficiency and avoid performance attenuation.

9-Month Real Operation Data Comprehensive Comparison Table

Core Environmental, Quality & Operational Indicators	Before ESG Purification Renovation	After 9-Month Stable Operation	Quantified Comprehensive Improvement
Workshop oil fume concentration	3.80 mg/m³	0.42 mg/m³	-88.9%
Fine metal dust concentration	2.10 mg/m³	0.25 mg/m³	-88.1%
Dust adhesion surface defect rate	1.35%	0.18%	-86.7%
Temperature & humidity fluctuation range	±12% RH, ±6℃	±4% RH, ±2℃	Stable production environment
ESG environmental audit compliance rate	72.3%	100%	Full compliance
Employee health inspection abnormality rate	3.12%	0.28%	-91.0%
Workshop ventilation & purification energy consumption	100%	82.6%	-17.4%
Monthly environmental-related quality loss	USD 3,980	USD 560	Monthly saving USD 3,420

In-Depth Case Full Q&A (Project Actual Verification & Data Analysis)

Q1: Why is the intelligent purification system more energy-saving than traditional fixed exhaust fans?

A1: Traditional exhaust fans run at full speed 24 hours a day regardless of production status, resulting in a large amount of invalid energy consumption. The renovated system adopts intelligent linkage control, which can sense the operating state of stamping equipment. During mass production, it operates at high efficiency to ensure purification effect; during mold change, shutdown and standby, it automatically reduces air volume and power. At the same time, source fixed-point capture avoids the waste of large-area blind ventilation, which greatly reduces comprehensive energy consumption. The actual measured energy-saving rate of the workshop reaches 17.4%, realizing green production while ensuring environmental compliance.

Q2: How does environmental renovation help the enterprise pass the OEM ESG audit successfully?

A2: Before the renovation, the lack of professional purification equipment and continuous environmental monitoring data was the core audit deduction point. After the transformation, the enterprise has complete purification hardware facilities, real-time air quality monitoring data records, and standardized equipment maintenance SOP. All pollutant emission indicators meet national standards and OEM green factory requirements. In the subsequent annual supplier ESG audit, the project was rated as a benchmark green improvement project, eliminating the order restriction risk and improving the enterprise's supplier level rating.

Q3: Calculate the ROI and payback period of this environmental ESG renovation project.

A3: Total project one-time investment is USD 18,900, including purification equipment, intelligent control system, pipeline layout, installation and commissioning fee. Direct monthly economic benefit: quality loss saving of USD 3,420 + monthly energy saving benefit of USD 580, with total monthly benefit of USD 4,000 and annual comprehensive benefit of USD 48,000. The simple payback period is 4.7 months. Implicit benefits such as ESG audit qualification, stable supplier status and improved employee health are not included in the calculation scope.

Q4: What unexpected quality benefits does the stable workshop environment bring?

A4: In addition to reducing dust adhesion defects, constant temperature and humidity environment effectively inhibits mold surface oxidation and rust, reduces mold maintenance frequency caused by environmental factors. Stable air environment also avoids the influence of air flow disorder on stamping feeding stability, indirectly reduces positioning deviation defects. The batch consistency of stamped parts and coating finished products is significantly improved, and the customer's incoming inspection pass rate is increased by 3.2 percentage points.

Q5: What long-term maintenance mechanisms ensure the continuous effectiveness of purification equipment?

A5: The enterprise established a three-level maintenance system. First, daily inspection by on-site operators: check equipment operation status and alarm information. Second, weekly professional maintenance: clean dust filter screen and oil mist filter element to ensure unobstructed air duct. Third, monthly data calibration: calibrate air quality monitoring sensors to ensure accurate and effective monitoring data. Regular maintenance avoids the attenuation of purification efficiency, ensuring long-term stable compliance of workshop environmental indicators.

Case Comprehensive Conclusion & Industry Outlook

This full-cycle mass production verification proves that stamping workshop oil fume and dust intelligent purification renovation is a high-return mandatory lean and green transformation project for modern stamping enterprises. It thoroughly solves the environmental pollution and quality hidden dangers caused by traditional ventilation modes, realizes full ESG compliance, reduces quality loss and energy consumption, and optimizes the factory's occupational health environment. With the continuous upgrading of green manufacturing standards in the automotive and new energy industries, environmental intelligent purification and digital environmental monitoring will become the standard configuration of high-end benchmark stamping workshops, and an important core competitiveness for enterprises to maintain supplier qualifications and expand high-end orders.

Send your inquiry directly to us