Project Background
An Indian well-known steel pipe manufacturer, primarily engaged in the cutting and forming of steel pipes, uses water-based cutting fluid (concentration 10%, pH 7) for cooling and lubrication in its production lines. The circulation system requires the filtration of impurities such as mill scale and iron oxide (particle size ≥20μm, density higher than water).
The original process relied on manual filter cleaning, which presented three major challenges:
-
Poor Filtration Effect: Residual impurities caused tool wear and pipe scratching, affecting the product pass rate.
-
Frequent Shutdowns for Cleaning: Unable to support 24-hour continuous production, leading to low efficiency.
-
Blocked Pipelines: Resulted in high maintenance costs and frequent replacement of the cutting fluid.
Project Requirements
-
Flow Rate: 50 m³/h
-
Filtration Precision: 20 μm
-
Media Compatibility: Resistant to oil-water mixture corrosion, pH 7
-
Operation Mode: Online automatic cleaning, no manual intervention required
-
Impurity Control: Effectively intercept mill scale and iron oxide with density higher than water
Solution
A customized self-cleaning strainer was provided, with the following core configurations:
-
Material & Precision: 304 stainless steel housing and filter element, corrosion-resistant and wear-resistant; filtration precision set at 20 μm, specifically designed to intercept mill scale and iron oxide.
-
Element Structure: Wedge wire screen with uniform gaps, preventing impurity adhesion.
-
Intelligent Cleaning: PLC controlled, supporting differential pressure/time dual-mode triggering. Online cleaning without shutdown or flow interruption, each cleaning cycle takes only tens of seconds.
-
Drainage Design: Large-diameter bottom drain port for rapid discharge of high-density impurities.
-
Installation Adaptability: Compact structure, directly integrated into the existing pipeline without production line modification.
Operational Results
-
Filtration Efficiency Improved: Impurity removal rate ≥99%, product pass rate increased by approximately 8%.
-
Production Efficiency Increased: Enabled 7×24 hours continuous operation, overall efficiency improved by 15%.
-
Maintenance Costs Reduced: Saved approximately 20 man-hours per month on cleaning; equipment maintenance frequency decreased by 60%.
-
Cutting Fluid Life Extended: Replacement cycle prolonged by 3 times, significantly reducing consumable procurement costs.
-
Stable Operation: No failures since commissioning, fully adapted to harsh working conditions.
Customer Feedback
The Indian client highly praise the equipment’s performance, stating it precisely solved the core pain points in cutting fluid filtration, achieving automation upgrades and comprehensive cost reduction. They expressed intent to adopt the equipment for new production lines and recommend it to peers.
Case Summary
This project represents a successful application of the self-cleaning strainer in the metal processing industry. By addressing requirements for high precision, continuous operation, and specific impurity filtration through customized design and intelligent control, the solution achieved the goals of “cost reduction, efficiency enhancement, and quality improvement.” We will continue to optimize our products to serve more industrial filtration scenarios globally.
Post time: Mar-02-2026