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Heavy-Duty Component Cleaning and Inspection Solutions for Marine, Engine & Machinery Manufacturing

Industry Challenges

Heavy-duty industrial equipment manufacturing — including marine engine blocks, generator blocks, large crankshafts, and large machine tool castings — involves components that can weigh tens of tons and measure several meters in length. Residual cutting oil, casting sand, and metal chips trapped in deep oil galleries and complex internal cavities are difficult to remove with standard cleaning equipment, while large-scale castings with complex machined surfaces make manual defect inspection slow, inconsistent, and prone to missed defects.

Manufacturers need heavy-duty cleaning systems capable of handling massive components with full orientation flexibility, along with vision inspection systems that can reliably cover large, complex machined surfaces.

Solution Overview

Our heavy-duty industrial equipment solutions combine large-capacity cleaning systems with vision inspection technologies built for oversized, complex components.

Cleaning Solutions: Our heavy-duty cleaning systems handle components up to 30 tons and 4 meters in length, using scanning spray cleaning, robotic high-pressure cleaning, and ± 360° tilting mechanisms to reach every internal cavity and oil gallery on large marine blocks, generator blocks, and crankshafts.

Vision Inspection Solutions: Our vision inspection systems verify machined surface quality on large-scale castings such as machine tool bodies. Using five-side inspection coverage, our systems detect casting and machining defects across complex geometries with high accuracy, reducing the risk of undetected defects affecting equipment stability and service life.

Supported Components Our heavy-duty industrial equipment solutions cover a wide range of large-scale components:

Core Applications:

Marine components: crankshafts, generator blocks, engine blocks, main bearing caps
Heavy-duty engine blocks: diesel engine blocks (V12/V16)
Large structural components: large housings, machine tool bodies (WH machine body)

Our solutions also extend to other large-scale industrial equipment components. For a complete overview of our capabilities, please refer to our product and application portfolio.

Case Studies

Case Study 1: Ultra-Large Crankshaft Cleaning System for Marine Engines

We designed and delivered an ultra-large crankshaft cleaning system for marine crankshafts up to 4 meters in length, capable of handling loads up to 30 tons. The system ensures thorough oil hole and overall surface cleaning for some of the largest crankshaft components in industrial production.

Key Results:

Cycle time: 1,800–2,400 seconds per unit
Overall cleanliness: ≤ 90 mg
Oil hole cleanliness: ≤ 10 mg
Maximum load: 30 tons, length up to 4 m

The system has been in production since 2024, supporting reliable cleaning for the largest marine crankshaft components.

Case Study 2: Five-Side Machined Surface Defect Vision Inspection System for Machine Tool Bodies

We deployed a five-side machined surface defect vision inspection system for large-scale machine tool castings (WH machine body), addressing the challenge of complex machining surfaces where missed defects could affect equipment stability and service life.

Key Results:

Detection accuracy: ≥ 99.9%
Minimum detectable casting defect size: ≥ 0.5 mm
Minimum detectable machining defect length: ≥ 0.5 mm

The system provides comprehensive five-side surface coverage, ensuring reliable defect detection across large, complex castings.

Core Technologies

Cleaning Technologies	Inspection Technologies
Scanning spray + robotic high-pressure cleaning for marine crankshafts	Five-side machined surface defect vision inspection
Heavy-duty component cleaning systems with ± 360° tilting	High-precision casting defect detection (≥ 99.9% accuracy)
Ultra-large crankshaft cleaning (up to 30 tons, 4 m length)	Machining defect length detection for large castings
Robotic scanning spray cleaning for large housings	—

FAQ

Q: What is the largest component size your cleaning systems can handle?

A: Our heavy-duty cleaning systems handle components up to 30 tons in weight and up to 4 meters in length, such as marine generator blocks and ultra-large crankshafts.

Q: How do you clean complex internal cavities on large marine engine blocks?

A: We use ± 360° tilting cleaning mechanisms combined with scanning spray and robotic high-pressure cleaning to reach deep oil galleries and internal cavities that are difficult to access on large components.

Q: What cleanliness levels can be achieved for large marine crankshafts?

A: Depending on the component, our systems achieve overall cleanliness levels of ≤ 40 mg to ≤ 90 mg, with oil hole cleanliness as low as ≤ 10 mg.

Q: What defects can your vision inspection systems detect on large machine tool castings?

A: Our five-side inspection system detects casting defects and machining defects as small as ≥ 0.5 mm, with detection accuracy of ≥ 99.9%, covering complex machined surfaces from multiple angles.

Q: Can cleaning and integrated rust prevention be combined for crankshaft components?

A: Yes. Our integrated crankshaft solution combines cleaning with rust prevention in a single process, achieving overall cleanliness ≤ 3 mg with optional packaging integration.

Q: How long does it take to commission a custom heavy-duty cleaning or inspection system?

A: Timelines depend on system complexity, component size, and integration requirements. Our project management team supports you from planning through production handover for efficient commissioning.

Data Table

The table below provides a representative overview of our heavy-duty industrial equipment cleaning and inspection applications.

Heavy-Duty Industrial Equipment Cleaning and Inspection Applications and Performance Data

Machinery & Industrial Equipment
Application Solutions - Cleaning, Inspection and Industrial Chemistry

Cleaning Equipment Solutions

Component / Workpiece	Cleaning system / process	Year	Cycle Time (sec/piece)	Cleanliness	Particle Control	Key Technology
Diesel Engine Block (V12/V16)	Heavy-duty component cleaning system	2015/2018	1800 sec	—	—	Max load 1,000 kg
Marine Crankshaft	Scanning spray + robotic high-pressure cleaning	2017	1200 sec	Overall ≤ 40 mg	—	10 MPa robotic cleaning, max 1.2 tons
Marine Generator Block	Heavy-duty component cleaning system	2026	1800 sec	—	≤ 150 μm	Max load 30 tons, ± 360° tilting
Marine Block + Main Bearing Cap	Heavy-duty cleaner	2021	1800 sec	—	—	± 360° tilting
Marine Crankshaft (up to 4 m)	Ultra-large crankshaft cleaner	2024	1800-2400 sec	Overall ≤ 90 mg, Oil holes ≤ 10 mg	—	Max load 30 tons, length up to 4 m
Large Housing (up to 800 kg)	Robotic fixed-point cleaning	2015	≤ 1800 sec	≤ 20 mg/m³	—	Robotic scanning spray
Integrated Crankshaft	Cleaning + rust prevention combined	2020	66-78 sec	Overall ≤ 3 mg	≤ 300 μm	Integrated anti-rust + optional packaging

Vision Inspection Solutions

Component / Workpiece	Inspection Challenge	Inspection Solution	Project Year	Inspection Cycle Time	Inspection Performance	Key Technology
WH Machine Body	Large-scale machine tool castings have complex machining surfaces, and missing detection of defects will affect the stability and service life of the equipment.	Five-Side Machined Surface Defect Vision Inspection System	—	—	Accuracy: ≥ 99.9% / Missing Rate: — / False Rate: —	Casting defect: ≥ 0.5 mm, Machining defect length: ≥ 0.5 mm, Accuracy ≥ 99.9%

Recommended Cleaning Chemistry

Heavy Oil & Cutting Fluid Removal

Product Name	Model	State	pH Value (3%)	Main Product Features	Concentration%	Temperature℃	Cleaning Method
Special Cleaner for Robots	CP-900	Liquid	8.8	Certified by robot manufacturers; compatible with non-ferrous & ferrous metals, extends robot service life	2.0–4.0%	20–45℃	High-pressure, Spray, Dipping, etc.
Pre-Electron Beam Welding Cleaner	LE-2000	Liquid	8.60 (1.5%)	Exclusively for pre-electron beam welding cleaning; improves welding quality and reduces defect rate	1.0%–2.0%	50–80	Spray cleaning

Cast Iron Rust Protection

Product Name	Model	State	pH Value (3%)	Main Product Features	Concentration%	Temperature℃	Cleaning Method
Room Temperature Cleaner – Universal for Iron & Aluminum	CPAL-MULP23	Liquid	10.54	Room-temperature cleaning, compatible with iron and aluminum, offers in-process corrosion protection for up to 2 weeks	2.0%–5.0%	Ambient Temp	Spray / Ultrasonic
All-in-One Cleaning & Rust Inhibitor	CP-20LCAL	Liquid	9.86	Suitable for cleaning non-ferrous and ferrous metals	2.0%–4.0%	20–60	Spray cleaning, etc.
Water-Soluble Cleaning & Rust Inhibitor	CP-600T	Liquid	10.38	Rust-proof, applicable to cast iron cleaning with outstanding rust resistance	2.0%–4.0%	20–60	Spray cleaning, etc.

Aluminum/Magnesium Compatibility

Product Name	Model	State	pH Value (3%)	Main Product Features	Concentration%	Temperature℃	Cleaning Method
Room Temperature Cleaner – Special for Aluminum Parts	CPAL-ALLP11	Liquid	10.78	Non-foaming when cleaned above 27℃, enhances surface wettability to ≥40 dynes/cm, suitable for workpieces with cutting fluid or a small amount of oil stains	2.0%–5.0%	27℃	Spray / Ultrasonic
Special Cleaner for Aluminum Parts	CP-60B	Liquid	9.6	Dedicated cleaner for aluminum products, excellent material compatibility and discoloration-free to workpieces	2.0%–4.0%	20–60	Spray cleaning, etc.