Zongshen Power

English Translation

In the engine manufacturing sector, surface treatment processes directly determine the wear resistance, corrosion resistance and assembly precision of core components, serving as a critical factor affecting product service life and market competitiveness. When Kaida, a specialist in variable-frequency energy-saving steam technology, partners with a leading engine manufacturer adhering to the philosophy of “Precision Intelligent Manufacturing”, a surface treatment technology revolution centered on “high efficiency, environmental friendliness and precision” unfolds, setting a new benchmark for win-win strategic collaboration in the industry.

Cooperation Background: Cross-industry Collaboration Driven by Technology Upgrade Needs

As a benchmark domestic engine manufacturer, the enterprise boasts a professional R&D team of over 200 staff. Its products cover all core segments of thermal power systems. Key components such as clutch steel plates and cylinder blocks achieve precision control within ±0.02 mm, and the pass rate of general machinery products exceeds 99%. Driven by the new-energy transition and high-end development strategy, the enterprise has raised higher requirements for engine surface treatment: the components for large-displacement vehicles must withstand operating temperatures above 300°C; meanwhile, the processes need to comply with low-carbon emission reduction environmental policies. In addition, it is necessary to resolve pain points in traditional processes including excessive energy consumption, insufficient temperature control accuracy and chemical residues.

With more than a decade of expertise in steam heat source technology, Kaida has delivered customized solutions to over 10,000 customers across more than 120 industries, leveraging its core modular variable-frequency energy-saving technology, 99% steam dryness and mature after-sales service system. Its product features including inspection exemption, low-nitrogen emission and instant-on operation perfectly match the intelligent manufacturing upgrade demands of engine surface treatment. Both parties officially launched the cooperation in 2025, focusing on optimizing and upgrading surface treatment processes for core engine components.

Core Challenges: Surface Treatment Pain Points in Precision Manufacturing

1. Precision control difficulties: For precision parts such as engine cylinder block water passages and crankshaft journals, stringent requirements are imposed on surface roughness and flatness. Temperature fluctuations in conventional treatment processes easily cause uneven coating thickness, compromising the air tightness of assembly and the fitting accuracy of moving parts.
2. Environmental protection and energy consumption pressure: Traditional chemical treatment processes carry risks of corrosion from residual chemicals. High-pressure water cleaning may damage precision structures, while nitrogen oxide emissions and energy consumption fail to meet updated environmental standards.
3. Production efficiency bottlenecks: Intelligent production lines require continuous and stable heat supply. Conventional steam equipment features long preheating time and poor on-demand energy supply capability, limiting the improvement of overall production tact time.
4. Multi-scenario adaptability requirements: Surface treatment requirements vary greatly across different components, ranging from weld slag removal on cylinder block welds and grease removal from crankshafts to precision cleaning of fuel injectors, calling for customized solutions.

Customized Solution: Steam Technology Empowers Full-process Upgrade

To address the core requirements of the engine manufacturer, Kaida set up a dedicated technical team and developed an Intelligent Steam Treatment System tailored to its engine production workflow, integrating four core technological strengths:

1. Precision temperature control via variable frequency to underpin quality Adopting DC segmented variable-frequency technology, the system achieves precise steam temperature control within ±1℃. Custom temperature profiles are developed for key processes such as cylinder block coating curing and heat treatment of clutch steel plates. Equipped with a 12-patent steam-water separator, steam moisture content is kept below 1%. This delivers a 30% improvement in coating adhesion on cylinder block surfaces, and ensures the surface finish of crankshaft journals meets requirements for precision fitting.
2. High-efficiency energy-saving system to cut overall costs The system reaches a thermal efficiency of up to 98.6%. Waste heat recovery technology reduces flue gas temperature to 60℃, achieving an overall energy saving of over 40% compared with conventional equipment. With a total water volume less than 30 liters, the unit is exempt from installation filing and annual inspection, eliminating the labor cost for professional boiler operators and aligning with the enterprise’s intelligent cost-reduction goals.
3. Green low-nitrogen emission to meet environmental standards A water-cooled low-NOₓ combustion system is adopted, with NOₓ emissions below 30 mg/m³, far exceeding national environmental standards. It completely eliminates pollution risks from traditional chemical treatments. The full steam cleaning process requires no chemical agents; high-temperature steam at 160–180℃ penetrates and strips grease and weld slag, avoiding residual corrosion and securing long-term stability of engine components.
4. Intelligent scenario adaptation to boost production efficiency Custom cleaning schemes are developed for different parts: slender flexible nozzles clear debris inside cylinder block water passages; low-temperature and low-pressure mode protects the precision structure of crankshaft journals; fan-shaped nozzles enable large-area high-efficiency treatment on cylinder head surfaces. The system is fitted with remote monitoring and intelligent parameter adjustment functions. Multiple sets of process parameters can be stored and recalled with one click when switching workpieces, cutting setup time by 60%, and supporting stable 24-hour continuous operation.
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The cooperation between Kaida and the leading engine manufacturer not only creates mutual benefits for both enterprises, but also builds a new cross-industry collaborative model of “core component manufacturing + special equipment supply”. Its innovative practice proves that the application of steam energy-saving technology in engine surface treatment can simultaneously resolve three major industry pain points in precision, environmental protection and efficiency, offering a replicable solution for the green transformation of the equipment manufacturing industry.

In the future, both sides will further deepen their cooperation, focusing on R&D of surface treatment technologies for new products such as fuel cell components and new-energy vehicle motor housings. They will continue to advance the intelligent and refined upgrading of steam energy application, and jointly write the benchmark story of surface intelligent manufacturing.