Junhe Coating Solutions: Empowering Manufacturing Upgrade with Digital-Intelligent Technology

In the wave of manufacturing transformation towards intelligence and greenization, the coating process has evolved from a traditional auxiliary procedure to a core link that determines product quality, production efficiency and compliance capabilities. With years of in-depth experience in the coating field, Junhe has built full-scenario and customized coating solutions, including Dip-Spin Coating and spraying, covering core applications such as fasteners, wind power bolts, brake discs, hub bearings and fuel injectors. With digital, efficient and green technological strength, Junhe provides customers in various industries with full-chain value support from equipment to process, and from production to management, helping enterprises achieve manufacturing upgrading and high-quality development.

To meet the core needs of "high precision, high stability and high productivity" for fastener coating, Junhe has built a digital-intelligent Dip-Spin coating production line, realizing full-process digital collaboration from incoming materials to packaging, completely getting rid of the pain points of traditional coating modes, and adapting to the fastener processing needs of various industries such as automotive, wind power, photovoltaic and high-speed rail.

The automatic multi-station linkage design realizes continuous and rhythmic operation, reduces manual intervention and handling losses, lowers personnel dependence, ensures the consistency of process rhythm, and supports unified scheduling and rapid expansion of multiple production lines. The whole process integrates MES system and process control module, and the key parameters of each basket of products can be set, monitored and traced, transforming quality management from post-intervention to process guarantee, and easily meeting the needs of internal control improvement and external audit compliance. The Dip-Spin system accurately controls the coating adhesion and film thickness uniformity, greatly reducing quality defects such as uneven thickness, liquid accumulation and sagging, with a coating qualification rate of over 99.7%, effectively reducing scrap rate and rework costs. Equipped with high-efficiency hot air circulation drying oven and energy recovery structure, it achieves energy saving and consumption reduction, and the modular compact layout improves plant efficiency, saving land and operation costs for enterprises. In addition, the system supports the processing of fasteners of various sizes and coating requirements, with quick parameter program switching to adapt to flexible production needs, and is equipped with a closed waste gas collection system with a VOC collection efficiency of > 98%, fully complying with environmental protection regulations.

It is matched with Junhe's independently developed JUNHE®9720 water-based chromium-free zinc-based coating, which contains no heavy metal ions, meets RoHS standards, has excellent salt spray resistance and strong adhesion, and becomes a high-quality alternative to imported coatings, further enhancing coating quality and environmental protection advantages, and providing long-term anti-corrosion protection for fasteners.

As the core connecting component of wind power equipment, wind power bolts are long-term exposed to extreme and complex working conditions such as high altitude, strong wind, high humidity and salt spray, which put extremely high requirements on the corrosion resistance, wear resistance and uniformity of coating. Junhe has specially created a wind power bolt spraying solution, which installs an "anti-corrosion armor" for wind power safety with professional processes and intelligent equipment.

The solution adopts automatic robotic electrostatic spray gun, with a spraying uniformity of over 99% and precise control of film thickness, completely eliminating the omissions and differences of manual spraying, and ensuring the consistent coating quality of each bolt. Relying on mature Dacromet coating process and special coating, combined with special sintering equipment such as step-by-step box-type double-layer furnace, it realizes the perfect connection between coating and sintering, greatly improving the salt spray resistance and anti-aging performance of the coating, effectively resisting extreme environmental erosion, extending the service life of wind power bolts and reducing equipment operation and maintenance costs. The whole process realizes batch traceability and precise control, eliminating the risk of material mixing, and at the same time adapts to the multi-specification and large-batch production needs of wind power bolts, balancing production capacity and quality, helping wind power enterprises achieve efficient, safe and stable production and operation, and providing reliable support for the development of the new energy industry.

The coating quality of automobile core components directly determines the safety, reliability and service life of vehicles. According to the structural characteristics and service conditions of key components such as brake discs, hub bearings and fuel injectors, Junhe has built customized spraying solutions to accurately match the coating needs of each component, helping the auto parts industry improve quality and efficiency.

Aiming at the service characteristics of brake discs such as high temperature, high friction and easy corrosion, Junhe adopts a multi-station robotic spraying mode, combined with intelligent algorithms to accurately control the heating and cooling process, realizing full-process automatic connection of workpiece roller feeding, ground chain conveying, spraying and drying, with synchronous data transmission and full-process controllability. The solution can effectively improve spraying speed and precision, ensure uniform coating and strong adhesion on the brake disc surface, with excellent high temperature resistance, wear resistance and corrosion resistance, eliminate problems such as coating peeling and rust during braking, and ensure the safe and stable operation of the braking system. It has successfully provided customized services for overseas customers such as Germany and won high recognition from the industry.

As a key rotating component in automobile driving, hub bearings need to bear high-frequency vibration, impact and complex environmental erosion, which have strict requirements on the sealing, wear resistance and corrosion resistance of the coating. Junhe's solution adopts precise spraying process, combined with special anti-corrosion coating, which can uniformly coat the tiny parts of hub bearings, forming a dense protective barrier, effectively resisting the erosion of dust and water vapor, reducing component wear and extending service life. The automatic production mode reduces manual operation errors, improves production efficiency, and realizes production data traceability, helping enterprises improve quality management level and adapt to the large-scale and standardized production needs of auto parts.

As the core component of engine fuel supply, fuel injectors have precise structure and complex working conditions, which have extremely high requirements on coating precision, sealing and oil resistance. Relying on refined spraying technology and special coating materials, Junhe realizes precise coating for the precise structure of fuel injectors, ensuring uniform coating and controllable thickness without affecting the precise performance of fuel injectors. The coating has excellent oil resistance, high temperature resistance and adhesion, which can effectively prevent fuel corrosion and high-temperature aging, improve the working stability and service life of fuel injectors, and help the engine achieve efficient, energy-saving and low-emission operation.

Junhe has always adhered to the concept of "continuous innovation", deeply integrating technological R&D with customer needs. All solutions are centered on "efficiency, stability, environmental protection and intelligence". It not only provides high-quality coating equipment and processes (including both Dip-Spin Coating and spraying), but also is committed to building an upgradeable and growing system platform for customers, realizing data interconnection with customers' existing ERP, MES and WMS systems, breaking information islands and promoting the implementation of "transparent manufacturing".

From fasteners to wind power bolts, from automobile brake discs to fuel injectors, Junhe covers core applications in various industries with comprehensive coating solutions. With more than 20 years of R&D accumulation and market practice, it helps customers reduce operation costs, improve product quality and enhance market competitiveness. Choosing Junhe is not only purchasing a set of coating system, but also choosing a partner for joint progress in manufacturing upgrading, to jointly explore the new possibilities of coating in the Industry 4.0 era.