Since 2024, Honrock has been supplying high-performance hinged door locks model HK9322 to Romanian National Railway Passenger Company (CFR Călători) through direct and indirect cooperation channels. These locks are applied in the new passenger car door upgrade project for its core lines, contributing to enhanced service quality and reliability on Eastern European mainline railways.

I. Project Background

• Line Importance: The Romaniannational railway network serves as the backbone for domestic long-distancetransportation, connecting major cities and economic centers. It carriessignificant daily commuter and intercity passenger traffic. CFR Călători operates linescovering the entire country, handling dense passenger volumes.

• Vehicle Upgrade Needs: CFR Călători initiated thenew passenger car door upgrade program to enhance the durability andsafety of critical components. The target vehicles operate in Romania'stypical continental climate, requiring components to withstand winterfreezing temperatures, summer heat, significant temperature variations,and rain/snow conditions.

• Stringent Standards: Designand manufacturing strictly adhere to EU Railway Vehicle Standards (EN).The door locks are required to possess ultra-high mechanical strength,freeze/jam resistance, and operational reliability under extremetemperatures (-30°C to +50°C), freeze-thaw cycles, rain/snow erosion, andfrequent use conditions.

II. Pain Point Analysis & Solutions

1. Risk of Lock Failure Due to Extreme Temperatures & Freezing
   ✅ PainPoints:
   * Winter low temperatures cause lubricant solidification and metalcomponent contraction, increasing the risk of sluggish bolt action orcomplete freeze-lock.
   * Rain/snow ingress followed by repeated freeze-thaw cycles acceleratespart corrosion and structural damage.
   * Frequent temperature changes challenge material stability, potentiallyleading to deformation or cracking.
   ✅ Solutions:
   * Designed for Cold Regions:
   ▶ Core lockcomponents utilize special low-temperature resistant alloy steel, ensuringtoughness at -40°C.
   ▶ Applicationof aerospace-grade, wide-temperature range long-life lubricant guaranteesfluidity at low temperatures and stability at high temperatures.
   ▶ Reinforcedsealing structure effectively blocks rain, snow, and dust from enteringthe lock core and transmission mechanism.
   ▶ Enhancedsurface treatment improves corrosion resistance against de-icing agents.

2. Durability and Safety Requirements Under High-Frequency Use
   ✅ PainPoints:
   * Passenger doors undergo high-frequency daily opening/closing, demandingexceptional mechanical fatigue strength from the lock.
   * Reliable locking and smooth unlocking must be guaranteed under allcircumstances, including emergencies.
   ✅ Solutions:
   * Robust Durability & Safety Assurance:
   ▶ Reinforcedbolt and transmission structure with optimized stress design to withstandrepeated impacts.
   ▶ Precisionmanufacturing ensures high engagement accuracy, providing excellentanti-theft and anti-prying performance.
   ▶Incorporates EN-standard compliant emergency unlocking function, featuringintuitive and reliable operation.

III. Product Delivery Overview
A total of HK9322 hinged door lock systems were delivered for this project, primarily applied in:

• Main passage hinged doors on new passenger cars.
  The products successfully passed CFR Călători's stringentspecified environmental simulation tests (including low-temperaturefreezing, freeze-thaw cycles, salt spray testing) and high-intensitylifecycle testing, fully complying with relevant EU EN technical standardsand operational requirements.

IV. Project Highlights & Collaboration Value

• Precision Customization: Providedan optimized HK9322 Cold Region Edition solution tailored to EasternEuropean/Balkan climate characteristics and EU standards.

• Efficient Response: Rapidlycompleted technical solution confirmation, sample adaptation, and testvalidation.

• Standards Compliance: Productdesign, materials, and testing fully met EN standards throughout theprocess, laying the foundation for market entry into the EU.

V. Conclusion
Honrock's successful participation in the Romanian National Railway Passenger upgrade project with the HK9322 Hinged Door Lock System fully demonstrates its comprehensive technical capabilities in adapting to harsh climatic environments (especially extreme cold), meeting high-level EU standards (EN), and providing targeted solutions. This collaboration marks a significant step for Honrock in deepening its presence in the European rail transit market. Moving forward, Honrock will continue to provide highly reliable products, offering a solid foundational guarantee for all-weather, high-safety, fault-free operation of European rail vehicles.