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Railway Bogie Axle Box of Russian railroad bogie Journal Box

Accurate naming is essential for technical documentation, commercial invoicing, and customs clearance. The following terms are recommended:

A qualified technical specification or data sheet for railway components typically consists of the following five core sections:

Intended Use: Specify which type of bogie this axle box housing is designed for (e.g., the standard 1520mm gauge Model 18-100 bogie commonly used in Russia, or its upgraded variants).
Operating Conditions: State the applicable environmental temperature range, particularly highlighting the extreme cold resistance required for Russian winter operations (e.g., -60°C to +50°C).

Railway axle boxes require exceptionally high impact toughness at low temperatures.

Material Grade: Cross-reference the material grade with relevant standards, such as Chinese standards (e.g., ZG230-450 or ZG25MnV), Russian standards (e.g., 20Л or 20ГЛ under ГОСТ 977-88), or equivalent international standards.
Heat Treatment: Specify the heat treatment state—typically Normalizing or Normalizing + Tempering—to eliminate casting stresses.
Core Performance Metrics:
- Tensile Strength ( $\sigma_b$ )
- Yield Strength ( $\sigma_s$ )
- Low-Temperature Impact Toughness: Explicitly state the Akv/Aku value at $-60^\circ\text{C}$, as this is a strict mandatory requirement under Russian GOST standards.

This section must be written in alignment with your engineering blueprints:

Critical Machined Surfaces:
- Bearing Bore: The inner cylindrical surface that holds the bearing. Specify the dimensional tolerance (usually in microns, $\mu\text{m}$ ), cylindricity, and surface roughness (e.g., $Ra\ 1.6$ or $Ra\ 0.8$ ).
- Flange Face (Mounting Surface): The top machined face with 4 bolt holes. Specify the required flatness and perpendicularity.
- Pedestal Guides (Slide Ways): The side guiding slots that make contact with the bogie side frame. Ensure strict dimensional control and wear resistance.
Non-Destructive Testing (NDT) Requirements: Define the acceptance standards for Magnetic Particle Inspection (MPI) or Ultrasonic Testing (UT) to ensure the casting is free of internal defects like porosity, cracks, or slag inclusions.

List the international, national, or regional standards that the manufacturing and QA processes adhere to:

Russian / CIS Standards: ГОСТ 32400 (Axle boxes for railway freight cars. General technical conditions) or related specific norms.
Chinese Standards: TB/T 2943 (Technical specifications for cast steel parts of railway locomotives and vehicles).
International Standards: EN 13749 (Bogies - Methods for specifying structural requirements) / EN 15663.

Surface Treatment: Apply high-grade anti-rust oil to all precision-machined surfaces. Apply a protective primer coat (typically gray or black paint) to non-machined cast surfaces.
Moisture-Proof Packaging: Seal the product in heavy-duty plastic bags with desiccants (silica gel), and secure it in fumigation-free wooden cases.
Product Marking: Cast or stamped identifiers. This must include: Manufacturer code, year of production, material grade, melt/heat number, and individual serial number to ensure 100% full traceability.

EAC Certification (CU-TR 001/2011): Railway components sold to Russia and the Eurasian Economic Union (EAEU) generally must comply with ТР ТС 001/2011 (Technical Regulation on the safety of railway rolling stock). It is highly recommended to reserve a section in your technical data sheet indicating certification compliance.
Drawing Number Synchronization: Always ensure that the cover page of your technical document clearly matches the exact Drawing Number and its latest Revision Level.