기관차의 핵심 하중 지지 부품인 철도 차축 하우징

Introduction of Railway Axle Housing

The axle housing ( 액슬 박스) of the rail vehicle, as the core load-bearing component of the bogie system of the rail vehicle, its design and material selection are directly related to the safety, stability and service life of the train operation.

Material and Process Features of Modern Railway Axle Housing

The axle box is made with high-strength alloy cast steel (such as ZG25MnCrNiMo) and nodular cast iron (QT500-7), two kinds of base material, supplemented by differential heat treatment process to meet the demand of different working conditions. 그 중, cast steel structures are widely used in heavy-duty freight transportation and high-speed EMU fields due to their excellent impact toughness (impact energy at room temperature ≥35J) 인장강도 및 인장강도 (≥600MPa). During the casting process of the box body, resin sand precision forming technology is adopted, combined with 3D scanning reverse detection, to ensure that the dimensional accuracy of the complex inner cavity structure is controlled within ±0.3mm.

In view of the development trend of lightweight, new aluminum alloy axle box body (AlSi7Mg – T6) has gradually been pilot applied in urban rail vehicles. The aluminum alloy box formed by the vacuum die-casting process is 40% lighter than the traditional cast steel part. Combined with anodic oxidation surface treatment (film thickness 20-25μm), the corrosion resistance is improved by more than three times while maintaining a yield strength of 450MPa. It is worth noting that in an extremely low-temperature environment (-40℃), the material needs to pass the Charpy V-notch impact test to verify its low-temperature toughness.

 The Structural Design and Technical Characteristics of Railway Axle Housing

Topology optimization design was used to construct variable cross-section box structure, key bearing area wall thickness of 25 mm, and the stress section thinning to 12 mm to achieve maximum stiffness weight ratio. Finite element analysis shows that the maximum stress point of this structure under a longitudinal impact load of 300kN is 20% lower than the allowable value of the material.

(1)Composite seal system: configuration labyrinth mechanical seal with double protection, fluorine rubber lip seal with the compression type sealing ring (compression ratio 18 + / – 2%), which can effectively cut off grade PM10 level fine dust. The IP67 protection level ensures a maintenance-free cycle of 500,000 kilometers for the bearing lubrication system.

(2)Intelligent monitoring integration: Reserve an embedded sensor installation base, supporting real-time monitoring of multiple parameters such as temperature (-40 to 150℃), 진동 (0.5 to 10kHz frequency response), and stress (±2000με range). The data sampling rate can reach up to 10kHz, providing a technical foundation for predictive maintenance.

Function Implementation and System Integration of Railway Axle Housing

As the wheel/rail system of “mechanical conversion hubs” bears the multi-dimensional function bearing axle box body: static, dynamic load transfer: The vertical direction bears the self-weight of the bogie (전형적인 가치 8-12 톤) and the dynamic wheel-rail impact force (peak can reach three times the axle weight), as well as the centrifugal force when the lateral transmission curve passes through (under the maximum acceleration condition of 0.3g).

(1)Motion constraint control: The longitudinal/lateral displacement elastic constraint of the wheelset is achieved through the positioning node (rubber joint stiffness 25±3kN/mm) to ensure stability loss at the critical speed.

(2)Thermal management center: The heat dissipation fin design of the box body keeps the temperature rise of the bearing within ΔT≤35℃ (under a continuous working condition of 80km/h) and is combined with thermal grease (3.5W/m·K) to enhance the heat conduction efficiency.

(3)Fault isolation barrier: When the binding of the bearings, the mechanical weak link of the preset of the (shear pin) directional rupture, prevent expanding hot shaft failure as EN15085 welding system certification and ISO/TS22163 the in-depth implementation of rail transit industry standards, Modern axle box manufacturing has established a full-process quality control system covering material metallurgy (cleanliness control [O]≤30ppm), precision casting (CT8 grade accuracy), and intelligent detection (industrial CT defect identification accuracy 0.2mm).

Future Development of Railway Axle Hosuing

미래에, with the maturation of metal matrix composites (SiC particle-reinforced aluminum matrix composites) and 3D printed conformal cooling channel technology, the new generation of axle box bodies will achieve breakthroughs in lightweight (with a target weight reduction of 50%) and functional integration.

철도 차축 상자 패키지

Polybag+Carton box+Wood 케이스/팔레트, 고객의 요청에 따라

회사 프로필

뤄양포뇨중공업(Luoyang Fonyo Heavy Industries), 주식회사. 에 설립되었습니다 1998, 면적 72,600㎡, 이상으로 300 직원, 32 기술자, 포함 5 수석 엔지니어, 11 보조 엔지니어, 그리고 16 기술자. 낙양 공정 기술 센터로 평가되었습니다., 낙양기술R&D센터, 여러 번 국가 하이테크 기업.
우리의 생산 능력은 30,000 연간 톤. 현재, 우리는 주로 주강을 생산하고 있습니다, 주철 (회색 철, 연성이 있는 철, 등.), 완제품 가공 및 부품 조립.제품은 러시아로 수출되었습니다., 미국, 독일, 아르헨티나, 일본, 프랑스, 남아프리카,이탈리아 및 기타 국가.

자주 묻는 질문

1분기: 당신은 제조업체입니까, 아니면 무역회사입니까??
에이:우리는 제조업체입니다. 우리 회사는 에 설립되었습니다. 1998, 주조 업계에서 거의 30년 동안, 총면적 72,600㎡, 공장건축면적 51,000㎡.
2분기. 주요 제품은 무엇입니까?
에이: 우리는 주로 철강 주조에 중점을 두고 있습니다., 철 주조, 완제품 가공, 및 부품 조립 생산.
3분기: 주조 부품을 얼마나 정밀하게 생산할 수 있습니까??
에이: 우리는 다양한 주조 공정으로 주조 부품을 생산할 수 있는 능력을 갖추고 있습니다.. 생산은 ISO를 엄격히 준수합니다. 9001, ISO 14001 및 ISO45001,EN15085, 아이리스.
4분기. 샘플에 따라 생산할 수 있습니까??
 예, 우리는 귀하의 샘플이나 기술 도면으로 생산할 수 있습니다. 샘플을 받은 후에도 도면을 제작할 수 있습니다..
Q5: 배송 전 품질 관리는 어떻게 합니까??
에이: 품질 검사는 철강 주조 부품의 품질을 보장하는 매우 중요한 요소입니다.. 우리는 따른다 3 전체 생산 과정 중 검사 횟수. 그리고 우리는 재료 테스트 보고서를 제공할 것입니다, 치수 테스트 보고서, 납품 전에 고객에게 기계적 특성 테스트 보고서.

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