Axle Steering Knuckles as “kraftsamling” af Bogie-systemet

Introduction of Axle Steering Knuckles

In the field of modern rail transit equipment manufacturing, bogier, as the core components that support train operation, have always been at the forefront of technological breakthroughs in the industry in terms of material engineering innovation. Blandt dem, the axle steering knuckles, som “kraftsamling” of the bogie system, undertakes multiple missions such as transmitting driving force, adjusting the steering Angle, and buffering dynamic loads.

Material Selection And Development of Axle Steering Knuckles

Materials research and development to follow focuses on learning performance, environmental adaptation, and technology features of 3 the coordinate system. The current mainstream of 42 crmo4 alloy structural steel is the choice under the system of typical products:

Mechanics index level: the tensile strength of 900-1100 mpa, yield strength of no less than 650 mph, to ensure the maximum axle load of 30 tons of extreme conditions maintain structural integrity. Through computer-aided stress simulation, the fatigue life of this material under alternating loads reaches the level of 10^7 cycles.

Dimension of environmental considerations: after nitriding surface treatment, material surface hardness can reach HV700, cooperating with 0.3 mm depth of hardening layer;

In environmental dust, wear-resisting coefficient is 40% more than conventional materials. The specially proportioned Cr-Mo-V alloy system enables the components to maintain stable mechanical properties within the environmental window ranging from -40℃ to 120℃.

Technology Features of Axle Steering knuckles

Using the die forging forming process, the material under the 1150 ℃ heating temperature shows excellent liquidity and, with subsequent conditioning treatment, can achieve the overall hardness HRC28-32 with core toughness perfect balance. This gradient hardness distribution enables the component to simultaneously meet the requirements of surface wear resistance and overall impact resistance.

Function of Axle Steering Knuckles

In the practical operation of rail transit equipment, steering knuckle materials by micro structure control realize the three functions:

（1）Dynamic stress dissipation mechanism based on the theory of dislocation multiplication design of fine-grain strengthening structure, making the material under the wheel/rail impact, through the grain boundary sliding effectively disperse stress concentration. Experimental data show that the impact absorption energy of fine-grained steel treated by the controlled rolling and controlled cooling process reaches over 80J, hvilket er 25% higher than that of the traditional process.

(2)Interface tribology optimization: the laser cladding technique was used to construct the gradient composite layer on the surface of the matrix-formed Cr3C2 cermet phase. This structure stabilizes the friction coefficient of the mating surface of the steering knuckle pin shaft within the range of 0.08-0.12. Combined with the solid lubricating film technology, the maintenance cycle is extended to 800,000 kilometer.

(3)Environmental response intelligent protection: innovation research and development of nanometer composite coating system, it contains pH response type corrosion inhibitor microcapsules. When the environmental humidity exceeds the threshold, the capsule automatically releases repair factors to form a self-repairing passivation film on the metal surface. Salt spray tests show that this technology extends the corrosion resistance life of components by more than three times.

Parameter of Axle Steering Knuckles

Package of Axle Steering Knuckles

Polybag+Kartonæske+Trækasse/Palle, efter kundens ønske

Virksomhedsprofil

Luoyang Fonyo Heavy Industries Co., Ltd. blev grundlagt i 1998, dækker et område på 72.600㎡, med mere end 300 medarbejdere, 32 teknikere, inklusive 5 senioringeniører, 11 assistentingeniører, og 16 teknikere. Det er blevet vurderet som Luoyang Engineering Technology Center, Luoyang Technology R&D Center, og National High-tech Enterprise i mange gange.
Vores produktionskapacitet er 30,000 tons om året. For tiden, vi producerer hovedsageligt støbt stål, støbejern (gråt jern, duktilt jern, osv.), forarbejdning af færdigt produkt og komponentsamling. produkterne er blevet eksporteret til Rusland, USA, Tyskland, Argentina, Japan, Frankrig, Sydafrika,Italien og andre lande.

Ofte stillede spørgsmål

Q1: Er du producent eller handelsvirksomhed?
EN:Vi er en producent. Vores firma blev grundlagt i 1998, med næsten 30 år i støbeindustrien, et samlet areal på 72.600㎡, med et fabriksbygningsareal på 51.000㎡.
Q2. Hvad er dine vigtigste produkter?
EN: Vi fokuserer primært på stålstøbning, jernstøbning, bearbejdning af færdigt produkt, og komponentmontageproduktion.
Q3: Hvor præcision kan du producere støbedele?
EN: Vi har evnen til at producere støbedele med forskellige støbeprocesser. Produktionen er strengt i overensstemmelse med ISO 9001, ISO 14001 og ISO45001, EN15085, IRIS.
Q4. Kan du producere i henhold til prøverne?
 Ja, vi kan producere efter dine prøver eller tekniske tegninger. Vi kan også bygge tegninger til dig, efter at vi har fået dine prøver.
Q5: Hvordan laver du kvalitetskontrol før levering?
EN: Kvalitetsinspektion er en meget vigtig faktor for at garantere kvaliteten af ​​stålstøbedele. Vi følger efter 3 inspektionstidspunkter under hele produktionsprocessen. Og vi vil levere materialetestrapport, dimensionel prøvningsrapport, og mekaniske egenskaber test rapport til vores kunder før levering.

Hvis du er interesseret i alle produkter,er du velkommen til at kontakte os.
Kontakte:Cathy Xu
E-mail:[email protected]
Mobil:008615515321683