The Motor Housing Vital Protector to Railway Traction Motor

Introduction of The Motor Housing

As the “second skin” of the traction motor, the motor housing has evolved from a simple protective device to a composite carrier integrating materials science, thermodynamics, and intelligent sensing. This seemingly ordinary metal component is now writing the most technologically advanced evolutionary history in the field of rail transit.

I. The Feature of The Motor Housing

Modern traction motor housings are formed using the low-pressure casting process with ZL114A aluminum alloy, a space-grade material. After T6 heat treatment, its tensile strength reaches 320 MPa, and the elongation rate remains stable at over 3.5%. In the actual application on the Shanghai-Nanjing High-Speed Railway, this material has enabled the housing components to reduce weight by 35% while increasing the fatigue life to 2.3 times that of traditional castings. The shell wall thickness design adopts bionic principles, with a uniform thickness of 12mm in the main area and an 18mm reinforcing rib network, forming an energy-absorbing structure similar to a turtle shell, successfully passing a static load test of 1500kN.

II. The Function of The Motor Housing

Facing complex operating environments, the new housing builds a five-layer protection system: the outer layer undergoes micro-arc oxidation treatment to form a 30μm ceramic film layer, enhancing salt spray corrosion resistance by 70% compared to traditional processes; the middle layer’s gradient density structure effectively absorbs vibration energy below 2000Hz; the built-in copper-nickel alloy electromagnetic shielding layer reduces motor electromagnetic interference to below the EN 55011 Class B limit; the innovative aerogel insulation layer maintains structural integrity for 2 hours at 800°C; and the self-healing insulating coating on the inner surface automatically fills scratches up to 3mm.

III. The Management Systems The Motor Housing

The breakthrough asymmetric heat dissipation structure has overturned traditional design concepts. The 45° inclined guide vanes and curved flow deflectors work together to increase airflow distribution uniformity by 42%. Field test data from a metro project show that under continuous climbing conditions, the motor temperature rise with this design is 18°C lower than that of traditional structures, with key part temperature differences controlled within ±4°C. More notably, the embedded phase change heat storage unit utilizes the latent heat characteristics of paraffin-based composite materials to maintain motor thermal balance for 15 minutes during grid fluctuations.

IV. The Parameter of The Motor Housing

V. Service Innovation for the Motor Housing

The modular design concept is reshaping the maintenance system. The use of quick-release interfaces for housing components has reduced on-site replacement time from 8 hours to 90 minutes. In the renovation project of Shenzhen Metro Line 11, the engineering team utilized augmented reality technology to quickly diagnose the status of internal components through positioning marks on the housing, increasing maintenance efficiency by 65%. Even more promising is the application of digital twin technology, where each housing generates a dedicated 3D model at the factory, enabling precise prediction of remaining service life.

Company Profile

Luoyang Fenyo Heavy Industries Co., Ltd. was founded in 1998, covers an area of 72,600㎡, with more than 300 employees, 32 technicians, including 5 senior engineers, 11 assistant engineers, and 16 technicians. It has been rated as Luoyang Engineering Technology Center, Luoyang Technology R&D Center, and National High-tech Enterprise for many times.

Our production capacity is 30,000 tons per year. Currently, we mainly produce cast steel, cast iron (gray iron, ductile iron, etc.), processing of finished product and component assembly. The company mainly produces parts and railcar gearbox component assemblies for high-speed rail, railcars, locomotives, passenger cars, subways, mines, coal machines, petroleum machinery, wind power, water conservancy, ceramics, engineering machinery and other equipment. At the same time, the products have been exported to Russia, the United States, Germany, Argentina, Japan, France, South Africa, Italy and other countries.

FAQS

Q1: Are you a manufacturer or trading company?
A:Yes,our company was founded in 1998, with nearly 30 years in casting industry, a total area of 72,600㎡, with a factory building area of 51,000㎡.
Q2. What are your main products?
A: We primarily focus on steel casting, iron casting, finished product machining, and component assembly production.
Q3: How precision can you produce casting parts?
A: We have the capability of producing casting parts with different casting processes. The production is strictly comply with ISO 9001, ISO 14001 and ISO45001,EN15085, IRIS.
Q4. Can you produce according to the samples?
 Yes, we can produce by your samples or technical drawings. We can build drawings for you after we get your samples too.
Q5: How do you do Quality Control before delivery?
A: Quality inspection is a very important factor to guarantee the quality of steel casting parts. We follow 3 times of inspection during the whole production process. And we will provide material testing report, dimensional testing report, and mechanical properties testing report to our clients before delivery.

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