Railway Machining Parts

DELTA PRECISION:Your Professional Railway Machining Parts Manufacturer!

Founded in 2004, Delta is driven by an unwavering commitment to quality and technology, a responsible attitude towards customers, continuous research and development, and the dedication of its employees. Delta has flourished and has become a high precision company in the high-speed rail, Miniature hydraulic, precision instrument equipment and medical device industries. A reliable partner for micro parts manufacturing, Delta provides customers with one-stop manufacturing solutions from part processing to finished product assembly, from the research and development stage to the mass distribution stage.

Why Choose Us

Assisting customers with technology development
Assisting customers in developing new products and providing total machining and manufacturing solutions for high-precision and micro-parts.

No compromise on quality
Strictly follow IATF16949 and ISO13485 quality management system standards for process quality control. There are many items that perform 100% full-size inspection. We provide material report, heat treatment/surface treatment report and out-going inspection report for each shipment. According to customers' requirements, we can also provide material RoHS test report and third party SGS material test report.

Stable precision machining process
More than ten years of machining experience, with precision and stable production equipment, strictly according to the drawing size and precision processing.

Main processes in-plant production

The main processes and product inspections are carried out in-house, except for heat treatment and surface treatment.

Proofing success rate is guaranteed

As long as the customer place the sample order, we guarantee to provide qualified samples, unqualified free redo, redo still can not meet the requirements of the drawings can be refunded.

More concerned about delivery than customers

We deliver strictly according to the contractual delivery date, and are more concerned about the delivery date than our customers.

Types of Railway Machining Parts

The railway machining parts produced by our company mainly include the following types:

Shock Absorber Valve

The shock absorber valve of high-speed rail is a key component in the suspension system of high-speed rail vehicles, providing a guarantee for the safety during the operation of high-speed rail.

Shock Absorber Valve Seat

Shock absorber valve seat is one of the key components of the valve in the railway system, which is mainly used to support and seal the valve to ensure that the High-Speed Train Valve Seat can completely block the flow of fluids (such as gas and liquid) in the closed state. Its core function is to provide a reliable sealing surface to prevent medium leakage, while withstand the mechanical stress and medium pressure during the valve opening and closing process, to ensure the safe and efficient operation of the system.

Advantages of Shock Absorber Valve

Precise control of damping force

The Safety Valve for Railway Dampers can precisely adjust the flow velocity and volume of the oil inside the rail damper according to different working conditions during high-speed rail operation, thereby generating appropriate damping force. When the vehicle starts, accelerates, decelerates, turns and passes over uneven roads, it can effectively suppress the vibration and shaking of the vehicle body, ensuring the smoothness and comfort of the vehicle's driving.

Buffering impact loads

During high-speed operation, high-speed rail is subject to various impact loads, such as the impact force generated by track joints and turnouts. The Safety Valves for Train Suspension can instantly buffer these impacts, converting the impact energy into other forms of energy such as the heat energy of the oil, reducing damage to the vehicle structure and equipment, and extending the service life of the vehicle.

Ensuring vehicle stability

By reasonably adjusting the damping force, the valve for shock absorber helps maintain the vehicle's posture stability, preventing excessive tilting or side sway of the body. When a train passes through a curve at high speed, it can keep the vehicle in good lateral stability, ensure that the train travels along the predetermined trajectory, and improve the safety of train operation.

Application of Shock Absorber Valve

Vehicle Suspensions

Shock absorber valves regulate the movement of the piston within the shock absorber, controlling the flow of hydraulic fluid. This process converts kinetic energy into heat, which is then dissipated by the shock absorber.

Machinery

Shock absorbers with specialized valves are used in various industrial settings to reduce vibrations in machinery, protect equipment from damage, and improve operational efficiency.

Construction

They are found in construction equipment like snow plow blades and dock lifts, where they absorb impacts and dampen vibrations.

Conveyor Systems

Shock absorbers help manage the movement of materials on conveyor belts, preventing jolts and ensuring smooth operation.

Marine and Aerospace

Shock absorbers are employed in marine and aerospace applications, such as for landing gear and other systems, to absorb impacts and dampen vibrations in demanding environments.

Advantages of Shock Absorber Valve Seat

Precise Damping Control: The valve seats, through their orifices and valving, regulate the flow of hydraulic fluid within the shock absorber, allowing for precise control over damping forces during compression and rebound.

Adaptability to Road Conditions: Modern valve designs, such as velocity-sensitive valving and acceleration-sensitive damping (ASD) valves, enable shock absorbers to adjust their damping characteristics based on road conditions and vehicle movements. This improves handling and ride comfort across varying terrains.

Reduced Body Roll, Sway, and Dive: Effective damping provided by valve seats helps minimize unwanted vehicle motions like body roll in turns, sway during crosswinds, and nose-dive during braking, enhancing stability and driver control.

Improved Handling and Tire Contact

By maintaining consistent tire-to-road contact, well-designed valve seats contribute to better handling, steering response, and braking effectiveness.

Enhanced Comfort

Smooth and controlled damping translates to a more comfortable ride for passengers by effectively absorbing shocks and vibrations from uneven road surfaces.

Increased Component Life

By effectively damping vibrations and excessive movement, valve seats contribute to reducing wear and tear on other suspension components, potentially increasing their lifespan.

Noise and Vibration Reduction

Optimized valve seat designs can minimize unwanted noise and harshness experienced from the road, further improving ride comfort.

Application of Shock Absorber Valve Seat

Brake system: In the air brake valve, the seat ensures the tightness of the brake cylinder;

Power system: In the steam valve of the locomotive boiler, the valve seat prevents steam leakage;

Hydraulic system: In the hydraulic control valve, the seat guarantees the sealing and flow control of the hydraulic oil.

Packaging and Shipping

Packaging
We typically begin by placing parts in anti-static bags. We then use foam padding or custom pallets to secure the parts in place and prevent them from shifting during transport. Once the parts are securely placed on the pallet, we place them in sturdy cartons. We also add cushioning material, such as bubble wrap or foam padding, around the carton to further protect the parts from impact.

Shipping
●Express Delivery:For customers who need parts urgently, express delivery is the best option. Companies like DHL, FedEx, and UPS offer fast and reliable express delivery services. These services typically guarantee delivery within 1-3 business days, depending on the destination.

●Air Freight:For larger orders that still require relatively fast delivery, air freight is a good option. Air freight transit times are typically approximately 3-7 business days, depending on distance and any customs clearance requirements.

●Sea Freight:For large orders where time is not a critical factor, sea freight is the most economical option. Sea freight is slower than air freight, with transit times ranging from 2 to 8 weeks depending on the destination.

Our Certificate

FAQ

Q: Can you provide samples before mass production?

A: Sure, sample fee is needed, will be returned when mass production if possible.

Q: How about the lead time?

A: It depends on quantity, generally 7-20 days after order confirmation.

Q: What will you do if we receive poor quality parts?

A: Please kindly send us the pictures, our engineers will find the solutions and remake them for you asap.

Q: What are shock absorber valve seats and what do they do?

A: Shock absorber valve seats are critical components within a shock absorber's valving system that help regulate the flow of hydraulic fluid, controlling the rate at which the suspension compresses and extends. Essentially, they act as seals or barriers that direct the hydraulic fluid through specific orifices, creating resistance and damping the oscillations of the suspension springs.

Q: Can you replace just the valve seat, or do you need to replace the whole shock absorber?

A: In most cases, if the valve seat is damaged or worn, the entire shock absorber needs to be replaced. Some high-end, performance-oriented shock absorbers may be designed for repair and servicing, but these are exceptions. It's crucial to replace shock absorbers in pairs (per axle) to ensure balanced suspension performance and prevent accelerated wear on the new unit.

Q: What are the common problems associated with shock absorber valve seats?

A: Wear and Tear: Over time, friction between the valve and seat can lead to wear, affecting their ability to control fluid flow.
Leaking Fluid: Damaged seals or valve seats can result in fluid leaks, reducing the shock absorber's damping effectiveness and potentially leading to poor handling.
Reduced Damping Capability: Worn valve seats may not provide adequate resistance, leading to excessive bouncing, poor ride quality, and longer stopping distances.
Valve Seat Failure: Poor seat design or excessive friction can lead to catastrophic valve seat failure, causing loss of damping and potential safety hazards.

Q: How does a shock valve work?

A: When landing, shock struts will compress. This compression will result in less space inside of the shock struts, thereby increasing their internal pressure. Shock strut valves control the flow of fluid in shock struts while simultaneously ensuring that the internal pressure is right.

Q: How do valve stacks affect damping?

A: Valve stacks consist of shims that control the flow of hydraulic fluid through the shock absorber.
Adjusting the number and arrangement of shims can change the damping characteristics, affecting how the shock responds to bumps and vibrations.
Different valve stack configurations (like linear, progressive, digressive, and regressive) offer varying damping curves for different driving conditions.

We're professional railway machining parts manufacturers and suppliers in China, specialized in providing high quality customized products. Be free to wholesale cheap railway machining parts in stock here and get free sample from our factory. For price consultation, contact us.

Non Standard Piston for Train Shock Absorbers, Railway Damper Parts, Precision piston for damper