Embedded Files
To judge if a new Pandrol e-Clip is qualified, you must perform a combination of visual, dimensional, material, and performance-based inspections, following official specifications like the "PANDROL BRAND 'e' Series Clips Supply Specification A-A". The specific criteria will depend on the clip series (e.g., E2007) and its intended use.
New clip is judged against manufacturing specifications, including dimensional accuracy, hardness, and protective coating standards. A certificate of conformity is supplied with each consignment.
Step 1: Document review
Before physical inspection, verify that the supplier provides a Certificate of Conformity for the consignment. This document should confirm the clips meet all specification requirements.
Step 2: Visual inspection
A qualified e-Clip must be free from defects that could compromise performance. Look for:
Surface flaws: The clip should be free from chips, cracks, or other surface defects.
Deformation: Check for any components that are bent, distorted, or broken.
Surface marks: Marks from the forming tools are acceptable if they are smooth and free from sharp indentations.
Excessive burrs: The clip must be free from excessive burrs that could be harmful during handling or affect proper assembly.
Protective coating: The clip should have a complete and unblemished electrostatic powder coating or another approved protective coating.
Step 3: Dimensional accuracy
Use Pandrol-specific gauges or other precise measuring fixtures to verify that the clip's dimensions conform to the relevant Pandrol copyright drawing.
Step 4: Material inspection
For a new clip, the material and heat treatment must be verified to ensure strength and durability.
Raw material certification: The steel supplier must provide a certificate detailing the chemical composition and cast number of the spring steel. Standard materials often include alloy spring steel such as 56SiCr7 or 60Si2MnA.
Hardness test: Test the surface hardness to ensure it falls within the specified range (typically 44 to 48 Rockwell C). This test involves grinding a flat area on the underside of the clip and taking the mean of multiple indentations.
Step 5: Performance testing
A qualified e-Clip must be able to perform under stress. While typically done in a controlled lab environment, these are the key performance metrics:
Clamping force (toe load): A test using a tool like the PPI CF02 determines the clip's strength. For a newly installed clip, the clamping force should fall within the manufacturer's specified range (e.g., 900–1300 kgf or 8–12 kN).
Fatigue life: Standard tests, such as those based on EN 13146, subject the clip to millions of repeated loading cycles without breaking.
Resistance: A new clip must offer sufficient creep and twisting resistance to hold the rail securely in place, even on continuously welded track.
Installation performance: The clips must be installable with standard equipment without damaging the tie, shoulder, or rail.
Step 6: Identification and packaging
Markings: The clip must be marked with the correct identification code.
Packaging: Inspect the packaging to ensure the clips are supplied in the correct quantity and weight, as specified in the supply agreement.
is an elastic rail fastening system made of spring steel that secures a railway rail to a base plate on a sleeper. It functions as a self-tensioning fastener to maintain the rail in its correct position, absorb forces from trains and temperature changes, and prevent the rail from moving horizontally or vertically. The "E" refers to its shape, and it is installed in line with the rail.
Properties of our clips
Properties of our clips
Kunshan Signum Machinery Technology Co.,Ltd is able to custimze Pandrol E2055 rail clip according to your drawing and requirements with competitive price. We are able to finish 10000 pcs in one day.
CALL US NOW
Direct Line:+86 512 50353196
Whatsapp:+86 158 6266 4803
Email: admin@rail-fastening.com
Address: 120 Tongjing Road, Lujia Town, Kunshan, Jiangsu 215331 China
Report abuse