8 steps of elastic rail clips production process
AGICO supplies elastic rail clips which are heavily used components in railway track fastening. high quality spring steel bars are used as raw material for elastic rail clip production to ensure enhanced sturdiness and long durability. Due to the high quality raw material and standard production process, many railway projects has saved maintenance cost with AGICO elastic rail clip product.
As a leading railway fasteners manufacturers in China,with production license of Chinese railway Ministry, advanced technology, high precision inspection instruments and service, our products have been widely exported the USA, Germany, Spain, Japan, Australia, Italy, Netherlands, Belgium, Poland, the UK, India, and South Africa etc.
Elastic Rail Clip Production Process:
Raw materials and inspection
The raw materials used in the project are round steel bar(φ 13mm). After transported to the factory, round steel bar is inspected and stored in raw material storage place for production and use.
Automatically Cutting to Length
The round steel is sent to the hydraulic cutting machine for cutting, and round bar length is different according to the specific product, cutting length is controlled within the range of 430 mm.
After round steel is cut, it is continuously fed into an intermediate frequency heating furnace (all solid state induction heater) for heating to 1050 °C. (Use electric heating, no particulate matter is produced), heating time is about 10s.
After heating, round steel bar is fed into a press and bent up and down through the mold (requires three times of punching) to finally form a spring strip product. The transfer is carried out using a robotic intelligent handling system during the stamping process.
Elastic rail clip with qualified shape will enter the quenching tank through mesh belt for quenching, the quenching temperature is 800 °C, and quenching time is 10 minutes.
After quenching, elastic rail clips are naturally cooled. After cooling, the elastic rail clips enter the tempering furnace for tempering, which is heated by natural gas, and the temperature is generally about 400 °C. The main purpose of tempering is to improve product strength, plasticity and toughness, and tempering time lasts for 90 minutes.
After tempering, elastic rail clip is coated with anti-rust liquid.
Finished Product Inspection
Elastic rail clips passed inspection are the finished product.
Major Rail Clip Types
|Type||E clip (e1809, e2006,e2007,e2009,etc)|
|Skl clip (skl1,skl3,skl12,skl14)|
|Or the type by customers’ drawings|
|Chemical composition(%)||C:0.56-0.64, Mn:0.60-0.90, Si:1.60-2.00, Cr:≤0.35, P:≤0.03, S:≤0.03||C:0.56-0.64, Mn:0.40-0.70, Si:1.40-1.80,Cr:0.70-1.00 P:≤0.03, S:≤0.03||C:0.52-0.60, Mn:0.60-0.90, Si:1.50-2.00,Cr:≤0.35 P:≤0.03, S:≤0.03||C:0.35-0.42, Mn:0.50-0.80, Si:1.50-1.80, P:≤0.03, S:≤0.03|
For e clip: 44-48HRC
For skl clip: 42-47HRC
for Dia.18 is 3 millions cycles without breaking
for Dia.20 is 5 millions cycles without breaking
|Surface||plain (oiled), Oxide black, color painting, HDG, Zinc Plating...|
|Standard refers||DIN17221, BS970, GB/T1222|
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