| |
Head-hardened Rail
Click here to print PDF file
PST produces standard and head-hardened "Tee" rail to AREMA, ASTM, ASCE, ARA and customer specifications in the following sections: 85AS, 90RA, 100RB, 100RE, 115RE, 119RE, 132RE, 133RE, 136RE, 136-8, and 141. We also offer End Hardening heat treatment.
Prime lengths are 80' 0", 78' 0" and 39' 0".
Short lengths are 70' 0", 60' 0", 33' 0" and 30' 0".
PST produces ASTM Crane Rail--104CR, 135CR, 171CR, 175CR.
Prime lengths are 78' 0", 60' 0" and 39' 0".
We also produce Special Sections to Customer and PST specifications--132TW, 136TW,GT 126, GT 140 and 115RE Strap Guard.
PST also produces joint bar sections in mill lengths, boltless adjustable braces, boltless adjustable frog clamps and serrated washers.
Standard Tee
Rail
| Weight and Section of
Rail |
Height of Rail
A |
Base of Rail B |
Width of Head C |
Thickness of Web
D |
Depth of Head E |
Height of Web F |
Depth of Base G |
Head Angle a |
Base Angle a' |
Slope of Head s |
Height of Bolt Hole
H |
| 141 |
7 7/16 |
6 |
3 1/16 |
11/16 |
2 5/32 |
4 3/32 |
1 3/16 |
18.4� |
14� |
5� |
3 3/32 |
| 136-RE |
7 5/16 |
6 |
2 15/16 |
11/16 |
1 15/16 |
4 3/16 |
1 3/16 |
1 to 4 |
1 to 4 |
1 to 40 |
3 3/32 |
| 132-RE |
7 1/8 |
6 |
3 |
21/32 |
1 3/4 |
4 3/16 |
1 3/16 |
1 to 4 |
1 to 4 |
1 to 40 |
3 3/32 |
| 119-RE |
6 13/16 |
5 1/2 |
2 21/32 |
5/8 |
1 7/8 |
3 13/16 |
1 1/8 |
1 to 4 |
1 to 4 |
1 to 40 |
2 7/8 |
| 115-RE |
6 5/8 |
5 1/2 |
2 23/32 |
5/8 |
1 11/16 |
3 13/16 |
1 1/8 |
1 to 4 |
1 to 4 |
1 to 40 |
2 7/8 |
| 100-RB |
5 41/64 |
5 9/64 |
2 21/32 |
9/16 |
1 45/64 |
2 55/64 |
1 5/64 |
13� |
13� |
3 |
2 65/128 |
| 100-RE |
6 |
5 3/8 |
2 11/16 |
9/16 |
1 21/32 |
3 9/32 |
1 1/18 |
1 to 4 |
1 to 4 |
1 to 16 |
2 1/2 |
| 90-RA |
5 5/8 |
5 1/8 |
2 9/16 |
9/16 |
1 15/32 |
3 5/32 |
1 |
14� |
14� |
1 to 16 |
2 37/64 |
| 85-AS* |
5 3/16 |
5 3/16 |
2 9/16 |
9/16 |
1 35/64 |
2 3/4 |
57/64 |
13� |
13� |
STR |
2
17/64 |
* Meets ASTM A-1
You can reach PST Sales at 800-344-7245 or 717-986-2000, or FAX 717-986-2700.
Our process is listed below:
 |
1. DC Electric Arc Furnace Direct current technology provides PST
with the best available means of making steel. Advantages
include large heats, more heats per day, greater consistency
and greater reliability. This results in significantly better
steel quality. Also, the eccentric bottom tapping promotes
more efficient tapping and cleaner steel.
|
|
 |
 |
2. Ladle Arc Reheating Furnace This furnace performs additional steel
refining by providing excellent temperature control and
precise chemical adjustment capabilities. It provides steel to
the Jumbo Bloom Caster at the correct temperature, chemistry
and time. Argon stirring, through a porous plug in the bottom
of the ladle, promotes the homogeneous mixing of additives to
the ladle, assists in temperature control and promotes the
flotation of non-metallic inclusions.
|
|
 |
 |
3. Tank Vacuum Degasser Most importantly, vacuum degassing
lowers the hydrogen content of the liquid steel. Argon
stirring during degassing also assists the removal of hydrogen
and further improves steel cleanliness. Clean steelmaking
practices, combined with the benefits of the Ladle Furnace and
Vacuum Degasser, means that the Jumbo Bloom Caster receives
steel with significantly improved internal cleanliness levels,
correct chemistry and correct temperature at the correct time.
This results in improved rail fatigue life.
|
|
 |
 |
4. Continuous Jumbo Bloom Caster The Jumbo Bloom Caster produces the
cleanest rail steel possible, because it eliminates
reoxidation by completely shrouding the molten steel from the
atmosphere, which prevents the formation of harmful
non-metallic inclusions. Rapid solidification affects
the inclusion distribution. Those that remain tend to be
small, globular and more finely dispersed. Also, surface
quality is dramatically improved. The resultant blooms are
world-class quality, with a sound interior and excellent
surface � the ideal starting material for rolling mills.
Special casting practices and processes, developed by a
dedicated team of researchers and caster specialists, have
further improved the internal cleanliness of the blooms by
floating out additional remaining impurities.
|
|
 |
 |
5. Soaking Pits Our soaking pits enable the hot
connection of the continuous cast bloom to the rolling mills.
Hot connection eliminates the potential thermal cracking
problems associated with cooling blooms to ambient temperature
and reheating. Also, the Soaking Pit Control System has been
updated completely with the latest computer control
technology.
|
|
 |
 |
6. 44" Blooming Mill, 35" Rougher, 28" Rail Mill Three separate mills are used to roll
the continuous cast blooms into finished rail. Due to its
jumbo size, each bloom requires many passes to reduce it to
the final rail section. The resulting 25-to-1 reduction ratio
is much greater than any other producer of rails from
continuous cast steel.
|
|
 |
 |
7. In-Line Head Hardening This unit, a 101-meter in-line process
at the exit end of the 28" Rail Mill, uses the latent heat
from the rolling process. The system is fully computerized and
uses water sprays to slack-quench the rail. The resultant
product is composed of pearlite with fine inter-lamellar
spacing, which provides rails with excellent hardness and
improved wear resistance. Residual stresses are low, and
straightness is excellent. The technology for this system
comes from CRM (Centre de Recherches Metallurgiques, Leige,
Belgium) and MMRA (Metallurgique et Miniere de Rodange-Athus,
Luxembourg). Produced by this technology, rails used in
heavy-haul service in the U.S. are performing to world-class
standards.
|
|
 |
 |
8. Controlled Cooling Rails are cooled in long-length,
insulated boxes to ensure the removal of any remaining
hydrogen gas. While the reduction of hydrogen levels
through vacuum degassing reduces the need for control cooling,
we continue to use control cooling of the rails to further
reduce the risk of hydrogen damage.
|
|
 |
 |
9. Roller Straightener Rails are put through a two-plane
roller straightening operation. Load levels are continuously
monitored to ensure the production of straight rails without
mechanical damage.
|
|
 |
 |
10. In-Line Rail Inspection Includes utilization of the following
procedures and instruments:
� Visual Inspection Station
� Ultrasonic Twist Gauge measures elapsed time between two sound beams directed on
the base of the rail.
� DAPCO 300 Ultrasonic Unit is state-of-the-art, fully computerized with an
automatic paint spraying system, and utilizes an array of transducers mounted in neoprene
wheels, strategically placed around the rail to monitor internal quality.
� Laser Straightness Gauge performs a three-point measurement of deviations
throughout the rail body. Laser beams are directed at the head of the rail and data is
monitored continuously by a computer.
� Optical Section Measurement Unit
automatically measures key dimensions of the finished rail.
Data is continuously collected and analyzed by a computer to
aid section control and allow further reduction of section
variability.
|
|
 |
 |
11. In-Line Bar Coding Application System This system provides effective
identification, inventory control and shipping control for all
rails shipped to customers. Bar code tags can be used
subsequently by customers in their rail inventory, rail
welding and field inspection operations.
|
|
 |
 |
12. Shipping Rails are shipped in our own fleet of
long-length MTTX cars, specifically designed for shipping 80'
rails without banding. This reduces customer unloading time.
We can also ship rails in customer-owned cars. |
|