Product Details
PC steel bar is a kind of low carbon alloy steel bar with heat treatment for high strength pre-stressed concrete pile. It is mainly used in producing port concrete pile, high-rise building foundation concrete pile and pier concrete pile, etc.
Specification (mm) |
Facial shape type |
Cross-sectional
size (S/mm2) |
Tensile Strength (MPA) |
Plastic
elongation
strength (Mpa) |
Relaxation rate (%) |
Percentage elongation at maximum force (%) |
Elogation (MM/M) |
Percentage
elongation after
fracture
(%)
|
Surface quaility |
7.1 |
Spiralgroove |
39.0-41.7 |
≥1420 |
≥1280 |
≤2.0 |
≥3.5 |
Take a one-meter PC bar and place it on a flat surface, and the maximum natural rise of inside chord and arc is less than 5.0 mm. |
≥7.0 |
No damage and defects which will influence the use is allowed on the surface of the PC bar. Floating rust is allowed. |
9 |
62.4-66.5 |
10.7 |
87.8-93.6 |
12.6 |
121.9-130.1 |
14 |
150.2-160.1 |
On-line equipment
Pay-off stand→ Wire pack up device→ Mechanical descaling→ Drawing dies box→ Drawing machine→ Straightening→ 1# Cleaning machine→ Traction machine→ 600kW/8kHz IGBT)Pre-heating power supply(600kW/8kHz IGBT Intermediate frequency induction heating power supply)→ (200kW/30kHz IGBT)Temperature pre-raising power supply(200kW/30kHz IGBT Superaudio induction heating power supply)→ (200kW/50kHz IGBT)Temperature raising power supply(200kW/50kHz IGBT Superaudio induction heating power supply)+Quenching/Holding→ Quenching water tank→ (300kW/8kHz IGBT)Tempering power supply(300kW/8kHz IGBT Intermediate frequency induction heating power supply)+Tempering and holding pipe→ Tempering water tank→ 2#Traction machine→ Wire leading tank→ Wire leading tank→ 1 Take-up disc 1→ 2 Take-up disc 2
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