1 , this apparatus is mainly used for quenching oil casing, high pressure boiler tubes and other products + tempering. The process flow is divided into: quenching process and normalizing process.

2 , the equipment quenching, normalizing total power is 5000kw , tempering power is 3500 kw

3 , production capacity

  A . Normalizing: full power is 5000 kw , the output is not less than 12.06 tons

  B . Continuous on-line: quenching + tempering the full power of 5000 kw + kw 3500 running yield of not less than 12.06 Dun

  C . Annual output of 80000 tons

4 , technical parameters:

A . Steel pipe parameters before quenching + tempering :

Steel pipe outer diameter range: (φ 73.02 ~ φ 159 ) outer thickening (outer diameter φ 73.02 ~ φ 88.9 ) two kinds , the wall thickness is 5 ~ 16mm ,

The length of the steel pipe is 5.8 ~ 12.5m , the wall thickness tolerance of the steel pipe is ± 8% , the maximum weight of the single pipe is 0.520 tons , the maximum weight of the single pipe is: 43.3kg quenching + tempering production

B . Quenching + tempering equipment performance and technical requirements:

1. Realize the functions of feeding, conveying, heating, quenching, tempering and cooling of multi-standard seamless steel tubes.

2 , steel tube normalizing, quenching heating the highest temperature 1100 °C, generally 850 °C ~ 980 °C

3 , tempering temperature: 550 °C ~ 720 °C

4 , the heating temperature of the steel pipe is uniform, the maximum temperature difference between different parts of the steel pipe: quenching ± 10 °C, tempering ± 8 °C, radial ± 5 °C

standard.

C , equipment parameters and technical requirements:

1 , quenching, normalizing power is 5000 kw , frequency is 1000 ~ 1500Hz

2 , tempering power is 3500 kw , frequency is 1000 ~ 1500Hz

3 , inlet water temperature: 0 ~ 35 °C

4 , the water temperature is less than 55 °C

5 , water pressure 0.2 ~ 0.3MPa

6 , air pressure 0.4M p a

D, grid requirements:

a) 5000 kw + 3500 kw medium frequency power supply, the power distribution capacity is not less than 10200 kvA

b) The grid voltage should be sine wave , harmonic distortion is not more than 5%

c) The imbalance between three-phase voltages should be less than ± 5%

d) The continuous fluctuation of the grid voltage does not exceed ± 10% , and the grid frequency does not change by more than ± 2 (ie should be between 49-51HZ )

e) IF power incoming cable adopts three-phase four-wire system

f) Incoming cable specifications: 1250 kw , 180mm 2 × 3 (copper core) 1000 kw , 160mm 2 × 3 (copper core)

h) IF power input voltage: 380V

i ) Auxiliary equipment power supply ≤ 366 kw

g ) Auxiliary equipment power supply voltage 380V ± 10%