Gost standard 325mm bending machine

1.Production range of Gost standard 325mm bending machine:
1.1 The maximum dimension to be bend :325mm , The minimum :60mm
1.2 Wall thickness :8-18mm.Bending radiusa:2.5-6D.
1.3 Bending material
a.Carbon seamless pipe ,20G,A106B,A106C and so on,

b.Welding pipe:235B,345B,X42,X52,X60  and so on ,

c.Alloy pipe:335P12,P22,|P91,12Cr1MoVG,WB36 and so on ,

2.With PLC control system, bender thickness reducing 5-10%
                           Oval: 5%
                           Waver:hot 2%
                           Plain L=500 3%
                           Bending angel tolerance +/-0.5 degree

1.4.Wall thickness reduction :<10%,ovality<10%  wave degree <2%,planeness L=500<3,bending radius tolerance <10mm,bending degree tolerance :+1 or -1

1.5 Bending degree :<180

2.The design of Gost standard 325mm bending machine

2.1 The design of the Intermediate frequency power supply    
IF power supply:300KW,frequency : 1000-2000Hz,  input voltage : 380V
        quenching transformer 750V-1000KVA-2.5S 1set
KP-500A-1200V              6Pcs
KK-500A-1200V              4Pcs

Capacitor:RFM0.75-1000-1.0S             2pcs
Water cooled IF cable:2pcs    length :2500mm
induction heating coil 7pcs:80,100,125,150,200,250, ,300 (pipe size)
2.2The design of the hydraulic system of Ghost standard 325mm bending machine
a. pushing cylinder  2 piece  with  ID:140mm OD:168mm

material:45 # steel . The maximum pressure the cylinder can be hold is 25 MPa and the maximum pushing force  65T
b. Stroke for pushing cylinder 4000mm
c. Pump station: 10Lm/r plunger pump 1set, 32Lm/r gear pump 1set.
d. Motor: 7.5KW Electromagnetic control motor 1set, 7.5KW-4 motor 1set.
The oil tank : large  capability,good for cycle;with vice oil case, easy to wash

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Maintenance of machine:

The equipment should be serviced about once a month, maintenance as following:

1.Check each part of fasteners, ensure they are fixed.

2.Make sure that all connectors of the hydraulic pump station are equipped with oil seal rings, if

the seal rings appear damaged or oil leakage, should be replace timely.

3.If found forward or backward abnormality, first check electro-hydraulic valve whether operate

normal, if working normally, then you should check whether the electro-hydraulic relief valve or the

one-way unloading valve has contaminant that made it could not working or not(this phenomenon

usually happen when you just use this machine). If has contaminant, you should open it, clean by

gasoline or diesl oil, everything is ok, then re-install.

4.Operated this equipment within 15 days, you should clean the tank and filter hydraulic oil once.

5.When cleaning tank, you should clean the inside the oil filter of tank also.