Steel strand wire making machine

Description:

1.low relaxed prestress
2.with the capability of 30, 000 tons per year
3.good quality

1. Manufacturingtechnique

 Theseller will provide a Low Relaxed Stress Steel Stranded WireProductionLine for production of 1×7, Ø9.53~17.8mm low relaxed pre stresssteel stranded wire, with the capability of 30, 000 tons per year.The seller will guarantee the manufacturing technique, productquality, equipment unction, production capability and period ofguarantee, and make sure the product will be in accordance withChinese Industrial Standards and corresponding with foreignstandards.

1.1Specifications of finished products

Seq.	Strandsstructure	Strandsdiameter Φmm	Tensilestrength MPa	Remark
1	16	9.53	≥1860
2	16	11.1	≥1860
3	16	12.7	≥1860
4	16	15.24	≥1860
5	16	17.8	≥1860

 

 

 

 

 

 

 

 

 

 

1.2Standards of products

   GB/T5224-2003, American Standard ASTM-A416-2002, JapaneseStandard, European Standard.

1.3 Rawmaterial

  The PC strands are drawnfrom good quality carbon steel hot rolled   coils andthen twisted.

1.4 Flowof manufacturing technique

  Wire coil sorbitizing----Pickling &phosphatization----Wire

  drawing----Twisting----Stabilization treatment----Wire taking up&

   Pay off----Layer winding----Productinspection----Packing----Warehousing

 

 

1.strander 2.integrating tooling 3.distortion equipment4.tensioning system 5.movable intermediate frequency annealingstove 6.cooling tank 7.Constant tensioning system 8.wire receiving& release device 9.strand oscillator 10.windingsystem

1.5 Productioncapability

1)Working system

  Continuous workingsystem, 7 days a week without break during

Weekend

2) Productioncapability

30000T/year

2. Equipmentdescription:

2.1 Skip strandingmachine 1 6×1120

  For the skip strandingmachine, each set consists of 7 pieces of 1120 bobbins, is drivenby single motor. The transmission shaft and

Rotatingbody are connected by synchronous belt. With stable lay pitch, itguarantees the lay lengths of stranded wires in differentdimensions are in accordance with GB/T5224-2003. Big size bearingssupport the threading barrel to get enough space and make threadingvery easy. Each revolving part are connected with one another by aGRP cambered plate, which enables it reach the speed request ofhigher stranding machine. 7 single wires pass through each ownposition without interference with each other. The bracket ofcylinder escapement is movable, makes it easier for transfer andbalance adjustment. Damping system is loaded on the bracket toadjust the mutative tension of each single wire during production.Integrative bottom frame can make sure the bunching machine workssteadily.

Max.Rotating speed       680rpm

Drivingmotor                   A/C, 90KW, 1500rpm

Bobbinsize                    DIN1120

Dia. offlange                  1120mm

Dia. ofbarrel                  630mm

Totalwidth                      964mm

Innerwidth                      840mm

  Max.weight                  4000kg

2.2 Composing die andDeformer

   Different composingdies are loaded inside the die box for different size of wires.Manually adjusted by guide screw.

  Each deformer wheel is manually micro-adjusted, hydraulic cylinderopening to prevent broken lot strands.

2.3 Tensionsystem

Tensioning system consists of two sets of tension equipments. Twotension wheels rotate same way and make the wire tensioned betweenthe wheels. The wheels are welded by 42CrMo forged rings, machinedtooled and then quenching processed, with surface hardness ofHRC≥58. Cone gears are used in speed reducer.

Max.Speed                  100m/min (Ø15.24)

Max.Tension                 155000N (Ø17.8)

Motors:No.1                A/C, 250KW, 1000rpm

            No.2                A/C, 200KW, 1000rpm

Dia. Ofwheel:              2×2050mm

Numberof driver groove         5,V shaped

Numberof No.1 wheel groove     4, U shaped

Numberof No.2 wheel groove     4, U shaped

Steel strand wire making machine