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using for pre-processing of high carbon wire for descaler, water washing ,boron coatiing , drying - details see: https://www.machineto.com/steel-wire-pre-precessing-line-10167922

Processing Material: it is adopted the 70# -90# highquality control cooling carbon steel wire rod as raw material , the wire rod diameter isΦ5.5mm~Φ6.5mm, intensity is 950-1300 Mpa, wire rod coil weight :1.8-2.5 Tons , the outside diameter of the wire rod coil : Φ1200~Φ1400 mm

Working time: the workshop with three shifts continuous working system, the total working time is 7920 hours per year

Processing flow

pay-off rack →wire drawing chaos switch→Mechanical descaler →pressure washing tank→preheating water washing tank→Boron coating tank→Drying→wire drawing machine

5.ThePre-treatment processing line energy medium requirements

Total installed Power (Kw)	Water		Vapour		Low pressure air		Medium pressure air
35	Pressure MPa	Flow Nm3/h	Pressure MPa	Consumption Kg/h	Pressure MPa	Flow Nm3/h	Pressure MPa	Consumption m3/h
	0.2	1	0.4	220	0.05	120	0.5	0.2

Technical Specification

2.Production Line Technical Parameters

2.1 Speed:90 m/min(Maximum):90 m/min

2.2 Wire rod specification: Φ5.5-Φ6.5mm

2.3 Processing Material: ≤0.90%C Maximum

2.4 Processing wire quantity: one pcs

2.5 The standard height of wire movement: 900mm

2.6 Equipment layout :working tank is above on the liquid tank, the liquid up and down cycle, no underground project2.7 wire movement: straight type

2.8Concentration detection, control mode: measurement and supplying by manual

2.9 Temperature measuring, controlling

Preheating: automatic controlling temperature, LCD display

Boron Coating: automatic controlling temperature, LCD display

Drying: automatic controlling temperature, LCD display

2.10Preheat tank and boron coating tank with automatic replenishment, liquid level control2.11 Water washing mode:Ladder-type, re-use, overflow discharge

2.12Heating method: steam / electric heating.

3.Equipment description

3.1 Pay-off rack : With the duck-mouth typepay-off device, it can bear above 2.5 Tons coil

One wire with one pay-off rack, total 2 pay-off racks

3.2 wire chaos stop switch

The wire chaos stop switch is a large diameter ring which is mounted on the shaft, the ring and shaft was fixed in the casing and move back and forth. In a working position, the wire rod is easy through this ring. However, the wire rod will be fell off the pay –off rack if the wire mess is occurring, that will drive the ring and shaft moving forward, to disconnect the limit switches inside the casing, if soothe processing line will immediately stop. There’re 2 wire mess stop switches

Objective:To protect the processing line when any faults occurring

3.3 Mechanical descaler

The mechanical descaler is welded by section steel, with a hopper on the bottom

The mechanical descaler is according to the principle of working of "reverse bending", two peeling rollers each other vertically mounted wheel rotating rack. Each rotating rack has four peeling rollers, steel wire through the peel rollers, the wire surface oxide softening of bulk, break-ups. two adjacent peeling rollers are locking with opposite thread

There’s a straightening machine was mounted on the each wire outlet site,each straightening machine is consist of two straightening devices whcih vertical to each other for 90 °

Peeling rollers are made of hard alloy materials.Objective:Removal of the oxide on wire surface

3.4 Pressure washing tank

The upper working tank and bottomstorage tank are made of PPU materials, water will be circle flowed into the upper working tank by circulation pump with spray method, the water of upper working tank will overflow back to cycle tank. Circulation pump with a corrosion-resistant units, power 1.1Kw

The exit of the tank with gas cleaning devices, to prevent the water on the wire surface be bring into the bottom tank Objective: removal of loose oxide on the wire surface, to reduce the amount of oxide intoelectrolytic pickling tank, so that to extend the serve life of acid washing liquid

3.5 Preheating water washing tank

The bottomstorage tank and the upper working tank are made of 304 stainless steel l, with built-in steam heating device. Temperature Control: digital display and self control , precision: ±2 °C, heating temperature: > 60 °C. There’s heat preservation cotton around the tanks for prevent heat loss; Tank top with a flip-style cover, that will convenient for operation; Equip with a corrosion-resistant high-temperature circulating pump, power 1.1Kw

Automatic water replenishment, liquid level control

The exit of the tank with gas cleaning devices, to prevent the water on the wire surface be bring into the bottom tank

Objective:preheating wires before boron coating , to improve the efficiency of boron coating

3.6 Boron Coating Tank

The bottomstorage tank and the upper working tank are made of 304 stainless steel l, with built-in steam heating device. Temperature Control: digital display and self control , precision: ±2 °C, heating temperature: > 60 °C. There’s heat preservation cotton around the tanks for prevent heat loss; Tank top with a flip-style cover, that will convenient for operation; Equip with a corrosion-resistant high-temperature circulating pump, power 1.1Kw

Liquid in tank:borax liquid

With automatic waterreplenishment , liquid level control

The exit of the tank with gas cleaning devices, to control the boron coating thickness of steel wire

Objective: Boron coating on the surface of steel wire , that can improve the performance of steel wire drawing

3.7 Drying

The drying box was welded by steel plate and heat preservation bythermal insulationcotton

Heating energy: Electricity

Drying method: Hot air circulation heating, circulation air blower power: 1.5kw, heating temperature:>120°C,

heating power: 30kw

Objective: to completely remove the water on the wires surface

4.Site Condition

4.1 Power: 440V/60HZ

4.2 Water Supply: Water Pressure ≥0.2Mpa, water consumption: about 1 ton per hour, clean water

4.3 Steam supply: Steam pressure ≥0.4Mpa, steam consumption 220Kg/h

4.4Medium pressure air: air pressure≥0.4Mpa, consumption 0.2m³/h

4.5 Low pressure air: air pressure ≥0.05Mpa, consumption120m³/h

5. Electrical technical requirements

5.1Buttons, indication lights will be supplied by Shanghai Second industry company

5.2 Low voltage electric elements will be usedSchneider products, the switches are CM series and DZ series

5.3Electrical cabinet layout and installation shall be conformed to the national standard installation of electrical wiring

5.4Electrical cabinet should have lights for and maintenance power supply, all exposed live parts must be protective measures

5.5 All cables size should be marked on each cables and wire, and request the printed letters is clear and never fade.