CN2095720U - Continuous pretreatment device for wire material surface - Google Patents

Abstract

The utility model relates to a continuous pretreatment device for wire material surfaces, which is used for continuous phosphor removal and coating of the surface of metal wire material, and the utility model belongs to the field of metallurgy. The existing surface phosphor removal adopts chemical phosphor removal or mechanical phosphor removal; the production cost is high, the environmental pollution is serious, and the phosphor removal quality is hard to control. The utility model is characterized in that a mechanical phosphor removal device, a flushing device, an electrolysis acid flushing device, a washing groove, a coating groove and a drawbench are arranged on the back of a paying out machine, and the pretreatment processes of phosphor removal, coating, wire drawing, etc. are combined into a continuous integral production device. The utility model has the advantages of high automatization, low cost, clean surface phosphor removal, basic no environmental pollution, less equipment investment and small occupation area.

Description

Continuous pretreatment device for wire material surface

The continuous pretreatment unit of a kind of wire surface is used for the continuous de-scaling of metal wire material surface, belongs to field of metallurgy.

At present, domestic chemical method and Mechanical Method are generally adopted in the metal wire material surface de-scaling.The chemical method of common use is that the whole wire rod of tying is immersed in de-scaling in the dilute sulfuric acid, and the Mechanical Method dephosphorization is removed surperficial firecoat with roll-type machinery with metal wire rod alternating bending distortion.

The deficiencies in the prior art part is: the investment of chemical method de-scaling main frame and corollary equipment is big, operating environment is poor, spent acid and exhausted air quantity is big, the control of de-scaling difficult quality, easily produce overpickling or handle unclean.Reasons such as Mechanical Method de-scaling metal material surface is coarse, electrostatic interaction and chemistry adhesion, the remaining squama amount in surface is bigger, is generally 0.84～1.22/kg.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part and provides a kind of wire surface continuous pretreatment unit, it is characterized in that: descaling bath is by hopper 4, bracket 5 and cathodic pickling cell body 6 are formed, cathodic pickling cell body 6 is by end face shrouding 7, pole plate 8, feed tube 9, leakage pipe 10 and pickling pipe 11 are formed, pickling pipe 11 top end openings, each cathodic pickling cell body 6 of cathodic pickling groove is with a polarity, pole plate 8 adopts opposed polarity, can be male or female, this device can be clean with the metal wire material surface de-scaling, improve work situation, investment and floor space are little.

Purpose of the present invention can reach by following measure: the metal wire rod after original mechanical descaling is become continuous pretreatment unit through flushed channel, cathodic pickling groove, rinse bath with painted groove, metal wire rod is come out → mechanical descaling → flushing → cathodic pickling → clean → be coated with lubricant → drawing → unwrapping wire by pay off rack.

Fig. 1 is roller arrangements figure, and the roller 2 of mechanical descaling device is 10～20, roller footpath D50～100MM, and roll spacing t60～80MM, roller are divided into 2～4 groups, and each organizes roller axis space interlaced arrangement each other.Because admission machine parts power a little for one of metal wire rod, with several groups of bending rolls metal wire rod is carried out alternating bending, and the wire rod surface fibre is enough extended, and reaches the de-scaling purpose, and metal wire rod is also had the aligning effect.Each organizes roller axis space interlaced arrangement each other, because metal wire rod by the different roller in locus, has not only been removed the firecoat of metal wire material surface, also the strain that produces after the roller alternating bending can be superposeed mutually, finally make full section obtain uniform plastic elongation, make the wire rod aligning.

D is relevant with diameter, the strength degree of metal wire rod in the roller footpath, if diameter is certain, the high more then roller of strength degree footpath is more little, and because of wire rod is hard more, distortion is just difficult more, make its surface fiber obtain stretching and must add larger radius of curvature, is generally 50～100mm.T is more little in roll spacing, and metal wire rod flexural deformation is big more, and scale removal effect is good more, but working roll is stressed big more, is generally 60～80mm.The roller number helps improving the de-scaling quality more, but can increase the sclerosis of metal wire rod and the traction power of take-up, and selection principle is under the prerequisite that guarantees the de-scaling quality, and the roller number is few as far as possible, is generally 10～20.

Fig. 2 is the flusher structural representation, and flushing can make the loose firecoat of remained on surface and dust remove to metal wire rod 1 through water, to improve the quality of next procedure.One nozzle 3 is arranged at the cell body bottom, and angle α is 30～50 ° between metal wire rod and nozzle, makes metal wire rod force flushing in adverse current, improves rinsing quality.

Fig. 3 is a cathodic pickling groove structural representation, is made up of hopper 4, bracket 5 and cathodic pickling cell body 6, and hopper 4 usefulness sheet metals are welded the inner bushing ring epoxy resins.Bracket 5 is made with epoxy resin by the channel-section steel lining, plays the effect of supporting cathodic pickling cell body 6.Fig. 4 is cathodic pickling trough body structure figure, Fig. 5 is a cathodic pickling cell body A-A profile, cathodic pickling cell body 6 is made up of end face shrouding 7, pole plate 8, feed tube 9, leakage pipe 10 and pickling pipe 11, metal wire rod 1 is by cathodic pickling cell body center, non-contact electrode, cathodic pickling cell body 6 has two compositions at least, and each pickling cell body 6 has only a polarity.Pickling pipe 11 materials are hard polvinyl choride pipe, and top end opening can be convenient to connect metal wire rod 1, and pole plate 8 general employings are being hanged down not diffluent metal material under the sour low-voltage, and commonly used is Plante-type plate inexpensive, easy purchase.In order to improve pickling speed and pickling quality, adopt the positive and negative utmost point to replace cathodic pickling, when the metal wire rod walking is in the descaling bath of anode the time at pole plate, metal wire rod is a negative electrode, because the electrode reflection, the hydrogen that metal wire rod is separated out plays reduction and mechanical stripping effect to its surperficial oxide; Otherwise when pole plate was negative electrode, metal wire rod was an anode, and the removal of surperficial firecoat is by means of the electrochemistry of metal and chemolysis, and the bubble that wire surface is separated out carries out the mechanical stripping firecoat.In the cathodic pickling process, pole plate alternately for the positive and negative utmost point, can be avoided " hydrogen embrittlement ", can not produce overpickling again.Cathodic pickling cell body 6 in the cathodic pickling groove has two compositions at least, and a pole plate is an anode, and one be negative electrode, and each cathodic pickling cell body 6 has only a polarity, crossfire not mutually between the interior electrolytic solution of cell body.Fig. 6 is a cathodic pickling slot number schematic diagram, polarity of each pickling cell body band in the cathodic pickling groove, pole plate 8 adopts different polarity, but the polarity positive and negative utmost point that is pole plate replaces, negative electrode of also several anodes, decide by cathodic pickling requirement quality, the anodic acid pickling cell body is more than the negative electrode cell body, and the cathodic pickling quality is good.

Sulfuric acid concentration is 150～200g/ liter, excessive overpickling and the hydrogen embrittlement of easily causing of concentration, and concentration is too small, and pickling is insufficient.The pickling time is generally about 10～15 seconds, for guaranteeing cathodic pickling quality, the Fe in the pickle ^{+ 2}Concentration should be controlled at below the 250g/ liter, and pickling temperature is less than 60 ℃.

Metal wire rod after the cathodic pickling is through water washing device, and rinse water is a hot water, and its effect is residual acid solution and the foreign material that can remove on the metal wire rod, and metal wire rod is preheating to 70～80 ℃, for road coating operation is ready down.

Fig. 7 is the painted groove structure chart, and painted groove is made up of liquid suction pipe 12, silk rolling mould 13, silk rolling groove 14, feed tube 15, liquid storage tank 16, metal wire rod 1 surface is coated with lubricant is for the drawing speed that improves metal wire rod, reduces pulling capacity.

General coating is a borax, is example to be coated with boron, is coated with general 2～4 seconds of boron time, and solution temperature is controlled at about 70 ℃, and borax soln concentration is 250～350 grams per liters, and its pH value is between 9.0～9.4.

So far, metal wire material surface mechanical descaling, chemical de-scaling and coating are all finished, according to the processing needs wire drawing machine can be set, and the metal wire rod of coating lubricant is entered drawing-die carry out the prestretching preliminary working, then by the admission machine take-up; Can certainly be without wire drawing die, the metal wire rod that surface preparation is good is directly by the admission machine take-up.

If the good metal wire rod of preliminary treatment is without wire drawing die, the retractable linear velocity is then basic identical; Then according to its draft retractable linear velocity that converts, general take-up speed is 80～100 meters/minute through the metal wire rod of wire drawing die.

Characteristics of the present utility model are: with metal wire material surface mechanical descaling, cathodic pickling de-scaling, be coated with preprocessing process such as lubricant, wire drawing and be combined into continuous integrated production equipment.

Fig. 1 roller arrangements figure

Fig. 2 flusher structural representation

Fig. 3 cathodic pickling groove structural representation

Fig. 4 cathodic pickling trough body structure figure

Fig. 5 cathodic pickling cell body A-A profile

Fig. 6 cathodic pickling cell body polarity schematic diagram

Fig. 7 painted groove structure chart

Below in conjunction with embodiment the utility model is further set forth: the general diameter of high-speed rod is 5.5～6.5mm, and the steel wire that with the diameter is 6.0mm is an example, and the intensity of steel wire limit is 1500N/mm ²,, two bundle steel wires are welded from beginning to end, to guarantee continuous production with two groups of pay off racks.Steel wire is through the roller of mechanical descaling device, roller footpath D is 80mm, several 13 of roller, and roll spacing t is 75mm, roller is divided into three groups, as shown in Figure 1, three groups of roller axis are the space interlaced arrangement each other, and first group of roller is 6, roll axis is level, 4 roll axis of second group of roller and first group of roll axis are at 45,3 on the 3rd group of roller, and roll axis becomes 135 ° with first group of roll axis.Steel wire is gone into water flushing device through three groups of rollers are laggard, and the steel wire trend is opposite with water flushing direction, guarantees the quality of forcing flushing, 1.2 meters of effective length of flush.Steel wire enters the cathodic pickling groove immediately, pole plate is made with stereotype, its polarity arrangement as shown in Figure 6,1-3 is the anode cell body, the 4th is the negative electrode cell body, a cathodic pickling cell body has only a polarity, and the sulfuric acid solution in each cathodic pickling cell body is crossfire not mutually, and each cathodic pickling cell body has a style of one's own, sulfuric acid concentration 180 grams per liters, the pickling time is 10 seconds, and steel wire pickling time in the anode cell body is 7.5 seconds, and the pickling time is 2.5 seconds in the negative electrode cell body.15 meters of descaling bath length overalls, 50 amperes of current strength, anodic current density are 6A/dm ², cathode-current density is 2A/dm ², the Fe in the pickle ^{+ 2}Concentration is controlled at below 200 grams per liters, and pickling temperature is less than 45 ℃.Place 4 pickling cell bodies at a big hopper, provide the circulation acid solution with a sour pump.Remove steel wire behind the surperficial firecoat through hot cleaner, steel wire is preheating to about 70 ℃, then to being coated with the boron groove, borax soln concentration is 300 grams per liters, pH value is 9.3, and the borax soln temperature is coated with 2.3 seconds boron time about 70 ℃, steel wire walking line speed is 90 meters/minute, is coated with 3.5 meters of boron slot lengths.The steel wire that coats borax carries out prestretching, adopts 550 single-head wire drawers, and pulling capacity is about 100 kilograms, draft about 20%.Enter admission machine at last, 90 meters/minute of take-up speeds.

The utility model advantage is:

1, metal wire material surface de-scaling, be coated with lubricant, wire drawing is consecutive production, automaticity height, labor productivity height, production cost are low;

2, the metal wire material surface de-scaling is clean;

3, basic non-environmental-pollution;

4, equipment investment is few, floor space is little.

Claims (2)

1, the continuous pretreatment unit of a kind of wire surface, form by flushed channel, descaling bath, rinse bath, painted groove, it is characterized in that: descaling bath is made up of hopper 4, bracket 5 and cathodic pickling cell body 6, cathodic pickling cell body 6 is made up of end face shrouding 7, pole plate 8, feed tube 9, leakage pipe 10 and pickling pipe 11, pickling pipe 11 top end openings, each cathodic pickling cell body 6 in the descaling bath is with a polarity, and pole plate 8 adopts opposed polarity, can be male or female.

2, the continuous pretreatment unit of wire surface according to claim 1 is characterized in that: painted groove is made up of liquid suction pipe 12, silk rolling mould 13, silk rolling groove 14, feed tube 15 and liquid storage tank 16.

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