CN104625490A - Production technology for welding wire for ship - Google Patents

Production technology for welding wire for ship Download PDF

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Publication number
CN104625490A
CN104625490A CN201510000086.2A CN201510000086A CN104625490A CN 104625490 A CN104625490 A CN 104625490A CN 201510000086 A CN201510000086 A CN 201510000086A CN 104625490 A CN104625490 A CN 104625490A
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CN
China
Prior art keywords
welding wire
production technology
wire
acid pickling
pressure water
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Pending
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CN201510000086.2A
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Chinese (zh)
Inventor
杜晓良
吴银龙
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JIANGSU TIANYE COMPOSITES CO Ltd
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JIANGSU TIANYE COMPOSITES CO Ltd
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Priority to CN201510000086.2A priority Critical patent/CN104625490A/en
Publication of CN104625490A publication Critical patent/CN104625490A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/40Making wire or rods for soldering or welding

Abstract

The invention relates to a production technology for a welding wire for a ship. The production technology for the welding wire for the ship is characterized in that the welding wire comprises 0.02-0.1% of C, 2-4% of Mn, 2-4% of Ni, 0.5-1% of Mo, 0.5-0.8% of Si, 0-0.5% of Cu, 0-1.2% of Cr, 0-0.12% of V and 0-0.05% of Ti. The production technology comprises the steps of vacuum melting, forging, steel rolling, wire rod hot rolling, mechanical dust removal, chlorohydric acid pickling, neutral water washing, high-pressure water cleaning, alkali neutralization, boronizing, saponification with liquid soap, drying, primary cold drawing, recrystallization annealing, chlorohydric acid pickling, neutral water washing, high-pressure water cleaning, alkali neutralization, boronizing, saponification with liquid soap, drying, secondary cold drawing, chlorohydric acid pickling, neutral water washing, high-pressure water cleaning, alkali neutralization, saponification with liquid soap, brilliant polishing and drawing and rust-proof liquid coating.

Description

The production technology of boats and ships welding wire
The application is divisional application, the application number of original application: 2012104987530, denomination of invention: one not preheating, not copper facing boats and ships low-alloy steel automatic welding wire and production technology, the applying date: 2012-11-30.
Technical field
The present invention relates to the preparation field of automatic welding wire, particularly one not preheating, not copper facing boats and ships low-alloy steel automatic welding wire and production technology thereof.
Background technology
Low-alloy high-strength steel has good weldability, excellent formability and lower manufacturing cost, is therefore widely used in the fields such as pressure vessel, vehicle, bridge, building, engineering machinery, mining machinery, textile machine, ocean structure, boats and ships, electric power, petrochemical industry, war products and Aero-Space.Along with the raising of steel alloying element content, intensity rank and Welding Structure constraint (restraint) degree, its tendency of hardenability obviously increases, and welding cold cracking has become low-alloy high-strength steel and welded one of subject matter faced.
Usually adopt weld preheating in production, the method for post weld heat treatment produces to avoid weld crack, while bringing the series of problems such as the increase of complex manufacturing, production cost, production efficiency reduction and working environment deterioration, also can increase the softening tendency in welding heat affected zone.
Modern Ships structure adopts high-intensity high-tenacity hull structural steel in a large number, and traditional high intensity for ship steel all belongs to quenched and tempered steel, and this kind of steel generally all needs preheating to prevent the generation of cold crack when welding.A kind of not preheating, not copper facing boats and ships low-alloy automatic welding wire and production technology is provided to be the technical barriers of this area.
Summary of the invention
Technical problem to be solved by this invention is to provide one not preheating, not copper facing boats and ships low-alloy high-strength ductile steel automatic welding wire and production technology thereof.
For solving the problems of the technologies described above, the invention provides one not preheating, not copper facing boats and ships low-alloy steel automatic welding wire, its chemical analysis comprises: C 0.02-0.1%, Mn 2-4%, Ni 2-4%, Mo 0.5-1%, Si 0.5-0.8%, Cu 0-0.5%, Cr 0-1.2%, V 0-0.12%, Ti 0-0.05%; This gage of wire drawing is Ф 4.0mm to Ф 1.0mm.
The production technology of above-mentioned not preheating, not copper facing boats and ships low-alloy steel automatic welding wire, in turn includes the following steps:
Vacuum melting, forging, steel rolling, gren rod, mechanical derusting, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizes, borax treatment, soap lye saponification, dries, first time cold-drawn, recrystallization annealing, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizes, borax treatment, soap lye saponification, dry, second time cold-drawn, chlorohydric acid pickling, neutral washing, high pressure water cleaning-, alkali neutralizes, soap lye saponification, brilliant polish drawing, is coated with aqueous rust preventive.
In described twice chlorohydric acid pickling step, steel wire is put into the hydrochloric acid solution of 50%, soak under normal temperature after 20-30 minute and take out, during taking-up, Steel Wire Surface must not have hole, control FeCl2 content≤100 g/l in immersion process.
In described twice alkali neutralization procedure, alkaline solution is the mixed solution of NaOH, NaCO3, NaHCO3, wherein, NaOH content is 20-30 g/l, NaCO3 content is 30-40 g/l, NaHCO3 content is 25-35 g/l, in alkali N-process, controlling the pH value of solution is 8-11, in and time 2-5 minute.
In described twice borax treatment step, in boration solution, the content of borax is 150-250 g/l, and during steel wire boronising process, control temperature 75-90 DEG C, process after 5-10 minute and take out, during taking-up, Steel Wire Surface is even black gray expandable.
In described three soap lye saponification step, in soap lye, the content of soap flakes is 200-300 g/l, during saponification, controls pH value and is greater than 8, temperature 80-90 DEG C.
Described first time cold-drawn step is rough pulling out, be Ф 5.4mm by steel wire diameter drawing, choice for use DYH-G4, DYH-G72 Dry-powder Lubricant in thick drawing process, this lubricant has good heat resistance, noncoking, good lubricating film can be formed in the Steel Wire Surface of first time drawing, ensure the excellent surface quality of steel wire, and after annealing Steel Wire Surface clean, bright and clean, do not form collection carbon, convenient cleaning.
In described recrystallization annealing step, by steel wire heating to 690 ± 10 DEG C, keep slowly cooling to less than 150 DEG C after 1.5 hours, cool time is 16-23 hour.
Described second time cold-drawn step is middle drawing, be Ф 4.15mm, Ф 3.35mm, Ф 2.6mm, Ф 2.2mm, Ф 1.8mm, Ф 1.4mm, Ф 1.2mm by the steel wire drawing of Ф 5.4mm, these seven kinds of diameter wire are the corresponding finished product preparing Ф 4.0mm, Ф 3.2mm, Ф 2.5mm, Ф 2.0mm, Ф 1.6mm, Ф 1.2mm, Ф 1.0mm respectively, DYH-G10, DYH-G82 Dry-powder Lubricant is selected in middle drawing process, this lubricant has good greasy property, after drawing, Steel Wire Surface is smooth, Steel Wire Surface lubricating film is soluble in water, is convenient to the production of illumi yarn.
In described brilliant polish drawing, the steel wire of Ф 4.15mm, Ф 3.35mm, Ф 2.6mm, Ф 2.2mm, Ф 1.8mm, Ф 1.4mm, Ф 1.2mm is drawn to respectively the finished product of Ф 4.0mm, Ф 3.2mm, Ф 2.5mm, Ф 2.0mm, Ф 1.6mm, Ф 1.2mm, Ф 1.0mm, DYH-2, DYH-5 type lubricant is selected in drawing, this lubricant has strong adhesion, high lubricating effect, anti-extrusion, anti-oxidant, use rear surface is even, smooth, fineness high.
In described painting aqueous rust preventive step, rust inhibiting solution is the mixed solution of natrium nitrosum, G & W, and wherein, natrium nitrosum is 5-12 g/l, glycerine 10-12 g/l, and surplus is water, can pack warehouse-in after aqueous rust preventive is painted with.
Technique effect of the present invention: (1) not preheating of the present invention, not copper facing boats and ships low-alloy automatic welding wire can not just can weld when high-strength and high-toughness steel welds in preheating, see embodiment 5, the welding performance data of this welding wire several high-strength and high-toughness steel under not preheat condition illustrate that this welding wire can not weld in preheating, and welding effect is good, preheated weld can not avoid the generation of cold crack in the welding of Modern Ships structure, and can production technology be simplified in welding process, reduce production cost, speed production efficiency, and only need be coated with aqueous rust preventive during the storage of this automatic welding wire, need not be preserved by copper facing, reduce production cost equally, and cupric impurity can not be mixed into and affect welding effect, (2) welding material strict chemical analysis controlling welding material in batching, smelting process, by process optimization, adopts furnace outer refining technology, effectively reduces the impurity contents such as S, P, O, N, guarantee the cleanliness factor of welding material.
Detailed description of the invention
Embodiment 1
The not preheating of the present embodiment, not copper facing boats and ships low-alloy steel automatic welding wire, its chemical analysis comprises: C 0.02%, Mn 2%, Ni 4%, Mo 0.5%, Si 0.5%, Cu 0.2%, Cr 0.5%, V 0.1%, Ti 0.01%; This gage of wire drawing is Ф 4.0mm to Ф 1.0mm.
Embodiment 2
The not preheating of the present embodiment, not copper facing boats and ships low-alloy steel automatic welding wire, its chemical analysis comprises: C 0.05%, Mn 3%, Ni 3%, Mo 0.7%, Si 0.6%, Cu 0.3%, Cr 0.6%, V 0.06%, Ti 0.03%; This gage of wire drawing is Ф 4.0mm to Ф 1.0mm
Embodiment 3
The not preheating of the present embodiment, not copper facing boats and ships low-alloy steel automatic welding wire, its chemical analysis comprises: C 0.1%, Mn 4%, Ni 2%, Mo 1%, Si 0.8%, Cu 0.5%, Cr 1.2%, V 0.12%, Ti 0.05%; This gage of wire drawing is Ф 4.0mm to Ф 1.0mm.
Embodiment 4
Not preheating described in above-described embodiment 1-3, the not copper facing boats and ships production technology of low-alloy steel automatic welding wire, in turn include the following steps:
Vacuum melting, forging, steel rolling, gren rod, mechanical derusting, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizes, borax treatment, soap lye saponification, dries, first time cold-drawn, recrystallization annealing, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizes, borax treatment, soap lye saponification, dry, second time cold-drawn, chlorohydric acid pickling, neutral washing, high pressure water cleaning-, alkali neutralizes, soap lye saponification, brilliant polish drawing, is coated with aqueous rust preventive.
1, chlorohydric acid pickling: steel wire is put into the hydrochloric acid solution of 50%, soak under normal temperature after 20-30 minute and take out, during taking-up, Steel Wire Surface must not have hole, control FeCl2 content≤100 g/l in immersion process.In table 1.
Table 1:
2, alkali neutralization: alkaline solution is the mixed solution of NaOH, NaCO3, NaHCO3, and wherein, NaOH content is 20-30 g/l, NaCO3 content is 30-40 g/l, NaHCO3 content is 25-35 g/l, in alkali N-process, controlling the pH value of solution is 8-11, in and time 2-5 minute.In table 2.
Table 2
3, borax treatment: in boration solution, the content of borax is 150-250 g/l, during steel wire boronising process, control temperature 75-90 DEG C, process after 5-10 minute and take out, during taking-up, Steel Wire Surface is even black gray expandable.In table 3.
Table 3
Borax Temperature Time Surface
150-250 g/l 75-90℃ 5-10 divides Black gray expandable is even
4, soap lye saponification: in soap lye, the content of soap flakes is 200-300 g/l, during saponification, controls pH value and is greater than 8, temperature 80-90 DEG C.In table 4.
Table 4
5, cold-drawing technology:
(1) first time cold-drawn: first time cold-drawn is rough pulling out, be Ф 5.4mm by steel wire diameter drawing, choice for use DYH-G4, DYH-G72 Dry-powder Lubricant in thick drawing process, this lubricant has good heat resistance, noncoking, good lubricating film can be formed in the Steel Wire Surface of first time drawing, ensure the excellent surface quality of steel wire, and after annealing Steel Wire Surface clean, bright and clean, do not form collection carbon, convenient cleaning.
(2) in described recrystallization annealing step, by steel wire heating to 690 ± 10 DEG C, keep slowly cooling to less than 150 DEG C after 1.5 hours, cool time is 16-23 hour.
(3) second time cold-drawn: second time cold-drawn is middle drawing, be Ф 4.15mm by the steel wire drawing of Ф 5.4mm, Ф 3.35mm, Ф 2.6mm, Ф 2.2mm, Ф 1.8mm, Ф 1.4mm, Ф 1.2mm, these seven kinds of diameter wire are corresponding preparation Ф 4.0mm respectively, Ф 3.2mm, Ф 2.5mm, Ф 2.0mm, Ф 1.6mm, Ф 1.2mm, the finished product of Ф 1.0mm, DYH-G10 is selected in middle drawing process, DYH-G82 Dry-powder Lubricant, this lubricant has good greasy property, after drawing, Steel Wire Surface is smooth, Steel Wire Surface lubricating film is soluble in water, be convenient to the production of illumi yarn.
(4) brilliant polish drawing: the finished product steel wire of Ф 4.15mm, Ф 3.35mm, Ф 2.6mm, Ф 2.2mm, Ф 1.8mm, Ф 1.4mm, Ф 1.2mm being drawn to respectively Ф 4.0mm, Ф 3.2mm, Ф 2.5mm, Ф 2.0mm, Ф 1.6mm, Ф 1.2mm, Ф 1.0mm, DYH-2, DYH-5 type lubricant is selected in drawing, this lubricant has strong adhesion, high lubricating effect, anti-extrusion, anti-oxidant, use rear surface is even, smooth, fineness high.
6, aqueous rust preventive is coated with: rust inhibiting solution is the mixed solution of natrium nitrosum, G & W, and wherein, natrium nitrosum is 5-12 g/l, glycerine 10-12 g/l, and surplus is water, can pack warehouse-in after aqueous rust preventive is painted with.
Embodiment 5
Not welding wire described in above-described embodiment, when preheated weld yield strength is not 790MPa, 890MPa, 960MPa, 1100MPa high-strength steel, deposited metal performance indications are as table 5.
Table 5
Wherein Rm is tensile strength, R p0.2for yield strength, A is elongation after fracture, A kv-50 DEG Cfor-50 DEG C of impact absorbing energy, A kv-40 DEG Cfor-40 DEG C of impact absorbing energy.

Claims (1)

1. a production technology for boats and ships welding wire, is characterized in that: the chemical analysis of this welding wire comprises: C 0.02-0.1%, Mn 2-4%, Ni 2-4%, Mo 0.5-1%, Si 0.5-0.8%, Cu 0-0.5%, Cr 0-1.2%, V 0-0.12%, Ti 0-0.05%; This gage of wire drawing is Ф 4.0mm to Ф 1.0mm;
Described production technology in turn includes the following steps:
Vacuum melting, forging, steel rolling, gren rod, mechanical derusting, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizes, borax treatment, soap lye saponification, dries, first time cold-drawn, recrystallization annealing, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizes, borax treatment, soap lye saponification, dry, second time cold-drawn, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizes, soap lye saponification, brilliant polish drawing, is coated with aqueous rust preventive;
In described painting aqueous rust preventive step, rust inhibiting solution is the mixed solution of natrium nitrosum, G & W, and wherein, natrium nitrosum is 5-12 g/l, glycerine 10-12 g/l, and surplus is water.
CN201510000086.2A 2012-11-30 2012-11-30 Production technology for welding wire for ship Pending CN104625490A (en)

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CN107214441A (en) * 2017-06-23 2017-09-29 天津市永昌焊丝有限公司 One kind is without copper plating soldering wire production technology

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Publication number Priority date Publication date Assignee Title
CN107214441A (en) * 2017-06-23 2017-09-29 天津市永昌焊丝有限公司 One kind is without copper plating soldering wire production technology

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