CN102218622B - High-manganese steel surfacing solid-core welding wire and manufacturing method thereof - Google Patents
High-manganese steel surfacing solid-core welding wire and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a high-manganese steel surfacing solid-core welding wire, comprising the following chemical ingredients by mass percentage: 0.8-1.1% of carbon, 0.6-1.0% of silicon, 13-18% of manganese, 1.2-4.0% of chrome, 0.4-0.6% of molybdenum, 0.5-1.0% of vanadium and the balance of iron. A manufacturing method of the welding wire adopts a horizontal continuous casting process of the welding wire and comprises the following steps of smelting, statically arranging, slab withdrawing, secondary cooling, slicing at fixed length, inspecting and packaging, thus obtaining the alloyed solid-core welding wire. The solid-core welding wire has reasonable compounding; the initial hardness of the surfacing layer is increased greatly; the anti-impact performance and the anti-abrasion performance of deposited metal can be improved greatly; and furthermore, all ingredients have small oxidation loss and have small damage on environment. The welding wire is applicable to the surfacing and repairing of important wearable parts of equipment under the working conditions of impact grinding abrasion and high-stress grinding abrasion.
Description
Technical field
The present invention relates to a kind of welding wire and welding wire production technology, particularly a kind of wear-resisting high-manganese steel surfacing solid-core welding wire and manufacture method thereof.
Background technology
At present, the potassium steel built-up welding welding material of domestic general use has welding rod and flux-cored wire, in use mainly has following problem: the one, and in deposited metal, alloying element mainly relies on the coating transition, and the kind of alloying element is restricted; The 2nd, welding deposited metal initial hardness is low, under the thump wear working condition, abrasion resistance properties is poor, the hardfacing weld deposit serious wear, cause the part replacement frequency fast, the significant wastage of metals resources, the 3rd, in the welding use procedure, the melting loss of elements such as manganese are serious, and in welding process, flue dust is larger, especially in manual electric arc welding, can emit a large amount of tobacco during welding, the welding operator ' s health is caused to very big injury; The 4th, because potassium steel alloy work hardening speed is fast, be difficult to manufacture high-manganese steel surfacing solid-core welding wire with traditional forging, rolling, drawing production process.
Summary of the invention
The purpose of this invention is to provide that a kind of deposited metal tensile strength is high, initial hardness is high and wear-resistant, and to environmental nuisance little high-manganese steel surfacing solid-core welding wire.
Another object of the present invention is to provide a kind of method of manufacturing high-manganese steel surfacing solid-core welding wire.
The present invention realizes that the technical scheme that first purpose is taked is:
A kind of high-manganese steel surfacing solid-core welding wire, its chemical composition is by mass percentage: 0.8～1.1%C, 0.6～1.0%Si, 13～18%Mn, 1.2～4.0%Cr, 0.4～0.6%Mo, 0.5～1.0%V, surplus is Fe.
The present invention realizes that the technical scheme that second purpose taked is:
A kind of method of manufacturing above-mentioned high-manganese steel surfacing solid-core welding wire, the method adopts welding wire horizontal continuous-casting technique, comprises the following steps:
(i) melting: the welding wire composition of raw materials by mass percentage, wherein, 0.9～1.2%C, 0.7～1.1%Si, 14～19%Mn, 1.25～4.05%Cr, 0.45～0.65%Mo, 0.55～1.05%V, surplus is Fe, first by filling a prescription Metal Cr, Mo, V and Fe prepare, add in medium frequency induction melting furnace and carry out melting, until completely melted, add again all the other component C, Si and Mn carry out melting, melt liquid in stove is covered and protected simultaneously, coverture is lime and fluorite, its ratio is 4:1, consumption adds by 2% of material quality, now in stove, the temperature of melt liquid remains on 1520～1540 ℃,
(ii) standing: as after melting liquid melts fully, to carry out standingly in smelting furnace, carry out deoxidation treatment simultaneously, deoxidier is selected strong deoxidier aluminium block or aluminium ingot, consumption adds by 0.2% of material quality, and dwell temperature remains on 1500～1510 ℃, time of repose 30～35min;
(iii) throwing: start the horizontal casting Blank drawing machine, melt liquid is along with dummy bar flows to crystallizer, the water inlet of crystallizer is the room temperature running water, 33～38 ℃ of leaving water temperatures, cooling water pressure 0.3～0.4Mpa, melt liquid forms the initial set strand in crystallizer, the initial set strand is pulled out from crystallizer under the effect of dummy bar, the throwing mode adopts and draws-stop-counter pushing away, casting speed now is controlled at 230 mm/min, draw journey 3mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away, dummy bar by the initial set strand from crystallizer is pulled out and is passed through Blank drawing machine, casting speed starts progressively to improve, the highest pulling rate is controlled in 1700 mm/min, when pulling rate reaches 1700 mm/min, the journey of drawing now is 30mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away, in whole process of billet withdrawal, in stove, the melt liquid temperature remains at 1490～1500 ℃,
(iv) secondary is cooling: the initial set strand pulls out after crystallizer that to carry out secondary cooling, intakes as the room temperature running water, and leaving water temperature is 45 ℃～50 ℃, and cooling water pressure is 0.2～0.3Mpa;
(v) fixed length chopping: the solid core welding wire obtained through throwing, after cooling, fixed length chopping after alignment, check, packing, get product.
High-manganese steel surfacing solid-core welding wire provided by the invention, shock resistance and the abrasion resistance properties of deposited metal are greatly improved, be applicable to impact abrasive wear and heavily stressed built-up welding, reparation of pulverizing the crucial wear-resisting spare part of equipping under the abrasive wear working condition, in welding process, automaticity is high, the material deposition efficiency is high, weld fumes is little, environmental pollution is little.The high-manganese steel surfacing solid-core welding wire that adopts the present invention to manufacture, through soldering test, the physics and chemistry of the mechanical property of deposited metal and welding wire chemical composition detects performance and all meets company standard Q/JXY11-2009 specification requirement.For the manufacture of the method for high-manganese steel surfacing solid-core welding wire of the present invention, adopt horizontal continuous-casting technique, the welding wire of direct production alloying, the oxidational losses of various components is little, has improved the utilization rate of various components, and the smooth zero defect of welding wire surface of producing; Minor metallic element Cr, Mo, V etc. have been added in composition of raw materials, greatly increase the initial hardness of overlay cladding, and solved because potassium steel alloy work hardening speed is fast, be difficult to manufacture with manufacturing technique methods such as traditional forging, rolling, drawings the difficult problem of surfacing solid-core welding wire, reduced production cost.
The accompanying drawing explanation
Fig. 1 is high-manganese steel surfacing solid-core welding wire production procedure schematic diagram.
In figure: 1-smelting furnace, 2-crystallizer, 3-Blank drawing machine, 4-secondary cooling apparatus, 5-cutter, 6--high-manganese steel surfacing solid-core welding wire, 7-dummy bar.
The specific embodiment
Embodiment 1: the high-manganese steel surfacing solid-core welding wire that production specification is Ф 4.2mm
(i) melting: the welding wire raw material is prepared burden by mass percentage, wherein, 0.9% C, 0.7% Si, 19%Mn, 4.05%Cr, 0.45Mo%, 0.55%V, surplus is Fe.The specification of smelting furnace 1 is 150kg, 160Kw, the 1000Hz intermediate frequency furnace, first by filling a prescription Metal Cr, Mo, V and Fe prepare, add in medium frequency induction melting furnace 1 and carry out melting, smelting furnace 1 power is increased to 100kw gradually, the about 40min of time remaining, raw material starts fusing, after melting liquid melts fully, add again all the other component C, Si and Mn carry out melting, carry out covering and the protection of melt liquid simultaneously, coverture is lime and fluorite, its ratio is 4:1, consumption adds by 2% of material quality, now in stove, the temperature of melt liquid remains on 1520～1540 ℃,
(ii) standing: as after melting liquid melts fully, to carry out standingly in smelting furnace 1, carry out deoxidation treatment simultaneously, deoxidier is selected strong deoxidier aluminium block or aluminium ingot, consumption adds by 0.2% of material quality, and when standing, temperature remains on 1500～1510 ℃, and time of repose is 30～35min;
(iii) throwing: start horizontal casting Blank drawing machine 3, melt liquid is along with dummy bar 7 flows to crystallizer 2, and the water inlet of crystallizer is the room temperature running water, and leaving water temperature is 33～38 ℃, and cooling water pressure is 0.3～0.4MPa; Melt liquid is at the interior formation initial set of crystallizer 2 strand, and now average casting speed is controlled at 230 mm/min, draws journey 3mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away.Dummy bar 7 by the initial set strand from crystallizer 2 pull out, by Blank drawing machine 3, casting speed is steadily improved, finally controlling pulling rate is 1700 mm/min, now drawing journey is 30mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away, in whole process of billet withdrawal, in stove, the melt liquid temperature remains on 1490～1500 ℃;
(iv) secondary is cooling: the initial set strand pulls out after crystallizer 2 that just to carry out secondary cooling, secondary cooling apparatus 4 is arranged on the place ahead or the rear of Blank drawing machine 3, or front and back all arrange, and intakes as the room temperature running water, leaving water temperature is 45 ℃～50 ℃, and cooling water pressure is 0.2～0.3MPa.
(v) fixed length chopping: the solid core welding wire 6 obtained through throwing, after cooling, need to be through cutter 5 fixed length choppings by specification after alignment, check, packing, obtain finished product welding wire 6 warehouse-ins.
The welding wire that above-described embodiment 1 is manufactured, through electromechanical product quality supervision and inspection station, Gansu Province, detect, the welding wire chemical composition is: 0.87%C, 0.62%Si, 17.2%Mn, 3.89%Cr, 0.41%Mo, 0.53%V, and total impurities 0.04% (being mainly S and P), surplus is Fe.The mechanical property of its deposited metal: tensile strength 768MPa, percentage elongation 37%, impact toughness 152J, initial hardness 34HRC, impact hardness 53HRC.Welding wire surface is smooth, without defects such as burr, cut, corrosion, oxide skins.
Embodiment 2: the high-manganese steel surfacing solid-core welding wire that production specification is Ф 8.0mm
(i) melting: the welding wire raw material is prepared burden by mass percentage, wherein, 1.2% C, 1.1% Si, 14%Mn, 1.25%Cr, 0.65Mo%, 1.05%V, surplus is Fe.The specification of smelting furnace 1 is 150kg, 160Kw, the 1000Hz intermediate frequency furnace, first by filling a prescription Metal Cr, Mo, V and Fe prepare, add in medium frequency induction melting furnace 1 and carry out melting, smelting furnace 1 power is increased to 100kw gradually, the about 40min of time remaining, the welding wire raw material starts fusing, after melting liquid melts fully, add again all the other component C, Si and Mn carry out melting, carry out covering and the protection of melt liquid simultaneously, coverture is lime and fluorite, its ratio is 4:1, consumption adds by 2% of material quality, now in stove, the temperature of melt liquid remains on 1520～1540 ℃,
(ii) standing: as after melting liquid melts fully, to carry out standingly in smelting furnace 1, carry out deoxidation treatment simultaneously, deoxidier is selected strong deoxidier aluminium block or aluminium ingot, consumption adds by 0.2% of material quality, and when standing, temperature remains on 1500～1510 ℃, and time of repose is 30～35min;
(iii) throwing: start horizontal casting Blank drawing machine 2, melt liquid is along with dummy bar 7 flows to crystallizer 2, and the water inlet of crystallizer 2 is the room temperature running water, and leaving water temperature is 33～38 ℃, and cooling water pressure is 0.3～0.4MPa; Melt liquid is at the interior formation initial set of crystallizer 2 strand, and now casting speed is controlled at 230 mm/min, draws journey 3mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away.Dummy bar by the initial set strand from crystallizer 2 pull out, by Blank drawing machine 3, casting speed is steadily improved, finally controlling pulling rate is 1400 mm/min, now drawing journey is 21mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away.In whole process of billet withdrawal, in stove, the melt liquid temperature remains on 1490～1500 ℃;
(iv) secondary is cooling: the initial set strand pulls out after crystallizer 2 that just to carry out secondary cooling, secondary cooling apparatus 4 is arranged on the place ahead or the rear of Blank drawing machine 3, or front and back all arrange, and intakes as the room temperature running water, leaving water temperature is 45 ℃～50 ℃, and cooling water pressure is 0.2～0.3MPa.
(v) fixed length chopping: the solid core welding wire 6 obtained through throwing, after cooling, after alignment by specification requirement through cutter 5 fixed length choppings, check, packing, warehouse-in.
The welding wire that above-described embodiment 2 is manufactured, through electromechanical product quality supervision and inspection station, Gansu Province, detect, the welding wire chemical composition is: 1.03%C, 0.98%Si, 13.4%Mn, 1.23%Cr, 0.59%Mo, 0.99% V, and total impurities 0.039% (being mainly S and P), surplus is Fe.The mechanical property of its deposited metal: tensile strength 759MPa, percentage elongation 39%, impact toughness 158J, initial hardness 35HRC, impact hardness 52HRC.Welding wire surface is smooth, without defects such as burr, cut, corrosion, oxide skins.
Attached: high-manganese steel surfacing solid-core welding wire company standard Q/JXY11-2009 of the present invention
The welding wire chemical composition is: 0.8～1.1% C, 0.6～1.0% Si, 13～18% Mn, 1.2～4.0% Cr, 0.4～0.6 Mo, 0.5～1.0% V, and surplus is Fe;
Deposited metal mechanical property: tensile strength >=750MPa, percentage elongation >=35%, impact toughness >=150J, hardness 32～37HRC, impact hardness 50～55HRC;
The welding wire surface quality: surface should be smooth, without defects such as burr, cut, corrosion, oxide skins.
Claims (3)
1. the manufacture method of a high-manganese steel surfacing solid-core welding wire, is characterized in that, the method adopts welding wire horizontal continuous-casting technique, comprises the following steps:
(i) melting: the welding wire composition of raw materials by mass percentage, wherein, 0.9～1.2%C, 0.7～1.1%Si, 14～19%Mn, 1.25～4.05%Cr, 0.45～0.65%Mo, 0.55～1.05%V, surplus is Fe, first by filling a prescription Metal Cr, Mo, V and Fe prepare, add in medium frequency induction melting furnace and carry out melting, until completely melted, add again all the other component C, Si and Mn carry out melting, melt liquid in stove is covered and protected simultaneously, coverture is lime and fluorite, its ratio is 4:1, consumption adds by 2% of material quality, now in stove, the temperature of melt liquid remains on 1520～1540 ℃,
(ii) standing: as after melting liquid melts fully, to carry out standingly in smelting furnace, carry out deoxidation treatment simultaneously, deoxidier is selected strong deoxidier aluminium block or aluminium ingot, consumption adds by 0.2% of material quality, and dwell temperature remains on 1500～1510 ℃, time of repose 30～35min;
(iii) throwing: start the horizontal casting Blank drawing machine, melt liquid is along with dummy bar flows to crystallizer, the water inlet of crystallizer is the room temperature running water, 33～38 ℃ of leaving water temperatures, cooling water pressure 0.3～0.4Mpa, melt liquid forms the initial set strand in crystallizer, the initial set strand is pulled out from crystallizer under the effect of dummy bar, the throwing mode adopts and draws-stop-counter pushing away, casting speed now is controlled at 230 mm/min, draw journey 3mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away, dummy bar by the initial set strand from crystallizer is pulled out and is passed through Blank drawing machine, casting speed starts progressively to improve, the highest pulling rate is controlled in 1700 mm/min, when pulling rate reaches 1700 mm/min, the journey of drawing now is 30mm/ time, time of mid-stop 0.2s, the anti-time 0.1s that pushes away, in whole process of billet withdrawal, in stove, the melt liquid temperature remains at 1490～1500 ℃,
(iv) secondary is cooling: the initial set strand pulls out after crystallizer that to carry out secondary cooling, intakes as the room temperature running water, and leaving water temperature is 45 ℃～50 ℃, and cooling water pressure is 0.2～0.3Mpa;
(v) fixed length chopping: the solid core welding wire obtained through throwing, after cooling, fixed length chopping after alignment, check, packing, get product;
The solid core welding wire obtained according to above-mentioned steps, its chemical composition is by mass percentage: 0.8～1.1%C, 0.6～1.0%Si, 13～18%Mn, 1.2～4.0%Cr, 0.4～0.6%Mo, 0.5～1.0%V, surplus is Fe.
2. the manufacture method of high-manganese steel surfacing solid-core welding wire according to claim 1, is characterized in that, in described throwing step, when manufacturing the high-manganese steel surfacing solid-core welding wire that specification is Ф 3.2～5mm, the highest pulling rate is 1700 mm/min.
3. the manufacture method of high-manganese steel surfacing solid-core welding wire according to claim 1, is characterized in that, in described throwing step, when manufacturing the high-manganese steel surfacing solid-core welding wire that specification is Ф 5.0～8.0mm, the highest pulling rate is 1400 mm/min.
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| CN111958193A (en) * | 2020-09-14 | 2020-11-20 | 北京北冶功能材料有限公司 | Preparation method of alloy wire difficult to deform |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431081A (en) * | 2003-01-25 | 2003-07-23 | 张汉涛 | Electric welding core wire of high manganese steel wire made by forging rolling process |
| CN1557603A (en) * | 2004-01-18 | 2004-12-29 | 上海宝山石洞口设备修造厂 | High hardness welding wire |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160619A (en) * | 1996-03-25 | 1997-10-01 | 吕家琈 | Bead welding wire for welding hot-work die |
| CN1078512C (en) * | 1998-07-14 | 2002-01-30 | 王玉彬 | Special flux-cored wirecord for repairing continuous-casting roller |
| JP4954123B2 (en) * | 2008-02-28 | 2012-06-13 | Ｊｆｅスチール株式会社 | Electroslag welding method with excellent weld metal toughness |
| CN101407000A (en) * | 2008-11-18 | 2009-04-15 | 成都新大洋焊接材料有限责任公司 | Low-alloy heat-resistant steel submerged arc welding wire |
-
2011
- 2011-06-03 CN CN 201110148561 patent/CN102218622B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431081A (en) * | 2003-01-25 | 2003-07-23 | 张汉涛 | Electric welding core wire of high manganese steel wire made by forging rolling process |
| CN1557603A (en) * | 2004-01-18 | 2004-12-29 | 上海宝山石洞口设备修造厂 | High hardness welding wire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111958193A (en) * | 2020-09-14 | 2020-11-20 | 北京北冶功能材料有限公司 | Preparation method of alloy wire difficult to deform |
| CN111958193B (en) * | 2020-09-14 | 2022-05-24 | 北京北冶功能材料有限公司 | Preparation method of alloy wire difficult to deform |
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Address after: 730030 Jinchang North Road, Chengguan District, Lanzhou, Gansu 208 Patentee after: Gansu Mechanical Science Research Institute Limited liability company Address before: 730030 Jinchang North Road, Chengguan District, Lanzhou, Gansu 208 Patentee before: Gansu Machinery & Science Inst.t |