CN103990920B - A kind of hardfacing electrode - Google Patents

A kind of hardfacing electrode Download PDF

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Publication number
CN103990920B
CN103990920B CN201410223231.9A CN201410223231A CN103990920B CN 103990920 B CN103990920 B CN 103990920B CN 201410223231 A CN201410223231 A CN 201410223231A CN 103990920 B CN103990920 B CN 103990920B
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China
Prior art keywords
parts
coating
raw
drying
alloying constituent
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Expired - Fee Related
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CN201410223231.9A
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Chinese (zh)
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CN103990920A (en
Inventor
蒲毅智
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Chengdu Hai Xun Scientific And Technical Industry Co Ltd
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Chengdu Hai Xun Scientific And Technical Industry Co Ltd
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Priority to CN201410223231.9A priority Critical patent/CN103990920B/en
Publication of CN103990920A publication Critical patent/CN103990920A/en
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Classifications

    • 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
    • B23K35/02Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261Rods, electrodes, wires
    • B23K35/0266Rods, electrodes, wires flux-cored
    • 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
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/30Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053Fe as the principal constituent
    • B23K35/308Fe as the principal constituent with Cr as next major constituent
    • B23K35/3086Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
    • 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
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/30Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053Fe as the principal constituent
    • B23K35/3093Fe as the principal constituent with other elements as next major constituents
    • 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
    • B23K35/404Coated rods; Coated electrodes

Abstract

The present invention proposes a kind of hardfacing electrode and preparation method thereof, it is related to welding field, the hardfacing electrode includes coating and the core wire being wrapped in coating, and the coating preparing raw material includes coating alloying constituent, and the preparing raw material of coating alloying constituent includes the raw material of following weight parts proportioning:C is 5 8.8 parts, and Cr is 35 57.5 parts, and Mn is 6 10.5 parts, and W is 11.3 50 parts, and Mo is 3.8 12 parts, and B is 5 7.5 parts, and Si is 3.8 6.3 parts.Present invention also offers a kind of preparation method of foregoing wear surfacing welding, the preparation method is mainly weighed including raw material, batch mixing, suppress, dry, low temperature drying and high temperature baking step.The hardfacing electrode obtained according to preparation scheme of the present invention has deposited metal composition uniformity good, and not only hardness is high, residue easy-clear advantage for the overlay cladding of formation.

Description

A kind of hardfacing electrode
Technical field
The present invention relates to welding field, more particularly to a kind of hardfacing electrode and preparation method thereof.
Background technology
The fast development of national economy proposes higher and higher requirement to high-abrasive material with the continuous progress of science and technology, The surface abrasion resistance for improving material has various methods:Such as thermal spraying, ion film plating, plating and built-up welding.These methods respectively have excellent Shortcoming, the shortcoming of preceding several method is thin coating, and required equipment is complicated, and some coating also needs to be processed by complicated postorder. Built-up welding is a kind of conventional reinforcing material wearability and simple, the quick method of repairing wear-resisting spare part.
Traditional hardfacing bar hardness number is difficult more than HRA70.Even WC hardfacing electrode hardness is also very Hardly possible is more than HRA85, and the WC hardfacing electrodes one more than HRA85 are prices high on a small quantity, and two is poor toughness, and three is to structure The repair ability of part is poor.So researching and developing, a kind of hardness number is higher, the lower hardfacing electrode of cost becomes research staff The direction of effort.
The content of the invention
The present invention proposes a kind of hardfacing electrode and preparation method thereof, solves deficiency of the prior art, improves The hardness of surfacing welding, preparation method step of the invention is simple and easy to do, and required equipment is simple, and low production cost.
A kind of hardfacing electrode of the present invention, including coating and the core wire being wrapped in coating, the preparing raw material of the coating Including coating alloying constituent, the preparing raw material of the coating alloying constituent includes the raw material of following weight parts proportioning:C is 5-8.8 parts, Cr It it is 35-57.5 parts, Mn is 6-10.5 parts, W is 11.3-50 parts, Mo is 3.8-12 parts, B is 5-7.5 parts, Si is 3.8-6.3 parts.
Further, C, Cr, Mn, W, Mo, B, Si are powder raw material, and their granularity is all the mesh of 80 mesh -200.
Further, the material of core wire is low-alloy steel.
Further, a diameter of 3.2mm-5mm of core wire, coating external diameter is 2-2.5 with the ratio of electrode size.
Present invention also offers the preparation method of foregoing wear surfacing welding, comprise the following steps:
Step one, coating alloying constituent raw material is weighed and dry method batch mixing:Weigh the raw material of following weight parts proportioning, 5-8.8 B, 3.8-6.3 of Mo, 5-7.5 part of W, 3.8-12 part of Mn, 11.3-50 part of Cr, 6-10.5 part of C, 35-57.5 part of part The Si of part, weighs and finishes rear batch mixing and stir;
Step 2, material by wet type mixing:To the waterglass that 2-9 parts is added in the batch mixing that step one stirs, stir, obtain To coating alloying constituent;
Step 3, the extrusion forming of surfacing welding:Coating alloying constituent described in step 2 is uniformly squeezed in around core wire;
Step 4, room temperature is air-dried, low temperature drying and high temperature dry welding rod:The welding rod that extrusion forming described in step 3 is obtained 2-8h being air-dried at ambient temperature, the welding rod air-dried after finishing being carried out into low temperature drying treatment, drying for the low temperature drying is warm It is 100-150 DEG C to spend, and the low temperature drying time is 2-3h, and the welding rod after low temperature drying is finished carries out high temperature drying and processing, described The drying temperature of high temperature drying is 250-350 DEG C, and high temperature drying time is 2-3h.
It is worth noting that, abovementioned steps three are in concrete application, appropriate water can be added according to actual conditions, made each Coating alloying constituent raw material preferably sticks together.Accordingly, before step 3, understood according to conventional published technology, Extrude in the preparation process of shaping prodrug skin, deoxidier, reducing agent, arc stabilizer etc. can be added with.
Compared with prior art, beneficial effects of the present invention are as follows:
First, deposited metal composition uniformity is good;
Second, the overlay cladding formed using surfacing welding of the present invention not only hardness is high, and other toughness etc. are comprehensive Machine capability, mechanical property are also more outstanding;
Third, surfacing welding low cost of the present invention, making step is simple and easy to do, and required equipment is also relatively simple, is conducive to The popularization and application of business;
Fourth, the processing performance of surfacing welding of the present invention is good, easily ignite, electric arc is smooth, coating fusing is uniform, fly without excessive Splash and easily scarfing cinder;
Fifth, the surfacing welding preparation method that the present invention is provided, in the product drying stage, employs substep gently dried Mode, i.e., successively through room temperature air-dry, low temperature drying, high temperature dry the step of.This method can make moisture in welding rod progressively It is slow to be lost in, the welding rod forming of acquisition, situations such as be less prone to cracking.
Specific embodiment
The technical scheme in the present invention is clearly and completely described below, it is clear that described embodiment is only Several embodiments therein of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area The every other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model of present invention protection Enclose.
Embodiment 1:A kind of hardfacing electrode and preparation method thereof
The hardfacing electrode coating of the present embodiment and the core wire being wrapped in coating, it is characterised in that:The coating system Standby raw material includes coating alloying constituent, and the preparing raw material of the coating alloying constituent includes the raw material of following weight parts proportioning:C is 5 parts, Cr is 35 parts, and Mn is 6 parts, and W is 11.3 parts, and Mo is 3.8 parts, and B is 5 parts, and Si is 3.8 parts.
The preparation scheme of the present embodiment hardfacing electrode is as follows:
1st, coating alloying constituent raw material is weighed and dry method batch mixing:Weigh the raw material of following weight percentage, 5 parts of C, 35 parts Cr, 6 parts of Mn, 11.3 parts of W, 3.8 parts of Mo, 5 parts of B, 3.8 parts of Si, weigh and close foregoing all coatings after finishing Golden agent raw material is mixed together and stirred.C, Cr, Mn, W, Mo, B, Si that the present embodiment is used are powder raw material, they Granularity be 80 mesh.
2nd, material by wet type mixing:To the waterglass that 2 parts are added in the batch mixing that step 1 stirs, stir, obtain coating conjunction Golden agent;
3rd, the extrusion forming of surfacing welding:The uniform coating alloying constituent of step 2 batch mixing is uniformly squeezed in around core wire, Core wire selects low-alloy steel core wire, and a diameter of 3.2mm of core wire, coating external diameter is 2 with the ratio of electrode size.
4th, room temperature is air-dried, low temperature drying and high temperature dry welding rod:The welding rod that extrusion forming described in step 3 is obtained is in room temperature bar 2h is air-dried under part, the welding rod air-dried after finishing is carried out into low temperature drying treatment, the drying temperature of the low temperature drying is 100 DEG C, The low temperature drying time is 2h, and the welding rod after low temperature drying is finished carries out high temperature drying and processing, and drying for the high temperature drying is warm It is 250 DEG C to spend, and high temperature drying time is 2h.High temperature drying obtains the hardfacing electrode of the present embodiment after finishing.
Embodiment 2:A kind of hardfacing electrode and preparation method thereof
The hardfacing electrode of the present embodiment includes coating and the core wire being wrapped in coating, it is characterised in that:The medicine Skin preparing raw material includes coating alloying constituent, and the preparing raw material of the coating alloying constituent includes the raw material of following weight parts proportioning:C is 6.5 parts, Cr is 46 parts, and Mn is 8 parts, and W is 30 parts, and Mo is 8 parts, and B is 6 parts, and Si is 5 parts.
The preparation scheme of the present embodiment hardfacing electrode is as follows:
1st, coating alloying constituent raw material is weighed and batch mixing:Weigh the raw material of following weight percentage, 6.5 parts of C, 46 parts Cr, 8 parts of Mn, 30 parts of W, 8 Mo, 6 parts of B, 5 parts of Si, weigh and mix foregoing all coating alloying constituent raw materials after finishing Together and stir.C, Cr, Mn, W, Mo, B, Si that the present embodiment is used are powder raw material, and their granularity is 140 mesh.
2nd, material by wet type mixing:To the waterglass that 5.5 parts are added in the batch mixing that step 1 stirs, stir, obtain coating Alloying constituent;
3rd, the extrusion forming of surfacing welding:The uniform coating alloying constituent of step 2 batch mixing is uniformly squeezed in around core wire, Core wire selects low carbon steel welding core, and a diameter of 5mm of core wire, coating external diameter is 2.5 with the ratio of electrode size.
4th, room temperature is air-dried, low temperature drying and high temperature dry welding rod:The welding rod that extrusion forming described in step 3 is obtained is in room temperature Under the conditions of air-dry 5h, the welding rod air-dried after finishing is carried out into low temperature drying treatment, the drying temperature of the low temperature drying is 125 DEG C, the low temperature drying time is 2.5h, and the welding rod after low temperature drying is finished carries out high temperature drying and processing, and it is dry that the high temperature is dried Dry temperature is 300 DEG C, and high temperature drying time is 2.5h.High temperature drying obtains the hardfacing electrode of the present embodiment after finishing.
Embodiment 3:A kind of hardfacing electrode and preparation method thereof
The hardfacing electrode of the present embodiment includes coating and the core wire being wrapped in coating, it is characterised in that:The medicine Skin preparing raw material includes coating alloying constituent, and the preparing raw material of the coating alloying constituent includes the raw material of following weight parts proportioning:C is 8.8 parts, Cr is 57.5 parts, and Mn is 10.5 parts, and W is 50 parts, and Mo is 12 parts, and B is 7.5 parts, and Si is 6.3 parts.
The preparation scheme of the present embodiment hardfacing electrode is as follows:
1st, coating alloying constituent raw material is weighed and dry method batch mixing:Weigh the raw material of following weight percentage, 8.8 parts of C, 57.5 parts of Cr, 10.5 parts of Mn, 50 parts of W, 12 parts of Mo, 7.5 parts of B, 6.3 parts of Si, weigh foregoing institute after finishing There is coating alloying constituent raw material to mix together and stir.C, Cr, Mn, W, Mo, B, Si that the present embodiment is used are powdery Raw material, their granularity is 200 mesh.
2nd, material by wet type mixing:To the waterglass that 9 parts are added in the batch mixing that step 1 stirs, stir, obtain coating conjunction Golden agent;
3rd, the extrusion forming of surfacing welding:Coating alloying constituent described in step 2 is uniformly squeezed in around core wire, core wire choosing Use low-alloy steel core wire.
4th, room temperature is air-dried, low temperature drying and high temperature dry welding rod:The welding rod that extrusion forming described in step 3 is obtained is in room temperature Under the conditions of air-dry 8h, the welding rod air-dried after finishing is carried out into low temperature drying treatment, the drying temperature of the low temperature drying is 150 DEG C, the low temperature drying time is 3h, and the welding rod after low temperature drying is finished carries out high temperature drying and processing, the drying of the high temperature drying Temperature is 350 DEG C, and high temperature drying time is 3h.Drying obtains the hardfacing electrode of the present embodiment after finishing.
The hardfacing electrode that above three embodiment is obtained is resistance to common commercially available traditional hardfacing electrode and WC Mill surfacing welding respectively chooses 50 and under equal conditions makees hardness test, and the average HRA values of hardness test result are listed in table 1.
Table 1
Average HRA values
Traditional hardfacing electrode 70
WC hardfacing electrodes 82
Embodiment 1 84
Embodiment 2 86
Embodiment 3 87
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.

Claims (4)

1. a kind of hardfacing electrode, including coating and the core wire being wrapped in coating, it is characterised in that:The coating prepares former Material includes coating alloying constituent, and the preparing raw material of the coating alloying constituent includes the raw material of following weight parts proportioning:C is 5-8.8 parts, Cr is 35-57.5 parts, and Mn is 6-10.5 parts, and W is 11.3-50 parts, and Mo is 3.8-12 parts, and B is 5-7.5 parts, and Si is 3.8-6.3 Part;
The method for preparing the hardfacing electrode comprises the following steps:
Step one, coating alloying constituent raw material is weighed and dry method batch mixing:The raw material of following weight parts proportioning is weighed, 5-8.8 parts B, 3.8-6.3 part of Mo, 5-7.5 part of W, 3.8-12 part of Mn, 11.3-50 part of Cr, 6-10.5 part of C, 35-57.5 part Si, weighs and finishes rear batch mixing and stir;
Step 2, material by wet type mixing:To the waterglass that 2-9 parts is added in the batch mixing that step one stirs, stir, obtain medicine Skin alloying constituent;
Step 3, the extrusion forming of surfacing welding:Coating alloying constituent described in step 2 is uniformly squeezed in around core wire;
Step 4, room temperature is air-dried, low temperature drying and high temperature dry welding rod:The welding rod that extrusion forming described in step 3 is obtained is in room 2-8h is air-dried under the conditions of temperature, the welding rod air-dried after finishing is carried out into low temperature drying treatment, the drying temperature of the low temperature drying is 100-150 DEG C, the low temperature drying time is 2-3h, and the welding rod after low temperature drying is finished carries out high temperature drying and processing, the high temperature The drying temperature of drying is 250-350 DEG C, and high temperature drying time is 2-3h.
2. a kind of hardfacing electrode according to claim 1, it is characterised in that:Described C, Cr, Mn, W, Mo, B, Si are It is powder raw material, its granularity is all the mesh of 80 mesh -200.
3. a kind of hardfacing electrode according to claim 1, it is characterised in that:The material of the core wire is low-alloy Steel.
4. a kind of hardfacing electrode according to claim 1, it is characterised in that:A diameter of 3.2mm- of the core wire 5mm, coating external diameter is 2-2.5 with the ratio of electrode size.
CN201410223231.9A 2014-05-23 2014-05-23 A kind of hardfacing electrode Expired - Fee Related CN103990920B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181133A (en) * 2016-08-05 2016-12-07 雷春生 A kind of preparation method of high-hardness wear-resisting bead welding rod
CN107234364A (en) * 2017-06-12 2017-10-10 合肥欧仕嘉机电设备有限公司 It is a kind of for wear resistance electrode of built-up welding and preparation method thereof
CN110270775B (en) * 2019-04-23 2020-12-29 安徽科技学院 Metal powder core type flux-cored wire for neutron irradiation resistant steel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823030A (en) * 1972-10-18 1974-07-09 Dresser Ind Method of making a bearing system having entrained wear-resistant particles
CN1152491A (en) * 1995-12-18 1997-06-25 邢台神光焊接有限公司 Surfacing welding electrode for roller
CN101402161A (en) * 2008-11-07 2009-04-08 山东大学 Abrasive wear resistant weld deposit flux-cored wire
CN101870046A (en) * 2010-06-03 2010-10-27 辽宁工程技术大学 Impact-resistant and high-wear-resistant surfacing alloy material
CN102498228A (en) * 2009-08-10 2012-06-13 纳米钢公司 Feedstock powder for production of high hardness overlays

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
JP3287865B2 (en) * 1991-09-27 2002-06-04 トヨタ自動車株式会社 Cobalt-based alloy with excellent wear resistance and aggressiveness

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823030A (en) * 1972-10-18 1974-07-09 Dresser Ind Method of making a bearing system having entrained wear-resistant particles
CN1152491A (en) * 1995-12-18 1997-06-25 邢台神光焊接有限公司 Surfacing welding electrode for roller
CN101402161A (en) * 2008-11-07 2009-04-08 山东大学 Abrasive wear resistant weld deposit flux-cored wire
CN102498228A (en) * 2009-08-10 2012-06-13 纳米钢公司 Feedstock powder for production of high hardness overlays
CN101870046A (en) * 2010-06-03 2010-10-27 辽宁工程技术大学 Impact-resistant and high-wear-resistant surfacing alloy material

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