CN104195362B - A kind of high boron wear-resisting erosion alloy preparation method - Google Patents

A kind of high boron wear-resisting erosion alloy preparation method Download PDF

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CN104195362B
CN104195362B CN201410403769.8A CN201410403769A CN104195362B CN 104195362 B CN104195362 B CN 104195362B CN 201410403769 A CN201410403769 A CN 201410403769A CN 104195362 B CN104195362 B CN 104195362B
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boron
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laser
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CN104195362A (en
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符寒光
蔡凯
蒋志强
马胜强
符定梅
邢建东
文振华
王振
冯宪章
冯锡兰
刘建伟
魏永强
刘元朋
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Beijing University of Technology
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Abstract

A kind of high boron wear-resisting erosion alloy preparation method, belongs to corrosive wear of zinc solution field of material technology.It is first that 140 200 mesh, mass fraction are respectively 45~50% ferro-boron powder, 14~16% ferrochrome powder, 3~5% molybdenum-iron powder, 4~4.6% pure nickel powder, 1.5~2.5%WC powder and 25~30% straight iron powder mix homogeneously by powder diameter scope, utilize optical fiber laser, use synchronous powder feeding system method, stainless steel base material carries out laser melting coating, surface flawless can be obtained, be mingled with the high boron wear-resisting erosion Alloy by Laser cladding layer with pore and surfacing.

Description

A kind of high boron wear-resisting erosion alloy preparation method
Technical field
The present invention relates to a kind of anti-corrosion wear alloy preparation method, particularly to a kind of high boron wear-resisting erosion alloy system Preparation Method, belongs to corrosion field of material technology.
Background technology
On galvanization production line, the critical rollers base part such as sinking roller, stabilizing roller, smoothing roll, in high-temperature fusion Zinc liquid not only suffers strong corrosion, and the roll surface movement velocity transmitting steel band is up to 35~40m/s, easily It is worn.Under the comprehensive function of these two aspects, easily there are spot corrosion, pitting corrosion, polishing scratch, list edge etc. in roll surface Surface damage, causes above-mentioned part replacement frequent, reduces the operating rate of hot-galvanizing equipment.In order to improve material Anti-zinc liquid high temperature corrosion wear resistance, Chinese invention patent CN 101748354A discloses a kind of anti-Zn solution The spraying method of corrosive wear composite coating, including WC-Co powder body material, MoB-Co powder body material Material and powder spraying device, it is characterised in that the method comprises the steps: step one, treats application element Matrix surface carries out spraying front pretreatment, uses organic solvent to clean, preheats, dehumidifies, grease removal and activation processing; Powder spraying device described in step 2, employing is at the WC-Co described in component base surface spraying to be sprayed Powder body material is 25-65 μm as prime coat, the powder granularity of described WC-Co powder body material, The oxygen gas flow rate of described powder spraying device is set as 880-890 liter/min, kerosene flow rate set For 0.35-0.40 liter/min, spray distance is set as 300-390mm, thermal spraying It is set as that 60-100 gram/minute, gained coating layer thickness are 0.15-0.20m for powder speed m;Powder spraying device described in step 3, employing is described in the spraying of WC-Co powder body material coating surface MoB-Co powder body material as working lining, the powder granularity of described MoB-Co powder body material be 25-65 μm, the oxygen gas flow rate of described powder spraying device is set as 880-920 liter/min Clock, kerosene flow rate set is 0.40-0.45 liter/min, and spray distance is set as 300-3 90mm, for powder speed, thermal spraying is set as that 60-100 gram/minute, gained coating layer thickness are 0.0 7-0.10mm.Chinese invention patent CN 101215671B also discloses a kind of resisting zinc liquid corrosion mill Damaging material and manufacture method thereof, this material capable of resisting zinc solution corrosive wear chemical composition is (weight %): 0.6- 0.8C, 4.0-7.0B, 4.0-6.0Cr, 4.0-7.0Mo, 2.0 -5.0W, 0.3-0.6Si, 0.3-0.6Mn, S < 0.05, P < 0.05, surplus is Fe.This invention material capable of resisting zinc solution corrosive wear utilizes electro-smelting, uses casting side Method molding, foundry goods carries out roughing after annealing, through 980-1020 DEG C of quenching and 520-58 After 0 DEG C of tempering, carry out polish.This invention material capable of resisting zinc solution corrosive wear room temperature hardness is high, reaches 62- 65HRC, the hardness when 500 DEG C also reaches 56-58HRC.Bending strength has reached 9 00-1100MPa.It is resistance to that Chinese invention patent CN103769813A also discloses a kind of high rigidity Lose the manufacture method of zinc-plated sinking roller, comprise the following steps: step one, before sinking roller body is welded Sandblasting roughening processes: by the sinking roller body sandblasting of well cutting, then be carried out removing to the sinking roller after sandblasting Dirty;Step 2, sinking roller surface soldered one layer with tungsten carbide as hard phase, cobalt-based metal is the resistance to of connection phase Erosion hardened layer.This beneficial effect of the invention is: top layer corrosion resistant material uses welding manner with body of roll matrix, is adopted With welding material be on the basis of cobalt-based material interpolation tungsten carbide hard phase, can ensure body surface red firmly Property, there is again superpower anti-wear performance, realized layer tissue anti-wear performance is better than hard alloy;Processing is simple, Without main equipment, it is only necessary to simple welding equipment, to the body of roll before processing without rigors, weld layer group Knitting densification, pore-free, oxide etc. is mingled with, and there is not the space that zinc liquid corrodes.Chinese invention patent CN103741090A also discloses sinking roller and the spraying method of stabilizing roller face coat, particularly relates to one It is applied to sinking roller and the high powder feeding rate resistance to high temperature corrosion on stabilizing roller surface, the spraying method of abrasion-resistant coatings.Should Method sequentially include the following steps: the pretreatment of workpiece, spraying operation, coating surface cleaning, roughness adjust, Sealing pores, dynamic balancing examination inspection, test package.During spraying, powder using efficiency is high, and powder feeding rate reaches 45%, Coating is all right with the combination of matrix, bond strength >=70MPa;During spraying WC base coating, after spraying WC particle oxidation Decomposition is few, and Binder Phase Co is also advantageous for the combination between coating endoparticle simultaneously, supplements coating Deficiency in terms of toughness, coating hardness HV1 >=1050, it is ensured that coating has higher hardness and good toughness; Sealing pores after coating spraying, fills the hole in coating further, and porosity is less than 0.5%, prevents corruption Erosion medium enters corrosion workpiece by coating porosity.Chinese invention patent CN103233173A also discloses one Planting dip-roll sleeve and preparation method, the chemical composition of dip-roll cover material is (mass fraction, %): 0.10 0.25C, 2.0 3.0B, 16.0 18.0Mn, 2.0 3.5Cr, 0.15 0.30N, S < 0.03, P < 0.03, Fe Surplus.This invention material, axle sleeve utilizes electric furnace just can produce, and has hardness and intensity high, toughness, corrosion resistance and The features such as wearability is good, manufacturing process is easy, low production cost.Chinese invention patent CN02851597A Also disclose a kind of Anti-abrasion sink roller shaft sleeve and manufacture method, concrete composition and mass fraction % be as follows: 0.15 0.28C, 3.0 3.5B, 2.0 2.5Cr, 9.5 10.0W, 2.5 3.0Mo, 0.65 0.80Al, 1.20 1.50Si, 0.25 0.50Mn, 0.04 0.08Y, 0.06 0.10Ti, 0.06 0.10Nb, 0.03 0.06Ca, 0.05 0.08Mg, < 0.04, P < 0.05, surplus is Fe for 0.08 0.12K, S.This invention Anti-abrasion sink roller shaft sleeve utilizes electro-smelting, Use casting method molding, quenched and tempering after carry out polish.This invention Anti-abrasion sink roller shaft sleeve hardness Height, wearability and obdurability and resisting zinc liquid corrosion are functional.Chinese invention patent CN102206792A is the most public Having opened the sinking roller of a kind of low alloy material, percentage by weight shared by the composition of its material therefor is C0.04 0.06, Si0.4 0.8, Mn3.5 4, P, S≤0.02, Cr12 13, Ni0.7 1.0, Mo0.8 1.2, remaining is Fe and not Evitable impurity;Described sinking roller is prepared in accordance with the following steps: 1) by carbon-point, metallic silicon, manganese metal, Nickel plate, ferrochrome, metal molybdenum and ferrum, as raw material, put into intermediate frequency furnace after drying, the order of addition is first Add a certain amount of ferrum and carbon-point, add nickel plate, manganese metal, metal molybdenum after fusing, be eventually adding a certain amount of ferrochrome, When smelting temperature reaches 1,560 1580 DEG C, add appropriate metallic silicon;The proportioning of wherein said raw material be with 1000kg material meter, carbon-point 0.1 0.12kg, metallic silicon 2 10kg, manganese metal 30 45kg, nickel plate 5 10kg, Ferrochrome 169 215kg, metal molybdenum 5 15kg, iron surplus, wherein ferrochrome is the ferrum of chrome content 65%;2) melting Molten steel after Hao is poured into through ladle and is run up in type tube, takes out after cooling;3) take out steel pipe to put into rapidly Less than the 100 DEG C taking-ups of cooling of boiler tube inside holding, after taking-up, steel pipe carries out normalizing, and normalized conditions is 980 1000 DEG C, the every 25mm of steel pipe thickness is incubated 2 hours, air cooling;Processing steel cylinder size is required according to customer drawings, Processing steel cylinder and sinking roller two ends roll neck assembly welding, weld preheating 200 250 DEG C, wlding uses 410H;Overall Making annealing treatment after welding, annealing conditions is 700 DEG C, and the every 25mm of steel pipe thickness is incubated 3 hours;4) After sinking roller meets drawing requirement by processing after integrally annealed, its surface is carried out liquid penetrant inspection, dynamic flat Proceed to client after weighing apparatus pass the test use.Chinese invention patent CN102128208A also discloses a kind of high combination The preparation method of intensity dip-roll sleeve, it is characterised in that the step of the method include following some: one, processing Stainless steel base;Two, machine finishing ceramic ring;Three, ceramic surface metallization, ceramic surface metallization layer It is 50~400 microns, containing metal or nonmetal, and binding agent and auxiliary agent, raw material or elemental powders, or Being the combination of these several elemental powders, wherein, elemental powders is several in Co, Si, Cu, Cr, B and W Kind, binding agent is NaCl and SnCl4 to be mixed by quality 2:3, auxiliary agent be Polyethylene Glycol and Colophonium by quality 1: 1 mixing, and the mass content of Co is between 40~60%, and the mass content of other metallic elements is all less than 10%;Four, soldering connects stainless steel base and ceramic ring two parts;Five, machining is to design size.
But, above-mentioned abrasion resistant alloy or have that thick, the fragility of tissue is big, use in easily peel off, or exist anti- The deficiencies such as high temperature Abrasion properties difference.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of laser cladding method that uses, preparation Fine microstructures, densification, the Fe of resisting zinc liquid corrosion abrasion excellence2The high boron wear-resisting erosion alloy that B phase amount is many.
The object of the invention can be realized by following processing step:
The most first by powder diameter scope be 140-200 mesh, mass fraction be respectively 45~50% ferro-boron powder, 14~16% ferrochrome powder, 3~5% molybdenum-iron powder, 4~4.6% pure nickel powder, 1.5~2.5%WC powder and 25~30% pure iron Powder mix homogeneously.
2. by the powder of above-mentioned mix homogeneously, utilize optical fiber laser, use synchronous powder feeding system method, at rustless steel Carrying out laser melting coating, powder feeding rate 18-20g/min on matrix material, laser power is 3.0-4.5KW, scanning Speed is 8-10mm/s, and the number of clad layers is 8-10 layer.Finally can obtain surface flawless, be mingled with pore with And the high boron wear-resisting erosion Alloy by Laser cladding layer of surfacing.
The chemical composition mass fraction of ferro-boron powder is as mentioned above: 19.0~21.0%B ,≤0.5%C ,≤2%Si, ≤ 0.5%Al ,≤0.01%S ,≤0.1%P, surplus Fe.
The chemical composition mass fraction of ferrochrome powder is as mentioned above: 60~65%Cr, 6.8~7.5%C ,≤3.0%Si, ≤ 0.05%S ,≤0.06%P, surplus Fe.
The chemical composition mass fraction of molybdenum-iron powder is as mentioned above: 66.0~72.0%Mo ,≤1.5%Si ,≤0.10%S, ≤ 0.05%P ,≤0.10%Sb ,≤0.50%Sn, surplus Fe.
Laser cladding method of the present invention prepares high boron wear-resisting erosion alloy, and alloyed powder is with ferro-boron powder, straight iron powder and ferrochrome Powder is main, wherein adds mass fraction 45~50% ferro-boron powder, mainly by the power of laser input, molten Coating obtains a fairly large number of Fe2B phase, Fe2It is high that B has hardness, and wearability is good and resisting zinc liquid corrosion The features such as energy is excellent, are a kind of preferably anti-Zn solution abrasion phases.Add mass fraction 14~16% ferrochrome powder, main If utilizing chromium to be combined with carbon, it is thus achieved that high rigidity Cr7C3Phase, is conducive to carrying heavy alloyed abrasion resistance.Additionally, Add mass fraction 3~5% molybdenum-iron powder, be solid-solution in matrix mainly by molybdenum, improve matrix high temperature hardness, base The raising of body high temperature hardness, can stop Fe2B phase and Cr7C3Erosion process is peeled off, thus reaches Improve Alloy Anti high temperature abrasive capacity.Add 1.5~2.5%WC powder, wear resistence can be improved.On this basis, It is additionally added 4~4.6% pure nickel powder, is solid-solution in matrix mainly by nickel, is conducive to improving base plastic.
Laser cladding method of the present invention is prepared in high boron wear-resisting erosion alloy process, by the alloy powder of mix homogeneously, Utilize optical fiber laser, use synchronous powder feeding system method, stainless steel base material carries out laser melting coating, works as powder feeding Rate controlled is at 18-20g/min, and laser power control is at 3.0-4.5KW, and scanning speed controls at 8-10mm/s, The number of clad layers controls at 8-10 layer, finally can obtain surface flawless, be mingled with and pore and surfacing Hardness is high (more than 850HV), the high boron wear-resisting erosion Alloy by Laser cladding layer that resisting zinc liquid corrosion polishing machine is good.
The present invention compared with prior art has the advantage that
1) high boron wear-resisting of the present invention erosion alloy uses laser cladding method to prepare, and overcomes conventional casting methods system Standby high boron alloy boride size is thick, the deficiency easily ftractureed during casting and using, and also overcomes powder Metallurgical method complex process, the deficiency that cost is high;
2) Fe in high boron wear-resisting of the present invention erosion alloy2B phase amount reaches 55~55% (volume fraction), has excellent Different high temperature resistance corrosive wear of zinc solution ability, under the conditions of identical corrosive wear, its resisting corrosive wear of zinc solution ability 6~8 times are improved than 316L rustless steel.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described, but the present invention is not limited to following example.
Embodiment 1:
Using laser cladding method to prepare high boron wear-resisting erosion alloy, concrete step of preparation process is:
It is the most first that 140-200 mesh, mass fraction are respectively 45% ferro-boron powder (ferro-boron powder by powder diameter scope Chemical composition mass fraction be: 19.04%B, 0.27%C, 1.33%Si, 0.20%Al, 0.008%S, 0.063%P, Surplus Fe), 16% ferrochrome powder (the chemical composition mass fraction of ferrochrome powder is: 62.15%Cr, 7.34%C, 2.07%Si, 0.028%S, 0.035%P, surplus Fe), 3% molybdenum-iron powder (the chemical composition mass fraction of molybdenum-iron powder For 69.38%Mo, 0.71%Si, 0.056%S, 0.041%P, 0.034%Sb, 0.26%Sn, surplus Fe), 4.6% Pure nickel powder, 1.5%WC powder and 29.9% straight iron powder mix homogeneously.
2. by the powder of above-mentioned mix homogeneously, utilize IPG 6kW optical fiber laser, use synchronous powder feeding system method, Carrying out laser melting coating, powder feeding rate 18g/min on 316L stainless steel base material, laser power is 3.0KW, scanning speed is 8mm/s, and the number of clad layers is 8 layers.Finally can obtain average hardness and reach 873.8HV, Surface flawless, be mingled with pore and surfacing high boron wear-resisting erosion Alloy by Laser cladding layer.
Embodiment 2:
Using laser cladding method to prepare high boron wear-resisting erosion alloy, concrete step of preparation process is:
It is the most first that 140-200 mesh, mass fraction are respectively 50% ferro-boron powder (ferro-boron powder by powder diameter scope Chemical composition mass fraction be: 20.84%B, 0.25%C, 0.87%Si, 0.20%Al, 0.006%S, 0.071%P, Surplus Fe), 14% ferrochrome powder (the chemical composition mass fraction of ferrochrome powder is: 61.42%Cr, 7.10%C, 2.37%Si, 0.038%S, 0.045%P, surplus Fe), 5% molybdenum-iron powder (the chemical composition mass fraction of molybdenum-iron powder For 67.88%Mo, 0.92%Si, 0.063%S, 0.036%P, 0.037%Sb, 0.15%Sn, surplus Fe), 4% Pure nickel powder, 2%WC powder and 25% straight iron powder mix homogeneously.
2. by the powder of above-mentioned mix homogeneously, utilize IPG 6kW optical fiber laser, use synchronous powder feeding system method, Carrying out laser melting coating, powder feeding rate 19g/min on 316L stainless steel base material, laser power is 3.5KW, scanning speed is 9mm/s, and the number of clad layers is 9 layers.Finally can obtain average hardness and reach 892.0HV, Surface flawless, be mingled with pore and surfacing high boron wear-resisting erosion Alloy by Laser cladding layer.
Embodiment 3:
Using laser cladding method to prepare high boron wear-resisting erosion alloy, concrete step of preparation process is:
It is the most first that 140-200 mesh, mass fraction are respectively 48% ferro-boron powder (ferro-boron powder by powder diameter scope Chemical composition mass fraction be: 20.14%B, 0.38%C, 1.15%Si, 0.33%Al, 0.007%S, 0.052%P, Surplus Fe), 15% ferrochrome powder (the chemical composition mass fraction of ferrochrome powder is: 64.17%Cr, 6.99%C, 2.34%Si, 0.041%S, 0.046%P, surplus Fe), 4% molybdenum-iron powder (the chemical composition mass fraction of molybdenum-iron powder For 69.50%Mo, 1.04%Si, 0.075%S, 0.048%P, 0.067%Sb, 0.38%Sn, surplus Fe), 4.3% Pure nickel powder, 2.5%WC powder and 26.2% straight iron powder mix homogeneously.
2. by the powder of above-mentioned mix homogeneously, utilize IPG 6kW optical fiber laser, use synchronous powder feeding system method, Carrying out laser melting coating, powder feeding rate 20g/min on 316L stainless steel base material, laser power is 4.5KW, scanning speed is 10mm/s, and the number of clad layers is 10 layers.Finally can obtain average hardness to reach 883.1HV, surface flawless, be mingled with pore and surfacing high boron wear-resisting erosion Alloy by Laser cladding layer.
In high boron wear-resisting of the present invention erosion alloy, Fe2B phase amount reaches 55~55% (volume fraction), has excellence High temperature resistance corrosive wear of zinc solution ability, under the conditions of identical corrosive wear, its resisting corrosive wear of zinc solution energy force rate 316L rustless steel improves 6~8 times.High boron wear-resisting of the present invention erosion alloy uses laser cladding method to prepare, and overcomes It is thick that conventional casting methods prepares high boron alloy boride size, easily ftractures not during casting and using Foot, also overcomes powder metallurgy process complex process, and the deficiency that cost is high has good in galvanizing field Popularizing application prospect.

Claims (2)

1. a high boron wear-resisting erosion alloy preparation method, it is characterised in that using laser cladding method to prepare, concrete technology step is:
It is the most first that 140-200 mesh, mass fraction are respectively 45~50% ferro-boron powder, 14~16% ferrochrome powder, 3~5% molybdenum-iron powder, 4~4.6% pure nickel powder, 1.5~2.5%WC powder and 25~30% straight iron powder mix homogeneously by powder diameter scope;
2. by the powder of above-mentioned mix homogeneously, utilizing optical fiber laser, use synchronous powder feeding system method, carry out laser melting coating, powder feeding rate 18-20g/min on stainless steel base material, laser power is 3.0-4.5KW, and scanning speed is 8-10mm/s, and the number of clad layers is 8-10 layer;Finally can obtain surface flawless, be mingled with the high boron wear-resisting erosion Alloy by Laser cladding layer with pore and surfacing;
The chemical composition mass fraction of ferro-boron powder is: 19.0~21.0%B ,≤0.5%C ,≤2%Si ,≤0.5%Al ,≤0.01%S ,≤0.1%P, surplus Fe;
The chemical composition mass fraction of ferrochrome powder is: 60~65%Cr, 6.8~7.5%C ,≤3.0%Si ,≤0.05%S ,≤0.06%P, surplus Fe;
The chemical composition mass fraction of molybdenum-iron powder is: 66.0~72.0%Mo ,≤1.5%Si ,≤0.10%S ,≤0.05%P ,≤0.10%Sb ,≤0.50%Sn, surplus Fe.
The high boron wear-resisting erosion alloy prepared the most in accordance with the method for claim 1.
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CN104694841B (en) * 2015-03-23 2017-09-05 湘潭大学 The integral materials of Fe B base liquid zinc corrosion resistants of a kind of high Cr containing Ni and preparation method thereof
CN105420725B (en) * 2015-12-25 2017-12-29 燕山大学 A kind of preparation method for strengthening boiler tube
CN107414343A (en) * 2017-08-19 2017-12-01 芜湖鼎瀚再制造技术有限公司 The built-up welding of hot extrusion pressure roller submerged-arc welding flux cored wire and its welding procedure
CN107858681B (en) * 2017-11-30 2019-07-05 常州力安液压设备有限公司 A kind of hydraulic interior laser strengthening method for leading cylinder surfaces
CN109773372A (en) * 2019-03-04 2019-05-21 辽宁工程技术大学 A kind of manual electric arc welding coating of build-up welding bar formula and welding rod preparation method
CN111363966A (en) * 2020-04-09 2020-07-03 莆田学院 Zinc liquid corrosion wear resistant high-boron alloy material and preparation method thereof
CN112226722A (en) * 2020-10-15 2021-01-15 西安特种设备检验检测院 Laser alloying surface strengthening treatment method for pipeline steel

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CN101748334B (en) * 2010-01-08 2011-05-04 北京工业大学 High hardness cast boron-containing low alloy wear-resistant high-speed steel and preparation method thereof
CN102453897B (en) * 2010-10-26 2014-12-10 沈阳大陆激光成套设备有限公司 Method for manufacturing tungsten carbide hard alloy wear-resistant coating of rod and wire hot press roll
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