CN105296838A - High-hardness and high-toughness abrasion-resisting ball - Google Patents
High-hardness and high-toughness abrasion-resisting ball Download PDFInfo
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Abstract
The invention discloses a high-hardness and high-toughness abrasion-resisting ball. The high-hardness and high-toughness abrasion-resisting ball is manufactured through the following steps that scrap steel, chromium steel, rare earth alloy, pig iron, manganese steel, molybdenum steel, vanadium steel, tungsten slag, titanium ingots, zirconium ingots, aluminum ingots and magnesium ingots are smelted to obtain liquid alloy, and a ball blank is obtained after casting; a tempered ball is obtained after heat treatment of the ball blank; laser cladding is conducted on the tempered ball by selecting Co-based alloy and WC powder as cladding powder so as to obtain a clad ball; and Fe-based alloy is selected as plasma cladding powder, plasma cladding is carried out on the clad ball to obtain the high-hardness and high-toughness abrasion-resisting ball. The high-hardness and high-toughness abrasion-resisting ball is high in hardness, excellent in abrasion resistance and toughness, good in corrosion resistance and long in service life.
Description
Technical field
The present invention relates to wear-resistant ball technical field, particularly relate to a kind of high hard high-ductility abrasion-proof ball.
Background technology
Ball mill is one of Super-fine grinder machinery of widespread use in the industries such as cement, electric power, ore dressing, building materials.Ball mill steel ball is ball mill equipment grinding material medium, produces ablation, thus reduced further by the particle diameter of material by the collision friction between ball mill steel ball, between steel ball and material.In prior art, the mill Jie steel ball mainly ball milling such as chromium alloy, Mn series alloy steel casting or nodular cast iron part of ball mill, as high chromium steel ball, low-chrome steel ball, multicomponent alloy steel ball and vanadium-titanium-chromium alloy steel ball etc.In order to improve the durability of crushing efficiency and steel ball, steel ball surface is needed to have enough hardness and fastness to rubbing, simultaneously, in process of lapping, steel ball and abrasive material, steel ball and liner plate and the collision occurred between steel ball and steel ball inevitable, therefore, also require that steel ball has certain toughness.In recent years, along with developing rapidly of China's industry, the quality of wear-resistant ball and quantity are had higher requirement, and between steel ball used in prior art its hardness and toughness, is often difficult to reach balance, thus limit its range of application.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of high hard high-ductility abrasion-proof ball, its hardness is high, wear resistance and tenacity excellent, good corrosion resistance, long service life.
The high hard high-ductility abrasion-proof ball of the one that the present invention proposes, adopts following steps to be prepared:
S1, by weight 100-150 part steel scrap, 150-200 part chromium steel, 10-15 part rare earth alloy, 25-50 part pig iron, 5-15 part manganese steel, 5-15 part molybdenum steel, 5-15 part vanadium steel and 10-35 part tungsten slag are put into smelting furnace, be warming up to 1400-1750 DEG C, 10-15 part titanium ingot and 15-30 part zirconium ingot is added after insulation 0.5-1h, 10-25min is incubated at 1450-1500 DEG C, then at 1550-1600 DEG C, add 5-12 part aluminium ingot and 5-20 part magnesium ingot insulation 10-25min, after pulling the slag floating over fluid surface out, obtain aluminium alloy;
S2, cast: aluminium alloy is carried out cast and obtains ball base, wherein, the temperature of cast is 1500-1650 DEG C;
S3, thermal treatment: ball base is put into electric furnace, is warming up to 550-650 DEG C, insulation 2.5-3.5h, is warming up to 700-780 DEG C, insulation 0.5-2h, is warming up to 900-950 DEG C, insulation 1-2h, be warming up to 1000-1080 DEG C, insulation 0.5-1.5h, then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 300-400 DEG C, and insulation 2-3h, is warming up to 480-580 DEG C, insulation 2-3h, and water-cooled to room temperature obtains tempering ball;
S4, tempering ball is cleaned after select Co base alloy and WC powder to be that coating power carries out laser melting coating and obtains cladding ball, wherein, the weight ratio of Co base alloy and WC powder is 10-25:1; In described Co base alloy, the massfraction of the massfraction of the massfraction of C to be the massfraction of 0.8-1.1%, W be 2.5-3.5%, Cr to be the massfraction of 20-25%, Ni be 0.1-0.5%, Fe is 0.2-0.3%, and surplus is Co; In described laser cladding process, the power of laser melting coating is 4500-5500W, and spot diameter is 3-5mm, and hot spot translational speed is 10-15mm/s, and cladding layer thickness is 5-10 μm;
S5, select Fe base alloy to be plasma cladding powder, cladding ball is carried out plasma cladding and obtain the hard high-ductility abrasion-proof ball of described height; Wherein, in described Fe base alloy, the massfraction of C is 0.1-0.5%, the massfraction of Cr is 11-15%, the massfraction of the massfraction of the massfraction of Co to be the massfraction of 1.5-2.5%, Ni be 5-8%, Mo to be the massfraction of 0.5-2%, Ti be 0.5-1.2%, V is the massfraction of 0.1-0.5%, B is 1-1.5%, and surplus is Fe; In described plasma cladding process, cladding electric current is 150-160A, and cladding voltage is 4000-5000V, and plasma gas flow is 0.6-1m
3/ h, shield gas flow rate is 2-2.5m
3/ h, powder feeding rate is 12-15kg/h, and sweep velocity is 850-950mm/min, and cladding layer thickness is 5-10 μm.
Preferably, in S1, by weight 125-135 part steel scrap, 180-190 part chromium steel, 12-13.5 part rare earth alloy, 35-40 part pig iron, 8-12 part manganese steel, 10-14 part molybdenum steel, 8-12 part vanadium steel and 20-26 part tungsten slag are put into smelting furnace, be warming up to 1550-1600 DEG C, 12-13 part titanium ingot and 22-26 part zirconium ingot is added after insulation 0.7-1h, 18-22min is incubated at 1470-1480 DEG C, then at 1560-1570 DEG C, add 8-10 part aluminium ingot and 11-16 part magnesium ingot insulation 18-22min, after pulling the slag floating over fluid surface out, obtain aluminium alloy.
Preferably, in S1, by weight 130 parts of steel scraps, 186 parts of chromium steel, 12.6 parts of rare earth alloies, 38 parts of pig iron, 10 parts of manganese steel, 12.5 parts of molybdenum steels, 10 parts of vanadium steel and 25 parts of tungsten slags are put into smelting furnace, be warming up to 1580 DEG C, 12.6 parts of titanium ingots and 25 parts of zirconium ingots are added after insulation 0.85h, at 1475 DEG C, be incubated 20min, at 1570 DEG C, then add 8.6 parts of aluminium ingots and 12 parts of magnesium ingot insulation 20min, after pulling the slag floating over fluid surface out, obtain aluminium alloy.
Preferably, in S3, ball base is put into electric furnace, is warming up to 585-600 DEG C, insulation 2.9-3.2h, is warming up to 735-750 DEG C, and insulation 1.4-1.7h, is warming up to 920-935 DEG C, insulation 1.4-1.7h, is warming up to 1050-1060 DEG C, insulation 0.9-1.3h, and then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 365-370 DEG C, and insulation 2.6-2.8h, is warming up to 520-560 DEG C, and insulation 2.5-2.8h, water-cooled to room temperature obtains tempering ball.
Preferably, in S3, ball base is put into electric furnace, be warming up to 590 DEG C, insulation 3h, is warming up to 740 DEG C, and insulation 1.5h, is warming up to 930 DEG C, and insulation 1.5h, is warming up to 1055 DEG C, insulation 1h, and then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 368 DEG C, insulation 2.8h, is warming up to 550 DEG C, and insulation 2.6h, water-cooled to room temperature obtains tempering ball.
The massfraction that preferably, in S4, in described Co base alloy, the massfraction of the massfraction of C to be the massfraction of 1%, W be 3%, Cr is 22%, the massfraction of Ni is 0.35%, Fe is 0.25%, and surplus is Co.
Preferably, in S4, in described laser cladding process, the power of laser melting coating is 5000W, and spot diameter is 4mm, and hot spot translational speed is 13mm/s, and cladding layer thickness is 8 μm.
Preferably, in S5, in described Fe base alloy, the massfraction of C is 0.2%, the massfraction of Cr is 12.5%, the massfraction of Co is 2.1%, the massfraction of Ni is 6.3%, the massfraction of Mo is 1.5%, the massfraction of Ti is 1%, the massfraction of V is 0.35%, the massfraction of B is 1.2%, and surplus is Fe.
Preferably, in S5, in described plasma cladding process, cladding electric current is 158A, and cladding voltage is 4650V, and plasma gas flow is 0.85m
3/ h, shield gas flow rate is 2.2m
3/ h, powder feeding rate is 13.8kg/h, and sweep velocity is 900mm/min, and cladding layer thickness is 8 μm.
Preferably, in S4, the granularity of described Co base alloy is 200-300 order; The granularity of described WC powder is 150-250nm; In S5, the granularity of described Fe base alloy is 250-350 order.
The hard high-ductility abrasion-proof ball of height of the present invention, in its preparation process, have selected raw material steel scrap, chromium steel, rare earth alloy, the pig iron, manganese steel, molybdenum steel, vanadium steel, tungsten slag, titanium ingot, zirconium ingot, aluminium ingot and magnesium ingot are raw material, by regulating the content of each raw material, and control order of addition(of ingredients) and the smelting temperature of fusion process, the ball base obtained is made to have excellent wear resistance, hardness and toughness, wherein, containing W in tungsten slag, Mn, Nd, the alloying elements such as Ti, manganese steel in itself and system, titanium ingot, zirconium ingot, vanadium steel has synergy, the very high carbide of formation fusing point can be combined by carbon in system, thus play the effect of heterogeneous nucleation, refinement primary solidification structure, austenitic stability can be reduced simultaneously, be conducive to martensitic formation in system, austenitic grain growth can also be hindered in addition, play the effect of crystal grain thinning, improve toughness and the intensity of system, in heat treatment process afterwards, conservative control process of thermal treatment parameter, the basic body transforms made is martensitic stucture, continuous net-shaped thaumatropy in pyroprocess in tissue is disconnected reticulated structure, thus further refinement crystal grain, improve the pattern of carbide, further increase the toughness of system, hardness and intensity, laser cladding has been carried out afterwards on the surface of tempering ball, in the process of laser cladding, have selected Co base alloy and WC powder is cladding powder, wherein WC powder add the refined crystalline strengthening enhanced in cladding layer, the action effect of solution strengthening and dispersion-strengthened, and WC particle is coated on wherein as Binder Phase by the alloy in Co base alloy, Co base alloy phase as Binder Phase is lower for hardness hard WC particle, in the process of friction, first Binder Phase is worn, after WC is exposed, the WC particle protruded can prevent Binder Phase to be worn further as support, thus improve the hardness of wear-resistant ball, intensity, resistance to cleavage and toughness, carry out plasma cladding afterwards, in plasma cladding process, select Fe base alloy as cladding powder, the associativity of itself and substrate is good, and add the units such as chromium, manganese, molybdenum, carbon and usually adjust hardness, crystal grain thinning, improve the hardness of wear-resistant ball, scour resistance, wearability and erosion resistance, extend the work-ing life of wear-resistant ball.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
The high hard high-ductility abrasion-proof ball of the one that the present invention proposes, adopts following steps to be prepared:
S1, by weight 100 parts of steel scraps, 200 parts of chromium steel, 10 parts of rare earth alloies, 50 parts of pig iron, 5 parts of manganese steel, 15 parts of molybdenum steels, 5 parts of vanadium steel and 35 parts of tungsten slags are put into smelting furnace, be warming up to 1400 DEG C, 10 parts of titanium ingots and 30 parts of zirconium ingots are added after insulation 1h, 25min is incubated at 1450 DEG C, then at 1550 DEG C, add 12 parts of aluminium ingots and 5 parts of magnesium ingot insulation 25min, after pulling the slag floating over fluid surface out, obtain aluminium alloy;
S2, cast: aluminium alloy is carried out cast and obtains ball base, wherein, the temperature of cast is 1500 DEG C;
S3, thermal treatment: ball base is put into electric furnace, be warming up to 650 DEG C, and insulation 2.5h, is warming up to 780 DEG C, and insulation 0.5h, is warming up to 950 DEG C, and insulation 1h, is warming up to 1080 DEG C, insulation 0.5h, and then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 400 DEG C, insulation 2h, is warming up to 580 DEG C, insulation 2h, and water-cooled to room temperature obtains tempering ball;
S4, tempering ball is cleaned after select Co base alloy and WC powder to be that coating power carries out laser melting coating and obtains cladding ball, wherein, the weight ratio of Co base alloy and WC powder is 10:1; The massfraction that in described Co base alloy, the massfraction of the massfraction of C to be the massfraction of 1.1%, W be 2.5%, Cr is 25%, the massfraction of Ni is 0.1%, Fe is 0.3%, and surplus is Co; In described laser cladding process, the power of laser melting coating is 4500W, and spot diameter is 5mm, and hot spot translational speed is 10mm/s, and cladding layer thickness is 10 μm;
S5, select Fe base alloy to be plasma cladding powder, cladding ball is carried out plasma cladding and obtain the hard high-ductility abrasion-proof ball of described height; Wherein, in described Fe base alloy, the massfraction of C is 0.1%, the massfraction of Cr is 15%, the massfraction of Co is 1.5%, the massfraction of Ni is 8%, the massfraction of Mo is 0.5%, the massfraction of Ti is 1.2%, the massfraction of V is 0.1%, the massfraction of B is 1.5%, and surplus is Fe; In described plasma cladding process, cladding electric current is 150A, and cladding voltage is 5000V, and plasma gas flow is 0.6m
3/ h, shield gas flow rate is 2.5m
3/ h, powder feeding rate is 12kg/h, and sweep velocity is 950mm/min, and cladding layer thickness is 5 μm.
Embodiment 2
The high hard high-ductility abrasion-proof ball of the one that the present invention proposes, adopts following steps to be prepared:
S1, by weight 150 parts of steel scraps, 150 parts of chromium steel, 15 parts of rare earth alloies, 25 parts of pig iron, 15 parts of manganese steel, 5 parts of molybdenum steels, 15 parts of vanadium steel and 10 parts of tungsten slags are put into smelting furnace, be warming up to 1750 DEG C, 15 parts of titanium ingots and 15 parts of zirconium ingots are added after insulation 0.5h, 10min is incubated at 1500 DEG C, then at 1600 DEG C, add 5 parts of aluminium ingots and 20 parts of magnesium ingot insulation 10min, after pulling the slag floating over fluid surface out, obtain aluminium alloy;
S2, cast: aluminium alloy is carried out cast and obtains ball base, wherein, the temperature of cast is 1650 DEG C;
S3, thermal treatment: ball base is put into electric furnace, be warming up to 550 DEG C, and insulation 3.5h, is warming up to 700 DEG C, and insulation 2h, is warming up to 900 DEG C, and insulation 2h, is warming up to 1000 DEG C, insulation 1.5h, and then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 300 DEG C, insulation 3h, is warming up to 480 DEG C, insulation 3h, and water-cooled to room temperature obtains tempering ball;
S4, tempering ball is cleaned after select Co base alloy and WC powder to be that coating power carries out laser melting coating and obtains cladding ball, wherein, the weight ratio of Co base alloy and WC powder is 25:1; The massfraction that in described Co base alloy, the massfraction of the massfraction of C to be the massfraction of 0.8%, W be 3.5%, Cr is 20%, the massfraction of Ni is 0.5%, Fe is 0.2%, and surplus is Co; In described laser cladding process, the power of laser melting coating is 5500W, and spot diameter is 3mm, and hot spot translational speed is 15mm/s, and cladding layer thickness is 5 μm;
S5, select Fe base alloy to be plasma cladding powder, cladding ball is carried out plasma cladding and obtain the hard high-ductility abrasion-proof ball of described height; Wherein, in described Fe base alloy, the massfraction of C is 0.5%, the massfraction of Cr is 11%, the massfraction of Co is 2.5%, the massfraction of Ni is 5%, the massfraction of Mo is 2%, the massfraction of Ti is 0.5%, the massfraction of V is 0.5%, the massfraction of B is 1%, and surplus is Fe; In described plasma cladding process, cladding electric current is 160A, and cladding voltage is 4000V, and plasma gas flow is 1m
3/ h, shield gas flow rate is 2m
3/ h, powder feeding rate is 15kg/h, and sweep velocity is 850mm/min, and cladding layer thickness is 10 μm.
Embodiment 3
The high hard high-ductility abrasion-proof ball of the one that the present invention proposes, adopts following steps to be prepared:
S1, by weight 125 parts of steel scraps, 190 parts of chromium steel, 12 parts of rare earth alloies, 40 parts of pig iron, 8 parts of manganese steel, 14 parts of molybdenum steels, 8 parts of vanadium steel and 26 parts of tungsten slags are put into smelting furnace, be warming up to 1550 DEG C, 12 parts of titanium ingots and 26 parts of zirconium ingots are added after insulation 1h, 22min is incubated at 1470 DEG C, then at 1560 DEG C, add 10 parts of aluminium ingots and 11 parts of magnesium ingot insulation 22min, after pulling the slag floating over fluid surface out, obtain aluminium alloy;
S2, cast: aluminium alloy is carried out cast and obtains ball base, wherein, the temperature of cast is 1550 DEG C;
S3, thermal treatment: ball base is put into electric furnace, be warming up to 585 DEG C, and insulation 3.2h, is warming up to 735 DEG C, and insulation 1.7h, is warming up to 920 DEG C, and insulation 1.7h, is warming up to 1050 DEG C, insulation 1.3h, and then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 365 DEG C, insulation 2.8h, is warming up to 520 DEG C, insulation 2.8h, and water-cooled to room temperature obtains tempering ball;
S4, tempering ball is cleaned after select Co base alloy and WC powder to be that coating power carries out laser melting coating and obtains cladding ball, wherein, the weight ratio of Co base alloy and WC powder is 13:1; The massfraction that in described Co base alloy, the massfraction of the massfraction of C to be the massfraction of 1%, W be 2.8%, Cr is 23%, the massfraction of Ni is 0.25%, Fe is 0.27%, and surplus is Co; In described laser cladding process, the power of laser melting coating is 4800W, and spot diameter is 4mm, and hot spot translational speed is 12mm/s, and cladding layer thickness is 9 μm;
S5, select Fe base alloy to be plasma cladding powder, cladding ball is carried out plasma cladding and obtain the hard high-ductility abrasion-proof ball of described height; Wherein, in described Fe base alloy, the massfraction of C is 0.25%, the massfraction of Cr is 14%, the massfraction of Co is 1.8%, the massfraction of Ni is 7%, the massfraction of Mo is 1%, the massfraction of Ti is 1.1%, the massfraction of V is 0.25%, the massfraction of B is 1.4%, and surplus is Fe; In described plasma cladding process, cladding electric current is 152A, and cladding voltage is 4800V, and plasma gas flow is 0.8m
3/ h, shield gas flow rate is 2.3m
3/ h, powder feeding rate is 12.6kg/h, and sweep velocity is 920mm/min, and cladding layer thickness is 7 μm.
Embodiment 4
The high hard high-ductility abrasion-proof ball of the one that the present invention proposes, adopts following steps to be prepared:
S1, by weight 135 part steel scrap, 180 parts of chromium steel, 13.5 parts of rare earth alloies, 35 parts of pig iron, 12 parts of manganese steel, 10 parts of molybdenum steels, 12 parts of vanadium steel and 20 parts of tungsten slags put into smelting furnace, be warming up to 1600 DEG C, 13 parts of titanium ingots and 22 parts of zirconium ingots are added after insulation 0.7h, 18min is incubated at 1480 DEG C, then at 1570 DEG C, add 8 parts of aluminium ingots and 16 parts of magnesium ingot insulation 18min, after pulling the slag floating over fluid surface out, obtain aluminium alloy;
S2, cast: aluminium alloy is carried out cast and obtains ball base, wherein, the temperature of cast is 1620 DEG C;
S3, thermal treatment: ball base is put into electric furnace, be warming up to 600 DEG C, and insulation 2.9h, is warming up to 750 DEG C, and insulation 1.4h, is warming up to 935 DEG C, and insulation 1.4h, is warming up to 1060 DEG C, insulation 0.9h, and then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 370 DEG C, insulation 2.6h, is warming up to 560 DEG C, insulation 2.5h, and water-cooled to room temperature obtains tempering ball;
S4, tempering ball is cleaned after select Co base alloy and WC powder to be that coating power carries out laser melting coating and obtains cladding ball, wherein, the weight ratio of Co base alloy and WC powder is 22:1; The massfraction that in described Co base alloy, the massfraction of the massfraction of C to be the massfraction of 0.9%, W be 3.2%, Cr is 21%, the massfraction of Ni is 0.38%, Fe is 0.22%, and surplus is Co; In described laser cladding process, the power of laser melting coating is 5300W, and spot diameter is 3mm, and hot spot translational speed is 13.5mm/s, and cladding layer thickness is 7 μm;
S5, select Fe base alloy to be plasma cladding powder, cladding ball is carried out plasma cladding and obtain the hard high-ductility abrasion-proof ball of described height; Wherein, in described Fe base alloy, the massfraction of C is 0.34%, the massfraction of Cr is 12.5%, the massfraction of Co is 2.2%, the massfraction of Ni is 6.5%, the massfraction of Mo is 1.7%, the massfraction of Ti is 0.8%, the massfraction of V is 0.35%, the massfraction of B is 1.1%, and surplus is Fe; In described plasma cladding process, cladding electric current is 158A, and cladding voltage is 4300V, and plasma gas flow is 0.9m
3/ h, shield gas flow rate is 2.2m
3/ h, powder feeding rate is 14kg/h, and sweep velocity is 880mm/min, and cladding layer thickness is 8.5 μm.
Embodiment 5
The high hard high-ductility abrasion-proof ball of the one that the present invention proposes, adopts following steps to be prepared:
S1, by weight 130 parts of steel scraps, 186 parts of chromium steel, 12.6 parts of rare earth alloies, 38 parts of pig iron, 10 parts of manganese steel, 12.5 parts of molybdenum steels, 10 parts of vanadium steel and 25 parts of tungsten slags are put into smelting furnace, be warming up to 1580 DEG C, 12.6 parts of titanium ingots and 25 parts of zirconium ingots are added after insulation 0.85h, 20min is incubated at 1475 DEG C, then at 1570 DEG C, add 8.6 parts of aluminium ingots and 12 parts of magnesium ingot insulation 20min, after pulling the slag floating over fluid surface out, obtain aluminium alloy;
S2, cast: aluminium alloy is carried out cast and obtains ball base, wherein, the temperature of cast is 1600 DEG C;
S3, thermal treatment: ball base is put into electric furnace, be warming up to 590 DEG C, and insulation 3h, is warming up to 740 DEG C, and insulation 1.5h, is warming up to 930 DEG C, and insulation 1.5h, is warming up to 1055 DEG C, insulation 1h, and then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 368 DEG C, insulation 2.8h, is warming up to 550 DEG C, insulation 2.6h, and water-cooled to room temperature obtains tempering ball;
S4, tempering ball is cleaned after select Co base alloy and WC powder to be that coating power carries out laser melting coating and obtains cladding ball, wherein, the weight ratio of Co base alloy and WC powder is 20:1; The massfraction that in described Co base alloy, the massfraction of the massfraction of C to be the massfraction of 1%, W be 3%, Cr is 22%, the massfraction of Ni is 0.35%, Fe is 0.25%, and surplus is Co; In described laser cladding process, the power of laser melting coating is 5000W, and spot diameter is 4mm, and hot spot translational speed is 13mm/s, and cladding layer thickness is 8 μm;
S5, select Fe base alloy to be plasma cladding powder, cladding ball is carried out plasma cladding and obtain the hard high-ductility abrasion-proof ball of described height; Wherein, in described Fe base alloy, the massfraction of C is 0.2%, the massfraction of Cr is 12.5%, the massfraction of Co is 2.1%, the massfraction of Ni is 6.3%, the massfraction of Mo is 1.5%, the massfraction of Ti is 1%, the massfraction of V is 0.35%, the massfraction of B is 1.2%, and surplus is Fe; In described plasma cladding process, cladding electric current is 158A, and cladding voltage is 4650V, and plasma gas flow is 0.85m
3/ h, shield gas flow rate is 2.2m
3/ h, powder feeding rate is 13.8kg/h, and sweep velocity is 900mm/min, and cladding layer thickness is 8 μm;
Wherein, in S4, the granularity of described Co base alloy is 200-300 order; The granularity of described WC powder is 150-250nm; In S5, the granularity of described Fe base alloy is 250-350 order.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a high hard high-ductility abrasion-proof ball, is characterized in that, adopts following steps to be prepared:
S1, by weight 100-150 part steel scrap, 150-200 part chromium steel, 10-15 part rare earth alloy, 25-50 part pig iron, 5-15 part manganese steel, 5-15 part molybdenum steel, 5-15 part vanadium steel and 10-35 part tungsten slag are put into smelting furnace, be warming up to 1400-1750 DEG C, 10-15 part titanium ingot and 15-30 part zirconium ingot is added after insulation 0.5-1h, 10-25min is incubated at 1450-1500 DEG C, then at 1550-1600 DEG C, add 5-12 part aluminium ingot and 5-20 part magnesium ingot insulation 10-25min, after pulling the slag floating over fluid surface out, obtain aluminium alloy;
S2, cast: aluminium alloy is carried out cast and obtains ball base, wherein, the temperature of cast is 1500-1650 DEG C;
S3, thermal treatment: ball base is put into electric furnace, is warming up to 550-650 DEG C, insulation 2.5-3.5h, is warming up to 700-780 DEG C, insulation 0.5-2h, is warming up to 900-950 DEG C, insulation 1-2h, be warming up to 1000-1080 DEG C, insulation 0.5-1.5h, then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 300-400 DEG C, and insulation 2-3h, is warming up to 480-580 DEG C, insulation 2-3h, and water-cooled to room temperature obtains tempering ball;
S4, tempering ball is cleaned after select Co base alloy and WC powder to be that coating power carries out laser melting coating and obtains cladding ball, wherein, the weight ratio of Co base alloy and WC powder is 10-25:1; In described Co base alloy, the massfraction of the massfraction of the massfraction of C to be the massfraction of 0.8-1.1%, W be 2.5-3.5%, Cr to be the massfraction of 20-25%, Ni be 0.1-0.5%, Fe is 0.2-0.3%, and surplus is Co; In described laser cladding process, the power of laser melting coating is 4500-5500W, and spot diameter is 3-5mm, and hot spot translational speed is 10-15mm/s, and cladding layer thickness is 5-10 μm;
S5, select Fe base alloy to be plasma cladding powder, cladding ball is carried out plasma cladding and obtain the hard high-ductility abrasion-proof ball of described height; Wherein, in described Fe base alloy, the massfraction of C is 0.1-0.5%, the massfraction of Cr is 11-15%, the massfraction of the massfraction of the massfraction of Co to be the massfraction of 1.5-2.5%, Ni be 5-8%, Mo to be the massfraction of 0.5-2%, Ti be 0.5-1.2%, V is the massfraction of 0.1-0.5%, B is 1-1.5%, and surplus is Fe; In described plasma cladding process, cladding electric current is 150-160A, and cladding voltage is 4000-5000V, and plasma gas flow is 0.6-1m
3/ h, shield gas flow rate is 2-2.5m
3/ h, powder feeding rate is 12-15kg/h, and sweep velocity is 850-950mm/min, and cladding layer thickness is 5-10 μm.
2. high hard high-ductility abrasion-proof ball according to claim 1, it is characterized in that, in S1, by weight by 125-135 part steel scrap, 180-190 part chromium steel, 12-13.5 part rare earth alloy, 35-40 part pig iron, 8-12 part manganese steel, 10-14 part molybdenum steel, 8-12 part vanadium steel and 20-26 part tungsten slag put into smelting furnace, be warming up to 1550-1600 DEG C, 12-13 part titanium ingot and 22-26 part zirconium ingot is added after insulation 0.7-1h, 18-22min is incubated at 1470-1480 DEG C, then at 1560-1570 DEG C, add 8-10 part aluminium ingot and 11-16 part magnesium ingot insulation 18-22min, aluminium alloy is obtained after pulling the slag floating over fluid surface out.
3. high hard high-ductility abrasion-proof ball according to claim 1 or 2, it is characterized in that, in S1, by weight 130 parts of steel scraps, 186 parts of chromium steel, 12.6 parts of rare earth alloies, 38 parts of pig iron, 10 parts of manganese steel, 12.5 parts of molybdenum steels, 10 parts of vanadium steel and 25 parts of tungsten slags are put into smelting furnace, be warming up to 1580 DEG C, 12.6 parts of titanium ingots and 25 parts of zirconium ingots are added after insulation 0.85h, 20min is incubated at 1475 DEG C, then at 1570 DEG C, add 8.6 parts of aluminium ingots and 12 parts of magnesium ingot insulation 20min, after pulling the slag floating over fluid surface out, obtain aluminium alloy.
4. high hard high-ductility abrasion-proof ball according to any one of claim 1-3, is characterized in that, in S3, ball base is put into electric furnace, be warming up to 585-600 DEG C, insulation 2.9-3.2h, is warming up to 735-750 DEG C, insulation 1.4-1.7h, be warming up to 920-935 DEG C, insulation 1.4-1.7h, is warming up to 1050-1060 DEG C, insulation 0.9-1.3h, then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 365-370 DEG C, and insulation 2.6-2.8h, is warming up to 520-560 DEG C, and insulation 2.5-2.8h, water-cooled to room temperature obtains tempering ball.
5. high hard high-ductility abrasion-proof ball according to any one of claim 1-4, is characterized in that, in S3, ball base is put into electric furnace, be warming up to 590 DEG C, insulation 3h, is warming up to 740 DEG C, insulation 1.5h, be warming up to 930 DEG C, insulation 1.5h, is warming up to 1055 DEG C, insulation 1h, then air cooling obtains quenching ball to room temperature; Quenching ball is warming up to 368 DEG C, insulation 2.8h, is warming up to 550 DEG C, and insulation 2.6h, water-cooled to room temperature obtains tempering ball.
6. high hard high-ductility abrasion-proof ball according to any one of claim 1-5, it is characterized in that, in S4, in described Co base alloy, the massfraction of the massfraction of C to be the massfraction of 1%, W be 3%, Cr is 22%, the massfraction of Ni is 0.35%, the massfraction of Fe is 0.25%, and surplus is Co.
7. high hard high-ductility abrasion-proof ball according to any one of claim 1-6, it is characterized in that, in S4, in described laser cladding process, the power of laser melting coating is 5000W, and spot diameter is 4mm, and hot spot translational speed is 13mm/s, and cladding layer thickness is 8 μm.
8. high hard high-ductility abrasion-proof ball according to any one of claim 1-7, it is characterized in that, in S5, in described Fe base alloy, the massfraction of C is 0.2%, the massfraction of Cr is that the massfraction of 12.5%, Co is 2.1%, the massfraction of Ni is 6.3%, the massfraction of Mo is 1.5%, the massfraction of Ti is 1%, the massfraction of V is 0.35%, the massfraction of B is 1.2%, and surplus is Fe.
9. high hard high-ductility abrasion-proof ball according to any one of claim 1-8, it is characterized in that, in S5, in described plasma cladding process, cladding electric current is 158A, and cladding voltage is 4650V, and plasma gas flow is 0.85m
3/ h, shield gas flow rate is 2.2m
3/ h, powder feeding rate is 13.8kg/h, and sweep velocity is 900mm/min, and cladding layer thickness is 8 μm.
10. high hard high-ductility abrasion-proof ball according to any one of claim 1-9, it is characterized in that, in S4, the granularity of described Co base alloy is 200-300 order; The granularity of described WC powder is 150-250nm; In S5, the granularity of described Fe base alloy is 250-350 order.
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| CN201510692662.4A CN105296838A (en) | 2015-10-22 | 2015-10-22 | High-hardness and high-toughness abrasion-resisting ball |
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| CN201510692662.4A CN105296838A (en) | 2015-10-22 | 2015-10-22 | High-hardness and high-toughness abrasion-resisting ball |
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| CN106834922A (en) * | 2016-12-27 | 2017-06-13 | 芜湖锐华暖通科技有限公司 | A kind of ball mill coating wear-resistant ball and preparation method thereof |
| CN106868418A (en) * | 2016-12-27 | 2017-06-20 | 芜湖锐华暖通科技有限公司 | A kind of ball mill low abrasion wear-resistant ball and preparation method thereof |
| CN106868417A (en) * | 2016-12-27 | 2017-06-20 | 芜湖锐华暖通科技有限公司 | A kind of low abrasion wear-resistant ball of high rigidity and preparation method thereof |
| CN109735842A (en) * | 2019-03-01 | 2019-05-10 | 潍坊学院 | A kind of alloy powder for plasma cladding |
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| CN106756502A (en) * | 2016-12-27 | 2017-05-31 | 芜湖锐华暖通科技有限公司 | A kind of low abrasion wear-resistant ball of high intensity and preparation method thereof |
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| CN106868417A (en) * | 2016-12-27 | 2017-06-20 | 芜湖锐华暖通科技有限公司 | A kind of low abrasion wear-resistant ball of high rigidity and preparation method thereof |
| CN106756502B (en) * | 2016-12-27 | 2019-06-04 | 芜湖锐华暖通科技有限公司 | Low abrasion wear-resistant ball of a kind of high intensity and preparation method thereof |
| CN109735842A (en) * | 2019-03-01 | 2019-05-10 | 潍坊学院 | A kind of alloy powder for plasma cladding |
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