CN102212821B - Method for preparing reinforced tungsten carbide abrasion-resistant composite plate - Google Patents
Method for preparing reinforced tungsten carbide abrasion-resistant composite plate Download PDFInfo
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Abstract
The invention discloses a method for preparing a reinforced tungsten carbide abrasion-resistant composite plate. The method comprises the following steps of: selecting a low-carbon steel plate or a low-alloy steel plate adapted with the size of a hearth of a heating furnace as a substrate, uniformly spreading film removing agent, alloy powder, tungsten carbide powder and slag forming agent powder on a cleared surface, horizontally putting the substrate into the heating furnace, and heating the substrate to obtain the reinforced tungsten carbide abrasion-resistant composite plate. The abrasion-resistant alloy surface of the working layer of the reinforced tungsten carbide abrasion-resistant composite plate produced by using the method is flat and attractive; the composite plate can be directly used for the working conditions (such as a baffle plate and the like) requiring flat surfaces, so a machining process and corresponding production cost are saved; and the composite plate can be widely applied to the working condition of high abrasive abrasion, and has longer service life.
Description
Technical field
The present invention relates to a kind of preparation method of wear-resistant composite board, relate in particular to a kind of preparation method who strengthens wolfram varbide high abrasion composition board.
Background technology
In the industrial production field, galling is the one of the main reasons that causes mechanical component to lose efficacy, and like the material-transporting system of industries such as metallurgy, coal, electric power, waterway dredging, component wear is very serious.Wearing and tearing not only cause the massive losses of material, and maintenance tends to cause stopping production, influence the normal operation of production line.Therefore research and develop the attention that high abrasion resisting material receives material supplier author always.
The cast-in-block anti-friction alloy is traditional high-abrasive material, like high mangaenese steel, white cast iron, chromium wear resisting cast iron etc., with this type material the wear resistance of parts is greatly improved.But also there is some deficiency in these materials; Bigger like white cast iron and chromium wear resisting cast iron fragility, not shock-resistant, be prone to fracture take place or peel off having under the ballistic working condition; The wear-resistant grain of high mangaenese steel polishing machine is relatively poor; Most of wear resistance castings structure is heavy simultaneously, is unfavorable for reducing dead load, be connected the relatively difficulty of welding process with other parts.
To the deficiency that traditional high-abrasive material exists, people have developed Wear-Resistant Compound Steel Plate.This Wear-Resistant Compound Steel Plate adopts technique for overlaying to process, and wear-resistant alloy layer adopts high carbon ferro-chrome more, is used widely at present, is bringing into play vital role aspect saving energy and reduce the cost, enhancing productivity.Its production technique is to adopt wear-resisting welding materials such as flux-cored wire, welding rod, alloy powder block, sometimes also to welding zone interpolation powdered alloy; Use welding process; Be applied on the low carbon steel substrate wear-resisting welding material is molten, through smoothing technology, process wear-resistant composite board again.The major advantage of Wear-Resistant Compound Steel Plate is, wear-resistant composite bedly can give full play to the usefulness of alloy according to workpiece working condition adjustment alloy system, also is of value to simultaneously and saves valuable alloy; Clad steel plate can impact use under the bigger working condition; Because substrate adopts the soft steel manufacturing, be easier to the welding ratio of other workpiece, therefore available clad steel plate welding parts, this working method conveniently be other high-abrasive material can't be obtained.Like application number is that 201010583490.4 patent of invention " the high abrasion composition board that is used for chute ", the utility model patent " a kind of wear-resistance composite board of metal machine part " that application number is 201020125565.X etc. are with welding materials such as flux-cored wires; At plain carbon stool surface overlaying wear resistant alloy, process wear-resistant composite board.Yet, adopt bead-welding technology to produce wear-resistant composite board, production efficiency is very low.Even adopt the automatic surfacing technology, per tour (by calculating in 8 hours) also can only the build-up wear-resistant layer thickness be about 1 square metre of the wear-resisting steel plate of 3～4mm, and the production efficiency of manual build up welding is lower.
Though the rich chromium cast iron wear-resistant alloy layer has good abrasion resistance, for the operating mode of some serious wear, perhaps require higher wearing piece in work-ing life, rich chromium cast iron often can't meet the demands.Harsh day by day along with the component of machine applying working condition had higher requirement to the quality and quantity of wear-resistant composite board, low-costly and in high volume, the exploitation of special requirement high abrasion composition board production technology also becomes more urgent.Through retrieval, prepare the method for strengthening wolfram varbide high abrasion composition board with the process furnace mode and also do not appear in the newspapers.
Summary of the invention
To existing rich chromium cast iron is that wear resistant alloy can't satisfy the more present situation of high-wearing feature requirement, the invention provides a kind of preparation method who strengthens wolfram varbide high abrasion composition board.
Technical conceive of the present invention is: with mild steel plate or Low Alloy Steel Plate as substrate; It is clean at first to adopt mechanical means or chemical process to remove impurity such as the iron rust of substrate surface, greasy dirt; Horizontal positioned substrate then, uniformly dispersing stripper on substrate surface, powdered alloy on the uniformly dispersing on stripper again; The fusing point of powdered alloy is lower than the fusing point of substrate, then tungsten-carbide powder on the uniformly dispersing on powdered alloy.Scatter slag former on the surface of tungsten-carbide powder, the fusing point of slag former is lower than the fusing point of powdered alloy, forms the oxidation of molten slag secluding air to powdered alloy during heating.In process furnace, process furnace can once be placed polylith according to its volume with the substrate horizontal positioned of scattering last stripper, powdered alloy, tungsten-carbide powder and slag former powder, and the initial temperature of process furnace is the arbitrary temp below the powdered alloy fusing point; Furnace temperature is heated to more than the fusing point of powdered alloy, below the fusing point of substrate; The insulation certain hour, the powdered alloy fusing forms liquid, under this temperature; The sull reaction of stripper and substrate surface forms slag and removes sull; Tungsten-carbide powder sinks in the powdered alloy liquid metal of fusing because proportion is bigger simultaneously, because Heating temperature is no more than the fusing point of wolfram varbide; Wolfram varbide can not decomposed, thereby keep its high-wear resistance.The slag that the reaction of the sull of stripper and substrate surface forms float to melted alloy above, make the alloy of fusing can wetting well matrix, play the provide protection of secluding air as the slag and the slag of slag former formation of stripper reaction product.The insulation certain hour, melted alloy and substrate, wolfram varbide are realized metallurgical binding through diffusion.At last, the cooling of coming out of the stove, the carbine abrasion-proof composition board is strengthened.
The preparation method of reinforcement carbine abrasion-proof composition board according to the invention, step comprises:
(1) selects for use big or small mild steel plate of suitable process furnace burner hearth or Low Alloy Steel Plate as substrate, adopt greasy dirt, the iron rust on any surface of mechanical means or chemical process cleaning substrate;
When the greasy dirt on aforesaid substrate surface, iron rust adopt mechanical means to remove, wire wheel commonly used or grinder buffing cleaning be can select for use, shot-peening or sandblasting commonly used perhaps adopted; Preferentially select the shot peening method for use;
When the greasy dirt on aforesaid substrate surface, iron rust etc. adopt chemical process to remove, can adopt sulfuric acid or hydrochloric acid, or use both mixed aqueous solutions.The parameter of pickling is that 10% sulfuric acid or aqueous hydrochloric acid, pickling temperature are 40-60 ℃, 10-20 minute pickling time; Perhaps the 5%-10% sulfuric acid and the 2%-10% mixed in hydrochloric acid aqueous solution, 20 ℃ of pickling temperatures, 2-10 minute pickling time;
(2) will clear up good substrate cleaning and face up, horizontal positioned, and on cleaning face the uniformly dispersing stripper;
(3) powdered alloy on the uniformly dispersing again on the stripper surface;
(4) tungsten-carbide powder that step (3) is added alloy powder end quality 10～60% amounts is dispersed evenly to the powdered alloy surface again;
(5) slag former powder on the surperficial uniformly dispersing of tungsten-carbide powder;
(6) will be scattered with the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder; Level is put into process furnace, and heat temperature raising (can also can be protected with nitrogen or argon shield in the stove; Directly in air, heat), the carbine abrasion-proof composition board is strengthened in preparation;
It is characterized in that:
The said mild steel plate of step (1) selects Q195 or Q235 mild steel plate; Said Low Alloy Steel Plate selects the Q345 Low Alloy Steel Plate;
The said stripper of step (2) is by percentage to the quality: 100% borax; Or 25% borax and boric acid 75%; Or 80% boric acid, 15% borax and 5% Calcium Fluoride (Fluorspan); Or 30% boric acid and 70% potassium fluoborate;
The thickness that the said stripper of step (2) scatters is 0.1-0.8mm;
The granularity of the said powdered alloy of step (3) is-40 orders～+ 300 orders; The composition of said powdered alloy is by percentage to the quality: C is 3%～3.6%, Cr is 28%～32%, B is 1.5%～2.5%, Si is 1.5%～2.5%, Mo is 3.0%～4.0%, Ni is 4.0%～6.0%, surplus for Fe with do not influence the impurity of powdered alloy performance; Its fusing point is 1200～1250 ℃, the hardness 58～62HRC of powdered alloy deposited metal; Perhaps C is 4.5%～5.0%, Cr is 45%～50%, B is 1.8%～2.3%, Si is 0.8%～1.4%, surplus for Fe with do not influence the impurity of powdered alloy performance, its fusing point is 1200～1280 ℃, the hardness 63～68HRC of powdered alloy deposited metal; Perhaps C is 0.6%～1.0%, B is 2.5%～4.5%, Si is 3.0%～5.0%, Cr is 14%～17%, Fe is no more than 15%, surplus for Ni with do not influence the impurity of powdered alloy performance; Its fusing point is 980～1020 ℃, the hardness 55-62HRC of powdered alloy deposited metal;
The thickness that the said powdered alloy of step (3) scatters is 0.1-20mm;
The granularity of the said tungsten-carbide powder of step (4) is-40 orders～+ 300 orders, and usage quantity preferably step (3) adds 20～60% of alloy powder end quality;
The granularity of the said slag former powder of step (5) is-50 orders, and its composition is by percentage to the quality: CaF
2Be 30%～50%, CaO is 30%～35%, and surplus is SiO
2Do not influence the impurity of its performance, its fusing point is 1100 ℃～1200 ℃;
The thickness of the said slag former powder of step (5) is 0.5～2.5mm;
The condition that the carbine abrasion-proof composition board is strengthened in the said heat temperature raising preparation of step (6) is: to be lower than the initial heating of the said powdered alloy melting temperature of step (3); The interior temperature of stove is reached be higher than 30～50 ℃ of powdered alloy fusing points; Be incubated 10 minutes～40 minutes; Cool to following 40～60 ℃ of powdered alloy fusing point then, be incubated and come out of the stove after 0.5～6 hour, promptly get and strengthen the carbine abrasion-proof composition board.
The above-mentioned preparation in the method for strengthening the carbine abrasion-proof composition board: the said stripper of step (2) by percentage to the quality preferably: 100% borax; Or 25% borax and boric acid 75%; The thickness that said stripper scatters is preferably 0.2-0.5mm.
The above-mentioned preparation in the method for strengthening the carbine abrasion-proof composition board: the thickness that the said powdered alloy of step (3) scatters is preferably 0.5-10mm.
The above-mentioned preparation in the method for strengthening the carbine abrasion-proof composition board: the said tungsten-carbide powder usage quantity of step (4) most preferably is 20%～40% of a powdered alloy quality.
The above-mentioned preparation in the method for strengthening the carbine abrasion-proof composition board: the said slag former powder of step (5) composition by percentage to the quality preferably: 35%～45%CaF
2, 30%～32%CaO, surplus is SiO
2Do not influence the impurity of its performance.
The above-mentioned preparation in the method for strengthening the carbine abrasion-proof composition board: the thickness that the said slag former powder of step (5) scatters is preferably 1.0mm-2.0mm.
The above-mentioned preparation in the method for strengthening the carbine abrasion-proof composition board: the condition optimization that the carbine abrasion-proof composition board is strengthened in the said heat temperature raising preparation of step (6) is: heating makes in the stove temperature reach to be higher than 30～40 ℃ of powdered alloy fusing points; Be incubated 20 minutes～30 minutes; Cool to following 40～50 ℃ of powdered alloy fusing point then; Be incubated and come out of the stove after 2～4 hours, promptly get and strengthen the carbine abrasion-proof composition board.
The above-mentioned preparation in the method for strengthening the carbine abrasion-proof composition board: when the said substrate level that is scattered with stripper, powdered alloy, tungsten-carbide powder and slag former powder of step (6) is put into process furnace; Can be according to process furnace burner hearth space; Screen work is set in stove, the disposable polylith of said substrate is put into carried out the heat temperature raising processing on the stove screen work.
The method of strengthening the carbine abrasion-proof composition board for preparing according to the invention has following positive effect:
(1) this patent adopts process furnace to produce wear-resistant composite board, and a stove can be adorned polylith, compares with bead-welding technology, and production efficiency significantly improves, and can produce in enormous quantities, has reduced production cost.
(2) this patent can be produced the wear-resistant composite board that substrate thickness is little, wearing layer thickness is bigger, has improved the utilization ratio of material.Overcome bead-welding technology and burnt, can't produce the drawback of the thin wearing plate of substrate because of the thin welding easily of substrate.The wear-resistant composite board of application of thin substrate can significantly reduce equipment self-weight, has reached purpose energy-conservation, consumption reduction.
(3) the reinforcement carbine abrasion-proof composition board distortion of producing of this patent process furnace technology is less, even does not have distortion, and this is owing to the decision that is evenly distributed of its Heating temperature; It is serious to have saved the distortion of bead-welding technology wear-resistant composite board; Need the operation (even smoothing sometimes also is difficult to make wearing plate to recover smooth fully) of smoothing, reduced the smoothing facility investment; Simplify the technological process of production, practiced thrift production cost.
(4) utilize the inventive method can also obtain the very little wearing plate of wearing layer thickness, be no more than 1mm like thickness, this is that bead-welding technology can't be realized.The wearing plate that this wearing layer thickness is very little can satisfy some demand of industry member.
(5) the reinforcement carbine abrasion-proof composition board of this patent process furnace technology production; As the not only surfacing of wear resistant alloy of working lining, attractive in appearance; And can directly be used for the operating mode (like baffle plate etc.) of requirement surfacing; Save mechanical workout operation (wearing layer hardness very high even be difficult to processing), saved productive expense.The wearing plate surface of bead-welding technology has between the ripple, welding bead of welding bead and overlaps also unfairness, and not only the wearing layer surface is rough and uneven in surface, not attractive in appearance, and when being used for the operating mode of requirement surfacing; Need processing; Man-hour has been wasted in processing, has increased cost, when wear resistant alloy hardness is higher sometimes; The processing suffering, even can not process.
(6) contain 10%～60% wolfram varbide in the wearing layer metal of the reinforcement carbine abrasion-proof composition board of this patent; The temperature of heat-processed is lower; Wolfram varbide does not decompose and keeps its form; Make this wear resistant alloy have very high wear resisting property, be suitable for high abrasive wear operating mode, have higher work-ing life.
Embodiment
Embodiment 1:
(1) select for use the Q235 mild steel plate as substrate, substrate is of a size of 1m * 2m, and thickness is 8mm.Adopt shot peening method commonly used, remove greasy dirt, the iron rust of substrate surface.
(2) with step (1) cleaning substrate horizontal positioned well, cleaning faces up.Uniformly dispersing stripper on the good substrate surface of cleaning, the thickness of stripper is 0.2mm, the composition of stripper (mass percent) is borax 25%, boric acid 75%.
(3) powdered alloy on the uniformly dispersing again on the stripper surface of step (2); The granularity of powdered alloy is-40 orders～+ 300 orders; The thickness of powdered alloy is 5mm; The composition of powdered alloy (mass percent) is: C is 3.6%, Cr is 30%, B is 2.1%, Si is 1.8%, Mo is 3.0%, Ni is 4.0%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
(4) on the surface of step (3) powdered alloy, the tungsten-carbide powder of powdered alloy quality 30% on the uniformly dispersing, the granularity of tungsten-carbide powder is-40 orders～+ 300 orders.
(5) on the surface of step (4) tungsten-carbide powder, slag former on the uniformly dispersing, the granularity of slag former powder is-50 orders, and the thickness of slag former powder is 1.2mm, and the composition of slag former (mass percent) is 40%CaF
2, 30%CaO, surplus is SiO
2Do not influence the impurity of its performance.
(6) will scatter the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level pushes process furnace, and keeps horizontal positioned, through the screen work that is provided with in the stove, once puts into 6.Directly in air by being lower than the initial heating of the said powdered alloy melting temperature of step (3), make that temperature reaches 1280 ℃ in the stove, be incubated 10 minutes, cool to 1180 ℃ then, be incubated and come out of the stove after 3 hours, the carbine abrasion-proof composite board product is promptly strengthened.
Embodiment 2:
(1) select for use the Q345 steel plate as substrate, substrate is of a size of 1m * 1.5m, and thickness is 10mm.Adopt the mixed aqueous solution chemical process cleaning substrate surface of sulfuric acid commonly used and hydrochloric acid, the pickling parameter is: percent by volume is that 9% sulfuric acid and percent by volume are the mixed aqueous solution of 6% hydrochloric acid, 20 ℃ of pickling temperatures, 10 minutes pickling time.
(2) with step (1) cleaning substrate horizontal positioned well, cleaning faces up.Uniformly dispersing stripper on the good substrate surface of cleaning, the thickness of stripper is 0.5mm, the composition of stripper (mass percent) is boric acid 80%, borax 15%, Calcium Fluoride (Fluorspan) 5%.
(3) powdered alloy on the uniformly dispersing again on the stripper surface of step (2); The granularity of powdered alloy is-40 orders～+ 300 orders; The thickness of powdered alloy is 6mm; The composition of powdered alloy (mass percent) is: C is 4.8%, Cr is 46%, B is 2.0%, Si is 1.2%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
(4) on the surface of step (3) powdered alloy, the tungsten-carbide powder of powdered alloy quality 40% on the uniformly dispersing, the granularity of tungsten-carbide powder is-40 orders～+ 300 orders.
(5) on the surface of step (4) tungsten-carbide powder, slag former on the uniformly dispersing, the granularity of slag former powder is-50 orders, and the thickness of slag former powder is 2.0mm, and the composition of slag former (mass percent) is 45%CaF
2, 35%CaO, surplus is SiO
2Do not influence the impurity of its performance.
(6) will scatter the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level pushes process furnace, and keeps horizontal positioned, through the screen work that is provided with in the stove, once puts into 6.Directly in air, heat, make the interior temperature of stove reach 1310 ℃, be incubated 20 minutes, cool to 1200 ℃ then, be incubated and come out of the stove after 5 hours, the carbine abrasion-proof composite board product is promptly strengthened.
Embodiment 3:
(1) select for use the Q195 steel plate as substrate, substrate is of a size of 0.5m * 1.0m, and thickness is 6mm.Adopt aqueous sulfuric acid chemical process cleaning substrate surface commonly used, the pickling parameter is: percent by volume is 10% aqueous sulfuric acid, and pickling temperature is 50 ℃, 15 minutes pickling time
(2) with step (1) cleaning substrate horizontal positioned well, cleaning faces up.Uniformly dispersing stripper on the good substrate surface of cleaning, the thickness of stripper is 0.2mm, the composition of stripper (mass percent) is a boric acid 100%.
(3) powdered alloy on the uniformly dispersing again on the stripper surface of step (2); The granularity of powdered alloy is-40 orders～+ 300 orders; The thickness of powdered alloy is 1mm; The composition of powdered alloy (mass percent) is: C is 3%, Cr is 28%, B is 2.5%, Si is 2.0%, Mo is 3.5%, Ni is 4.5%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
(4) on the surface of step (3) powdered alloy, the tungsten-carbide powder of powdered alloy quality 10% on the uniformly dispersing, the granularity of tungsten-carbide powder is-40 orders～+ 300 orders.
(5) on the surface of step (4) tungsten-carbide powder, slag former on the uniformly dispersing, the granularity of slag former powder is-50 orders, and the thickness of slag former powder is 0.8mm, and the composition of slag former (mass percent) is 35%CaF
2, 32%CaO, surplus is SiO
2Do not influence the impurity of its performance.
(6) will scatter the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level pushes process furnace, and keeps horizontal positioned, through the screen work that is provided with in the stove, once puts into 5.Directly in air, heat, make the interior temperature of stove reach 1300 ℃, be incubated 10 minutes, cool to 1220 ℃ then, be incubated 2 hours and come out of the stove, the carbine abrasion-proof composite board product is promptly strengthened.
Embodiment 4:
(1) select for use the Q235 mild steel plate as substrate, substrate is of a size of 1m * 2m, and thickness is 12mm.Adopt shot peening method commonly used, remove greasy dirt, the iron rust of substrate surface.
(2) with step (1) cleaning substrate horizontal positioned well, cleaning faces up.Uniformly dispersing stripper on the good substrate surface of cleaning, the thickness of stripper is 0.2mm, the composition of stripper (mass percent) is boric acid 30%, potassium fluoborate 70%.
(3) powdered alloy on the uniformly dispersing again on the stripper surface of step (2); The granularity of powdered alloy is-40 orders～+ 300 orders; The thickness of powdered alloy is 8mm; The composition of powdered alloy (mass percent) is: C is 5.0%, Cr is 48%, B is 2.3%, Si is 1.3%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
(4) on the surface of step (3) powdered alloy, the tungsten-carbide powder of powdered alloy quality 60% on the uniformly dispersing, the granularity of tungsten-carbide powder is-40 orders～+ 300 orders.
(5) on the surface of step (4) tungsten-carbide powder, slag former on the uniformly dispersing, the granularity of slag former powder is-50 orders, and the thickness of slag former powder is 1.5mm, and the composition of slag former (mass percent) is 42%CaF
2, 31%CaO, surplus is SiO
2Do not influence the impurity of its performance.
(6) will scatter the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level pushes process furnace, and keeps horizontal positioned, through the screen work that is provided with in the stove, once puts into 8.Directly in air by being lower than the initial heating of the said powdered alloy melting temperature of step (3), make that temperature reaches 1300 ℃ in the stove, be incubated 20 minutes, cool to 1210 ℃ then, be incubated and come out of the stove after 4 hours, the carbine abrasion-proof composite board product is promptly strengthened.
Embodiment 5:
(1) select for use the Q235 steel plate as substrate, substrate is of a size of 0.3m * 0.8m, and thickness is 3mm.Adopt aqueous sulfuric acid chemical process cleaning substrate surface commonly used, the pickling parameter is: percent by volume is 10% aqueous sulfuric acid, and pickling temperature is 55 ℃, 25 minutes pickling time.
(2) with step (1) cleaning substrate horizontal positioned well, cleaning faces up.Uniformly dispersing stripper on the good substrate surface of cleaning, the thickness of stripper is 0.2mm, the composition of stripper (mass percent) is a boric acid 100%.
(3) powdered alloy on the uniformly dispersing again on the stripper surface of step (2); The granularity of powdered alloy is-40 orders～+ 300 orders; The thickness of powdered alloy is 1mm; The composition of powdered alloy (mass percent) is: C is 3%, Cr is 28%, B is 2.5%, Si is 2.0%, Mo is 3.5%, Ni is 4.5%, and is surplus for Fe with do not influence the impurity of powdered alloy performance.
(4) on the surface of step (3) powdered alloy, the tungsten-carbide powder of powdered alloy quality 15% on the uniformly dispersing, the granularity of tungsten-carbide powder is-40 orders～+ 300 orders.
(5) on the surface of step (4) tungsten-carbide powder, slag former on the uniformly dispersing, the granularity of slag former powder is-50 orders, and the thickness of slag former powder is 2.5mm, and the composition of slag former (mass percent) is 50%CaF
2, 30%CaO, surplus is SiO
2Do not influence the impurity of its performance.
(6) will scatter the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level pushes process furnace, and keeps horizontal positioned, through the screen work that is provided with in the stove, once puts into 10.Directly in air, heat, make the interior temperature of stove reach 1230 ℃, be incubated 30 minutes, cool to 1150 ℃ then, be incubated 2 hours and come out of the stove, the carbine abrasion-proof composite board product is promptly strengthened.
Embodiment 6:
(1) select for use the Q195 steel plate as substrate, substrate is of a size of 0.5m * 1.0m, and thickness is 6mm.Adopt aqueous sulfuric acid chemical process cleaning substrate surface commonly used, the pickling parameter is: percent by volume is 10% aqueous sulfuric acid, and pickling temperature is 50 ℃, 15 minutes pickling time
(2) with step (1) cleaning substrate horizontal positioned well, cleaning faces up.Uniformly dispersing stripper on the good substrate surface of cleaning, the thickness of stripper is 0.2mm, the composition of stripper (mass percent) is a boric acid 100%.
(3) powdered alloy on the uniformly dispersing again on the stripper surface of step (2); The granularity of powdered alloy is-40 orders～+ 300 orders; The thickness of powdered alloy is 1mm, and the composition of powdered alloy (mass percent) is: C is 0.8%, Cr is 16%, B is 3.5%, Si is 4.0%, Fe is 12%, surplus for Ni with do not influence the impurity of powdered alloy performance.
(4) on the surface of step (3) powdered alloy, the tungsten-carbide powder of powdered alloy quality 16% on the uniformly dispersing, the granularity of tungsten-carbide powder is-40 orders～+ 300 orders.
(5) on the surface of step (4) tungsten-carbide powder, slag former on the uniformly dispersing, the granularity of slag former powder is-50 orders, and the thickness of slag former powder is 2.0mm, and the composition of slag former (mass percent) is 45%CaF
2, 32%CaO, surplus is SiO
2Do not influence the impurity of its performance.
(6) will scatter the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level pushes process furnace, and keeps horizontal positioned, through the screen work that is provided with in the stove, once puts into 5.Directly in air by being lower than the initial heating of the said powdered alloy melting temperature of step (3), make that temperature reaches 1060 ℃ in the stove, be incubated 10 minutes, cool to 990 ℃ then, be incubated 2 hours and come out of the stove, the carbine abrasion-proof composite board product is promptly strengthened.
Embodiment 7:
(1) select for use the Q345 steel plate as substrate, substrate is of a size of 1m * 1.5m, and thickness is 10mm.Adopt the mixed aqueous solution chemical process cleaning substrate surface of sulfuric acid commonly used and hydrochloric acid, the pickling parameter is: percent by volume is that 9% sulfuric acid and percent by volume are the mixed aqueous solution of 6% hydrochloric acid, 20 ℃ of pickling temperatures, 10 minutes pickling time.
(2) with step (1) cleaning substrate horizontal positioned well, cleaning faces up.Uniformly dispersing stripper on the good substrate surface of cleaning, the thickness of stripper is 0.5mm, the composition of stripper (mass percent) is boric acid 80%, borax 15%, Calcium Fluoride (Fluorspan) 5%.
(3) powdered alloy on the uniformly dispersing again on the stripper surface of step (2); The granularity of powdered alloy is-40 orders～+ 300 orders; The thickness of powdered alloy is 6mm; The composition of powdered alloy (mass percent) is: C is 0.7%, Cr is 15%, B is 2.8%, Si is 3.2%, Fe is 13.6%, and is surplus for Ni with do not influence the impurity of powdered alloy performance.
(4) on the surface of step (3) powdered alloy, the tungsten-carbide powder of powdered alloy quality 40% on the uniformly dispersing, the granularity of tungsten-carbide powder is-40 orders～+ 300 orders.
(5) on the surface of step (4) tungsten-carbide powder, slag former on the uniformly dispersing, the granularity of slag former powder is-50 orders, and the thickness of slag former powder is 1.8mm, and the composition of slag former (mass percent) is 30%CaF
2, 32%CaO, surplus is SiO
2Do not influence the impurity of its performance.
(6) will scatter the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level pushes process furnace, and keeps horizontal positioned, through the screen work that is provided with in the stove, once puts into 6.Directly in air, heat, make the interior temperature of stove reach 1080 ℃, be incubated 20 minutes, cool to 1000 ℃ then, be incubated and come out of the stove after 5 hours, the carbine abrasion-proof composite board product is promptly strengthened.
Embodiment 8:
In the present embodiment, process furnace adopts nitrogen protection, and all the other are identical with embodiment 5, repeat no more.
Embodiment 9:
In the present embodiment, process furnace adopts argon shield, and all the other are identical with embodiment 7, repeat no more.
Claims (7)
1. preparation method who strengthens the carbine abrasion-proof composition board, step comprises:
(1) selects for use big or small mild steel plate of suitable process furnace burner hearth or Low Alloy Steel Plate as substrate, adopt greasy dirt, the iron rust on any surface of mechanical means or chemical process cleaning substrate;
(2) will clear up good substrate cleaning and face up, horizontal positioned, and on cleaning face the uniformly dispersing stripper;
(3) powdered alloy on the uniformly dispersing again on the stripper surface;
(4) tungsten-carbide powder that step (3) is added alloy powder end quality 10～60% amounts is dispersed evenly to the powdered alloy surface again;
(5) slag former powder on the surperficial uniformly dispersing of tungsten-carbide powder;
(6) will be scattered with the substrate of stripper, powdered alloy, tungsten-carbide powder and slag former powder, level is put into process furnace, heat temperature raising, and the carbine abrasion-proof composition board is strengthened in preparation;
It is characterized in that:
The said mild steel plate of step (1) selects Q195 or Q235 mild steel plate; Said Low Alloy Steel Plate selects the Q345 Low Alloy Steel Plate;
The said stripper of step (2) is by percentage to the quality: 100% borax; Or 25% borax and boric acid 75%; Or 80% boric acid, 15% borax and 5% Calcium Fluoride (Fluorspan); Or 30% boric acid and 70% potassium fluoborate;
The thickness that the said stripper of step (2) scatters is 0.1-0.8mm;
The granularity of the said powdered alloy of step (3) is-40 orders～+ 300 orders; The composition of said powdered alloy is by percentage to the quality: C is 3%～3.6%, Cr is 28%～32%, B is 1.5%～2.5%, Si is 1.5%～2.5%, Mo is 3.0%～4.0%, Ni is 4.0%～6.0%, surplus for Fe with do not influence the impurity of powdered alloy performance; Its fusing point is 1200～1250 ℃, the hardness 58～62HRC of powdered alloy deposited metal; Perhaps C is 4.5%～5.0%, Cr is 45%～50%, B is 1.8%～2.3%, Si is 0.8%～1.4%, surplus for Fe with do not influence the impurity of powdered alloy performance, its fusing point is 1200～1280 ℃, the hardness 63～68HRC of powdered alloy deposited metal; Perhaps C is 0.6%～1.0%, B is 2.5%～4.5%, Si is 3.0%～5.0%, Cr is 14%～17%, Fe is no more than 15%, surplus for Ni with do not influence the impurity of powdered alloy performance; Its fusing point is 980～1020 ℃, the hardness 55-62HRC of powdered alloy deposited metal;
The thickness that the said powdered alloy of step (3) scatters is 0.1-20mm;
The granularity of the said tungsten-carbide powder of step (4) is-40 orders～+ 300 orders, usage quantity be step (3) add alloy powder end quality 20～60%;
The granularity of the said slag former powder of step (5) is-50 orders, and its composition is by percentage to the quality: CaF
2Be 30%～50%, CaO is 30%～35%, and surplus is SiO
2Do not influence the impurity of its performance, its fusing point is 1100 ℃～1200 ℃;
The thickness of the said slag former powder of step (5) is 0.5～2.5mm;
The condition that the carbine abrasion-proof composition board is strengthened in the said heat temperature raising preparation of step (6) is: to be lower than the initial heating of the said powdered alloy melting temperature of step (3); The interior temperature of stove is reached be higher than 30～50 ℃ of powdered alloy fusing points; Be incubated 10 minutes～40 minutes; Cool to following 40～60 ℃ of powdered alloy fusing point then, be incubated and come out of the stove after 0.5～6 hour, promptly get and strengthen the carbine abrasion-proof composition board.
2. prepare the method for strengthening the carbine abrasion-proof composition board according to claim 1, it is characterized in that: the said stripper of step (2) is by percentage to the quality: 100% borax; Or 25% borax and boric acid 75%; The thickness that said stripper scatters is 0.2-0.5mm.
3. prepare the method for strengthening the carbine abrasion-proof composition board according to claim 1, it is characterized in that: the thickness that the said powdered alloy of step (3) scatters is 0.5-10mm.
4. prepare the method for strengthening the carbine abrasion-proof composition board according to claim 1, it is characterized in that: the said tungsten-carbide powder usage quantity of step (4) is 20%～40% of a powdered alloy quality.
5. prepare the method for strengthening the carbine abrasion-proof composition board according to claim 1, it is characterized in that: the said slag former powder of step (5) composition is by percentage to the quality: 35%～45%CaF
2, 30%～32%CaO, surplus is SiO
2Do not influence the impurity of its performance; The thickness that said slag former powder scatters is 1.0mm-2.0mm.
6. prepare the method for strengthening the carbine abrasion-proof composition board according to claim 1; It is characterized in that: the condition that the carbine abrasion-proof composition board is strengthened in the preparation of the said heat temperature raising of step (6) is: heating makes in the stove temperature reach to be higher than 30～40 ℃ of powdered alloy fusing points; Be incubated 20 minutes～30 minutes; Cool to following 40～50 ℃ of powdered alloy fusing point then, be incubated and come out of the stove after 2～4 hours, promptly get and strengthen the carbine abrasion-proof composition board.
7. prepare the method for strengthening the carbine abrasion-proof composition board according to claim 1; It is characterized in that: when the said substrate level that is scattered with stripper, powdered alloy, tungsten-carbide powder and slag former powder of step (6) is put into process furnace; Can be according to process furnace burner hearth space; Screen work is set in stove, the disposable polylith of said substrate is put into carried out the heat temperature raising processing on the stove screen work.
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| CN102673025A (en) * | 2011-03-07 | 2012-09-19 | *** | Metal long-tube-shaped product with tungsten carbide inner surface layer |
| CN104029460A (en) * | 2014-06-13 | 2014-09-10 | 苏州汉力新材料有限公司 | Manufacturing method of wear-resistant composite metal material |
| CN104044310A (en) * | 2014-06-13 | 2014-09-17 | 苏州汉力新材料有限公司 | Composite metal material with excellent wear resistance |
| CN105063280A (en) * | 2015-08-24 | 2015-11-18 | 宁夏太阳镁业有限公司 | Slagging medium and preparation method thereof |
| CN108034942A (en) * | 2017-12-01 | 2018-05-15 | 马鞍山市鑫龙特钢有限公司 | It is a kind of to improve hard alloy coating and the processing method of high tenacity carbon steel bond strength |
| CN113249656B (en) * | 2021-05-11 | 2022-04-12 | 江阴市瑞华机械制造有限公司 | Anti-sticking wear-resistant composite steel plate and preparation method thereof |
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