CN102337536A - Preparation technology for in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on metal plate surface layer - Google Patents

Preparation technology for in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on metal plate surface layer Download PDF

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CN102337536A
CN102337536A CN201110330708XA CN201110330708A CN102337536A CN 102337536 A CN102337536 A CN 102337536A CN 201110330708X A CN201110330708X A CN 201110330708XA CN 201110330708 A CN201110330708 A CN 201110330708A CN 102337536 A CN102337536 A CN 102337536A
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steel plate
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sheet metal
surface layer
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CN102337536B (en
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王发展
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Xian University of Architecture and Technology
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Abstract

The invention discloses a preparation technology for an in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on a metal plate surface layer, which comprises the following steps of: carrying out surface rust removal to a metal plate which needs to be subjected to surface layer reinforcement; then, carrying out surface layer recarburization processing on the steel plate; coating metal tungsten powder on the surface of the steel plate; then, coating one layer of heat-insulation coating on the surface of the steel plate coated with the metal tungsten powder; quickly melting the steel plate surface layer by a high-frequency sensor; after the surface layer is solidified, removing the coating layer on the surface layer of the plate material; and finally, obtaining the in-situ synthesis tungsten carbide particle reinforced alloy steel plate material. The alloy steel plate material not only keeps the metal toughness and plastics characteristics of steel plate base material metal but also has higher abrasion resistance. The thickness of the WC (Wolfram Carbide) composite layer can be 1-2mm, and the hardness HRC (Rockwell hardness) is 56-60. The alloy steel plate material has the performances that the alloy steel plate material can deform and can be welded and the like, and the alloy steel plate material can be directly curled, deformed, cut and punched and can be processed by other machining links like the steel plate to be processed into various engineering components (such as pipelines and the like). The in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer has the advantages of low cost and the like and is easy to industrially produce on a large scale.

Description

Original position synthetic tungsten carbide particle in metal sheet top layer is strengthened complex abrasion-proof layer preparation technology
Technical field
The present invention relates to a kind of preparation of wearing layer, original position synthetic tungsten carbide particle in particularly a kind of sheet metal top layer is strengthened the preparation technology of complex abrasion-proof layer.
Background technology
Wear-resisting steel plate is meant specializes in the extraordinary plate product that uses under the big area wear working condition condition.Wear-resisting steel plate is widely used in industries such as metallurgy, cement, mine, electric power.For example, the application in metallurgy industry has: chute, blower fan, scale hooper, powder separating machine blade, slide plate, slagging-off pipeline, State of Blast Furnace liftout bucket, pump case, crusher parts, truck goods slot liner plate, the fan-shaped access panel of blast furnace, slag scuff panel, sinter machine high temperature mineral aggregate chute etc.Application in cement industry has: material scraping plate, scraper-trough conveyer, gas deflector cone, turning vane, cleaning shaft, remove slag chute, building stones, mineral aggregate crusher and hit liner plate, roll squeezer side plate, various chassis, vibratory screening apparatus, pump case, grinding machine liner, crusher part, tower shaft kiln cat head etc.Application in mine industry has: the pipeline of plate, feeding groove, hopper, Jing Kuang lifting skip bucket, washery, chute, dumping plough liner plate, shield engine liner plate, convey coal pipe, elbow etc. in the cone abrasion-proof backing block of [bucket, the scraper-type coal conveyor [line.Application in power sector has: fan blade, burner pipeline, stacker-reclaimer hopper, feed bin liner plate, coal pulverizer liner plate, coal dust transfer lime, pulverized coal distributor dividing plate, the equipment liner plate of unloading coal, blower mill hit liner plate, feeding groove and hopper liner etc.
At present, wear-resisting steel plate preparation commonly used has three kinds: (1) casting wear-resistant steel plate; (2) alloy quenching wear-resisting steel plate; (3) complex abrasion-proof steel plate.Casting wear-resistant steel plate and alloy quenching wear-resisting steel plate integral body are single material still, are difficult to accomplish comprehensive unifications such as intensity, toughness, plasticity, the optimization that especially can not accomplish wear resistance and economic performance.The complex abrasion-proof steel plate is exactly at toughness, the plasticity plate product processed through the compound certain thickness hardness of overlaying method alloy wear-resisting layer higher, high abrasion resistance of ordinary low-carbon steel or surface of low-alloy steel preferably.The complex abrasion-proof steel plate is made up of mild steel plate and alloy wear-resisting layer two portions.By matrix the over-all propertieies such as intensity, toughness and plasticity of resisting external force are provided during work, provide by the alloy wear-resisting layer and satisfy the wear resisting property of specifying the operating mode demand.Be metallurgical binding between wear-resisting steel plate alloy wear-resisting layer and the substrate.Through specific equipment, adopt automatic soldering technique, high firmness self-shield alloy welding wire is welded on the substrate equably, compound number of plies one deck is extremely two-layer so that multilayer.The shortcoming of this technology is: because alloy shrinkage than different, even transverse crack occurs easily, this is the remarkable shortcoming of built-up welding complex abrasion-proof steel plate in the recombination process.In addition, same one deck wearing layer hardness of this technology formation is inhomogeneous.At present, the hardfacing alloy wearing layer is main with Chrome metal powder mainly, also adds other alloy ingredients such as manganese, molybdenum, niobium, nickel simultaneously.
At present, the technology at surface of steel plate formation wearing layer also has: cladding laser surfaces method, oxyacetylene welding method, plasma spraying method etc.Cladding laser surfaces method complex equipments, investment is big, and the cladding laser surfaces wearing layer is too thin.The surface layer abrasion-proof layer of oxyacetylene welding method preparation is second-rate.The induction alternating magnetic field can produce inductive emf in workpiece, inductive emf causes forming in the upper layer eddy current of sealing.Induction frequencies is high more, and then the thickness of zone of heating is thin more.Therefore, utilize induction heating to prepare wearing layer at surface of steel plate.But at present reported method all is to be coated with the base-material that is covered with the identical material of wearing layer at surface of steel plate earlier, and then induction heating makes its fusing and at the new wearing layer of the additional formation one deck of surface of steel plate.
Wear-resisting steel plate has casting wear-resistant steel plate, alloy quenching wear-resisting steel plate and complex abrasion-proof steel plate in the market.The plate product that the complex abrasion-proof steel plate is generally processed through the compound certain thickness hardness of overlaying method alloy wear-resisting layer higher, high abrasion resistance.The shortcoming of this technology is: because alloy shrinkage than different, even transverse crack occurs easily, this is the remarkable shortcoming of built-up welding complex abrasion-proof steel plate in the recombination process.In addition, same one deck wearing layer hardness of this technology formation is inhomogeneous.At present, the hardfacing alloy wearing layer is main with Chrome metal powder mainly, also adds other alloy ingredients such as manganese, molybdenum, niobium, nickel simultaneously.At present, the technology at surface of steel plate formation wearing layer also has: cladding laser surfaces method, oxyacetylene welding method, plasma spraying method etc.Cladding laser surfaces method complex equipments, investment is big, and the cladding laser surfaces wearing layer is too thin.The surface layer abrasion-proof layer of oxyacetylene welding method preparation is second-rate.
Summary of the invention
The objective of the invention is to, propose the production technique that original position synthetic tungsten carbide particle in a kind of sheet metal top layer is strengthened complex abrasion-proof laminate material, this explained hereafter efficient is high, can directly utilize widely used in the market various steel alloy sheet material.
In order to realize above-mentioned task, the present invention takes following technical solution to be achieved:
Original position synthetic tungsten carbide particle in a kind of sheet metal top layer is strengthened the preparation technology of complex abrasion-proof layer, it is characterized in that this technology is carried out according to the following steps:
1) at first the sheet metal that will carry out surface strengthening is carried out surface derusting;
2) the sheet metal surface-coated one deck carburelant after will eliminating rust, treat the carburelant drying after, apply one deck 1.5mm~2.0mm heat insulation coating more above that;
Described carburelant is made up of USP Kosher and fine graphite powders, and transfers to scattered paste shape with alcohol or acetone;
Described temperature coating is made up of aluminium silicate powder and water glass, and aluminium silicate powder accounts for 45wt%;
3) will put into high-frequency inductor through the sheet metal that is coated with carburelant and heat insulation coating and carry out top layer carburetting processing, the temperature of top layer carburetting is controlled between 950 ℃~1000 ℃;
4) after top layer carburetting is finished dealing with; Be coated in thin metal tungsten powder the surface of sheet metal again; Apply one deck heat insulation coating afterwards more above that, in high-frequency inductor, zone fusing and rapid solidification are fast carried out in the sheet metal top layer then, high-frequency induction rim surface zona melting temperatur is controlled in 20 ℃~30 ℃ scopes that are higher than the metallic substance fusing point; The zone is molten into 2-3 time fast, promptly obtains the sheet metal of tungsten carbide particle surface strengthening.
The present invention mainly prepares a kind of wolfram varbide (WC) particle surface strengthening layer to the steel or the various alloy steel products top layer of commercialization, improves Wear Resistance of Metal Materials greatly, also keeps the performance of original material simultaneously.The surface abrasion resistance metal bar dense structure of the carbide particle surface strengthening of producing.Owing to be original position synthetic carbide, so carbide wild phase and matrix metal interface bond strength height and be evenly distributed.This material can be good at solving the high-wearing feature of material, also has higher intensity and flexible contradiction simultaneously concurrently.This explained hereafter efficient is high, save energy.This top layer complex abrasion-proof steel plate has deformable and performance such as can weld, and can directly carry out processing links such as Texturized, cutting and punching as steel plate, is processed into various engineering parts (like pipeline etc.).This invented technology also have production cost low, be easy to advantages such as mass industrialized production.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.
Embodiment
Show after deliberation; Wolfram varbide (WC) particle is because it has higher specific rigidity, specific modulus, low thermal coefficient of expansion and good thermostability, wear resistance; Therefore utilize wolfram varbide (WC) as strengthening phase, prepare on the top layer of steel plate and have the certain thickness composite bed that contains wolfram varbide (WC) particle wild phase, through the reaction between W element and the C; Synthesize the hard wild phase WC of high firmness, high elastic coefficient at the metal-based internal in-situ, thereby reach the purpose of reinforced metal matrix.Can be good at solving the high-wearing feature of material, also have higher intensity and flexible contradiction simultaneously concurrently.
The present invention is on the basis of drawing traditional wolfram varbide (WC) original position synthesis particle metal-base composites preparation method; And according to molten theoretical, theoretical, the floating scheduling theory of particle of rapid solidification of top layer induction zone; At first handle, be coated in metal tungsten powder the surface of steel plate again, and zone fusing is fast carried out on the steel plate top layer through high-frequency inductor through steel plate being carried out top layer carburetting; Form solution layer on the steel plate top layer; Make carbon and tungsten powder that chemical reaction and fully diffusion take place in solution layer, and original position synthesizing carbide particle, obtain the series alloy steel board of original position synthetic tungsten carbide particle surface strengthening at last.
Embodiment 1: the tungsten carbide granule reinforced steel matrix skin layer composition metal plate is produced
Present embodiment utilizes micron order wolfram varbide (WC) particle; Through the reaction between W element and the C; Hard wild phase WC at the synthetic high firmness of metal-based internal in-situ, high elastic coefficient; Thereby forming with the high-intensity high-tenacity steel alloy is matrix, is the WC particle/metal-based composite bar of wear-resistant hard phase with certain volume fractional WC particle.So both kept metallic substance toughness, characteristics that plasticity is good, and can bring into play the good characteristics of high firmness strongthener wear resistance again, so application prospect is very wide.And, can control the thickness of size, distribution, quantity and the composite bed of enhanced granule WC effectively through choose reasonable preparation technology.
The tungsten carbide granule reinforced steel matrix skin layer composition metal plate production operation process of present embodiment is following:
Earlier the metal foil that will carry out surface strengthening is carried out surface derusting (pickling), at surface-coated one deck carburelant of metal foil, carburelant is made up of USP Kosher and fine graphite powders, and transfers to scattered paste shape with alcohol or acetone then.After treating the carburelant drying, apply one deck heat insulation coating more above that.The thickness of heat insulation coating generally is controlled at 1.5-2.0mm for well.Heat insulation coating is made up of aluminum silicate insulation material powder and water glass, and aluminium silicate powder accounts for 45wt%, and the granularity of the aluminum silicate insulation material powder that the preparation heat insulation coating is used is the 500-800 order.Handle through high-frequency inductor heating carrying out top layer carburetting.Top layer carburetting temperature is controlled to be 950 ℃~1000 ℃; After carburetting is finished dealing with, be coated in thin metal tungsten powder the surface of steel plate again, apply one deck heat insulation coating afterwards more above that, zone fusing and rapid solidification are fast carried out in the steel plate top layer through high-frequency inductor.The method that applies tungsten powder is, thin tungsten powder mixed with USP Kosher, and transfer to scattered paste shape with alcohol or acetone, then it is coated in surface of steel plate.The particle diameter of metal tungsten powder is 800-1000 order (18-13 μ m), and definite principle of tungsten powder consumption is a carbon: tungsten=1: 1, ratio are mol ratio.And high-frequency induction rim surface zona melting temperatur is controlled in the scope of body material fusing point+20 ℃~30 ℃.The operating frequency of high-frequency induction equipment is 200~300kHz, and radio-frequency induction coil keeps water-cooled.Zone fusing fast is generally 2-3 time.The zone through supersolidification, through working methods such as cutting, mechanical alignments, meets the requirements of size after melting fast and accomplishing again, finally obtains the steel alloy sheet material of tungsten carbide particle surface strengthening.
The purpose of high-frequency inductor heating is; Form solution layer on the sheet metal top layer; Make carbon and tungsten powder that chemical reaction and fully diffusion take place in solution layer, and original position synthesizing carbide particle, obtain the series metal sheet material of original position synthetic tungsten carbide particle surface strengthening at last.The composite sheet that forms through working methods such as cuttings, meets the requirements of size again.
The tungsten carbide granule reinforced steel matrix skin layer composition metal plate of present embodiment prepared has the following advantages:
(1) sheet metal is through regional melting, and the tungsten carbide particle of formation is strengthened complex abrasion-proof layer thing shrinkage cavity and existed with crackle, and the interior WC particle of composite bed is tiny, be evenly distributed, and combines well with basal body interface.Original position synthetic tungsten carbide particle in this top layer is strengthened toughness and the plasticity characteristics that top layer complex abrasion-proof steel plate had both kept the substrate of steel plate metal, has higher wear resistance again.
(2) this technology mainly strengthens the compound wear resistance that improves material in top layer through commercial steel alloy sheet material being carried out WC particle, and the thickness of WC composite bed can reach 1-2mm, hardness HRC56-60.
(3) technology has the technological flexibility height, suitability is wide, production cost is low, be easy to advantages such as mass industrialized production.Use this technology, the WC particle that can produce present plurality of specifications (different thickness, different substrate materials) with a set of equipment fully strengthens the top layer composition metal plate.Dimensions can be adjusted according to client's demand fully.
(4) sheet metal of this tungsten carbide particle surface strengthening has deformable and performance such as can weld, and can directly carry out processing links such as Texturized, cutting and punching as steel plate, is processed into various engineering parts (like pipeline etc.).This invented technology also have production cost low, be easy to advantages such as mass industrialized production.

Claims (4)

1. the preparation technology of the synthetic tungsten carbide particle reinforcement of a sheet metal top layer original position complex abrasion-proof layer is characterized in that, carries out according to the following steps:
1) at first the sheet metal that will carry out surface strengthening is carried out surface derusting;
2) the sheet metal surface-coated one deck carburelant after will eliminating rust, treat the carburelant drying after, apply one deck 1.5mm~2.0mm heat insulation coating more above that;
Described carburelant is made up of USP Kosher and fine graphite powders, and transfers to scattered paste shape with alcohol or acetone;
Described temperature coating is made up of aluminium silicate powder and water glass, and aluminium silicate powder accounts for 45wt%;
3) will put into high-frequency inductor through the sheet metal that is coated with carburelant and heat insulation coating and carry out top layer carburetting processing, the temperature of top layer carburetting is controlled between 950 ℃~1000 ℃;
4) after top layer carburetting is finished dealing with; Be coated in thin metal tungsten powder the surface of sheet metal again; Apply one deck heat insulation coating afterwards more above that, in high-frequency inductor, zone fusing and rapid solidification are fast carried out in the sheet metal top layer then, high-frequency induction rim surface zona melting temperatur is controlled in 20 ℃~30 ℃ scopes that are higher than the metallic substance fusing point; The zone is molten into 2-3 time fast, promptly obtains the sheet metal of tungsten carbide particle surface strengthening.
2. technology as claimed in claim 1 is characterized in that the method for said coating tungsten powder is; Thin tungsten powder is mixed with USP Kosher; And transfer to scattered paste shape with alcohol or acetone, and then it being coated in the sheet metal surface, the particle diameter of thin tungsten powder is 18 μ m~13 μ m; Definite principle of thin tungsten powder consumption is a carbon: tungsten=1: 1, ratio are mol ratio.
3. technology as claimed in claim 1 is characterized in that, the granularity of the aluminium silicate powder that the preparation heat insulation coating is used is the 500-800 order.
4. technology as claimed in claim 1 is characterized in that, the operating frequency of said high-frequency induction equipment is 200kHz~300kHz, and radio-frequency induction coil keeps water-cooled.
CN 201110330708 2011-10-26 2011-10-26 Preparation technology for in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on metal plate surface layer Expired - Fee Related CN102337536B (en)

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Cited By (14)

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CN103742094A (en) * 2013-12-27 2014-04-23 中国石油天然气股份有限公司 Wear-resistant expansion cone and machining method thereof
CN103742093A (en) * 2013-12-27 2014-04-23 中国石油天然气股份有限公司 Bionic wear-resistant expansion cone and manufacturing method thereof
CN104525910A (en) * 2014-11-18 2015-04-22 西安理工大学 Wear-resistant pipe and preparation method thereof
CN104727825A (en) * 2015-03-31 2015-06-24 罗云 Cutting tool structure of shield tunneling machine
CN106042767A (en) * 2016-07-01 2016-10-26 深圳华品轨道交通有限公司 Wear-resisting antiskid plate
CN106906468A (en) * 2017-03-27 2017-06-30 德施普科技发展温州有限公司 A kind of anticorrosive boiler tube and preparation method thereof
CN109023354A (en) * 2018-09-29 2018-12-18 西安文理学院 A kind of tungsten carbide gradient composite coating and preparation method thereof
CN109055685A (en) * 2018-09-29 2018-12-21 西安文理学院 A kind of vanadium carbide gradient composite coating and preparation method thereof
CN109112534A (en) * 2018-09-29 2019-01-01 西安文理学院 A kind of high density titanium carbide composite anti-wear coating and preparation method thereof
CN109234733A (en) * 2018-09-29 2019-01-18 西安文理学院 A kind of chromium carbide gradient composite coating and preparation method thereof
CN109252158A (en) * 2018-09-29 2019-01-22 西安文理学院 A kind of tantalum carbide gradient composite coating and preparation method thereof
CN109252159A (en) * 2018-09-29 2019-01-22 西安文理学院 A kind of niobium carbide gradient composite coating and preparation method thereof
CN113151820A (en) * 2021-03-03 2021-07-23 江苏翰纳激光科技有限公司 Preparation method for in-situ synthesis of carbide-reinforced toughened metal-based composite coating by taking expanded graphite as carbon source
CN113652685A (en) * 2021-07-30 2021-11-16 山东莱钢永锋钢铁有限公司 Roller surface strengthening process

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Publication number Priority date Publication date Assignee Title
CN103742094A (en) * 2013-12-27 2014-04-23 中国石油天然气股份有限公司 Wear-resistant expansion cone and machining method thereof
CN103742093A (en) * 2013-12-27 2014-04-23 中国石油天然气股份有限公司 Bionic wear-resistant expansion cone and manufacturing method thereof
CN104525910A (en) * 2014-11-18 2015-04-22 西安理工大学 Wear-resistant pipe and preparation method thereof
CN104727825A (en) * 2015-03-31 2015-06-24 罗云 Cutting tool structure of shield tunneling machine
CN106042767A (en) * 2016-07-01 2016-10-26 深圳华品轨道交通有限公司 Wear-resisting antiskid plate
CN106906468A (en) * 2017-03-27 2017-06-30 德施普科技发展温州有限公司 A kind of anticorrosive boiler tube and preparation method thereof
CN109112534A (en) * 2018-09-29 2019-01-01 西安文理学院 A kind of high density titanium carbide composite anti-wear coating and preparation method thereof
CN109055685A (en) * 2018-09-29 2018-12-21 西安文理学院 A kind of vanadium carbide gradient composite coating and preparation method thereof
CN109023354A (en) * 2018-09-29 2018-12-18 西安文理学院 A kind of tungsten carbide gradient composite coating and preparation method thereof
CN109234733A (en) * 2018-09-29 2019-01-18 西安文理学院 A kind of chromium carbide gradient composite coating and preparation method thereof
CN109252158A (en) * 2018-09-29 2019-01-22 西安文理学院 A kind of tantalum carbide gradient composite coating and preparation method thereof
CN109252159A (en) * 2018-09-29 2019-01-22 西安文理学院 A kind of niobium carbide gradient composite coating and preparation method thereof
CN109252158B (en) * 2018-09-29 2020-08-04 西安文理学院 Tantalum carbide gradient composite coating and preparation method thereof
CN109252159B (en) * 2018-09-29 2020-08-04 西安文理学院 Niobium carbide gradient composite coating and preparation method thereof
CN109234733B (en) * 2018-09-29 2020-08-04 西安文理学院 Chromium carbide gradient composite coating and preparation method thereof
CN113151820A (en) * 2021-03-03 2021-07-23 江苏翰纳激光科技有限公司 Preparation method for in-situ synthesis of carbide-reinforced toughened metal-based composite coating by taking expanded graphite as carbon source
CN113151820B (en) * 2021-03-03 2023-01-20 江苏翰纳激光科技有限公司 Preparation method for in-situ synthesis of carbide-reinforced toughened metal-based composite coating by taking expanded graphite as carbon source
CN113652685A (en) * 2021-07-30 2021-11-16 山东莱钢永锋钢铁有限公司 Roller surface strengthening process

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