CN101078084A - Tungsten carbide particle enhanced steel/iron-base composite wearable plate and preparation technique thereof - Google Patents
Tungsten carbide particle enhanced steel/iron-base composite wearable plate and preparation technique thereof Download PDFInfo
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Abstract
The patent is about a kind of steel/iron group complex wear resistant board enhanced by tungsten carbide grain and the preparation technology of it. It is made by the compound of tungsten carbide hard grain and tenacious steel/ iron group. The volume percent of tungsten carbide grain is -2.5-+2mm: 30-40%; -2-+1mm: 30-40%; -1- +0.3mm: 25-30%, the steel/iron groups will infiltrate into the interspace of the tungsten carbide hard grains, after they has been melt, the thickness of the composite layer is 4-5mm. This patent has also published the preparation technology of it, adhesion agent is not need according to this patent, the complex board gained not only owns high rigidity and great flexibility module as cream grain, but also owns the high tenacity of metal, and it greatly improves the shock abrasion resistance ability of the wear resistance board.
Description
Technical field
The present invention relates to a kind of preparation technology of composite wearable plate, the preparation technology who particularly relates to a kind of tungsten carbide particle enhanced steel/iron-base composite wearable plate, this sheet material mainly is used in the manufacturing of operational outfit of industries such as metallurgy, mine, electric power, oil, building materials, coal.
Background technology
In the manufacturing of the operational outfit of industries such as metallurgy, mine, electric power, oil, building materials, coal, annually need a large amount of high-abrasive materials, but often because the singularity of device structure, complicacy.Can't produce required equipment with traditional processing method, have to adopt the form welding of sheet material.Up to the present, the structural part that is welded by sheet material still is the main means in producing apparatus aspect, so the demand of sheet material is very big.And composite-material abrasive sheet material in the market adopts the form preparation of build-up wear-resistant layer mostly, production in batches, and specialized apparatus must be arranged, and cost is higher, therefore how to reduce cost, and improves the over-all properties of material simultaneously, becomes the certainty of material development.Recent two decades comes, particles reiforced metal-base composition is subjected to people's attention, the characteristics that not only have Plastic Deformation, good toughness, and has the big advantage of hardness height, rigidity of ceramic particle simultaneously, thereby demonstrate single metallic matrix or ceramic particle incomparable excellent properties, so particles reiforced metal-base composition generally as wear-resisting, anti-corrosion, heat-stable material is developed and use.Because its particular performances is described as " material of 21 century ".Because the wear out failure of material is mostly from surface germinating crackle and fatigue, particles reiforced metal-base composition if can be applied to the surface of material, obtain the component that surface abrasion resistance is excellent, the core plasticity and toughness are good, all be very useful to enhancing productivity or economizing on resources the work-ing life of prolonged mechanical component.
The research of metal current based composites focuses mostly on magnesium, aluminium etc. are light metal-based, along with preparation technology's improvement and industrial application and the requirement that economizes on resources.The steel/iron-base composite study is extensively launched, because fusing point height, hardness height, Young's modulus height, the hot strength of tungsten carbide particle well easily reach thermostability characteristics preferably, and steel iron-based to the wettability preferably of WC, therefore tungsten carbide particle enhanced steel iron base composite material, become the focus of novel material research and development in recent years.
Technology about the tungsten carbide grain reinforced metal base composite sheet is more, but all has certain defective for sheet material compound.Casting infiltration must consider how hard is reserved mutually and needed the enhanced position, and uses resin glue, causes complex process, and casting defect is more; Vaccum sintering process is had relatively high expectations to vacuum, and bigger workpiece can't be realized; Centrifugal casting only is fit to the workpiece of preparation solid of revolution; And physical chemistry vapour deposition, electrodip process are not suitable for for the wearing layer of macroscopic thickness very.
Summary of the invention
The technical problem to be solved in the present invention is, overcome the deficiencies in the prior art, a kind of tungsten carbide particle enhanced steel/iron-base composite-material abrasive sheet material preparation technology is provided, do not need binding agent in the preparation, the gained composite sheet not only has high rigidity, the high elastic coefficient of ceramic particle, the excellent toughness that also has metal simultaneously can improve the impact wear resistance of wearable plate greatly.
For solving the problems of the technologies described above, the technical scheme that the present invention deals with problems is such: it is composited with steel/iron-base toughness mutually by the wolfram varbide hard-phase particles, and the volume ratio of components of tungsten carbide particle is :-2.5～+ 2mm:30～40%;-2～+ 1mm:30～40%;-1～+ 0.3mm:25～30%, be penetrated into wolfram varbide hard-phase particles gap after the fusing of steel/iron-base body, be cooled to room temperature, obtain the wearable plate that composite bed thickness is 4～5mm.
Another technical problem that the present invention will solve is, a kind of tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology is provided, do not need binding agent when using this prepared tungsten carbide particle enhanced steel/iron-base composite-material abrasive sheet material, adopt Medium frequency induction rapid heating fusing matrix, the composite efficiency height.
For solving the problems of the technologies described above, the technical scheme that the present invention deals with problems is such:
This preparation technology comprises the steps:
(1), make the sand mold mould, the sand mold mould is wanted compacting according to the size of required sheet material;
(2), with tungsten carbide particle ratio of components by volume :-2.5～+ 2mm:30～40%;-2～+ 1mm:30～40%;-1～+ 0.3mm:25～30%, mixing and ball milling 6 hours obtain uniform WC powder mixture; The WC powder mixture is spread the bottom that is overlying on the sand mold groove uniformly;
(3), according to the size of sand mold mould, the steel/iron-base tough metal sheet material of intercepting respective length and width, and tough metal sheet material carried out the steel ball shot peening is removed the greasy dirt and the zone of oxidation on surface, lie against then the WC powder mixture above;
(4), the sand mold that places is placed in the induction heating case that has protective atmosphere, whole sand mold and inductor block are in relative horizontal movement state, induction heating makes the fusing of steel/iron-base sheet material, penetrates between the tungsten carbide particle, obtains abrasion-proof composite plate after the cooling.
The present invention is no external pressure infiltration, and the thickness that the bottom of sand mold groove is covered in step (2) WC powder mixture shop is 2～3mm.The thickness of the described abrasion-proof composite plate wearing layer of step (4) is 4～5mm.
For fear of oxidation, the described protective atmosphere of step (4) is a nitrogen.
The described induction power supply frequency of step (4) is 6500～7000Hz, power 165～180Kw/h.
Travelling speed 90～the 100mm/min of the described sand mold of step (4) and the relative horizontal movement state of inductor block.
The steel/iron-base tough metal sheet material of described intercepting respective length of step (3) and width, its thickness is than the little 1～2mm of required composite wearable plate thickness.
The invention has the beneficial effects as follows:
1, the present invention has given full play to the high rigidity of tungsten carbide particle, high elastic coefficient, and with the excellent toughness and the plasticity characteristics of steel/iron-base metallic substance, can improve the over-all properties of wearable plate greatly.
2, composite sheet of the present invention adopts cheap toughness and the good common substrate of plasticity, and its cost is lower.
3, because the steel/iron-base melt is slowly to be penetrated into wolfram varbide hard-phase particles gap, the steel/iron-base melt can not impact to tungsten carbide particle, does not have segregation phenomena, so do not use organic binder bond.
4, the present invention adopts Frequency Induction Heating, can local fast heating melt matrix, composite efficiency height.
5, since the complex abrasion-proof layer less than 5mm, melt relies on the effect of gravity, can be penetrated into the gap of tungsten-carbide powder, so do not need impressed pressure.
6, the present invention is because sintering velocity is fast, and degree of oxidation is lower, so do not need large-scale vacuum unit, can carry out under protection of nitrogen gas, and major equipment is an induction heating equipment and an industrial Nitrogen plant, so facility investment is less.
7, the present invention is as long as change the size of inductor block and change the relative travelling speed of inductor block and sheet material, can realize the sheet material manufacturing of different big or small and thickness.
Description of drawings
Fig. 1 is a sand mold mould front view of the present invention;
Fig. 2 is covered with the sand mold mould synoptic diagram of WC powder for the present invention shop;
Sand mold mould synoptic diagram when Fig. 3 is induction sintering;
The composite sheet synoptic diagram that Fig. 4 finishes for the present invention's preparation.
Embodiment
Embodiment 1:
Below in conjunction with accompanying drawing the present invention is described in further detail:
With preparation size is that to strengthen the high manganese steel base composite material wearable plate be example for the tungsten carbide particle of 50 * 15 * 1000mm.
The step of preparation process of present embodiment is as follows:
A: make the sand mold mould, the overall dimensions of sand mold mould (1) are 70 * 30 * 1100mm, and for guaranteeing the carrying out of subsequent step, the size of medial launder should be slightly larger than required composite sheet and be of a size of: 52 * 17 * 1004mm.As shown in Figure 1, brush steel moulder's paint, dry for standby.
B: WC powder is-2.5 by volume～+ 2mm:30%;-2～+ 1mm:40%;-1～+ composition of 0.3mm:30% carried out mixing and ball milling 6 hours, and mixed powder is overlying on the bottom of sand mold groove in the shop uniformly, with the thickness of vernier callipers control WC powder layer (2) between 2～3mm, as shown in Figure 2.
C: intercepting 50 * 14 * 1000mm thick high manganese steel sheet (3), after the shot peening, be placed on the tungsten-carbide powder layer above; Then whole sand mold mould is pushed in the guard box (5) that has guide rail (4), feed nitrogen (6) and nitrogen and be in flow state, as shown in Figure 3.
D: place inductor block (7) on high manganese steel sheet, for the surface action that makes full use of induction heating with prevent that inductor block from being caused damage by the thermal radiation of molten steel, inductor block and high mangaenese steel have the gap of 3～4mm.Open induction power supply, frequency 6500～7000Hz, power 165～180Kw/h, induction heating melts high manganese steel sheet fast, and temperature is higher than 50 ℃ of high mangaenese steel fusing points, and it is better mobile, rely on gravity to penetrate into preferably between the tungsten carbide particle, after the fusing of the high mangaenese steel under the inductor block, sand mold mould and inductor block are produced relative tangential movement, travelling speed 90～100mm/min, after about 10 minutes, stop heating, be cooled to room temperature, open sand mold, the cleaning polishing is abrasion-proof composite plate.As shown in Figure 4.
Embodiment 2:
With preparation size is that to strengthen 45# base steel composite material wearable plate be example for the tungsten carbide particle of 70 * 20 * 1000mm.
The step of preparation process of present embodiment is as follows:
A: make the sand mold mould, the overall dimensions of sand mold mould (1) are 100 * 40 * 1100mm, and for guaranteeing the carrying out of subsequent step, the size of medial launder should be slightly larger than required composite sheet and be of a size of: 72 * 22 * 1004mm.As shown in Figure 1, brush steel moulder's paint, dry for standby.
B: WC powder is-2.5 by volume～+ 2mm:40%;-2～+ 1mm:30%;-1～+ composition of 0.3mm:30% carried out mixing and ball milling 6 hours, and mixed powder is overlying on the bottom of sand mold groove in the shop uniformly, with the thickness of vernier callipers control WC powder layer (2) between 2～3mm, as shown in Figure 2.
C: intercepting 70 * 19 * 1000mm thick 45# steel plate (3), after the shot peening, be placed on the tungsten-carbide powder layer above; Then whole sand mold mould is pushed in the guard box (5) that has guide rail (4), feed nitrogen (6) and nitrogen and be in flow state, as shown in Figure 3.
D: place inductor block (7) on the 45# steel plate, for the surface action that makes full use of induction heating with prevent that inductor block from being caused damage by the thermal radiation of high-temperature molten steel, inductor block and 45# steel have the gap of 3～4mm.Open induction power supply, frequency 6500～7000Hz, power 165-170Kw/h, induction heating melts high manganese steel sheet fast, and temperature is higher than 50 ℃ of 45# steel fusing points, and it is better mobile, rely on gravity to penetrate into preferably between the tungsten carbide particle, after the fusing of the 45# steel under the inductor block, sand mold mould and inductor block are produced relative tangential movement, travelling speed 90mm/min, after about 10 minutes, stop heating, be cooled to room temperature, open sand mold, the cleaning polishing is abrasion-proof composite plate.As shown in Figure 4.
Embodiment 3:
With preparation size is that to strengthen rich chromium cast iron based composites wearable plate be example for the tungsten carbide particle of 70 * 20 * 1000mm.
The step of preparation process of present embodiment is as follows:
A: make the sand mold mould, the overall dimensions of sand mold mould (1) are 100 * 40 * 1100mm, and for guaranteeing the carrying out of subsequent step, the size of medial launder should be slightly larger than required composite sheet and be of a size of: 72 * 22 * 1004mm.As shown in Figure 1, brush iron casting coating, dry for standby.
B: WC powder is-2.5 by volume～+ 2mm:35%;-2～+ 1mm:40%;-1～+ composition of 0.3mm:25% carried out mixing and ball milling 6 hours, and mixed powder is overlying on the bottom of sand mold groove in the shop uniformly, with the thickness of vernier callipers control WC powder layer (2) between 2～3mm, as shown in Figure 2.
C: intercepting 70 * 19 * 1000mm thick rich chromium cast iron plate (3), after the shot peening, be placed on the tungsten-carbide powder layer above; Then whole sand mold mould is pushed in the guard box (5) that has guide rail (4), feed nitrogen (6) and nitrogen and be in flow state, as shown in Figure 3.
D: place inductor block (7) on the rich chromium cast iron plate, for the surface action that makes full use of induction heating with prevent that inductor block from being caused damage by the thermal radiation of molten steel, inductor block and 45# steel have the gap of 3～4mm.Open induction power supply, frequency 6000Hz, power 175-180Kw/h, induction heating melts high manganese steel sheet fast, and temperature is higher than 50 ℃ of rich chromium cast iron fusing points, and it is better mobile, rely on gravity to penetrate into preferably between the tungsten carbide particle, after the fusing of the rich chromium cast iron under the inductor block, sand mold mould and inductor block are produced relative tangential movement, travelling speed 100mm/min, after about 10 minutes, stop heating, be cooled to room temperature, open sand mold, the cleaning polishing is abrasion-proof composite plate.As shown in Figure 4.
Claims (10)
1, a kind of tungsten carbide particle enhanced steel/iron-base composite-material abrasive sheet material, it is characterized in that: it is composited with steel/iron-base toughness mutually by the wolfram varbide hard-phase particles, and the volume ratio of components of tungsten carbide particle is :-2.5～+ 2mm: 30～40%;-2～+ 1mm: 30～40%;-1～+ 0.3mm: 25～30%, the employing Frequency Induction Heating is penetrated into wolfram varbide hard-phase particles gap after making the fusing of steel/iron-base body.
2, tungsten carbide particle enhanced steel/iron-base composite-material abrasive sheet material according to claim 1 is characterized in that: the composite bed of this wearable plate (8) thickness is 4～5mm.
3, a kind of technology for preparing the described tungsten carbide particle enhanced steel/iron-base composite-material abrasive of claim 1 sheet material, it is characterized in that: this preparation technology comprises the steps:
(1), make the sand mold mould, the sand mold mould is wanted compacting according to the size of required sheet material;
(2), the ratio of components by volume of tungsten carbide particle :-2.5～+ 2mm: 30～35%;-2～+ 1mm: 30～40%;-1～+ 0.3mm: 25～30%, carried out abundant ball milling 6 hours, obtain uniform WC powder mixture; The WC powder mixture is spread the bottom that is overlying on the sand mold groove uniformly;
(3), according to the size of sand mold mould, the steel/iron-base tough metal sheet material of intercepting respective length and width, and tough metal sheet material carried out the steel ball shot peening is removed the greasy dirt and the zone of oxidation on surface, lie against then the WC powder mixture above;
(4), the sand mold that places is placed in the Frequency Induction Heating case that has protective atmosphere; whole sand mold and intermediate frequency inductor are in relative horizontal movement state, and Frequency Induction Heating makes the fusing of steel/iron-base sheet material, penetrates between the tungsten carbide particle; be cooled to room temperature, obtain abrasion-proof composite plate.
4, tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology according to claim 3 is characterized in that: step (2) WC powder mixture shop overlays on the sand mold trench bottom, and its thickness is 2～3mm.
5, tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology according to claim 4, it is characterized in that: the thickness of the described abrasion-proof composite plate wearing layer of step (4) is 4～5mm.
6, tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology according to claim 3, it is characterized in that: the described protective atmosphere of step (4) is a nitrogen.
7, tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology according to claim 3, it is characterized in that: the described induction power supply frequency of step (4) is 6500～7000Hz, power 165～180Kw/h.
8, tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology according to claim 3 is characterized in that: the travelling speed 90～100mm/min of the described sand mold of step (4) and the relative horizontal movement state of inductor block.
9, tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology according to claim 3 is characterized in that: the clearance distance 3～4mm of described sand mold of step (4) and inductor block.
10, tungsten carbide particle enhanced steel/iron-base composite-material abrasive preparation of plates technology according to claim 3, it is characterized in that: the steel/iron-base tough metal plate of described intercepting respective length of step (3) and width, its thickness is than the little 1～2mm of required composite wearable plate thickness.
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| CN102071360A (en) * | 2011-01-14 | 2011-05-25 | 华南理工大学 | Tungsten carbide particle-enhanced iron-based powder metallurgy material and preparation method thereof |
| CN102212821A (en) * | 2011-05-26 | 2011-10-12 | 山东大学 | Method for preparing reinforced tungsten carbide abrasion-resistant composite plate |
| CN102218615A (en) * | 2011-05-26 | 2011-10-19 | 山东大学 | Method for preparing thickened wear-resisting composite board |
| CN102352507A (en) * | 2011-10-26 | 2012-02-15 | 西安建筑科技大学 | Alloy carbide surface strengthening process for cast iron plate |
| CN102366829A (en) * | 2011-10-10 | 2012-03-07 | 陈伟军 | Casting-penetrating method of Al2O3 particle surface reinforced steel-base composite material |
| CN104525916A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Engine tappet and manufacturing method thereof |
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| CN108342607A (en) * | 2018-02-07 | 2018-07-31 | 左其福 | It is a kind of to cast or forge N, B, C and compound steel and its production method |
| CN109080237A (en) * | 2018-07-25 | 2018-12-25 | 四川皇龙智能破碎技术股份有限公司 | A kind of multilayer alloying pellet large area composite material |
| CN110195187A (en) * | 2019-05-17 | 2019-09-03 | 北京科技大学 | A kind of high elastic modulus automobile steel iron material and preparation method thereof |
| CN111070106A (en) * | 2019-12-18 | 2020-04-28 | 上海交通大学 | Surface treatment method for improving fatigue resistance of particle reinforced metal matrix composite |
| CN113005352A (en) * | 2021-02-08 | 2021-06-22 | 大连理工大学 | Method for strengthening and toughening martensitic steel by adding nano TiC |
| CN113547192A (en) * | 2021-07-08 | 2021-10-26 | 自贡硬质合金有限责任公司 | Hard alloy wear-resistant block and preparation method thereof |
| CN114480906A (en) * | 2022-02-09 | 2022-05-13 | 江苏硕展精密机械有限公司 | Tungsten carbide particle composite wear-resistant steel plate and manufacturing process thereof |
Family Cites Families (1)
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| CH633039A5 (en) * | 1977-09-06 | 1982-11-15 | Alusuisse | SURFACE LUBRICANTS FOR METAL TAPES. |
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2007
- 2007-06-27 CN CNB2007100181399A patent/CN100535162C/en not_active Expired - Fee Related
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| CN102071360A (en) * | 2011-01-14 | 2011-05-25 | 华南理工大学 | Tungsten carbide particle-enhanced iron-based powder metallurgy material and preparation method thereof |
| CN102071360B (en) * | 2011-01-14 | 2012-06-27 | 华南理工大学 | Tungsten carbide particle-enhanced iron-based powder metallurgy material and preparation method thereof |
| CN102212821A (en) * | 2011-05-26 | 2011-10-12 | 山东大学 | Method for preparing reinforced tungsten carbide abrasion-resistant composite plate |
| CN102218615A (en) * | 2011-05-26 | 2011-10-19 | 山东大学 | Method for preparing thickened wear-resisting composite board |
| CN102212821B (en) * | 2011-05-26 | 2012-07-25 | 山东大学 | Method for preparing reinforced tungsten carbide abrasion-resistant composite plate |
| CN102218615B (en) * | 2011-05-26 | 2012-10-03 | 山东大学 | Method for preparing thickened wear-resisting composite board |
| CN102366829A (en) * | 2011-10-10 | 2012-03-07 | 陈伟军 | Casting-penetrating method of Al2O3 particle surface reinforced steel-base composite material |
| CN102352507A (en) * | 2011-10-26 | 2012-02-15 | 西安建筑科技大学 | Alloy carbide surface strengthening process for cast iron plate |
| CN104525916A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Engine tappet and manufacturing method thereof |
| CN107299286A (en) * | 2017-05-31 | 2017-10-27 | 成都小柑科技有限公司 | A kind of inorganic nano-particle strengthens ferroalloy composite |
| CN107904511A (en) * | 2017-12-05 | 2018-04-13 | 河南工业大学 | Ceramic particle Fe radicle enhancing composite material and preparation method thereof and purposes |
| CN108342607A (en) * | 2018-02-07 | 2018-07-31 | 左其福 | It is a kind of to cast or forge N, B, C and compound steel and its production method |
| CN109080237A (en) * | 2018-07-25 | 2018-12-25 | 四川皇龙智能破碎技术股份有限公司 | A kind of multilayer alloying pellet large area composite material |
| CN110195187A (en) * | 2019-05-17 | 2019-09-03 | 北京科技大学 | A kind of high elastic modulus automobile steel iron material and preparation method thereof |
| CN110195187B (en) * | 2019-05-17 | 2020-06-05 | 北京科技大学 | High-elasticity-modulus automobile steel material and preparation method thereof |
| CN111070106A (en) * | 2019-12-18 | 2020-04-28 | 上海交通大学 | Surface treatment method for improving fatigue resistance of particle reinforced metal matrix composite |
| CN113005352A (en) * | 2021-02-08 | 2021-06-22 | 大连理工大学 | Method for strengthening and toughening martensitic steel by adding nano TiC |
| CN113547192A (en) * | 2021-07-08 | 2021-10-26 | 自贡硬质合金有限责任公司 | Hard alloy wear-resistant block and preparation method thereof |
| CN114480906A (en) * | 2022-02-09 | 2022-05-13 | 江苏硕展精密机械有限公司 | Tungsten carbide particle composite wear-resistant steel plate and manufacturing process thereof |
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| CN100535162C (en) | 2009-09-02 |
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