CN103861686A - Grinding roller with bionic and wear-resistant composite coating and preparation technology of grinding roller - Google Patents
Grinding roller with bionic and wear-resistant composite coating and preparation technology of grinding roller Download PDFInfo
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- CN103861686A CN103861686A CN201410101145.0A CN201410101145A CN103861686A CN 103861686 A CN103861686 A CN 103861686A CN 201410101145 A CN201410101145 A CN 201410101145A CN 103861686 A CN103861686 A CN 103861686A
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Abstract
The invention relates to a grinding roller with a bionic and wear-resistant composite coating and a preparation technology of the grinding roller. The bionic and wear-resistant composite coating is formed by compositing a bionic and wear-resistant composite coating and a core material with the tenacity, and the bionic and wear-resistant composite coating consists of a bionic strengthened layer, a wear-resistant layer and a transition layer. The bionic strengthened layer is formed by overlaying niobium high-chromium iron wear-resistant solder wires containing 20-27% of Cr, 3.5-5.5% of C, 5-7% of Nb, 0.3-1.0% of Si, 0.5-1.3% of Mn, 0.3-0.9% of B, 0.12-0.3% of Ti, 0.05-0.20% of Ce, 0.02-0.10% of La and the balance being Fe; the transition layer of the bionic grinding roller is formed by overlaying a high-chromium austenite solder material containing 14-17% of Cr, 9-15% of Mn, 0.7-1.5% of C, 1-2.3% of Si, 2-5% of Ni, 0.014% of P and the balance being Fe. Compared with that of a rolling roller, with a smooth surface made of the same base material, the service life of the grinding roller is prolonged by 2-4 times.
Description
Technical field
The present invention relates to the grinding roller that grinding is used, particularly a kind of grinding roller and preparation technology thereof with Bionic wear-resisting composite coating.
Background technology
Grinding equipment be during the industry mineral mucks such as metallurgy, mine, cement, electric power, chemical industry, coal, building materials, pottery and refractory material and ore grinding are processed one of widely used important Large-Scale Equipment, and grinding roller and compression roller be milling equipment critical component and main wearing and tearing attrition component, China's Year's consumption reaches more than 120 ten thousand tons.Therefore, seek to improve grinding roller material, improve the life-span, reduce energy consumption and roller consumption and become the common target of pursuing of many field technology workers, be subject to the attention of countries in the world.
At present, generally adopt at home the solder wire material of high rigidity, high-wearing feature, high-impact to carry out built-up welding processing to roller surface, can pile and weld that fertile material is difficult to obtain, the even superficial layer of excellent performance or the surperficial garland of different pattern that cannot obtain, significantly improve the wearability of grinding roller.After roller surface wearing and tearing, can carry out 10 above processing of built-up welding again, reduce cost and improved again production efficiency, but process and brought a difficult problem for the reparation again of roller.The material with superpower, high tenacity and high-wearing feature is difficult to processing, and it is large to repair processing capacity, and workman's labour intensity is large, operating environment is poor, and it is not high to repair working (machining) efficiency yet.After processing, workpiece also often has the problems such as folder carbon, carburizing, deviation from circular from are large, therefore, finds wearability and fatigue life that a kind of more effective method improves roller, is to be badly in need of the technical barrier that solves, has important practical significance.
At home and abroad, except seeking New Kind of Anti-Abrasion grinding abrasion material and from structure reasonably designs, surface sclerosis (surface modification) is the important method that improves mechanical part quality, increases the service life, improves serviceability.At present, conventional surperficial hardening technique has chemistry, laser, electron beam heat treatment, built-up welding, spraying, deposition, coating etc.Because thin hardened layer is thinner, reduce the validity that ground machine parts use under the operating mode of abrasive wear.And the raising of engineering material case hardness is also limited.Therefore, the present invention proposes a kind of cement grinding roller and preparation technology with Bionic wear-resisting composite coating.
The multiple biology of occurring in nature is survived in the environment that has wearing and tearing to occur, and its body surface and internal microstructure have inherent tolerance to the wearing and tearing of the hard things such as the grains of sand.Along with deepening continuously of bionics Study, researcher finds, organism adapts to the various functions that external environment condition presents, the effect of single factors or the simple addition of multiple factor effects, but by multiplely depending on each other for existence, interrelated factor is by certain Mechanism coupling, synergistic result.For example, the functions such as drag reduction that organism presents, wear-resisting, antifatigue, be achieved by the multifactorial coupling of organism, be different shape, structure, material formation of organism etc., reach biological function optimization, environmental adaptation optimization and energy are consumed to minimumization by coupling each other.
Research is found, organism surface ubiquity geometric non-smooth feature, and the construction unit of certain geometrical shape is distributed in some position of its body surface randomly or regularly, and the shape of its construction unit has scale shape, convex hull-shaped, dimple-shaped, bristle shape and corrugated etc.Therefore, be subject to the inspiration of organism structure and function, the biological coupling phenomenon of the factors such as wear-resisting form based on canonical biometric body surface, structure, material, by the principle of similarity of Bionic coupling design, the geometric parameters such as shape to bionic coupling cell cube, size, the regularity of distribution, quantity are optimized design, utilize solder technology to process at roller surface, prepare Bionic wear-resisting composite coating, improve anti-wear performance and the grinding effect of roller surface, effectively improve the service life of grinding roller, invent the grinding roller that a kind of grinding is used.
Summary of the invention
The object of the invention is to solve the problems referred to above that existing grinding roller exists, a kind of grinding roller and preparation technology thereof with Bionic wear-resisting composite coating is provided, make it have good anti-wear performance, obtain higher service life and grinding comprehensive effectiveness.
The grinding roller that the present invention has a Bionic wear-resisting composite coating is to be composited by wearing layer, the transition zone of bionic coupling strengthening layer, strengthening layer bottom and the core material with better toughness, be equipped with suitable Bionic Design and preparation means, obtain the bionic coupling configuration of surface with millimetre-sized convex closure, striped, ripple, grid or scale at roller surface, and the multilayer material of embedded surface structure and heterogeneity.
Concrete technical scheme of the present invention is:
Have grinding roller and the preparation technology thereof of Bionic wear-resisting composite coating, be composited by Bionic wear-resisting composite coating and the core material with toughness, Bionic wear-resisting composite coating is made up of bionic reinforced layer, the wearing layer of strengthening layer bottom, transition zone.
Described bionic reinforced layer is to have the non-smooth morphology of millimetre-sized convex closure, striped, ripple, grid or flakey and the synergistic bionic coupling of damascene structures surface, formed by the niobium rich chromium cast iron abrasion-resistant welding wire built-up welding that contains containing following composition (wt%), component of weld wire scope is as follows: 20～27% Cr, 3.5～5.5% C, 5%～7%Nb, 0.3～1.0%Si, 0.5～1.3%Mn, 0.3～0.9%B, 0.12～0.3%Ti, 0.05～0.20Ce, 0.02～0.10La, surplus is Fe; Wearing layer composition is consistent with strengthening layer, is made up of welding material built-up welding; Bionical grinding roller transition zone is to be formed by the high-chromium austenite welding material built-up welding of following composition (wt%), and material composition scope is as follows: 14～17Cr%, and 9～15%Mn, 0.7～1.5% C, 1～2.3%Si, 2～5Ni%, 0.014%P, surplus is Fe.
Described grinding roller Bionic wear-resisting coating surface form is the pit shape of 3～30 millimeters or convex closure shape, striated, corrugated, latticed non-smooth morphology or is combined by more than 2 kinds or two kinds different non-smooth morphology wherein.
Described a kind of grinding roller and preparation technology thereof with Bionic wear-resisting composite coating is the wearing layer by described bionic reinforced layer, strengthening layer bottom and transition zone is prepared according to the following steps and be composited with the core material with toughness:
Adopt bead-welding technology, the grinding roller core material with toughness is preheating between 330 DEG C～420 DEG C, at the 14～17Cr% that contains of 8～30 millimeters of its surface overlaying one decks, 9～15%Mn, 0.7～1.5% C, 1～2.3%Si, 2～5Ni%, 0.014%P, surplus is the high-chromium austenite buffer layer material of Fe, then in the above again 5～25 millimeters of built-up welding one decks contain 20～27% Cr, 3.5～5.5% C, 5%～7%Nb, 0.3～1.0%Si, 0.5～1.3%Mn, 0.3～0.9%B, 0.12～0.3%Ti, 0.05～0.20Ce, 0.02～0.10La, surplus be Fe containing niobium rich chromium cast iron non-smooth surface, after built-up welding by it at 500～620 DEG C, temperature retention time is annealing in 1～2 hour, furnace cooling is come out of the stove during to room temperature.
Described grinding roller Bionic wear-resisting coating surface form is the pit shape of 3～30 millimeters or convex closure shape, striated, corrugated, latticed non-smooth morphology or combined by more than 2 kinds or two kinds different non-smooth morphology wherein, and described Bionic wear-resisting composite coating can be prepared from by the method for built-up welding or machining.
The invention has the beneficial effects as follows: utilize bionic coupling technology to process roller surface, form the bionic coupling configuration of surface pattern with different shape, size and the regularity of distribution, the wearability of grinding roller and grinding effect are greatly improved.Smooth surface grinding roller comparison with same matrix material, improves 2～4 times service life.Can be for specific requirement, select the bionic coupling configuration of surface pattern of different shape, size and the regularity of distribution, thereby obtain different performances.It is simple that the present invention also has manufacturing process, dependable performance, and cost is low, cost performance ratio.The grinding roller with Bionic wear-resisting composite coating can be widely used in the cement industry of China, promotes the development of China's basic industries and the export trade, promotes the growth of national economy.
Detailed description of the invention
Further illustrate particular content of the present invention and embodiment thereof below in conjunction with embodiment.
Embodiment 1
Have grinding roller and the preparation technology thereof of Bionic wear-resisting composite coating, be composited by Bionic wear-resisting composite coating and the core material with toughness, Bionic wear-resisting composite coating is made up of bionic reinforced layer, the wearing layer of strengthening layer bottom, transition zone.
Described bionic reinforced layer is the bionic coupling surface with millimetre-sized convex closure, striped, ripple, the non-smooth morphology of grid, formed by the niobium rich chromium cast iron abrasion-resistant welding wire built-up welding that contains containing following composition (wt%), component of weld wire scope is as follows: 25% Cr, 3.8% C, 5.6%Nb, 0.7%Si, 0.9%Mn, 0.5%B, 0.18%Ti, 0.05Ce, 0.05La, surplus is Fe; Wearing layer composition is consistent with strengthening layer, is made up of welding material built-up welding; Bionical grinding roller transition zone is to be formed by the high-chromium austenite welding material built-up welding of following composition (wt%), and material composition scope is as follows: 15% Cr, and 12% Mn, 1.0% C, 1.3%Si, 3.8Ni%, 0.014%P, surplus is Fe.
The convex closure on described grinding roller top layer is regular point configuration and distributes, and convex closure diameter is 5～10 millimeters, is highly 2.5～5 millimeters, and between convex closure, centre-to-centre spacing is 7.5～15 millimeters.
The striped on described grinding roller top layer, its width of fringe is 5～15 millimeters, and striped height is 5～10 millimeters, and between striped, centre-to-centre spacing is 7.5～30 millimeters, the parallel distribution of striped, the angle of fringe distribution direction and grinding roller axis is 0 °～180 °.
The ripple on described grinding roller top layer, its waviness width is 5～15 millimeters, and the difference in height of crest and trough is 3～20 millimeters, and ripple spacing is 7.5～30 millimeters, ripple exceeds 5～10 millimeters of grinding roller matrixes, and the angle of ripple distribution arrangement and grinding roller axis is 0 °～180 °.
The grid on described grinding roller top layer, striped by the parallel distribution of both direction intersects to form mutually, its two crisscross width of fringe is 5～15 millimeters, striped height is 5～10 millimeters, between the striped of equidirectional parallel distribution, centre-to-centre spacing is 7.5～30 millimeters, and the angle of both direction is 10 °～90 °.
The scale on described grinding roller top layer, its major axis is 10～30 millimeters, and minor axis is 5～15 millimeters, and scale spacing is 10～25 millimeters, and scale height is 4～8 millimeters.
Described a kind of grinding roller and preparation technology thereof with Bionic wear-resisting composite coating is the wearing layer by described bionic reinforced layer, strengthening layer bottom and transition zone is prepared according to the following steps and be composited with the core material with toughness:
First, core material is carried out to removing surface, inner flaw detection and preheating, and preheat temperature is controlled between 350 DEG C～400 DEG C, adopts low nickle content and high manganses and chromium content austenite welding material to carry out welding wire electric arc built-up welding on parent surface, prepare transition zone, thickness is 10～25 millimeters;
Then, utilize angle grinding machine by transition overlay cladding surface rubbing, then change resurfacing welding material, adopt rich chromium cast iron abrasion-resistant welding wire to carry out built-up welding on transition zone surface again, prepare wearing layer, thickness is 5～15 millimeters;
Finally, adopt the material identical with preparing wearing layer, further carry out built-up welding processing on the wearing layer surface of grinding roller, prepare the synergistic bionic coupling strengthening layer of the non-smooth morphology of convex closure, striped, ripple, grid or flakey and damascene structures.The residual stress causing for reducing heap postwelding, avoids cracking, and postwelding is first incubated, then shove charge is heat-treated.Holding temperature is 180～230 DEG C, and temperature retention time is 0.5～1.0h, and annealing temperature is 500～600 DEG C, the air cooling of coming out of the stove when the furnace cooling to 80～100 DEG C.
Embodiment 2
Have grinding roller and the preparation technology thereof of Bionic wear-resisting composite coating, be composited by Bionic wear-resisting composite coating and the core material with toughness, Bionic wear-resisting composite coating is made up of bionic reinforced layer, the wearing layer of strengthening layer bottom, transition zone.
Described bionic reinforced layer is to have the non-smooth morphology of millimetre-sized convex closure, striped, ripple, grid or flakey and the synergistic bionic coupling of damascene structures surface, formed by the rich chromium cast iron abrasion-resistant welding wire built-up welding containing following composition (wt%), component of weld wire scope is as follows: 27% Cr, 4.8% C, 6.5%Nb, 0.8%Si, 1.1%Mn, 0.7%B, 0.20%Ti, 0.15Ce, 0.10La, surplus is Fe; Wearing layer composition is consistent with strengthening layer, is made up of welding material built-up welding; Bionical grinding roller transition zone is to be formed by the high-chromium austenite welding material built-up welding of following composition (wt%), and material composition scope is as follows: 17% Cr, and 10% Mn, 1.2% C, 1.1%Si, 4.5Ni%, 0.014%P, surplus is Fe.
The parameter of described grinding roller is identical with embodiment 1.
Wearing layer and the transition zone preparation method of described bionic reinforced layer, strengthening layer bottom are identical with embodiment 1.
Claims (5)
1. one kind has grinding roller and the preparation technology of Bionic wear-resisting composite coating, it is characterized in that being composited by Bionic wear-resisting composite coating and the core material with toughness, Bionic wear-resisting composite coating is made up of bionic reinforced layer, the wearing layer of strengthening layer bottom, transition zone.
2. a kind of grinding roller and preparation technology with Bionic wear-resisting composite coating according to claim 1, it is characterized in that described bionic reinforced layer is formed by the niobium rich chromium cast iron abrasion-resistant welding wire built-up welding that contains containing following composition (wt%), component of weld wire scope is as follows: 20～27% Cr, 3.5～5.5% C, 5%～7%Nb, 0.3～1.0%Si, 0.5～1.3%Mn, 0.3～0.9%B, 0.12～0.3%Ti, 0.05～0.20Ce, 0.02～0.10La, surplus is Fe.
3. a kind of grinding roller and preparation technology with Bionic wear-resisting composite coating according to claim 1, it is characterized in that transition zone is to be formed by the high-chromium austenite welding material built-up welding of following composition (wt%), material composition scope is as follows: 14～17Cr%, 9～15%Mn, 0.7～1.5% C, 1～2.3%Si, 2～5Ni%, 0.014%P, surplus is Fe.
4. according to a kind of grinding roller and the preparation technology with Bionic wear-resisting composite coating described in claim 1, it is characterized in that, a kind of grinding roller step of preparation process with Bionic wear-resisting composite coating is: adopt bead-welding technology, the grinding roller core material with toughness is preheating between 330 DEG C～420 DEG C, at the 14～17Cr% that contains of 8～30 millimeters of its surface overlaying one decks, 9～15%Mn, 0.7～1.5% C, 1～2.3%Si, 2～5Ni%, 0.014%P, surplus is the high-chromium austenite buffer layer material of Fe, then in the above again 5～25 millimeters of built-up welding one decks contain 20～27% Cr, 3.5～5.5% C, 5%～7%Nb, 0.3～1.0%Si, 0.5～1.3%Mn, 0.3～0.9%B, 0.12～0.3%Ti, 0.05～0.20Ce, 0.02～0.10La, surplus be Fe containing niobium rich chromium cast iron non-smooth surface, after built-up welding by it at 500～620 DEG C, temperature retention time is annealing in 1～2 hour, furnace cooling is come out of the stove during to room temperature.
5. a kind of grinding roller and preparation technology with Bionic wear-resisting composite coating according to claim 1, it is characterized in that grinding roller Bionic wear-resisting coating surface form is the pit shape of 3～30 millimeters or convex closure shape, striated, corrugated, latticed non-smooth morphology or is combined by more than 2 kinds or two kinds different non-smooth morphology wherein, described Bionic wear-resisting composite coating can be prepared from by the method for built-up welding or machining.
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| CN104084258A (en) * | 2014-07-12 | 2014-10-08 | 吉林大学 | Wear-resisting anti-fatigue squeeze roller with multi-material coupling structure |
| CN104858013A (en) * | 2015-05-29 | 2015-08-26 | 四川鸿舰重型机械制造有限责任公司 | Composite roll skin of four-roll crusher and preparation process for composite roll skin |
| CN106244903A (en) * | 2016-07-26 | 2016-12-21 | 镇江富华轧辊有限公司 | A kind of multi-scale coupling grinding roller and preparation method thereof |
| CN106238709A (en) * | 2016-07-26 | 2016-12-21 | 镇江富华轧辊有限公司 | The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof |
| CN110039253A (en) * | 2019-04-18 | 2019-07-23 | 大唐东北电力试验研究院有限公司 | A kind of middling speed roller surface restorative procedure preventing penetrating crack |
| CN112547224A (en) * | 2020-11-27 | 2021-03-26 | 湖北秦鸿新材料股份有限公司 | Wear-resistant grinding roller |
| CN115805354A (en) * | 2022-11-25 | 2023-03-17 | 中国地质大学（武汉） | Surfacing lining plate with bionic structure and preparation method thereof |
| CN117599907A (en) * | 2024-01-09 | 2024-02-27 | 安徽帕尔斯德金属防磨有限公司 | Composite millstone lining plate of HP series coal mill and manufacturing method |
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| CN117599907A (en) * | 2024-01-09 | 2024-02-27 | 安徽帕尔斯德金属防磨有限公司 | Composite millstone lining plate of HP series coal mill and manufacturing method |
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Application publication date: 20140618 |