Manson of plating King Kong provides electricity improve research

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Summary: The hold inadequacy that report exists in plating diamond tool, grain falls off wait for a problem, affected the service life of the tool and efficiency badly. The article was summed up develop the improvement that rise domestic and internationally to eletroplate in recent years the method of diamond tool function, induce the following 3 kinds big: 1, improve performance of film carcass material, raise film to diamond prop up and combinative action;2, accumulate through raising the interface of diamond and carcass, eliminate the gap between diamond and film;3, right diamond grain finishing, make chemical bond union is formed between diamond and film. Detailed description had to all sorts of methods in article, undertook commendatory to the method that a few have potential, with period the improves a method to have a comprehensive system knowledge that aureate to report firm manson has the reader. Keyword: Eletroplate the graph in chemical bond   of; of area of contact of; of material of carcass of; of adhesion of grain of diamond tool; classifies date:   of foreword of   of A of code of TQ164 document label has tall hardness, high strenth, tall wearability and linear expansion coefficient as a result of diamond small wait for a series of exceedingly good physico-chemical character, be used to tool of the diamond that make is used at processing hard and fragile difficult treatment data. Eletroplate tool of law preparation diamond is the electrodeposit that carries a metal, inattentive diamond grain solid knot is in electric film, make diamond grain has cutting capacity. Use eletroplate production temperature of tool of law preparation diamond is low, avoided the hot loss to diamond, and manufacture technology handy, installation cost is little, production cycle is short, shape convenient and can repair. Accordingly, plating diamond product already had report file of all sorts of emery wheel, wheelhead, assorted, draw out gyro wheel of makings knife, nap, geological broach, reaming implement, circular cut of inside and outside piece, the special tool such as reamer, fretsaw, in mechanical, electron, building, drill, the industrial domain such as optical glass treatment gets applied extensively [1-3] . Current, using domestic and internationally eletroplate when tool of law preparation diamond, the main problem of existence is the adhesion between film carcass metal and diamond grain low, grain of the diamond in using gets when the action of force, become loose easily fall off, cause service life short. The main reason that produces these phenomena is to use eletroplate temperature is made when tool of law preparation diamond low, cause diamond grain surface to be soak of general metal place not easily, not only cannot get puissant chemical bond union, and often produce gap. Additional, suffer eletroplate the influence of craft, metal of diamond tool film is optional the type is finite (a few metals such as nickel of be confined to, chromium and its alloy) , the metallic type that place of tool of unlike hot pressing uses is extensive in that way. Be aimed at above problem, people used all sorts of measure to solve the adhesion of diamond and film metal. The article introduced those who rise integratedly to develop domestic and internationally in recent years improve report the method of function of plating diamond tool, undertook inducing classified to them, the hope can give a person one detailed and clear understanding. 1 improve carcass material   to eletroplate in diamond tool, film rises to prop up and combine function to diamond, the carcass that be called or matrix metal, it is deciding diamond grain whether action of sufficient play cutting, ask it satisfies the function requirement such as tall hardness, tall wearability and taller tenacity commonly, so people considers above all use the function method that improves carcass data to improve diamond tool. 1.

Although,the alloy of 1 carcass metal is changed single film (like nickel) have higher strength, especially tenacity, but general hardness is inferior, consequently people uses alloy film more. 1.

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1Film of Ni-Co binary alloy [the strength that cobalt of 1-5]   can increase nickel metal not only (the carcass compressive strength of alnico is 1600MPa) , and the heatproof performance that can improve carcass metal, in the NiCo n duality when 800 ℃ limit of strength of alloy carcass metal is 500MPa, return the tenacity that can raise carcass metal. Consequently film of NiCo binary alloy is become wide for adoption carcass data, however sometimes the hardness of film of NiCo binary alloy still is insufficient, machining hard and when the data with extremely strong abrasiveness, carcass is used up very fast. And NiCo film is achieved in cobaltic content only about 30% when, ability assures taller hardness and wearability, a large number of costly metal cobalt raised cost. 1.

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2Film of NiMn binary alloy [manganese of metal of 6]   can raise nickel carcass hardness, intensity and wearability more than cobalt. Hardness of nickel manganese carcass raises Rockwell than hardness of nickel cobaltic carcass (HRC)10 spends the left and right sides. Although the content of the manganese in alloy is very few, but very big to carcass function influence. Diamond bit of nickel manganese carcass is gotten into in layer of hard strong abrasiveness when, mean life and effectiveness for a given period of time compare broach of nickel cobaltic carcass to rise respectively 55% with 30% , in the meantime, broach of nickel manganese carcass does not need high rotate speed, great pressure, be helpful for those who reduce material using up, reduce drill cost. But brittleness of film of NiMn binary alloy is taller, easy craze, make work layer easily disintegrate. 1.

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3NiCoMn3 yuan alloy film [  of 7]   NiCoMn3 yuan alloy film has taller integrated and mechanical property. Hardness is taller than NiCo, brittleness compares NiMn again low, according with report the demand of plating diamond product to carcass. Use NiCoMn3 yuan the stone material tool that alloy film makes is more sharper than introducing product of film of NiCo binary alloy, more durable, particularly right horniness stone material, can show an advantage more. Because managing and much costly material is cobaltic, niCoMn3 yuan alloy film cost is low. NiCoMn3 yuan the mechanical function of alloy film can undertake adjustment inside big range, satisfy the requirement of more extensive circumstance. But in obtain NiCoMn3 yuan when alloy film, plating fluid part is complex, stability is controlled not easily. 1.

Of 2 carcass metal compound converting   compound film is to pass in all deposit method, plant or will count kind not even ground be mingled with goes to the solid grain of dissolve sex, fiber the special film that forms in metallic film. Wear as a result of the even dispersion inside compound film a large number of solid are atomic, these horniness are atomic, can produce very big block up effect to the slippage between grain, make the metal obtains effective aggrandizement. 1.

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1NiCo granule diamond is compound film [810]   joins right amount Namijin in plating fluid firm stone pink, the hardness of compound film raises acquisition NiCo diamond apparently, hardness can be amounted to 601.

53HV[8] , can attrition abrasiveness raise: significantly? Qu of  Xiong administer casts aside astounded? of  of stool of which Σ makings.

35 the left and right sides, life is on average when attrition radius is 14mm 0.

022km; contains accept rice diamond compound film coefficient of friction is powdery NiCodiamond 0.

3 the left and right sides, film life is when attrition radius is 14mm 0.

15km[9] . With NiCodiamond compound film makes diamond bit carcass, the diamond bit of preparation is gotten into in layer of hard, strong abrasiveness, wearability is good, broach footage is fast, life is long, and can prevent Kong Xie [10] . Because exceed fine diamond,powdery body reunites extremely easily, make its efficiency cannot be developed adequately, want to adopt measure to undertake dispersing to diamond pink so. Restricted those who exceed fine pink system to use value and applied foreground necessarily so. 1.

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2NiCo rare-earth element is compound film [11]   a few the improvement that the affiliation of rare earth compound can make plating fluid and film function get different rate, in electrodeposit process, basically be cation adsorption in metallic deposit apparently, and rare-earth metal ion shows stronger adsorptive sex on electrode, rare-earth metal is ionic easily on the active dot that adsorption grows in crystal, namely adsorption is on the growing point of brilliant face, restrain the growth of crystal effectively, add rare-earth element in plating fluid so hind, can get the film with fine grain. Pass pair of bright nickel film and the bright nickel film that add rare-earth element with M1420E of all-purpose cylindrical grinder the grinding experiment research of pottery and porcelain of diamond tool grinding, the affiliation that discovers rare-earth element raised the grinding of diamond tool to compare. Wearability of tool of diamond of bright nickel film is poor, carcass is used up fast, the tower above blade of unwarrantable diamond, diamond falls off the wearability of carcass of tool of bright nickel bond that fast; adds rare land rises, it is better that to diamond the bag is set, diamond gives blade height big, because the use efficiency of this tool gets,rise. 1.

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3Carbon of NiCo accept rice is in charge of compound film [rice of accept of carbon of 12-14]   is in charge of (CNTs) has sex of superhigh intensity He Ren, regard the buildup of advanced composite material as body, can improve the intensity of composite material and tenacity greatly. In addition, CNTs still has chemical stability the character with low factor of good, attrition, hopeful preparation has tall wear-resisting, decrease grind and anti-corrosive those who wait for function is new a kind of compound film [13] . Observe the SEM form appearance of compound film, matrix surface is being enclothed by a canal of shock carbolic accept rice, the one aspect of the matter that these carbolic accept rice manage is embedded deeply set in matrix, and another end is exposed at matrix outside, can protect action to arriving since matrix apparently [14] . This lab is devoting oneself to to use the research that manson of plating King Kong provides electricity of this compound film preparation. 1.

The nucleus of crystallization process be enslaved to be enslaved to that the grain of 3 carcass metal refines   film forms rate and grain to grow rate. Nucleus forms rate faster, grain grows rate is slower, crystallize thereby finer, film is more compact, hardness and tenacity are better also. According to electrochemistry theory, cathode electrochemistry polarization crosses potential bigger, form nucleus more easily, crystallize thereby finer, film is more compact. Consequently people is used raise electrochemistry polarization to cross potential, refine grain, achieve the goal that improves carcass data. 1.

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1 refine additive [after additive of 1-3]   joins electrolyte, because it is in electrode is apparently adsorptive, increased electrochemistry polarization, the grain that is enclothed stops to grow, produce new nucleus; new grain to be enclothed again before long, produce new n/med tuberculosis center again, can obtain meticulous crystallization then. Next, additive is in crystal is apparently adsorptive the surface that can reduce crystal can, can reduce consequently form microcrystallinely, this is helpful for forming new nucleus. Refining additive basically is sulphur acid kind, inferior sulphur is acerbity kind, sulphonic acid amide kind, 2 sulphur are acerbity kind wait, for example: ? Is Qiang  ⒍ made an appointment with makeup hand in chief of a tribe does ⒈ of curtain of prize of antrum of cellar of 0 two ⒈ hand in frequency of Gu of prize of  of refine of prize curtain ⑤ to take? Tip source is aurelian blame the grain grain before aurelian burn of press and smooth of serve of Liu of bridle of  of Kun of imperial order cangue holds Huo high to cast aside huang3hu1 rice huller to refined male midge predicts ⑾ ? to add additive is bigger, and grain crystallization is spent poorer, grain is inattentive, after adding additive, grain grain is apparent decrescent, and crystallization is compact. 1.

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2 ultrasonic laws [15-16]   uses ultrasonic to be able to make material is made force mechanical vibration intensely, return the effect that can produce one-way power. When the ultrasonic of certain frequency passes a liquid, the small bleb with proper measure produces resonance. In the few and far between phase of ultrasonic, small bubble expands quickly greaten; is in dense phase, small bubble is compressed suddenly again, till break down. When small bubble is compressed suddenly, the liquid comes to fill cavity with great rate all round, the liquid around or solid can be gotten on the high pressure of 1000 atmosphere, this is cavitation phenomenon or cavitation action [15] . In ultrasonic condition falls, use high current density to undertake eletroplating, eletroplate to be compared with convention, can make film relatively meticulous close together, level off smooth, ply is even, without as hole, good as matrix union, and have higher intensity and hardness. Nickel eletroplates in the ultrasonic field that is 16kHz in frequency, hardness can raise 3O ~ 5O[15] . Below proper craft condition, also can make the internal stress of film under the film that eletroplates without ultrasonic. Its reason depends on, arrive high when cathode current density when fair value, cathode polarization increases quickly, bring about analyse hydrogen aggravate, PH cost rises, cathode occurrence oxyhydrogen changes nickel solution, and the cavitation phenomenon of ultrasonic is opposite this kind to the move since sol is refined and make in order to reach stabilization dispersedly again, prevent to sol is condensed and precipitate. Ultrasonic is unfavorable use at the arenaceous whole process on diamond [16] , use Yu Jiahou only period, it is certain to grind bead embedded film when diamond when ply, use ultrasonic, bead of King Kong stone mill won't be fallen by shake, go up with respect to what won't affect diamond tool arenaceous amount. 1.

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3 pulse eletroplate with material of accept rice carcass [pulse of 17-18]   eletroplates is 20 centuries 60 time develop a kind when rise to eletroplate new-styly technology. Is the electrochemistry principle of its basis: ? ? of flatter of Zhi of Lu of Ju of show off post growing permanent teeth is connected when electric conductance when, electrochemistry polarization increases, metallic ion is sufficient near cathode area by deposit, crystal and meticulous shining; becomes film when electric current closes, electric ion is put to reply again to initiative chroma near cathode area, thick poor polarization is eliminated. Accordingly, pulse eletroplates is to use a kind of new-style means that use phone. Use the Zhang Chi of electric current or voltage pulse, reduce the thick poor polarization of cathode, allow higher current density to get taller electrode polarization thereby, achieve the effect that refines grain finally. At present electrodeposit technology has made instrument of a kind of of accept rice material important preparation, these material have very tall hardness and better tenacity [17] , be used to when preparation diamond tool, the wearability that can make King Kong manson is provided rises significantly. Li Zhaomei [the person such as 18] used pulse electrodeposit legal system to have manson of King Kong of accept rice nickel is provided, undertake wearing away to its ruinous experiment, the mean life that makes clear tool of diamond of nickel of pulse accept rice as a result is apparent tool of cobaltic diamond of nickel of prep above convention, it is about 1.

5 times. The 2 interface that raise diamond and carcass accumulate     2.

1 use the face thick the diamond grain   that has changed is used thick change a law to let diamond surface form a few tiny indentation and cranny, raise diamond and the appearance that carcass contacts, set force in order to raise diamond and metallic machine, increase " mechanical anchor chain " effect. A kind strong thick is changing a method: ? Sleep like that  ? is given priority to with NaCl+BaCl2) reach a few deoxidizer to enclothe it is above diamond, build with crucible of pottery and porcelain, heat in furnace to 1000 ℃ ~ thermal insulation has after 1100 ℃ , use boiling water purify next chloric base salt. Undertake heating to diamond, let chloric base saline melt corrodes generation graphitization to diamond, make the surface forms tiny and coarse indentation and cranny. Do another kind lose thick is changing a method: ? Gua of  of account of egret of chloric intermediary of  of thorn of You Rong of Gong of banter chair salary  ? nitric acid + vitriolic or nitric acid + hydrogen peroxide solution) in erode, ceaseless agitate, clean clean with distilled water next. Does diamond corrode next surfaces acerbitily to you can form a few blemish in strong oxidation (like: ? Imprint ⒘ salt? and slight graphitization. 2.

The clearance   between grain of the 2 diamond in eliminating a tool and carcass is belonged to as a result of diamond metalloid, do not have very good affinity with the metal, cause there is very tall interface between diamond and general metal or alloy can, often produce gap, reduced the adhesion between diamond grain and film matrix. Be aimed at this kind of circumstance, can use grain surface modified to law, CVD law, ultrasonic law, chemical plating law will avoid or make up for this kind of space. 2.

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Law of modified of 1 grain surface [19]   undertakes oxidizing handling to diamond grain, the chemistry that makes its surface forms close water base round, raise the hydrophily of diamond surface thereby, make diamond grain and film are united in wedlock cheek by jowl. If adopt chemical measure, make these kiss diamond surface water radical is round by a few hydrophily taller organic gene is replaced, can improve the result further. 2.

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Law of 2 chemical plating [chemical plating of 20]   is to be below the condition that does not have impressed current, through the oxidation from catalytic process? Reductive reaction is in metal of diamond surface deposit, form the filmy film with even, compact ply thereby. Experimental discovery, when using technology of chemical and compound plating to get diamond tool, between diamond and metallic carcass nonexistent clearance. Again complementary it is with ultrasonic vibration all round diamond grain can appear expand, comb-out clearance. Atomic diamond can undertake chemical plating law gets a tool directly, it can be in plating fluid even in suspension. To big grain diamond we suggest to be able to undertake eletroplating first establish is arenaceous, let diamond originally beforehand embed in film, add thick process to be able to use chemical plating. The 3 processing that raise the chemical bond union between grain and carcass to pass pair of diamond, make the carbolic atom of its surface and metallic atom form a metal / carbolic chemical bond, can solve the problem with the diamond in diamond tool and carcass not firm adhesion thoroughly. 3.

1 surface metallization [21]   uses chemical plating law to undertake finishing to diamond grain, can make diamond and film form firm close connection. But if make diamond face whole metallization, diamond grain surface has good conductivity, do not apply to eletroplate tool of law preparation diamond. In burying arenaceous process, the diamond of plating Fu and steel matrix and film make negative electrode jointly, can appear mutual felt forms numerous diamond grain together agglomerate phenomenon. The diamond that consequently researcher uses the surface to have dispersive and electric particle makes report plating diamond tool [21] . The method is the rate that controls diamond become apparent to learn plating, the chroma that controls sensitize fluid and activating solution strictly and sensitize and the time that activation handles, make diamond apparently the amount of metallic particle maintains inside likely range. Although diamond is apparently electric qualitative check the number estimates increase, can increase to be nodded with the join between film metal, improve the combinative performance of film and diamond. But when the metal when particle is too concentrated, can form join to become piece metallic layer. After diamond changes processing learning plating, diamond and nickel the clear boundary line between cobalt radical film disappeared, on the combinative scale that the nickel cobalt that a few disperse joins the dot grows in diamond and film [21] . Manson of plating King Kong provides the diamond preparation electricity that handles with classics activation, when grinding processes work of Al2O3 pottery and porcelain, material purify quantity is 1 what handle without activation.

5 times [21] . But use this kind of method, the likelihood between diamond grain and film is the chemical union on original meaning only, did not achieve genuine chemistry to combine key, the active force between the element may hold larger proportion. 3.

2CVD law [the diamond tool with the CVD deposit good to preparation technology that 22]   uses diamond undertakes repair is handled, can make not only new formation diamond is deposit in the clearance in the tool, the diamond grain that can make a tool medium again gets second birth chance, further growth perfects the surface, improve grain performance thereby. The interstitial rehabilitate that appears between the diamond grain that MPCVD law is used successfully after eletroplate and carcass metal. The exterior form appearance that manson of plating King Kong provides the electricity that is preparation of grain of diamond of 16 μ M with average size in the observation below SEM, can discover edges and corners and surface are irregular blemish, there are concave side and space between diamond grain and carcass metal. Put this tool into the deposit in MPCVD system, average size growth is diamond grain 25 μ M, through SEM the clearance between observation diamond grain and carcass metal gets make up for and diamond grain surface appears a regulation and full [22] . Use this kind of method to eletroplating diamond tool has repair, have taller cutting force, wearability and grain adhesion than building tool of diamond of plating of telegram in reply. Below the high temperature in MPCVD process, the meeting between diamond and carcass forms carbon - metallic chemical bond, make puissant tie produces between diamond grain and carcass metal [22] . CNC Milling