CN101596745A - Vitrified bond for diamond grinding wheel and method for preparing diamond grinding wheel - Google Patents

Vitrified bond for diamond grinding wheel and method for preparing diamond grinding wheel Download PDF

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CN101596745A
CN101596745A CN 200910304381 CN200910304381A CN101596745A CN 101596745 A CN101596745 A CN 101596745A CN 200910304381 CN200910304381 CN 200910304381 CN 200910304381 A CN200910304381 A CN 200910304381A CN 101596745 A CN101596745 A CN 101596745A
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sol
diamond
solution
mixed
grinding wheel
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CN 200910304381
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CN101596745B (en )
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隆 万
刘小磐
张国威
张洪磊
洋 汪
胡伟达
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湖南大学
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Abstract

The invention discloses a vitrified bond for a diamond grinding wheel and a method for preparing the diamond grinding wheel. The method comprises the steps of: mixing industrial grade SiO2 sol with solutions such as NaNO3, KNO3, LiNO3 and H3BO3 evenly by mechanical stirring first; adjusting the pH value of mixed solution to between 4 and 6; adding industrial grade Al2O3 sol into the mixed solution; drying obtained mixed sol at a temperature of between 500 and 550 DEG C; and sieving the dried mixed sol through a sieve with meshes of between 100 and 120 after the grinding and crushing; and obtaining the vitrified bond for the diamond grinding wheel. The diamond grinding wheel is prepared based on the preparation of the vitrified bond. The vitrified bond has evenly mixed material components, the grain diameter of the vitrified bond can reach nanometer range, and the rupture strength is between 101.8 and 105.3MPa after the sintering molding; and the vitrified bond has intact coating on a diamond abrasive after the sintering, the porosity is between 20 and 28 percent, and the use speed can reach between 80 and 100m/s.

Description

金刚石砂轮陶瓷结合剂及金刚石砂轮的制备方法 Ceramic bond diamond wheel Diamond grinding wheel preparing agent

技术领域 FIELD

本发明属于材料工程领域,涉及一种金刚石砂轮陶瓷结合剂及金刚石砂轮的制备方法, 用于可以制备低熔点、高强度、超微粒度陶瓷结合剂及砂轮。 The present invention belongs to the field of materials engineering, method for making a vitrified bonded diamond wheel Diamond Wheel agent, can be prepared for the low melting point, high strength, ceramic binder and ultrafine size wheel.

背景技术 Background technique

目前超硬磨具砂轮用陶瓷结合剂的制备方法主要有两种: 一种是将天然的硅酸盐材料粉碎后按照一定比例混合获得,如:粘土-长石-滑石、粘土-长石-石英等体系;另一种是按照结合剂配方将各种化学物质在高温下熔炼成玻璃或陶瓷,然后再将熔炼物机械破碎获得结合剂粉末。 Currently, there are two primary superhard abrasive wheel by a ceramic binding agent prepared: one is the natural material is pulverized silicate obtained by mixing a certain percentage, such as: clay - feldspar - talc, clay - feldspar - quartz and other systems; other formulations in accordance with the binding agent various chemical substances melting at a high temperature into a glass or ceramic, mechanical disruption was then melted binding agent to obtain a powder. 从工艺条件分析,陶瓷结合剂的粒度主要由机械破碎所决定,所得陶瓷结合剂最小化粒度只能在微米级(1. 0微米-50. 0微米)范围。 Analysis of the process conditions, the particle size of the ceramic binder mainly determined by mechanical crushing, the resultant ceramic binder can be minimized size in the micron range (1.0 microns to 50 0 microns). 随着科技的发展,工业上对工件表面精度要求越来越高,在某些领域使用陶瓷结合剂磨具加工时,不但要求磨料的粒度达到微米级(O. 1 微米)以内,更要求结合剂的粒度达到纳米级(0. lnm-100nm)范围,否则在磨削过程中,结合剂会将工件表面划伤。 With the development of technology, the accuracy of the workpiece surface industry increasingly high, the processing of vitrified bond used in some areas, only requires to achieve micron grit abrasive (O. 1 micron) or less, more binding requirements nanometer size agent (0. lnm-100nm) range, or in the grinding process, the binding agent will scratch the workpiece surface. 因此采用传统的陶瓷结合剂方法很难制备出高加工精度砂轮所需的陶瓷结合剂。 Thus using the traditional method is difficult to produce a ceramic binding agent required for a high precision vitrified bond grindstone.

发明内容: SUMMARY:

本发明要解决的技术问题是,提供一种金刚石砂轮陶瓷结合剂及金刚石砂轮的制备方法本发明的技术解决方案如下: The present invention is to solve the technical problem, the technical solution to provide a method for preparing a ceramic binding agent diamond wheel Diamond grinding wheel of the present invention is as follows:

一种金刚石砂轮陶瓷结合剂的制备方法,其特征在于,包括以下步骤: 先将工业级Si02溶胶(Si02固相百分含量30.45。/。,粒径12. 39nm)和分析纯级NaN03,KN03,LiN03,H3B03等溶液按照Si02:NaN03:KN03:LiN03:H3B03质量比为(40〜50):( 18〜21.93) : (12.22〜15.04) : (40〜46) : (30〜35.52)的比例机械搅拌混合,其中NaN03, KN03, LiN03, 113803溶液浓度范围为10%-60%;调整混合溶胶PH为4〜6时,按照Si02: Al203质量比为(40〜50) : (10〜15)的比例加入工业级Al203溶胶;将所得的混合的溶胶在 A process for producing ceramic bond diamond grinding wheel, characterized in that it comprises the steps of: first industrial Si02 sol (. 30.45./ percentage of solid Si02, diameter 12. 39nm) and analytical grade NaN03, KN03 , LiN03, H3B03 solution such as in accordance with Si02: NaN03: KN03: LiN03: ratio of (40~50) :( 18~21.93) H3B03 mass: (12.22~15.04): (40~46): (30~35.52) ratio mechanical stirring and mixing, wherein NaN03, KN03, LiN03, 113803 solution concentration in the range of 10% -60%; mixed sol to adjust PH is 4 ~ 6, in accordance with Si02: Al203 ratio of mass of (40~50): (10 ~ 15) the proportion of industrial grade Al203 sol was added; mixing the sol obtained in

500TT55(TC烘干、研磨破碎后过10(Tl20目筛网,即制得金刚石砂轮陶瓷结合剂。 作为优选,H3B03溶液浓度为10。/。, NaN03, KN03, LiN03溶液的浓度为50。/0。 一种金刚石砂轮的制备方法,其特征在于,包括以下步骤:先将工业级Si02溶胶(Si02固相百分含量30. 45%,粒径12. 39nm)和分析纯级NaNO;5, KN03, LiN03, H;jB03溶液按照Si02:NaN03:KN03:LiN03:H3B03质量比为(40〜50) : (18〜21.93) : (12. 22〜15. 04):( 40〜46) : (30〜35. 52)比例比例机械搅拌混合,其中NaNO;j, KN03, LiN03, H3B03溶液浓度范围为10%-60%;调整混合溶胶PH为4〜6时,按照Si。2: Al203质量比为(40〜50) : (10〜15)的比例加入工业级Al203溶胶(Al203百分含量28. 12%,粒径10nm-20nm);当混合溶胶粘度达到20mpa. s-40mpa. s范围内,在机械搅拌条件下加入金刚石磨料,金刚石磨料与结合剂干料比例范围为1〜2;金刚石磨料的质量要占最后砂轮总质量 500TT55 (TC drying, grinding broken through 10 (Tl20 mesh screen, i.e., to obtain vitrified bond diamond wheel. Preferably, the concentration of the solution of H3B03 10./., The concentration of NaN03, KN03, LiN03 solution was 50./ 0. a method of preparing a diamond grinding wheel, characterized by comprising the steps of: first industrial Si02 sol (Si02 solid percentage 30.45%, particle diameter 12. 39nm) and analytically pure NaNO; 5, KN03, LiN03, H; jB03 solution according Si02: NaN03: KN03: LiN03: H3B03 mass ratio of (40~50): (18~21.93): (12. 04 22~15) :( 40~46): ( . 30~35 52) proportion mechanically stirred and mixed, wherein NaNO; j, KN03, LiN03, H3B03 solution concentration in the range of 10% -60%; mixed sol is adjusted to PH 4 ~ 6, according Si.2: Al203 ratio of mass It is (40~50): ratio (10 ~ 15) is added to technical grade Al203 sol (Al203 percentage of 28.12%, particle size of 10nm-20nm); when s within the range of s-40mpa mixed sol viscosity reaches 20mpa.. , diamond abrasive is added under mechanical stirring, and the diamond abrasive binding agent dry feed ratio in the range of 1 ~ 2; diamond abrasive quality to account for the total mass of the final wheel 60%〜70%,混合均匀后,将所得的混合浆料在50(TC-55(TC烘干、研磨破碎后过100-120目筛网,然后冷压成型,并在从室温到75(TC温度范围内烧结成金刚石砂轮。 60% ~ 70%, after mixing, the resulting slurry was mixed in 50 (TC-55 (TC drying, grinding broken through 100-120 mesh sieve, and then cold forming, and from 75 to room temperature ( within a temperature range of TC sintered diamond wheel.

所述的烧结工艺为,升温速率为3〜5。 The sintering process is a heating rate of 3 to 5. C/min,达到500。 C / min, up to 500. C后,保温40〜60 min;以2〜3 。 After C, holding 40~60 min; to ~ 3. C/min的速率升温至600。 Rate of C / min temperature increase to 600. C,保温30min,然后以2〜3。 C, holding 30min, then 2 to 3. C/min升至750。 C / min was raised to 750. C ,保温120min,最后自然冷却至常温。 C, holding 120min, and finally allowed to cool to room temperature.

目前陶瓷结合剂制备主要是采用固体块体和粉末玻璃化后机械破碎的方式,本发明突破传统砂轮结合剂的制备方法,先将工业级Si02溶胶(Si02固相百分含量30.45。/。,粒径12. 39nm)和分析纯级(物质纯度^99. 5%) NaN03, KN03, LiN03, H3B03等溶液机械搅拌混合, 其中NaNO;j, KN03, LiN03, 113803溶液浓度范围为10%-60%, 113803优选值为10%,其余溶液以50%为优选值。 Currently preparing a ceramic binding agent is mainly used a solid block and the mechanical crushing of the glass powder of the embodiment, the present invention breaks the traditional method of preparing grinding wheel bond, first industrial Si02 sol (Si02 30.45./ solid percentage., The particle size 12. 39nm) and analytically pure (purity of the substance ^ 99 5%) NaN03, KN03, LiN03, H3B03 mixing solution such as mechanical stirring, wherein NaNO; j, KN03, LiN03, 113803 solution concentration in the range of 10% -60 %, preferably 113,803 is 10%, the remaining solution was 50% a preferred value. 调整混合溶胶PH为4时加入工业级Al203溶胶(Al203百分含量28. 12%,在工业级八1203 溶胶体系中铝氯比A1/C1为1. 1,粒径10nm-20nm),如以100g Li20-Na20-K20-A1203- Mixed sol is added to adjust the PH When industrial grade Al203 sol. 4 (Al203 percentage of 28.12%, industrial-grade aluminum chloride in 1203 eight sol ratio A1 / C1 was 1.1, particle size of 10nm-20nm), such as to 100g Li20-Na20-K20-A1203-

B203-Si02陶瓷结合剂为例,上述各物料质量配比范围为:Si02溶胶130g-165g,Al203溶胶35g-55g, H3B03 30g-35g, LiN0340g-48g, NaN0318g-20g, KN0312g-16g。 B203-Si02 ceramic binding agent, for example, the mass ratio of each material in the range: Si02 sol 130g-165g, Al203 sol 35g-55g, H3B03 30g-35g, LiN0340g-48g, NaN0318g-20g, KN0312g-16g. 当混合溶胶粘度达到20mpa. s-40mpa. s范围内,在机械搅拌条件下加入金刚石磨料,(金刚石磨料的质量要占最后砂轮总质量的60%〜70%),均匀混合后,将浆料在50(TC-55(TC (优选值为50(TC)烘干、 研磨破碎后过100-120目筛网,然后20MPa冷压成型,并在72(TC-75(TC温度范围内烧结成砂轮。 When the mixed sol viscosity reaches 20mpa. S-40mpa. S within the range of diamond abrasive is added under mechanical stirring, (diamond abrasive mass to 60% ~ 70% of the total mass of the final wheel), homogeneously mixed slurry in 50 (TC-55 (TC (preferably 50 value (TC) drying, milling broken through 100-120 mesh, 20MPa then cold molded and sintered into inner (TC temperature range of 72 (TC-75 Grinding wheel.

本发明的思路是:利用溶胶的以下特点,将其应用于1^20-^20-1(20^1203- B203-Si02砂 Idea of ​​the present invention are: the use of a sol of the following characteristics, which is applied to 1 ^ 20- ^ 20-1 (20 ^ 1203- B203-Si02 sand

轮陶瓷结合剂的生产。 Production vitrified bond wheels. 溶胶,是一种在分散体系中保持固体物质不沉淀的胶体,这里的分散介质主要是液体,溶胶中的固体粒子大小为纳米级。 Sol, a solid matter does not precipitate remains in colloidal dispersion, the dispersion medium where the main liquid, the size of the solid particles in the sol of nanometers. 用溶胶所制备的粉末颗粒与传统制备方法相比,它具有掺杂物质多样化,制品均匀,纯度高,烧成温度低,颗粒粒度更能达到纳米级等优点。 Powder particles with the sol prepared as compared with the conventional production method, having a dopant species diversity, homogeneous products, high purity, low firing temperature, better particle size of nanometer advantages. 近年来,在陶瓷纤维,陶瓷玻璃等材料的制备方面得到了广泛应用,如已用 In recent years, in the preparation of a ceramic fiber material, glass and other ceramics have been widely used, it has been used as

Al203溶胶、Si02溶胶生产出MgO-Al203-Si02系微晶玻璃,该微晶玻璃具有低的介电常数、低的热膨胀系数、高的力学强度等广泛用于特种玻璃的制备。 Al203 sol, Si02 sol produced crystallized glass-based MgO-Al203-Si02, the crystallized glass having a low dielectric constant, low coefficient of thermal expansion, high mechanical strength like widely used for the preparation of specialty glass.

本发明的优点与效果: Advantages and effects of the present invention:

本发明采用陶瓷类组分的工业级Si02溶胶、Al203溶胶和分析纯级NaN03,KN03,LiN03,H3B03溶液液相混合的方法,制备出低熔点、高强度、超微粒度陶瓷结合剂以及砂轮。 The present invention uses ceramic components industrial Si02 sol, sol of Al203 and analytical grade NaN03, KN03, LiN03, H3B03 method of mixing a liquid phase prepared low melting point, high strength, ceramic binder and ultrafine size wheel. 具体包括以下特点: It includes the following features:

(1) 采用陶瓷类组分的溶胶和溶液液相混合,由于溶胶粒径为纳米级范围,其余多组分物质是以离子化合物溶液形式存在,将液相物质烘干后,所得制品的混合均匀度高,粒径 (1) mixing ceramic sol liquid component and a solution, since the nanometer size range of the sol, the remaining substance is present in the form multicomponent ionic compound solution, the liquid material after drying, mixing the resulting product evenness, the particle size

分布可达纳米级;如(图l)中白色团聚颗粒(lnm-100nm)为此发明方法所制Li20-Na20-K20- A1203- B203-Si02系陶瓷结合剂微粒。 Distribution can NM grade; as (FIG. L) white agglomerated particles (lnm-100nm) for this method of invention Li20-Na20-K20- A1203- B203-Si02-based ceramic particles made of binding agent.

(2) 所制结合剂由溶胶或溶液结合,因均匀性好,颗粒细小,比表面积大,表面能高 (2) binding agent prepared from a sol or solution, because good uniformity, small particles, large surface area, high surface energy

,具有高的烧结活性,所以在烧结过程中,各物料晶体间反应能垒低,烧结温度低,熔融反应充分,高温熔液分布均匀。 , Having a high sintering activity, during sintering, crystal materials among low energy barrier, low sintering temperature, the reaction sufficiently melted, the melt temperature distribution uniform. 用此方法所制备的结合剂耐火度范围在72(TC-75(rC;结合剂50(TC烘干后热膨胀系数5. 06*10—6-5. 68*10—6/卩之间;结合剂72(TC-75(TC烧结后抗折强度为101.8-105. 3 MPa。如用相同物料比例,采用玻化机械破碎法制备的1^20-^20-1(20-A1203- B203-Si02系陶瓷结合剂耐火度范围在760-78(TC,热膨胀系数为5. 32*10—6/°C ,在720 。C-75(TC烧结后抗折强度为87. 6MPa, 760-78(TC抗折强度为100. 2-104. 4 MPa,其材料性能劣于本发明制得的陶瓷结合剂的性能。 Refractoriness binding agent prepared by this method range in 72 (TC-75 (rC;. 50 binding agent (after drying a thermal expansion coefficient TC * 5.06 * 10-6 10-6-568 / Jie between; binding agent 72 (TC-75 (TC sintered bending strength 101.8-105. 3 MPa. as the proportion of the same material, mechanical disruption using glass transition Preparation of 1 ^ 20- ^ 20-1 (20-A1203- B203 -Si02 ceramic binding agent in the range of refractoriness 760-78 (TC, the thermal expansion coefficient of 5. 32 * 10-6 / ° C, in 720 .C-75 (TC sintered bending strength 87. 6MPa, 760- 78 (TC flexural strength of 100. 2-104. 4 MPa, is inferior to the performance properties of the material prepared by the invention is a ceramic binding agent.

(3) 本发明还能简化磨料与结合剂的混合,磨料与结合剂的混合在液态体系中进行, 浆料烘干,研磨,过筛后可获得磨料与结合剂混合均匀的成型料(图l);烧结过程中结合剂对金刚石磨料润湿性好,包覆完整,砂轮显微结构均匀(图2)。 (3) The present invention can also simplify the mixing with the binding agent, the abrasive, the abrasive mixed with a binding agent in liquid systems, pulp drying, grinding, sieving obtained binding agent mixed with the abrasive molding material (FIG. L); binding agent in the sintering process of diamond abrasive good wetting, complete coating, a uniform microstructure grinding wheel (FIG. 2).

陶瓷结合剂组成为(按重量百分数计(%)): Si02 40-45、 A1203 10-15、 B20318-20、 Li20 9-10、 Na207-8、 K20 7-6,烧结温度720-750°C ,烧结成型后抗折强度为IOI. 8-105. 3MPa;采用此方法制备陶瓷结合剂还能简化与金刚石磨料混合工艺,烧结后陶瓷结合剂对金刚石磨料包覆完整,砂轮表面硬度为99. 2〜110. 1HRB,气孔率为20%-28%,使用速度可达80-100m/s。 Vitrified bond composition (in percent by weight (%)): Si02 40-45, A1203 10-15, B20318-20, Li20 9-10, Na207-8, K20 7-6, the sintering temperature is 720-750 ° C , bending strength after sintering IOI 8-105 3MPa;.. with this method of producing vitrified bond and diamond abrasive simplifies the mixing process, the sintered ceramic binding agent coated diamond abrasive complete, the surface hardness of the wheel 99. 2~110. 1HRB, a porosity of 20% -28%, using a speed of up to 80-100m / s.

附图说明: BRIEF DESCRIPTION OF:

图l陶瓷结合剂粉碎料过120目筛后显微结构扫描电子图; 图2砂轮烧结后表面显微结构扫描电子图; 图3砂轮制备的工艺流程图。 Figure l vitrified bond crushed material through a scanning electron microscopic view of the structure 120 mesh sieve; surface microstructure by scanning electron view of FIG. 2 sintered wheel; FIG. 3 is a process flow diagram prepared wheel. 具体实施方式 detailed description

下面结合具体实施例对本发明作进一步详细说明。 Specific embodiments of the present invention in conjunction with the following described in further detail.

本发明专利制备Li20-Na20-K20-Al203-B203-Si02陶瓷结合剂采用的原料有:工业级Si02 溶胶(固相含量30.45%)与Al203溶胶(固相含量28. 12%),分析纯硝酸锂、硝酸钠、硝酸钾、硼酸等,并采用浓度为30。 Preparation of starting material of the present invention patent Li20-Na20-K20-Al203-B203-Si02 vitrified bond used are: industrial Si02 sol (solid content 30.45%) and Al203 sol (solid content of 28.12%), nitric acid, analytically pure lithium, sodium nitrate, potassium nitrate, boric acid, and use a concentration of 30. /。 /. 的硝酸为调节PH值,本发明以下实施例中的参数以制备100克Li20-Na20-K20-A1203-B203-Si02陶瓷结合剂为参考标准。 Nitric acid to adjust the PH value, the following parameters embodiment of the present invention to prepare a 100 g Li20-Na20-K20-A1203-B203-Si02 ceramic binder as the reference standard embodiments.

具体实施例l: DETAILED Example l:

<table>table see original document page 6</column></row> <table> <Table> table see original document page 6 </ column> </ row> <table>

按照上表所示配方首先将H3B03, LiN03, NaN03, KN03四种物质配备为混合溶液,其中H3B03溶液浓度为10。 According to the formulation shown in Table first H3B03, LiN03, NaN03, KN03 four substances mixed with a solution, wherein the solution concentration of 10 H3B03. /。 /. , LiN03, NaN03,履03溶液浓度为50%;称取工业级Si02溶胶,在搅拌条件缓慢加入上述混合溶液,用30。 , LiN03, NaN03, shoe 03 solution of 50%; grade Si02 sol were weighed, added slowly while stirring the mixed solution, 30. /。 /. HN03溶液调整混合溶胶PH为4时,加入工业级Al203溶胶,搅拌均匀,将此混合溶胶50(TC烘干,研磨,过120目筛网,所获得Li20-Na20-K20-A1203-B203-Si02陶瓷结合剂化学组成(wt%)范围如下表所示: HN03 mixed sol solution was adjusted to PH 4, technical grade Al203 sol was added, stirred uniformly, this mixed sol 50 (TC drying, grinding, through a 120 mesh screen, Li20-Na20-K20-A1203-B203-Si02 obtained vitrified chemical composition (wt%) range shown in the following table:

<table>table see original document page 6</column></row> <table> <Table> table see original document page 6 </ column> </ row> <table>

此结合剂耐火度为72(TC,抗折强 度为IOI. 8MPa,热膨胀系数为5. 68*10—7°C 。 为简化结合剂与金刚石磨料的混料程序,本发明以结合剂在混合溶胶液相状态加入金刚 This refractoriness is a binding agent 72 (TC, bending strength IOI. 8MPa, the thermal expansion coefficient of 5. 68 * 10-7 ° C. To simplify bond and diamond abrasive mixing procedure, the present invention is mixed to a binding agent sol liquid phase was added adamantyl

石磨料(粒径w3.5)。 Shi abrasive (particle diameter w3.5). 当混合溶胶粘度达到20mpa. s-40mpa. s范围内,在机械搅拌条件下加入金刚石磨料(金刚石磨料的质量要占最后砂轮总质量的60%〜70%)。 When the mixed sol viscosity reaches 20mpa. S-40mpa. S within the range of diamond abrasive is added under mechanical stirring (mass of diamond abrasive to 60% ~ 70% of the total mass of the last grinding wheel). 均匀混合后,将浆料50(TC烘干、研磨破碎后过120目筛网,以100g干料加入lg甲基纤维素水溶液为砂轮湿润剂, 然后20MPa冷压成型。砂轮烧结工艺为,升温速率为3〜5。C/min,达到50(TC后,保温40〜60 min;以2〜3。C/min的速率升温至600。C,保温30min,然后以2〜3。C/min升至730。C ,保温120min,最后自然冷却至常温。所制砂轮气孔率在20%〜26%,砂轮线速度可达80〜100 m/s。 After uniformly mixed, the slurry 50 (TC drying, grinding crushed through a 120 mesh screen, lg to 100g dry matter was added to an aqueous solution of methyl cellulose wheel wetting agent, and then cold forming 20MPa. Grindstone as sintering, heating rate 3~5.C / min, 50 (after TC, incubation 40~60 min; rate 2~3.C / min heating to 600.C, incubated 30min, then 2~3.C / min raised to 730.C, insulation 120min, and finally allowed to cool to room temperature. the prepared wheel porosity of 20% ~26%, wheel speed up to 80~100 m / s.

具体实施例2: Specific Example 2:

<table>table see original document page 6</column></row> <table><table>table see original document page 7</column></row> <table> <Table> table see original document page 6 </ column> </ row> <table> <table> table see original document page 7 </ column> </ row> <table>

按照」 匕表所示配方首先将H3B03, LiN03, NaN03,履03四种; 吻质配备为混合溶液,其中 H3B03溶液浓度为10。 According to "the formulation shown in Table dagger first H3B03, LiN03, NaN03, four kinds of shoe 03; kiss mass mixed with a solution, wherein the concentration of the solution 10 H3B03. /。 /. , LiN03, NaN03,履03溶液浓度为50%;称取工业级Si02溶胶,在搅拌条件逐滴加入上述混合溶液,用30。 , LiN03, NaN03, shoe 03 solution of 50%; grade Si02 sol were weighed, was added dropwise with stirring in the mixed solution, 30. /。 /. 丽03溶液调整混合溶胶PH为4时,加入工业级Al203溶胶,搅拌均匀,将此混合溶胶50(TC烘干,研磨,过120目筛网,所获得Li20-Na20-K20-A1203-B203-Si02陶瓷结合剂化学组成(wt%)范围如下表所示: 03 Li mixed sol solution was adjusted to PH 4, technical grade Al203 sol was added, stirred uniformly, this mixed sol 50 (TC drying, grinding, through a 120 mesh screen, the obtained Li20-Na20-K20-A1203-B203- Si02 vitrified chemical composition (wt%) range shown in the following table:

<table>table see original document page 7</column></row> <table> <Table> table see original document page 7 </ column> </ row> <table>

此结合剂耐火度为74(TC,抗折强 度为103. 2MPa,热膨胀系数为5. 31*10—7。C 。 与实施例l同样实验条件下所制备的金刚石砂轮,砂轮烧结工艺为,升温速率为3〜5'C /min,达到500。C后,保温40〜60 min;以2〜3。C/min的速率升温至600。C,保温30min,然后以2〜3。C/min升至740。C,保温120min,最后自然冷却至常温。气孔率在23%〜25%,砂轮线速度可达80〜100 m/s。 This refractoriness is a binding agent 74 (TC, bending strength 103. 2MPa, the thermal expansion coefficient of 5. 31 * 10-7.C. Diamond grindstone prepared in Example l under the same experimental conditions, a sintering process of the wheel, heating rate of 3~5'C / min, after reaching 500.C, insulation 40~60 min; rate 2~3.C / min heating to 600.C, incubated 30min, then 2~3.C / min to 740.C, insulation 120min, and finally allowed to cool to room temperature. porosity of 23% ~ 25%, up wheel speed 80~100 m / s.

具体实施例3: Specific Example 3:

<table>table see original document page 7</column></row> <table> <Table> table see original document page 7 </ column> </ row> <table>

按照上表所示配方首先将H3B03, LiN03, NaN03,履03四种物质配备为混合溶液,其中H3B03溶液浓度为10。 According to the formulation shown in Table first H3B03, LiN03, NaN03, shoe 03 is equipped with four substances mixed solution, wherein the solution concentration of 10 H3B03. /。 /. , LiN03, NaN03,履03溶液浓度为50%;称取工业级Si02溶胶,在搅拌条件逐滴加入上述混合溶液,用30。 , LiN03, NaN03, shoe 03 solution of 50%; grade Si02 sol were weighed, was added dropwise with stirring in the mixed solution, 30. /。 /. 丽03溶液调整混合溶胶PH为4时,加入工业级Al203溶胶,搅拌均匀,将此混合溶胶50(TC烘干,研磨后过120目筛网,所获得Li20-Na20-K20-A1203-B203-Si02陶瓷结合剂化学组成(wt%)范围如下表所示: 03 Li mixed sol solution was adjusted to PH 4, technical grade Al203 sol was added, stirred uniformly, this mixed sol 50 (TC drying, milling through a 120 mesh screen, the obtained Li20-Na20-K20-A1203-B203- Si02 vitrified chemical composition (wt%) range shown in the following table:

<table>table see original document page 7</column></row> <table> <Table> table see original document page 7 </ column> </ row> <table>

此结合剂耐火度为75(TC,抗折强 度为105. 3MPa,热膨胀系数为5. 06*10—7°C 。 与实施例l同样实验条件下所制备的金刚石砂轮,砂轮烧结工艺为,升温速率为3〜5'C /min,达到500。C后,保温40〜6Q min;以2〜3。C/min的速率升温至600。C,保温30min,然后以2〜3。C/min升至75(TC,保温120min,最后自然冷却至常温。气孔率在24%〜28%,砂轮线速度可达80〜100 m/s。 This refractoriness is a binding agent 75 (TC, bending strength 105. 3MPa, the thermal expansion coefficient of 5. 06 * 10-7 ° C. The diamond grinding wheel prepared in Example l under the same experimental conditions, a sintering process of the wheel, heating rate of 3~5'C / min, after reaching 500.C, insulation 40~6Q min; rate 2~3.C / min heating to 600.C, incubated 30min, then 2~3.C / min to 75 (TC, insulation 120min, and finally allowed to cool to room temperature. porosity of 24% ~28%, wheel speed up to 80~100 m / s.

Claims (4)

  1. 1.一种金刚石砂轮陶瓷结合剂的制备方法,其特征在于,包括以下步骤: 先将工业级SiO2溶胶和分析纯级NaNO3,KNO3,LiNO3,H3BO3溶液按照SiO2∶NaNO3∶KNO3∶LiNO3∶H3BO3质量为(40~50)∶(18~21.93)∶(12.22~15.04)∶(40~46)∶(30~35.52)的比例机械搅拌混合,其中NaNO3,KNO3,LiNO3,H3BO3溶液浓度范围为10%-60%;调整混合溶液PH为4~6,再按SiO2∶Al2O3质量比为(40~50)∶(10~15)的比例加入工业级Al2O3溶胶;将所得混合溶胶在500℃~550℃烘干、研磨破碎后过100-120目筛网,即制得金刚石砂轮陶瓷结合剂。 1. A method for preparing ceramic bond diamond wheel, characterized in that, comprising the steps of: SiO2 sol and a first industrial analytically pure NaNO3, KNO3, LiNO3, H3BO3 solution in accordance with the quality SiO2:NaNO3:KNO3:LiNO3:H3BO3 (40 to 50): (18 to 21.93): (12.22 - 15.04): (40 to 46): (30 to 35.52) ratio of mechanical stirring and mixing, wherein NaNO3, KNO3, LiNO3, H3BO3 concentration of the solution in the range of 10% 60%; the mixed solution to adjust the PH to 4-6, then SiO2:Al2O3 mass ratio of (40 to 50): (10 to 15) ratio of Al2O3 sol industrial added; the resulting mixed sol at 500 ℃ ~ 550 ℃ drying, grinding broken through 100-120 mesh, i.e., a diamond wheel to obtain a ceramic binding agent.
  2. 2.根据权利要求l所述的金刚石砂轮陶瓷结合剂的制备方法,其特征在于,陶瓷结合剂采用溶胶与溶液经液相混合的方法制备,H3B03溶液浓度为10呢, NaN03, KN03, LiN03溶液的浓度为50。 The production method of the vitrified bond diamond wheel according to claim l, wherein the ceramic binder sol solution was prepared using the method of mixing the liquid phase, the solution concentration of 10 H3B03 it, NaN03, KN03, LiN03 solution concentration of 50. /。 /. .
  3. 3.一种金刚石砂轮的制备方法,其特征在于,包括以下步骤:先将工业级Si02溶胶和分析纯级NaN03, KN03, LiN03, H3B03溶液按照Si02 :NaN03 :KN03 :LiN03 :H3B03质量为(40〜50) : (18〜21.93) : (12. 22〜15. 04) : (40〜46) : (30〜35.52)比例机械搅拌混合,其中NaN03,KN03,LiN03,H3B03溶液浓度范围为10。 3. A method of preparing a diamond grinding wheel, characterized by comprising the steps of: first Si02 sol industrial and analytical grade NaN03, KN03, LiN03, H3B03 solution according Si02: NaN03: KN03: LiN03: H3B03 mass (40 ~ 50): (18~21.93): (04 12 22~15): (40~46): (30~35.52) was stirred mechanically mixing ratio, wherein NaN03, KN03, LiN03, H3B03 solution concentration in the range of 10. /T60。 / T60. /。 /. ;调整混合溶胶PH为4〜6,按Si02: A1203质量比为(40〜50) : (10〜15)的比例加入工业级A1203溶胶;当混合溶胶粘度达到20mpa. s-40mpa. s范围内,在机械搅拌条件下加入金刚石磨料,金刚石磨料的质量占成型砂轮总质量的60%〜70%;,混合均匀后,将所得的混合浆料在50(TC-55(rC烘干、研磨破碎后过100-120目筛网,然后冷压成型,并从室温到75(TC温度范围内烧结成金刚石砂轮。 ; PH adjusted to 4 ~ 6 mixed sol, by Si02: A1203 mass ratio of (40~50): (10 ~ 15) is added in a proportion of industrial grade A1203 sol; when mixed sol viscosity reaches 20mpa s-40mpa s within range. after the diamond abrasive was added under mechanical stirring, a mass of diamond abrasive 60% ~ 70% of the total mass of the molding wheel ;, uniformly mixed, the resultant mixed slurry 50 (TC-55 (rC drying, grinding broken after over 100-120 mesh, and then cold forming, and from 75 to room temperature (the temperature range TC sintered diamond wheel.
  4. 4.根据权利要求3所述的金刚石砂轮的制备方法,其特征在于,所述的烧结工艺为,升温速率为3〜5。 4. A method of preparing a diamond grinding wheel according to claim 3, wherein said sintering process, for a heating rate of 3 to 5. C/min,从室温达到500。 C / min, from room temperature to 500. C〜550。 C~550. C后,保温40〜60 min;以2 〜3。 After C, holding 40~60 min; to 2 ~ 3. C/min的速率升温至600。 Rate of C / min temperature increase to 600. C〜650。 C~650. C,保温30min〜40 min,然后以2〜3。 C, holding 30min~40 min, and then 2 to 3. C/min升至720。 C / min was raised to 720. C〜750 °C,保温IOO min〜120min,最后自然冷却至常温。 C~750 ° C, insulation IOO min~120min, and finally allowed to cool to room temperature.
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CN102092010A (en) * 2010-12-09 2011-06-15 郭兵健 Method for preparing high-porosity ceramic cement grinding wheel for polishing silicon single crystal rods
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CN106826589A (en) * 2015-12-03 2017-06-13 台山市兰宝磨具有限公司 High-speed diamond grinding wheel and preparation method thereof
CN105729317A (en) * 2016-04-22 2016-07-06 柳州凯通新材料科技有限公司 Machining process for super-hard diamond grinding wheel
CN106145946A (en) * 2016-07-01 2016-11-23 湖南大学 Method for preparing ceramic bond grinding wheel with liquid-phase raw material technology
CN106926146A (en) * 2017-04-14 2017-07-07 河南工业大学 Nanometer combined ultrahard micropowder accumulation abrasive and preparation method thereof
CN107283329A (en) * 2017-08-09 2017-10-24 安徽昌悌进出口贸易有限公司 High-hardness heat resistant grinding wheel

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