CN109176329A - 一种高强度金刚石磨具 - Google Patents

一种高强度金刚石磨具 Download PDF

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CN109176329A
CN109176329A CN201811010289.XA CN201811010289A CN109176329A CN 109176329 A CN109176329 A CN 109176329A CN 201811010289 A CN201811010289 A CN 201811010289A CN 109176329 A CN109176329 A CN 109176329A
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magnesia
dolime
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胡昌悌
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Wuhu Changling Diamond Tools Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
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    • B24D3/18—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings for porous or cellular structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite

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Abstract

本发明涉及金刚石技术领域，具体涉及一种高强度金刚石磨具，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂。本发明的强度高，具有优异的抗裂性能。

Description

一种高强度金刚石磨具
技术领域
本发明涉及金刚石技术领域，具体涉及一种高强度金刚石磨具。
背景技术
菱苦土制备氯氧镁水泥作金刚石器具结合剂早已应用于生产实践，并且技术和工艺都比较成熟。但是，现在工业上大量生产和使用的菱苦土，其原料资源分布和产地主要是辽宁及山东等省，将菱苦土运输到远离产地的其它省区使用，其运杂费比其当地的出厂价还高。苛性白云石也能制备氯氧镁水泥，而我国白云石矿资源丰富，产地遍布各省，各矿床多已开发利用。但将苛性白云石应用于结合剂鲜有报导。
发明内容
基于背景技术存在的技术问题，本发明提出了一种高强度金刚石磨具。本发明的强度高，具有优异的抗裂性能。
本发明提出的一种高强度金刚石磨具，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂。
优选地，所述煅烧白云石为改性煅烧白云石，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先干燥，接着煅烧，最后冷却，得到改性煅烧白云石。
优选地，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨至140-160目，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先在110-125℃下干燥1.5-3h，接着在850-950℃下煅烧4-5h，最后在密闭瓶中冷却至室温，得到改性煅烧白云石。
优选地，所述白云石、蒙脱土、花岗岩的质量比为2.5-3.5：1.5-2：0.3-0.6。
优选地，所述菱苦土、煅烧白云石、氯化镁的重量比为1：2-3：1-1.5。
优选地，所述氯化镁水溶液的质量分数为50-65wt％。
优选地，所述金刚石粉末和菱苦土结合剂的重量比为1-2：3-4。
优选地，所述金刚石粉末的粒径为60-130目。
本发明可按照常规方法进行制备。
本发明以菱苦土结合剂作为金刚石粉末的粘结剂，且结合剂由菱苦土与煅烧白云石复配而成，两者具有协效作用，与氯化镁水溶液搅拌成复合物能够显著提高本发明的强度，且能够弥补菱苦土单独作为结合剂易开裂的缺陷，有效提高本发明的抗裂性能。优选方案中，选择改性的煅烧白云石，在其制备过程中，将白云石、蒙脱土和花岗岩先混合造粒，接着煅烧，由于白云石自身机械强度低，适应性较差，故采用蒙脱土作为载体，复配花岗岩，提高白云石的机械强度和分散性能，同时充分利用了资源，节省了成本；此外，在煅烧的过程中，花岗岩中的硅氧化物能够与白云石煅烧形成的氧化镁发生化学反应，形成硅酸盐凝胶，有效提高本发明的致密度，进一步提高本发明强度和抗裂性能，且能改善本发明的耐水性。进一步优选方案中，调控菱苦土、煅烧白云石、氯化镁的重量比为1：2-3：1-1.5以及氯化镁水溶液的质量分数为50-65wt％，能够使得到的MgO-MgCl2-H2O相组成的晶状结构具有较高的强度，更进一步优化本发明的强度和抗裂性能。
具体实施方式
下面，通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种高强度金刚石磨具，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂。
实施例2
一种高强度金刚石磨具，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂；
其中，所述煅烧白云石为改性煅烧白云石，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先干燥，接着煅烧，最后冷却，得到改性煅烧白云石。
实施例3
一种高强度金刚石磨具，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂；
其中，所述煅烧白云石为改性煅烧白云石，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨至150目，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先在120℃下干燥2h，接着在900℃下煅烧4.5h，最后在密闭瓶中冷却至室温，得到改性煅烧白云石；
所述白云石、蒙脱土、花岗岩的质量比为3：1.8：0.5；
所述菱苦土、煅烧白云石、氯化镁的重量比为1：2.5：1.3；
所述氯化镁水溶液的质量分数为55wt％；
所述金刚石粉末和菱苦土结合剂的重量比为1.5：3.5；
所述金刚石粉末的粒径为90目。
实施例4
一种高强度金刚石磨具，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂；
其中，所述煅烧白云石为改性煅烧白云石，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨至140目，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先在125℃下干燥1.5h，接着在950℃下煅烧4h，最后在密闭瓶中冷却至室温，得到改性煅烧白云石；
所述白云石、蒙脱土、花岗岩的质量比为3.5：1.5：0.6；
所述菱苦土、煅烧白云石、氯化镁的重量比为1：2：1.5；
所述氯化镁水溶液的质量分数为50wt％；
所述金刚石粉末和菱苦土结合剂的重量比为2：3；
所述金刚石粉末的粒径为130目。
实施例5
一种高强度金刚石磨具，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂；
其中，所述煅烧白云石为改性煅烧白云石，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨至160目，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先在110℃下干燥3h，接着在850℃下煅烧5h，最后在密闭瓶中冷却至室温，得到改性煅烧白云石；
所述白云石、蒙脱土、花岗岩的质量比为2.5：2：0.3；
所述菱苦土、煅烧白云石、氯化镁的重量比为1：3：1；
所述氯化镁水溶液的质量分数为65wt％；
所述金刚石粉末和菱苦土结合剂的重量比为1：4；
所述金刚石粉末的粒径为60目。
试验例1
分别对实施例1-5得到的金刚石磨具和市面上的金刚石磨具进行强度测试，依次记为试验组1-5和对照组，试验结果如下表：
由上表可知，本发明具有较高的强度以及优异的抗裂性能。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (8)

1.一种高强度金刚石磨具，其特征在于，其原料包括金刚石粉末和菱苦土结合剂；所述菱苦土结合剂的制备方法为：将菱苦土、煅烧白云石和氯化镁水溶液混合，搅拌均匀，得到菱苦土结合剂。
2.根据权利要求1所述高强度金刚石磨具，其特征在于，所述煅烧白云石为改性煅烧白云石，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先干燥，接着煅烧，最后冷却，得到改性煅烧白云石。
3.根据权利要求2所述高强度金刚石磨具，其特征在于，所述改性煅烧白云石的制备方法为：将白云石、蒙脱土和花岗岩混合均匀，研磨至140-160目，加入胶黏剂，搅拌均匀，挤压，拉条，造粒；将成型的颗粒先在110-125℃下干燥1.5-3h，接着在850-950℃下煅烧4-5h，最后在密闭瓶中冷却至室温，得到改性煅烧白云石。
4.根据权利要求2或3所述高强度金刚石磨具，其特征在于，所述白云石、蒙脱土、花岗岩的质量比为2.5-3.5：1.5-2：0.3-0.6。
5.根据权利要求1或2所述高强度金刚石磨具，其特征在于，所述菱苦土、煅烧白云石、氯化镁的重量比为1：2-3：1-1.5。
6.根据权利要求1或2所述高强度金刚石磨具，其特征在于，所述氯化镁水溶液的质量分数为50-65wt％。
7.根据权利要求1或2所述高强度金刚石磨具，其特征在于，所述金刚石粉末和菱苦土结合剂的重量比为1-2：3-4。
8.根据权利要求1或2所述高强度金刚石磨具，其特征在于，所述金刚石粉末的粒径为60-130目。
CN201811010289.XA 2018-08-31 2018-08-31 一种高强度金刚石磨具 Pending CN109176329A (zh)

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CN114315307A (zh) * 2022-01-26 2022-04-12 华侨大学 一种耐水多孔菱苦土磨具及其制备方法

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Application publication date: 20190111