CN105563352A - 金属结合剂蜘蛛网状平面金刚石砂轮及其3d打印制作工艺 - Google Patents
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Abstract
本发明涉及一种金属结合剂蜘蛛网状平面金刚石砂轮及其3D打印制作工艺,属机械加工领域;蜘蛛网状工作层由实体与空隙在工作层工作面上沿径向与周向分布构成,利用激光烧结3D打印技术在过渡层上直接制作而得,与过渡层和金属基体共同构成平面金刚石砂轮整体。利用3D打印在平面砂轮工作面上实现了精密的蜘蛛网状结构,提供了空隙,实现了断续磨削,可以有效改善砂轮散热、冷却效果,降低磨削加工热损伤和提高磨削效率,能够有效解决砂轮堵塞的问题。
Description
技术领域
本发明主要属于机械加工领域,尤其涉及金属结合剂蜘蛛网状平面金刚石砂轮及其3D打印制作工艺。
背景技术
采用智能3D打印技术进行加工,具有生产速度快、精度高等特点。金属结合剂平面金刚石砂轮因其具有磨粒把持力强,结合强度高、耐磨性好、寿命长、能承受较大的磨削压力等特点,在高性能硬脆材料高效磨削中应用广泛。砂轮在磨削中无可避免将产生高温,而传统工艺制造的砂轮极易因此原因造成工作面的堵塞,进而导致砂轮过早失效或产生磨削热损伤,严重影响了零件加工质量和加工效率。
发明内容
本发明的目的是提供一种金属结合剂蜘蛛网状平面金刚石砂轮及其3D打印制作工艺。
本发明含机械加工而成的金属基体、粉末冶金法制成的过渡层和经激光烧结3D打印技术在过渡层上打印而成的蜘蛛网状工作层三个部分。蜘蛛网状工作层在径向上,由砂轮工作层平面圆心向外呈同心圆状分布切削实体,每个切削实体厚度为0.05~0.80mm,两切削实体间间距为0.01~0.10mm;在周向上,由砂轮工作层平面圆心辐射分布切削实体至平面外径,每个切削实体厚度为0.05~0.80mm,两切削实体间间距为0.01~0.10mm;切削实体交错形成的空隙在轴向上的深度为0.01~1.0mm;在工作层面的外径圆周侧位置,切削实体厚度比中间切削实体厚度大0.05~0.40mm;
金属结合剂蜘蛛网状平面金刚石砂轮制作方法如下:
第一步:进行金属基体机械加工;第二步:混合过渡层金属结合剂粉末并经粉末冶金法加工;第三步:混合工作层金属结合剂粉末、固体润滑剂和金刚石;第四步:在过渡层上利用激光熔化3D打印技术制作工作层;具体过程为:
先将激光烧结过程中的相关参数输入到计算机控制系统中,其中,激光功率为200~500W,扫描速率0.01~0.06m/s,粉层厚度0.02~0.50mm;后铺粉滚筒将供粉缸中的工作层粉末均匀地铺放于成形缸中的基板上,将粉末铺设成厚度为0.02~0.50mm的粉层,激光束根据计算机中的数据信息烧结粉层,完成第一个层面的烧结;然后成形缸活塞下降0.02~0.50mm,供粉缸活塞上升0.02~0.50mm,铺粉滚筒再次将粉末铺平,激光束依照计算机中的数据信息烧结第二层;重复上述工艺步骤,直至蜘蛛状工作层完成;第五步:开刃修整。
所述的金属结合剂蜘蛛网状平面金刚石砂轮配方为:
步骤二中所述过渡层金属结合剂粉末的配方是:过渡层金属结合剂粉末含钴粉、镍粉、铁粉、钛粉、铬粉、铜粉、锡粉、锌粉;其中钴粉、镍粉、铁粉、钛粉、铬粉粉末质量各占总质量的3%~60%;铜粉、锡粉、锌粉粉末质量各占总质量的3%~50%。所用过渡层金属结合剂粉末颗粒直径为0.05~0.28mm。
步骤三中所述工作层金属结合剂粉末、固体润滑剂和金刚石的配方是:工作层金属结合剂粉末含钴粉、镍粉、铁粉、钛粉、铬粉、钼粉、铜粉、锌粉;其中钴粉、镍粉、铁粉、钛粉、铬粉、钼粉粉末质量各占总质量的3%~60%;铜粉、锌粉粉末质量各占总质量的3%~40%;固体润滑剂为二硫化钼粉、石墨粉,其粉末质量占总质量的3%~20%,所用工作层粉末颗粒直径为0.05~0.28mm。所用的金刚石体积浓度在2%~75%之间,颗粒度为0.05~0.28mm。
利用3D打印在平面金刚石砂轮工作面上实现了精密的蜘蛛网状结构,提供了空隙,实现了断续磨削,可以有效改善砂轮散热、冷却效果,降低磨削加工热损伤和提高磨削效率,能够有效解决砂轮堵塞的问题。
附图说明
图1是本发明立体示意图;
图2是本发明蜘蛛网状工作层平面示意图。
具体实施方式
实施例1
如图1和图2所示,金属结合剂蜘蛛网状平面砂轮包含蜘蛛网状工作层1、过渡层2和金属基体3三部分。在蜘蛛网状工作层由切削实体4与空隙5沿径向与周向分布构成,在径向上由砂轮工作层平面圆心向外呈同心圆状分布切削实体,每切削实体厚度为0.5mm,两切削实体间间距为0.05mm;在周向上由砂轮工作层平面圆心辐射分布切削实体至平面外径,每切削实体厚度为0.5mm,两切削实体间间距为0.05mm;切削实体交错形成的空隙在轴向上的深度为0.05mm;在工作层面的外径圆周侧位置,切削实体厚度比中间其他部位的切削实体厚度大0.2mm。
其制作工艺流程为:
(1)砂轮金属基体的准备;
(2)过渡层结合剂混合;
(3)工作层结合剂混合;
(4)粉末冶金法烧结过渡层;
(5)打印工作层
选用合适的激光烧结熔融技术和相应的3D打印设备,将激光烧结过程中的相关参数输入到计算机控制系统中,其中,激光功率为500W,扫描速率0.04m/s,粉层厚度0.5mm;后铺粉滚筒将供粉缸中的工作层粉末均匀地铺放于成形缸中的基板上,将粉末铺设成厚度为0.5mm的粉层,激光束根据计算机中的数据信息烧结粉层,完成第一个层面的烧结;然后成形缸活塞下降0.5mm,供粉缸活塞上升0.5mm,铺粉滚筒再次将粉末铺平,激光束依照计算机中的数据信息烧结第二层;重复上述工艺步骤,直至蜘蛛状工作层打印完成;
(6)修磨开刃。
Claims (4)
1.一种金属结合剂蜘蛛网状平面金刚石砂轮,其特征在于:包含金属基体、过渡层和工作层,其中工作层平面呈蜘蛛网状。
2.根据权利要求1所述的金属结合剂蜘蛛网状平面金刚石砂轮,其特征在于:所述的蜘蛛网状工作层在径向上,由砂轮工作层平面圆心向外呈同心圆状分布切削实体,每个切削实体厚度为0.05~0.80mm,两切削实体间间距为0.01~0.10mm;在周向上,由砂轮工作层平面圆心辐射分布切削实体至平面外径,每个切削实体厚度为0.05~0.80mm,两切削实体间间距为0.01~0.10mm;切削实体交错形成的空隙在轴向上的深度为0.01~1.0mm;在工作层面外径圆周侧位置,切削实体厚度比中间切削实体厚度大0.05~0.40mm。
3.根据权利要求2所述的金属结合剂蜘蛛网状平面金刚石砂轮的3D打印制作工艺,其特征在于:
第一步:进行金属基体机械加工;第二步:混合过渡层金属结合剂粉末并经粉末冶金法加工;第三步:混合工作层金属结合剂粉末、固体润滑剂和金刚石;第四步:在过渡层上利用激光熔化3D打印技术制作工作层;具体过程为:
先将激光烧结过程中的相关参数输入到计算机控制系统中,其中,激光功率为200~500W,扫描速率0.01~0.06m/s,粉层厚度0.02~0.50mm;后铺粉滚筒将供粉缸中的工作层粉末均匀地铺放于成形缸中的基板上,将粉末铺设成厚度为0.02~0.50mm的粉层,激光束根据计算机中的数据信息烧结粉层,完成第一个层面的烧结;然后成形缸活塞下降0.02~0.50mm,供粉缸活塞上升0.02~0.50mm,铺粉滚筒再次将粉末铺平,激光束依照计算机中的数据信息烧结第二层;重复上述工艺步骤,直至蜘蛛状工作层完成;第五步:开刃修整。
4.根据权利要求3所述的金属结合剂蜘蛛网状平面金刚石砂轮的3D打印制作工艺,其特征在于:
步骤二中所述过渡层金属结合剂粉末的配方是:过渡层金属结合剂粉末含钴粉、镍粉、铁粉、钛粉、铬粉、铜粉、锡粉、锌粉;其中钴粉、镍粉、铁粉、钛粉、铬粉粉末质量各占总质量的3%~60%;铜粉、锡粉、锌粉粉末质量各占总质量的3%~50%,所用过渡层金属结合剂粉末颗粒直径为0.05~0.28mm;
步骤三中所述工作层金属结合剂粉末、固体润滑剂和金刚石的配方是:工作层金属结合剂粉末含钴粉、镍粉、铁粉、钛粉、铬粉、钼粉、铜粉、锌粉;其中钴粉、镍粉、铁粉、钛粉、铬粉、钼粉粉末质量各占总质量的3%~60%;铜粉、锌粉粉末质量各占总质量的3%~40%;固体润滑剂为二硫化钼粉、石墨粉,其粉末质量占总质量的3%~20%,所用工作层粉末颗粒直径为0.05~0.28mm,所用的金刚石体积浓度是2%~75%,颗粒度为0.05~0.28mm。
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CN106041767A (zh) * | 2016-07-12 | 2016-10-26 | 广东工业大学 | 一种带有内冷却微结构的树脂结合剂超硬磨具及其制造方法和应用 |
US10723041B2 (en) | 2016-10-28 | 2020-07-28 | Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs | Core drill bit |
CN106312843A (zh) * | 2016-10-31 | 2017-01-11 | 湖南城市学院 | 一种金刚石砂轮及其生产方法 |
CN110121400B (zh) * | 2016-12-23 | 2022-01-18 | 3M创新有限公司 | 聚合物粘结磨料制品及其制备方法 |
CN110121400A (zh) * | 2016-12-23 | 2019-08-13 | 3M创新有限公司 | 聚合物粘结磨料制品及其制备方法 |
CN106938335A (zh) * | 2017-04-05 | 2017-07-11 | 广东奔朗新材料股份有限公司 | 一种基于3d打印的金刚石磨轮机构 |
CN106938335B (zh) * | 2017-04-05 | 2019-08-13 | 广东奔朗新材料股份有限公司 | 一种基于3d打印的金刚石磨轮机构 |
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CN107866753A (zh) * | 2017-12-08 | 2018-04-03 | 清华大学 | 具有随机多孔结构金属结合剂砂轮、装置及制备工艺 |
CN108326764A (zh) * | 2018-05-03 | 2018-07-27 | 西安增材制造国家研究院有限公司 | 表面电镀磨料内喷润滑液砂轮及包括该砂轮的磨削装置 |
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CN109778180A (zh) * | 2019-02-28 | 2019-05-21 | 上海乾岳投资管理有限公司 | 一种控制铜渗透裂纹产生的激光熔覆方法 |
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US12064850B2 (en) | 2021-12-30 | 2024-08-20 | Saint-Gobain Abrasives, Inc. | Abrasive articles and methods for forming same |
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