CN107162588A - 一种全瓷义齿用氧化锆瓷块的制作方法 - Google Patents

一种全瓷义齿用氧化锆瓷块的制作方法 Download PDF

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CN107162588A
CN107162588A CN201710480238.2A CN201710480238A CN107162588A CN 107162588 A CN107162588 A CN 107162588A CN 201710480238 A CN201710480238 A CN 201710480238A CN 107162588 A CN107162588 A CN 107162588A
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porcelain
artificial tooth
zirconium oxide
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刘光荣
朱爱萍
朱曰春
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Shaoxing Huajing Sci-Tech Co Ltd
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Abstract

本发明公开一种全瓷义齿用氧化锆瓷块的制作方法，属于缺失牙修复用的全瓷义齿材料领域，包括以下步骤：先以锆瓷混料为原料，并采用注射成型工序制得全瓷义齿用氧化锆瓷块坯料，接着全瓷义齿用氧化锆瓷块坯料依次经过排腊工序、低温预烧结工序、机械加工工序、丝网印刷工序，最后检验包装成成品。通过本发明所制得的全瓷义齿用氧化锆瓷块，内部材质均匀性好且密度大、断裂强度高。由本发明全瓷义齿用氧化锆瓷块所制成的全瓷义齿内冠机械强度高，材料密度高。本发明全瓷义齿用氧化锆瓷块，经过CAD/CAM设计并加工制成全瓷义齿内冠坯料，再进行烧结，以达到临床使用要求的强度和美观效果。

Description

一种全瓷义齿用氧化锆瓷块的制作方法
技术领域
本发明公开一种全瓷义齿用氧化锆瓷块的制作方法，属于缺失牙修复用的全瓷义齿材料领域。
背景技术
在缺失牙修复中，全瓷义齿采用越来越普遍。在缺失牙修复中，义齿的强度和美观度显得十分重要。
在已有技术中，常见的全瓷义齿用氧化锆瓷块的制作方法，常用的有“干压成型”或“等静压成型”。
陶瓷成型是陶瓷件制备工艺中重要环节，成型的陶瓷坯料内部均匀度和致密度是直接关联最终烧结后陶瓷件的质量。由于成型过程所造成的缺陷往往是陶瓷产品的主要危险缺陷，控制和消除这些缺陷产生客观要求，促使陶瓷成型工艺不断深入研究和创新。一般来说，“干压成型”是使用造粒料来加工制造成的陶瓷坯料，其内部密度均匀性较差，“等静压成型”也是利用造粒料来加工制成陶瓷坯料，其内部密度均匀性只能说比较好。因为是造粒料成型，后续工序中无需经过排腊工序，直接预烧结后机械加工。基于此，申请人认为现有的全瓷义齿氧化锆瓷块的制作方法还有待改进，本案由此产生。
发明内容
本发明的目的是提供一种产品内部材质均匀性好且密度大、断裂强度高的全瓷义齿用氧化锆瓷块的制作方法。
为达到上述目的，本发明所采用的技术方案为：
一种全瓷义齿用氧化锆瓷块的制作方法，包括以下步骤：先以锆瓷混料为原料，并采用注射成型工序制得全瓷义齿用氧化锆瓷块坯料，接着全瓷义齿用氧化锆瓷块坯料依次经过排腊工序、低温预烧结工序、机械加工工序、丝网印刷工序，最后检验包装成成品。
本发明中，因为注射成型是使用锆瓷混料（属于黏塑性料）来加工成型坯料，所制成的陶瓷坯料内部材质均匀性好，在经过排腊、低温预烧结等工序后，成品密度大，断裂强度高。一般来说，陶瓷生产行业中认为，“注射成型”的锆瓷产品强度，比用“干压成型”的锆瓷产品，其断裂强度可提升20%以上。
作为上述方案的进一步设置，所述注射成型工序采用注塑机进行，包括将锆瓷混料在高温高压的状态下，注射进入模具型腔中而成型，其中的高温为180℃±30℃，高压为70Mpa±25Mpa。
所述排腊工序采用热风排腊，热风温度从常温逐渐升到500℃±100℃，升温曲线0.5℃/分±0.1℃/分。
所述低温预烧结工序的温度从常温逐渐升到1000℃±100℃，升温曲线1℃/分±0.2℃/分。
所述全瓷义齿用氧化锆瓷块坯料可以是圆柱体，长方体及定制几何体。
通过本发明所制得的全瓷义齿用氧化锆瓷块，内部材质均匀性好且密度大、断裂强度高。由本发明全瓷义齿用氧化锆瓷块所制成的全瓷义齿内冠机械强度高，材料密度高。本发明全瓷义齿用氧化锆瓷块，经过CAD/CAM设计并加工制成全瓷义齿内冠坯料，再进行烧结，以达到临床使用要求的强度和美观效果。
通过本发明所制得的全瓷义齿用氧化锆瓷块，不光可以用来制造全瓷义齿内冠，也可用来制造锆瓷基台和锆瓷种植体。
以下结合附图和具体实施方式对本发明作进一步说明。
附图说明
图1为本发明中注射成型工序的工作状态示意图。
具体实施方式
本发明一种全瓷义齿用氧化锆瓷块的制作方法，包括以下步骤：先以锆瓷混料为原料，并采用注射成型工序制得全瓷义齿用氧化锆瓷块坯料，接着全瓷义齿用氧化锆瓷块坯料依次经过排腊工序、低温预烧结工序、机械加工工序、丝网印刷工序，最后检验包装成成品。
本实施例中，注射成型工序采用注塑机进行，包括将锆瓷混料在高温高压的状态下，注射进入模具型腔中而成型，其中的高温为180℃±30℃，高压为70Mpa±25Mpa。
结合图1所示，注射成型工序的具体过程如下：
在料斗1中加入锆瓷混料，经螺杆2挤压产生压力，同时电热丝3加热提升温度，处于高温高压状态下的锆瓷混料在料咀6处喷入模具型腔7中成型为坯料。动力***4带动螺杆2旋转，产生压力，油缸5推动料咀6与模具型腔7紧密结合，以便锆瓷混料经料咀6喷入模具型腔7中，这样，锆瓷混料在高温高压下进入模具，生成的坯料内部材质均匀，结构致密，能最终提高锆瓷坯料的质量。
本实施例中，排腊工序采用热风排腊，热风温度从常温逐渐升到500℃±100℃，保温1-2小时后，逐步降温。其中，升温曲线为0.5℃/分±0.1℃/分。
本实施例中，低温预烧结工序的温度从常温逐渐升到1000℃±100℃，保温1-2小时后，逐步降温。其中，升温曲线为1℃/分±0.2℃/分。
本实施例中，全瓷义齿用氧化锆瓷块坯料可以是圆柱体，长方体及定制几何体。
锆瓷混料可以在市场上购买到。也可根据具体产品需求，自行配制。
本实施例中，锆瓷混料配方如下（质量百分比）：
氧化锆：74%±1.5%，氧化铪4%±0.5%，氧化铝0.5%±0.2%，氧化钇5%±0.5%，氧化铁≤0.5%，聚乙烯5%±1%，乙烯一醋酸乙烯共聚物3%±0.5%，石腊7%±1.5%，邻苯二甲酸二辛酯2%±0.5%。
以上实例仅作为本发明的进一步说明，本发明的技术方案在权利要求中已有描述，在不改变本发明基本工艺原理的前提下，所作出的变更和改进，均在本发明的保护范围之内。

Claims (5)

1.一种全瓷义齿用氧化锆瓷块的制作方法，其特征在于包括以下步骤：先以锆瓷混料为原料，并采用注射成型工序制得全瓷义齿用氧化锆瓷块坯料，接着全瓷义齿用氧化锆瓷块坯料依次经过排腊工序、低温预烧结工序、机械加工工序、丝网印刷工序，最后检验包装成成品。
2.如权利要求1所述的一种全瓷义齿用氧化锆瓷块的制作方法，其特征在于：所述注射成型工序采用注塑机进行，包括将锆瓷混料在高温高压的状态下，注射进入模具型腔中而成型，其中的高温为180℃±30℃，高压为70Mpa±25Mpa。
3.如权利要求1或2所述的一种全瓷义齿用氧化锆瓷块的制作方法，其特征在于：所述排腊工序采用热风排腊，热风温度从常温逐渐升到500℃±100℃，升温曲线0.5℃/分±0.1℃/分。
4.如权利要求1或2所述的一种全瓷义齿用氧化锆瓷块的制作方法，其特征在于：所述低温预烧结工序的温度从常温逐渐升到1000℃±100℃，升温曲线1℃/分±0.2℃/分。
5.如权利要求1所述的一种全瓷义齿用氧化锆瓷块的制作方法，其特征在于：所述全瓷义齿用氧化锆瓷块坯料可以是圆柱体，长方体及定制几何体。
CN201710480238.2A 2017-06-22 2017-06-22 一种全瓷义齿用氧化锆瓷块的制作方法 Pending CN107162588A (zh)

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CN110002866A (zh) * 2019-03-26 2019-07-12 合肥卓越义齿制作有限公司 一种全瓷义齿用氧化锆瓷块的制备方法
CN113999007A (zh) * 2021-11-26 2022-02-01 上海陶宝陶瓷新材料开发有限公司 氧化锆多层色彩仿真陶瓷义齿生产工艺
CN114368966A (zh) * 2021-03-26 2022-04-19 浙江丹斯登生物材料有限公司 一种氧化锆基全瓷义齿及其制备方法

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CN110002866A (zh) * 2019-03-26 2019-07-12 合肥卓越义齿制作有限公司 一种全瓷义齿用氧化锆瓷块的制备方法
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CN113999007A (zh) * 2021-11-26 2022-02-01 上海陶宝陶瓷新材料开发有限公司 氧化锆多层色彩仿真陶瓷义齿生产工艺

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Application publication date: 20170915