Erosive jet micro-machining and vibratory surface finishing: optimization and modeling
侵蚀喷射微加工和振动表面精加工:优化和建模
基本信息
- 批准号:RGPIN-2014-03608
- 负责人:
- 金额:$ 2.84万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2014
- 资助国家:加拿大
- 起止时间:2014-01-01 至 2015-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The proposed research pertains to two manufacturing processes: A) erosive jet micro-machining and B) vibratory surface finishing. Both processes involve the controlled application of erosion to remove material, and can also be used to change the surface properties of metals, ceramics and plastics. Erosive jet micro-machining uses either high-speed jets of air with abrasive particles (abrasive jet micro-machining, AJM) or jets of water with abrasive particles (abrasive slurry jet micro-machining, ASJM). Both techniques have great potential as versatile, low-cost, environmentally-friendly approaches to the fabrication of small-scale features that are difficult to make with traditional techniques such as milling and acid etching. Potential applications span an extremely wide range from aerospace (e.g. turbine blades) to components used in micro-fluidics, optoelectronics and microelectronics. Moreover, AJM and ASJM do not involve hazardous etching chemicals, and do not suffer from tool wear, vibration, or heating. The proposed research will explore the possibility of the AJM of glass and ceramic components without the use of erosion resistant masks, in a “direct-write” mode. This would be a major breakthrough in reducing costs and machining times, but the blast zone needs to be more highly focused to make this a reality. ASJM can already make smaller features, since it uses a liquid abrasive slurry jet, and we plan to extend our existing work on the use of long-chain polymer additives in the abrasive slurry to increase the focusing of the jet. This will be of significant value in the proposed research on the micro-machining of metallic components, particularly those advanced ultra-hard materials that are used to achieve wear resistance and high strength, often at extreme temperatures. These materials are very difficult to micro-machine using other approaches. Therefore, another part of our plan is to explore the possibility that ASJM can be combined with electro-chemical micro-machining (ECM, a type of focused corrosion) to accelerate the rate at which such metallic materials can be machined. Vibratory surface finishing is a widely-used manufacturing process for deburring, polishing, burnishing, texturing, hardening and cleaning metal, ceramic and plastic parts. A bed of solid particles (typical dimension 1 cm) is fluidized using vibrations and develops a circulatory flow into which parts are entrained and become subject to the action of the impacting media. The proposed research will develop models to describe the relationships between the local particle impact velocity and the many process parameters, such as the shape of the particles and the vibrations of the container walls. This information concerning the particle impact velocities is of fundamental importance to the prediction of the rate and extent of surface finishing. This could be of significant benefit given that there are in excess of 2,000 vibratory finishing machines in Ontario alone, used in a wide variety of industries and applications such as removing burrs in steel stampings, parting lines in metal and plastic castings, hardening and texturing in high-voltage electrical connectors, polishing of plastics and metals, and parts cleaning (personal communications with Dr. L. Nichol, Vibra Finish Ltd.). Furthermore, aspects of the research will be applicable to a variety of related processes involving erosive wear and the impact of flowing granular media (e.g. abrasive flow machining, fluidized bed machining, centrifugal disk finishing, polishing and tumbling, drag finishing).
提出的研究涉及两种制造工艺:A)侵蚀射流微加工和B)振动表面精加工。这两种方法都涉及到控制侵蚀的应用,以去除材料,也可以用来改变金属,陶瓷和塑料的表面特性。冲蚀射流微加工采用带磨料颗粒的高速空气射流(磨料射流微加工,AJM)或带磨料颗粒的水射流(磨料浆射流微加工,ASJM)。这两种技术都具有巨大的潜力,它们是通用的、低成本的、环保的方法,可以制造难以用铣削和酸蚀刻等传统技术制造的小尺寸特征。潜在的应用范围非常广泛,从航空航天(例如涡轮叶片)到微流体、光电子和微电子中使用的组件。此外,AJM和ASJM不涉及危险的蚀刻化学品,并且不会受到工具磨损,振动或加热的影响。拟议的研究将探索在不使用抗侵蚀掩模的情况下,以“直接写入”模式对玻璃和陶瓷部件进行AJM的可能性。这将是降低成本和加工时间的重大突破,但要实现这一目标,需要高度集中在爆炸区域。ASJM已经可以制作更小的特征,因为它使用液体研磨浆射流,我们计划扩展我们在研磨浆中使用长链聚合物添加剂的现有工作,以增加射流的聚焦。这将在金属部件的微加工研究中具有重要价值,特别是那些用于在极端温度下实现耐磨性和高强度的先进超硬材料。这些材料很难用其他方法进行微加工。因此,我们计划的另一部分是探索ASJM与电化学微加工(ECM,一种聚焦腐蚀)相结合的可能性,以加快此类金属材料的加工速度。振动表面处理是一种广泛应用于金属、陶瓷和塑料零件去毛刺、抛光、抛光、变形、硬化和清洁的制造工艺。固体颗粒床(典型尺寸为1厘米)利用振动流化并形成循环流,其中部分被夹带并受到冲击介质的作用。拟议的研究将开发模型来描述局部颗粒撞击速度与许多工艺参数之间的关系,例如颗粒的形状和容器壁的振动。这些关于颗粒撞击速度的信息对于预测表面精加工的速度和程度是至关重要的。考虑到仅在安大略省就有超过2000台振动精加工机器,这可能是一个显著的好处,用于各种行业和应用,如去除钢冲压件中的毛刺,金属和塑料铸件的分型线,高压电连接器的硬化和变形,塑料和金属的抛光,以及零件的清洁(与L. Nichol博士,Vibra Finish Ltd.的个人通信)。此外,该研究的各个方面将适用于涉及侵蚀磨损和流动颗粒介质影响的各种相关工艺(如磨料流加工、流化床加工、离心盘精加工、抛光和翻滚、阻力精加工)。
项目成果
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{{ truncateString('Spelt, Jan', 18)}}的其他基金
Erosive jet micro-machining and vibratory surface finishing: optimization and modeling
侵蚀喷射微加工和振动表面精加工:优化和建模
- 批准号:
RGPIN-2014-03608 - 财政年份:2018
- 资助金额:
$ 2.84万 - 项目类别:
Discovery Grants Program - Individual
Erosive jet micro-machining and vibratory surface finishing: optimization and modeling
侵蚀喷射微加工和振动表面精加工:优化和建模
- 批准号:
RGPIN-2014-03608 - 财政年份:2017
- 资助金额:
$ 2.84万 - 项目类别:
Discovery Grants Program - Individual
Erosive jet micro-machining and vibratory surface finishing: optimization and modeling
侵蚀喷射微加工和振动表面精加工:优化和建模
- 批准号:
RGPIN-2014-03608 - 财政年份:2016
- 资助金额:
$ 2.84万 - 项目类别:
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High strain rate fracture of solder joints and underfill adhesives
焊点和底部填充粘合剂的高应变率断裂
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401218-2010 - 财政年份:2015
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Creep modeling of precision adhesive joints in opto-electronic devices
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Erosive jet micro-machining and vibratory surface finishing: optimization and modeling
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- 批准号:
RGPIN-2014-03608 - 财政年份:2015
- 资助金额:
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Creep modeling of precision adhesive joints in opto-electronic devices
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- 资助金额:
$ 2.84万 - 项目类别:
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