光学轮廓测量在加工零件上的粗糙度

应用笔记简介

Surface topography affects the appearance, functionality, and performance of a material, which makes it a critical consideration for materials science in a wide range of industries.表面形貌会影响材料的外观,功能和性能,这使其成为广泛行业中材料科学的关键考虑因素。 For example, on a macroscopic scale topography can dictate if a surface appears shiny or matte;例如,在宏观尺度上,地形可以指示表面是否看起来发亮或无光泽。 or it can determine if a mechanical seal is airtight or if it leaks.或可以确定机械密封是否气密或是否泄漏。 In particular, precision machining often requires stringent control of surface topography to meet industry-driven roughness specifications or standards.特别地,精密加工通常需要表面构形的严格控制,以满足工业驱动的粗糙度规范或标准。 Common machining processes include milling, grinding, lapping, reaming, and turning.常见的加工工艺包括铣削,磨削,研磨,铰孔,并转动。 These processes utilize different machines and approaches to controllably remove material from a piece of raw material and create a part with the desired shape, finish and function.这些过程利用不同的机器和方法可控地从一块原材料中去除材料,并创建具有所需形状,表面和功能的零件。

Characterizing surface topography is possible with a technique called Optical Profilometry (OP), which is also known as White Light Interferometry (WLI).使用称为光学轮廓测量(OP)的技术(也称为白光干涉测量(WLI))可以表征表面形貌。 In this application note, OP is used to measure the roughness of reference coupons (Flexbar, Islandia, New York, USA) that were machined in various ways to different roughness specifications.在本应用笔记中,OP用于测量参考样板(Flexbar,Islandia,纽约,美国)的粗糙度,这些样板以各种方式加工成不同的粗糙度规格。 Additionally, the surface finish of a vacuum flange is determined as an example of characterizing the topography of an unknown sample.另外,确定真空法兰的表面光洁度是表征未知样品形貌的一个例子。

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