摘要
针对国内有钢厂使用欧洲标准DIN EN 10049—2006采用2.5 mm的长波滤波器的截止波长进行冷轧金属薄板表面粗糙度R_a的测试参数设置,与GB/T 2523—2008表面波纹度W_a测试"用于抑制短波部分的波长一般为0.8 mm"和"用于抑制长波部分的波长一般为8 mm"发生重叠的问题,从R_a和W_a的定义解读入手,系统地开展了麻面薄板R_a和W_a测试技术研究;通过诠释实现测试任务的滤波器的传输带原理,分析了对于R_a小于2μm的薄板进行R_a测试,其长波与短波滤波器之间的传输带不是越宽测试精度就越高的原因;同时提出并验证了以与ISO4288—1996匹配的0.8 mm的截止波长为基础,将取样区间数由5个增加到16个,使评定长度由4 mm加长到12.8 mm,作为沟通与DIN EN 10049—2006中12.5 mm的评定长度保持基本一致的新的系统解决方案。
On the issue of overlapping problem of European standard DIN EN 10049-2006 adopting 2. 5 mm long wave filter cut-off wavelength to measure the surface roughness Ra of cold rolled steel sheets and GB/T 2523-2008 adopting 0.8 mm short wave filter cut-off wavelength and 8 mm long wave filter cut-off wavelength to measure the surface waviness Wa, systematic measurement of Ra and Wa of stochastic surface cold rolled steel sheets was done starting from the interpretation of Ra and Wa. The reason of that the measurement accuracy didn＇t increased with the increase of the transmission band width between the short wave and the long wave for the steel sheets with Ra〈μm, was analyzed by interpreting the principle of the filter transmission band which completing the measurement. The method of increasing sampling interval numbers from 5 to 16 to make the evaluation length increase from 4 mm to 12.8 mm was raised and verified on the basis of 0. 8 mm cut-off wavelength of ISO 4288- 1996, as a solving method to coincide to the 12. 5 mm evaluation length of DIN EN 10049-2006.
出处
《理化检验（物理分册）》
CAS
2013年第10期637-646,共10页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
冷轧金属薄板
表面粗糙度
表面波纹度
截止波长
取样长度
评定长度
滤波器
cold rolled steel sheet
surface roughness
surface waviness
cut-off wavelength
samplinglength
evaluation length
filter
