Examples of 'roughness ra' in a sentence
Meaning of "roughness ra"
The term 'roughness ra' is used in engineering and manufacturing to represent the average value of the surface roughness of a material. 'Ra' stands for 'roughness average' and refers to the arithmetic mean of the absolute values of the surface irregularities or deviations from the nominal surface
How to use "roughness ra" in a sentence
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roughness ra
The arithmetic roughness Ra after polishing was determined.
One plastiform have the technical ability to perform indirect roughness Ra controls.
Roughness Ra is equal to the height of the obtained strip.
Methods to determine the surface roughness Ra are known to the skilled person.
The roughness Ra is defined as the mean arithmetic deviation.
The roughness values relate to measurements of the average roughness Ra according to DIN.
The surface roughness Ra is the integral mean of the differences in absolute value.
In this embodiment, the ribs are replaced by a particular roughness Ra.
The surface roughness Ra of the thin alloy ribbon is preferably as small as possible.
Test piece surface condition recommended mean surface roughness Ra < 2 μm to minimize data scatter.
The surface roughness Ra is the arithmetic average of the absolute measured values.
At this stage of the process the sheet strip has a roughness Ra lower than 2 micrometers.
The roughness Ra of this hard base is 8 um.
Naturally, such a micro-sanding step has the effect of slightly increasing the surface roughness Ra.
For the samples, the surface roughness Ra was as shown in the following table.
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The roughness Ra of the surfaces of said rolls is greater than 5 um ;.
Said layer 3 advantageously has a surface roughness Ra of between 2 and 8 um.
Surface roughness Ra may be measured in two ways, contact and non-contact methods.
The inclined finishing surfaces 7 are finished to a surface roughness Ra of less than 0.3 µm.
The measurement zone 9 has a roughness Ra lower than the rest of the moulding surface.
Roughness Ra of this continuous hard base layer is comprised between 9 um and 12 um.
Thus a calculated surface roughness Ra in the range of 0 to 10 µm can be obtained.
Surfaces which are to house the bearings used must not have a roughness Ra exceeding 0.1.
The surface roughness Ra following the shot peening treatment was 1.4 µm.
It is more desirable that the surface roughness Ra is equal to or less than 0.045.
The roughness Ra of the layer is measured and the result obtained is Ra=15 um.
In this case, the surface roughness Ra can be reduced to 20µm or less.
The roughness Ra of the support film thus obtained is less than 0.01 um before coating.
It is noted that the initial 0.01 um roughness Ra is retained throughout dissolution.
The surface roughness Ra of the fiber-reinforced composite material was 0.38 µm, which was a satisfactory value.
After step a, the surface of the lens had a roughness Ra in the order of 0.18 um.
The surface roughness Ra of the oxide film is preferably 1.6a or less.
Herein, the center-line average surface roughness Ra is a value measured in conformity with JIS B0601.
Also a surface roughness Ra of 0.05 or less can be utilized without difficulty for a sliding component.
Surface profiles with an average roughness Ra of 1 to 15 microns are applicable for this invention.
The surface roughness Ra is determined according to ISO 468.
The rod surface may have a roughness Ra greater than 5 um, preferably greater than 50 um.
The surface roughness Ra is a surface shape parameter defined by JIS B 0601.
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