幫忙翻譯試驗規范
Pencil hardness
Fix the test piece on a horizontal stand with the coating surface upward,hod the pencil at an angle of approximately 45 degrees as shown in fig.1,while pressing the coating surface as strongly as possible to the degree so as the core not to be broken and press out forward to the testing person at a uniform speed by approximately 1 CM to scratch the coating surface. Make the press-out speed approximately 1 cm/s.
At each once scratching newly polish the top end of core of pencil,and repeat the test five times by pencil of the same concentration symbol.
When in five-time tests the rubbing flaw reaching the paint film twice or more is not confirmed,with exchanging with the pencil with upper concentration symbol carry out the test similarly,select the pencil by which the rubbing flaw of paint film becomes not less than twice and record the concentration symbol lower by one step than that of the pencil as the pencil hardness of paint film.
NOTE： The rubbing flaw means the flaw which slightly bite in the surface of paint film,and the dent of paint film by applying pressure is not the object.Remove the carbon powders by eraser so as not to flaw the paint film at the tested portion,observe visually vertically to the rubbing direction from the angle of 45 degrees to the surface of test piece,and take the judgeable flaw as the “rubbing flaw”.
以上
Fix the test piece on a horizontal stand with the coating surface upward,hod the pencil at an angle of approximately 45 degrees as shown in fig.1,while pressing the coating surface as strongly as possible to the degree so as the core not to be broken and press out forward to the testing person at a uniform speed by approximately 1 CM to scratch the coating surface. Make the press-out speed approximately 1 cm/s.
At each once scratching newly polish the top end of core of pencil,and repeat the test five times by pencil of the same concentration symbol.
When in five-time tests the rubbing flaw reaching the paint film twice or more is not confirmed,with exchanging with the pencil with upper concentration symbol carry out the test similarly,select the pencil by which the rubbing flaw of paint film becomes not less than twice and record the concentration symbol lower by one step than that of the pencil as the pencil hardness of paint film.
NOTE： The rubbing flaw means the flaw which slightly bite in the surface of paint film,and the dent of paint film by applying pressure is not the object.Remove the carbon powders by eraser so as not to flaw the paint film at the tested portion,observe visually vertically to the rubbing direction from the angle of 45 degrees to the surface of test piece,and take the judgeable flaw as the “rubbing flaw”.
以上
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lilianfa (威望:0) (广东 深圳)
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注：削纹即施压产生的侵入涂层表面的裂纹和凹坑，不是目标，用橡皮除去碳份，不让它弄污测试点的涂层表面，垂直观察削的方向，从倾斜角45度到测试件的表面，把可见的花纹当作削纹
以上，作参考