推荐回答(5个)
按展开面积算,油漆用量要算出油漆的涂布率。油漆的用量与被涂物得重量没有关系,只与被涂物的涂覆部分的面积有关,所以要想办法知道钢结构的面积。
以下数据是理论涂布率(仅供参考),实际用量乘上1.5-1.8的系数:75微米厚度的,大约8.5平方米/升;125微米厚度的,大约6.5平方米/升;200微米厚度的,大约4平方米/升。一般是使用容积单位来衡量的。
这里面有个变量,油漆的体积固体份含量。比如固体份含量是50%,那么湿膜厚100微米厚,固化后干膜厚是50微米。质量认证过的涂料包装上有,干膜厚=湿膜厚×体积固体份。
扩展资料:
实际生产中计算涂布率的方法
首先按国家标准“GB/T1758—1979(1989)涂料使用量测定法”在未经打磨的平整钢板上刷涂一定厚度、一定面积的漆膜,刷涂后立即用减量法称出刷涂量(精确至0.001
g),涂漆试板放置24
h,按下式计算涂料的使用量:
X=(m
1
-m
2
)/S×10
4
式中:X——使用量,g/m²
;m
l
——涂漆前漆刷及盛有试样的容器质量,g;m²
——涂漆后漆刷及盛有试样的容器质量,g;S——涂漆面积,cm²
。
这样得到的仍是质量表示法,为了换算成涂布率(m
2
/L),还需测出液体涂料的密度,并由下式计算出涂布率:
R=(1/Xρ
-1
)×10
3
式中:
R——涂布率,m²
/L;X——使用量,g/m²
;p——液体涂料的密度,g/mL。
再用磁性测厚仪测出样板上漆膜的平均厚度(μm),按下式计算出在要求的干膜厚度下的理论涂布率:理论涂布率=(涂布率×平均干膜厚度)/干膜厚度
平行测定3
次,取其中2
次接近的结果算术平均值。刷涂法简便易行,使用普遍,在涂刷操作正确熟练的前提下,准确度的关键在于使用的样板和漆膜厚度的测量。
参考资料:搜狗百科-涂布率
序号 钢材类别 截面面积计算公式 代号说明
1 圆钢、圆盘条、钢丝 F=0.785 4d2 d—外径
2 方钢 F=a2 a—边宽
3 圆角方钢 F=a2-0.858 4r2 a—边宽,r—圆角半径
4 六角钢 F=0.866a2=2.598s2 a—对边距离
s—边宽
5 八角钢 F=0.828 4a2=4.828 4s2
6 等边角钢 F=d(2b-d)+0.214 6(r2-2r12) d—边厚,b—边宽,
r—内面圆角半径,
r1—端边圆角半径
7 不等边角钢 F=d(B+b-d)+0.214 6(r2-2r12) d—边厚,B—长边宽,
b—短边宽,
r—内面圆角半径,
r1—端边圆角半径
8 工字钢 F=hd+2t(b-d)+0.58(r2-2r12) h—高度,b—腿宽,
d—腰厚,t—平均腿厚,
r—内面圆角半径,
r1—端边圆角半径
9 槽钢 F=hd+2t(b-d)+0.34(r2+r12)
10 钢板、扁钢、带钢 F=aδ a—边宽,δ—厚度
11 圆角扁钢 F=aδ-0.858 4r2 a—边宽,δ—厚度,r—圆角半径
12 钢管 F=3.141 6δ(D-δ) D—外径,δ—壁厚
槽钢,工字钢,圆钢,三角钢,都是展开钢铁一端,乘上长度,等于实际面积。我就是这样算的,做钢结构油漆三年了。
钢结构油漆面积是按照钢材实际展开面积计算,《钢结构工程施工质量验收规范》GB50205-2001对漆膜的厚度有要求,要求涂装两遍,厚度不低于65微米。允许偏差-10微米
你可以按每桶涂料能刷多少面积,总共用了多少桶来计算,(但不是很精确)如果要精确,那就只能先算出每种型材的每米平方量,然后再乘于总共多少米这样来计算,(但很麻烦,不过此方法也不是不能用,其实钢结构是由很多相同的构件组成的,你找到它的规律便可很快算出来)
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