精密花崗石方尺的特性與優點(dian)
1,組(zu)織結構(gou)稠密(mi),表(biao)面光(guang)滑耐磨,粗糙度數(shu)值小;
2,花(hua)崗石經長期天(tian)然時效(xiao),內應力*消失(shi),材(cai)質穩定,不會變(bian)形;
3.耐(nai)(nai)酸(suan),耐(nai)(nai)堿,耐(nai)(nai)腐(fu)蝕(shi),抗磁(ci);
4.不(bu)會受潮生(sheng)銹,使用,維護方便;
5.線(xian)脹(zhang)系(xi)數小,受溫度影(ying)響小;
精密花崗石方尺是使用(yong)天然的(de)大理(li)石(shi)(shi)(shi)加(jia)工而成(cheng)(cheng),大理(li)石(shi)(shi)(shi)是重結(jie)(jie)晶的(de)石(shi)(shi)(shi)灰(hui)巖(yan)(yan)(yan),主要成(cheng)(cheng)分(fen)(fen)是CaCO3.石(shi)(shi)(shi)灰(hui)巖(yan)(yan)(yan)在(zai)高(gao)溫高(gao)壓下變(bian)軟,并在(zai)所(suo)含礦物質(zhi)發生變(bian)化時重新(xin)結(jie)(jie)晶形(xing)成(cheng)(cheng)大理(li)石(shi)(shi)(shi).大理(li)石(shi)(shi)(shi)是地殼(ke)(ke)中原有的(de)巖(yan)(yan)(yan)石(shi)(shi)(shi)經過地殼(ke)(ke)內(nei)高(gao)溫高(gao)壓作(zuo)用(yong)形(xing)成(cheng)(cheng)的(de)變(bian)質(zhi)巖(yan)(yan)(yan).地殼(ke)(ke)的(de)內(nei)力作(zuo)用(yong)促使原來的(de)各類巖(yan)(yan)(yan)石(shi)(shi)(shi)發生質(zhi)的(de)變(bian)化,即原來巖(yan)(yan)(yan)石(shi)(shi)(shi)的(de)結(jie)(jie)構(gou),構(gou)造和礦物成(cheng)(cheng)分(fen)(fen)發生改變(bian).經過質(zhi)變(bian)形(xing)成(cheng)(cheng)的(de)新(xin)的(de)巖(yan)(yan)(yan)石(shi)(shi)(shi)稱(cheng)為變(bian)質(zhi)巖(yan)(yan)(yan).大理(li)石(shi)(shi)(shi)主要由(you)(you)方解(jie)石(shi)(shi)(shi),石(shi)(shi)(shi)灰(hui)石(shi)(shi)(shi),蛇紋石(shi)(shi)(shi)和白云石(shi)(shi)(shi)組(zu)成(cheng)(cheng).其主要成(cheng)(cheng)分(fen)(fen)以碳(tan)酸鈣(gai)為主,約占(zhan)50%以上.由(you)(you)于大理(li)石(shi)(shi)(shi)一(yi)般(ban)都含有雜質(zhi),而且碳(tan)酸鈣(gai)在(zai)大氣中受二氧化碳(tan),碳(tan)化物,水氣的(de)作(zuo)用(yong),也容易風化和溶蝕(shi),而使表(biao)面很(hen)快失去光(guang)澤.大理(li)石(shi)(shi)(shi)主要用(yong)于加(jia)工成(cheng)(cheng)各種(zhong)形(xing)材,板材等(deng).所(suo)以大理(li)石(shi)(shi)(shi)方尺具有不變(bian)形(xing) 硬(ying)度高(gao) 耐磨(mo)性強(qiang),抗磨(mo)蝕(shi),耐高(gao)溫等(deng)特點.
1.大(da)(da)理(li)石(shi)方(fang)尺(chi)(chi),大(da)(da)理(li)石(shi)方(fang)尺(chi)(chi)生(sheng)(sheng)產(chan),大(da)(da)理(li)石(shi)方(fang)尺(chi)(chi)廠家雖然不會(hui)因(yin)硬物(wu)的(de)撞擊(ji),敲打而產(chan)生(sheng)(sheng)變(bian)形影響(xiang)精(jing)(jing)度,但是硬物(wu)撞擊(ji)其工作面時大(da)(da)理(li)石(shi)方(fang)尺(chi)(chi)會(hui)掉落石(shi)渣從而產(chan)生(sheng)(sheng)凹(ao)坑(keng),而工作面凹(ao)坑(keng)過(guo)多或(huo)者(zhe)過(guo)大(da)(da)會(hui)影響(xiang)大(da)(da)理(li)石(shi)方(fang)尺(chi)(chi)的(de)精(jing)(jing)度,所以平時在測量工件或(huo)使用(yong)中應注意(yi)輕拿輕放(fang)以免出現過(guo)多的(de)凹(ao)坑(keng),影響(xiang)其使用(yong)也影響(xiang)其美觀.