由于大(da)理(li)石系非(fei)金屬(shu)材料，沒(mei)有(you)磁性(xing)(xing)(xing)反應，亦無(wu)塑(su)性(xing)(xing)(xing)變形。其(qi)硬(ying)度(du)(du)比(bi)鑄鐵高2－3倍(相當于HRC>51)，因此精(jing)(jing)(jing)度(du)(du)保持性(xing)(xing)(xing)好(hao)。在使用(yong)中巖石工(gong)具即使遭重(zhong)物磕碰，至多掉幾粒石碴(cha)而(er)已，而(er)不會(hui)像金屬(shu)工(gong)具那樣，因變形而(er)破壞精(jing)(jing)(jing)度(du)(du)。其(qi)優(you)于優(you)良(liang)鑄鐵和鋼材制作的(de)測(ce)量基準(zhun)零件(jian)，可以獲得高而(er)穩(wen)(wen)定(ding)的(de)精(jing)(jing)(jing)度(du)(du)。大(da)理(li)石平臺(tai)采用(yong)優(you)良(liang)的(de)   大(da)理(li)石料經(jing)機械加工(gong)，手(shou)工(gong)精(jing)(jing)(jing)研而(er)成。黑色光澤，結構質(zhi)地(di)均(jun)勻，穩(wen)(wen)定(ding)性(xing)(xing)(xing)好(hao)。強度(du)(du)大(da)、。并具有(you)：不生銹、不磁化、不變型、性(xing)(xing)(xing)好(hao)等(deng)優(you)點。能在重(zhong)負(fu)荷及一般溫度(du)(du)下保持穩(wen)(wen)定(ding)。

花(hua)(hua)(hua)(hua)崗石構件適用于(yu)機械(xie)工廠的(de)測(ce)量(liang)(liang)工具(ju)。花(hua)(hua)(hua)(hua)崗石平(ping)(ping)(ping)(ping)臺物(wu)理特性：比重(zhong)：2970～3070kg/㎡抗壓強(qiang)度：245～254N/m㎡強(qiang)性磨量(liang)(liang)：1.27～1.47N/m㎡線膨脹(zhang)系(xi)數：4.6×10～6℃吸水(shui)率：0.13%肖(xiao)氏強(qiang)度：HS70以上。花(hua)(hua)(hua)(hua)崗石平(ping)(ping)(ping)(ping)臺的(de)支撐：購買花(hua)(hua)(hua)(hua)崗石平(ping)(ping)(ping)(ping)臺時我們(men)還要購買一些花(hua)(hua)(hua)(hua)崗石平(ping)(ping)(ping)(ping)臺的(de)附(fu)件，比如支撐花(hua)(hua)(hua)(hua)崗石平(ping)(ping)(ping)(ping)板(ban)的(de)支架或千斤頂，是調平(ping)(ping)(ping)(ping)花(hua)(hua)(hua)(hua)崗石平(ping)(ping)(ping)(ping)板(ban)使用的(de)附(fu)件。

花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)構件(jian)的(de)(de)(de)生產制作(zuo)過(guo)程(cheng)中(zhong)可(ke)能(neng)會出現一些(xie)產品(pin)的(de)(de)(de)缺陷(xian)，只要(yao)采用正確的(de)(de)(de)工(gong)(gong)(gong)(gong)藝方(fang)法可(ke)以進行彌(mi)補維(wei)修。以下是花崗(gang)(gang)(gang)巖平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)成產中(zhong)的(de)(de)(de)技術(shu)注意事項：⒈花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)臺(tai)工(gong)(gong)(gong)(gong)作(zuo)面(mian)上(shang)不得有嚴重影(ying)響外觀和使用性(xing)能(neng)的(de)(de)(de)砂孔、縮松、劃(hua)痕、碰、氣孔、裂紋、夾渣銹跡等缺陷(xian)。⒉花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)臺(tai)非工(gong)(gong)(gong)(gong)作(zuo)面(mian)上(shang)的(de)(de)(de)凹陷(xian)或(huo)(huo)掉(diao)角允許修補。⒊花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)臺(tai)側(ce)面(mian)對(dui)工(gong)(gong)(gong)(gong)作(zuo)面(mian)的(de)(de)(de)垂直度(du)公差和平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)兩相鄰側(ce)面(mian)的(de)(de)(de)垂直度(du)公差均按GB/T1184中(zhong)規定的(de)(de)(de)12級(ji)。⒋花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)臺(tai)工(gong)(gong)(gong)(gong)作(zuo)面(mian)的(de)(de)(de)集中(zhong)載(zai)荷區域(yu)、施加的(de)(de)(de)額定載(zai)荷和允許撓度(du)值(zhi)見表3的(de)(de)(de)規定。⒌000級(ji)和00級(ji)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)建議不設置搬運手柄。⒍若(ruo)0級(ji)和1級(ji)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)面(mian)上(shang)設置螺紋孔(或(huo)(huo)溝槽)，其部位應(ying)不高于(yu)工(gong)(gong)(gong)(gong)作(zuo)面(mian)。⒎花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)臺(tai)應(ying)采用細(xi)晶粒(li)、結構致密的(de)(de)(de)輝長(chang)巖、輝綠巖、花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(黑云母應(ying)小于(yu)5%、彈性(xing)模量(liang)應(ying)大于(yu)0.6×10—4kg/cm2、吸水率應(ying)小于(yu)0.25%)等材料制造(zao)，其工(gong)(gong)(gong)(gong)作(zuo)面(mian)硬度(du)應(ying)大于(yu)70HS。⒏花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)臺(tai)工(gong)(gong)(gong)(gong)作(zuo)面(mian)的(de)(de)(de)表面(mian)粗糙度(du)Ra的(de)(de)(de)允許值(zhi)為0.32~0.63um，側(ce)面(mian)為10um。⒐花崗(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)臺(tai)工(gong)(gong)(gong)(gong)作(zuo)面(mian)的(de)(de)(de)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)面(mian)度(du)公差。⒑對(dui)采用對(dui)角線法或(huo)(huo)網(wang)格法檢驗平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)板(ban)(ban)工(gong)(gong)(gong)(gong)作(zuo)面(mian)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)面(mian)度(du)時，應(ying)檢驗氣平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)面(mian)波動量(liang)，工(gong)(gong)(gong)(gong)作(zuo)面(mian)的(de)(de)(de)平(ping)(ping)(ping)(ping)(ping)(ping)(ping)(ping)面(mian)波動量(liang)。