花崗石平板精度：000級=1×(1+d/1000)um00級=2×(1+d/1000)um 0級=4×(1+d/1000)um1級=8×(1+d/1000)um（d為對角線mm ）計算平面度公差依GB4987-85標(biāo)準(zhǔn)：物理性能比重：2970-3070kg/㎡抗壓強度：245-254N/m㎡線膨脹系數(shù)：4.13% 肖氏硬度：Hs70以上 ，花崗石平板的特點主要是精度穩(wěn)定、維護(hù)方便。是用天然的石質(zhì)材料制成的精密基準(zhǔn)測量工具，對儀器儀表、精密工具、機(jī)械的檢驗，都是理想的基準(zhǔn)面?；◢徥桨逯饕V物成分為輝石，斜長石，少量橄欖石，黑云母以及微量磁鐵礦，黑色光澤，結(jié)構(gòu)精密，質(zhì)地均勻，穩(wěn)定性好、強度大、硬度高，能在重負(fù)荷下保持高精度。Reasons: ① granite slab structure dense, smooth surface wear, roughness values are small; ② granite by a long-term natural aging, the stress disappear, material stability, and will not be deformed; ③ alkali, acid resistance, corrosion, anti-magnetic; ④ moisture will not rust, easy to use and maintain; ⑤ linear expansion coefficient and the influence of temperature are smaller; ⑥ face scratched by the collision or after, only produce pits, does not produce convexity pattern burr, no effect on the measurement accuracy. Suitable for industrial production, laboratory measurements and measurement precision. 61 × 10-6 / ℃ water absorption: <0. Granite slab main drawback is that the impact can not be too much to bear, beat, will be deformation of high humidity, moisture absorption is 1%.

  泊頭市精固誠量具機(jī)械有限公司是泊頭一家較大的劃線平臺生產(chǎn)家，我公司主營產(chǎn)品有：鑄鐵類：鑄鐵平臺（平板）、檢驗平板（平臺）、劃線平臺（平板）、焊接平板（平臺），裝配平板（平臺），研磨平臺（平板），T型槽平板（平臺），調(diào)整墊鐵、機(jī)床墊鐵、階梯墊鐵、鑄鐵彎板、V型架、千斤頂等 產(chǎn)品關(guān)鍵詞： 蠟?zāi)ｈT件,