鑄(zhu)鐵測量平(ping)板高強度灰口鑄(zhu)鐵HT200-250，工作面硬度為(wei)HB170-240，鑄(zhu)件經過兩次人工退火600℃-700℃或自然時效(xiao)2-3年，完全(quan)去除內應(ying)力，度穩定，耐磨性能(neng)好。

刮(gua)研(yan)平板的工(gong)(gong)作面(mian)采用(yong)刮(gua)研(yan)工(gong)(gong)藝，用(yong)涂色法(fa)進行(xing)檢(jian)驗，保證了(le)平面(mian)度。工(gong)(gong)作面(mian)一般(ban)為平面(mian)，也可根據(ju)要求加工(gong)(gong)長孔(kong)或圓孔(kong)等,其規(gui)格100×100—3000×6000(mm)， 殊(shu)規(gui)...

檢(jian)驗(yan)平板(ban)(ban)是(shi)(shi)為生(sheng)產車間或計(ji)量部門做jingmi測量用的基(ji)準(zhun)平面(mian)；同(tong)劃(hua)(hua)線平板(ban)(ban)相比，劃(hua)(hua)線平板(ban)(ban)是(shi)(shi)為生(sheng)產中做劃(hua)(hua)線用的基(ji)準(zhun)平面(mian)。 雖然這(zhe)兩種平板(ban)(ban)都是(shi)(shi)基(ji)準(zhun)平面(mian)，但是(shi)(shi)它們...