檢(jian)(jian)(jian)驗彎板按/T 7974-2001標(biao)準制造，材(cai)料HT200-HT300，工(gong)(gong)作面(mian)(mian)采用(yong)刮研工(gong)(gong)藝，用(yong)于零(ling)部件(jian)的(de)檢(jian)(jian)(jian)測和(he)機(ji)(ji)械(xie)加工(gong)(gong)中的(de)裝(zhuang)夾。用(yong)于檢(jian)(jian)(jian)驗工(gong)(gong)件(jian)的(de)90°角，維(wei)修(xiu)設備時檢(jian)(jian)(jian)驗零(ling)部件(jian)相(xiang)關(guan)表面(mian)(mian)的(de)相(xiang)互(hu)垂(chui)(chui)(chui)直度(du)，還常用(yong)于鉗工(gong)(gong)劃線。并可(ke)常用(yong)于檢(jian)(jian)(jian)驗、安裝(zhuang)、機(ji)(ji)床機(ji)(ji)械(xie)的(de)垂(chui)(chui)(chui)直面(mian)(mian)檢(jian)(jian)(jian)查，并能(neng)在(zai)平板上檢(jian)(jian)(jian)查工(gong)(gong)件(jian)的(de)垂(chui)(chui)(chui)直度(du)，適用(yong)于高精度(du)機(ji)(ji)械(xie)和(he)儀器檢(jian)(jian)(jian)驗和(he)機(ji)(ji)床之間不垂(chui)(chui)(chui)直度(du)的(de)檢(jian)(jian)(jian)查。

　　檢(jian)驗彎板的參數：

　　檢驗彎(wan)板(ban)的(de)(de)承載、彎(wan)板(ban)的(de)(de)長寬高、彎(wan)板(ban)的(de)(de)外(wai)表精度、彎(wan)板(ban)的(de)(de)分量、彎(wan)板(ban)的(de)(de)材質要求等等。

　　鑄(zhu)造砂應(ying)滿足(zu)以(yi)下的(de)(de)要(yao)求：較(jiao)高(gao)的(de)(de)純度(du)和(he)潔凈度(du)，以(yi)硅砂為例，鑄(zhu)鐵(tie)用砂要(yao)求SiO2含(han)量在90以(yi)上，較(jiao)大(da)的(de)(de)鑄(zhu)鋼件則要(yao)求SiO2含(han)量在97以(yi)上;高(gao)的(de)(de)耐火度(du)和(he)熱穩定性(xing);適宜的(de)(de)顆(ke)粒形(xing)狀和(he)顆(ke)粒組成;不易被液態(tai)金屬潤濕。顆(ke)粒形(xing)狀鑄(zhu)造砂的(de)(de)形(xing)狀一般有3種。

　　圓(yuan)形(xing)(xing)砂(sha):顆粒(li)為圓(yuan)形(xing)(xing)或(huo)接近于圓(yuan)形(xing)(xing)，表面(mian)光(guang)潔，沒(mei)有突出(chu)的(de)棱(leng)角(jiao)(jiao)(jiao);多(duo)角(jiao)(jiao)(jiao)形(xing)(xing)砂(sha):顆粒(li)成多(duo)角(jiao)(jiao)(jiao)形(xing)(xing)，且(qie)多(duo)為鈍角(jiao)(jiao)(jiao);尖(jian)角(jiao)(jiao)(jiao)形(xing)(xing)砂(sha)，顆粒(li)成尖(jian)角(jiao)(jiao)(jiao)形(xing)(xing)，且(qie)多(duo)為銳角(jiao)(jiao)(jiao);鑄造砂(sha)的(de)顆粒(li)形(xing)(xing)狀(zhuang)一般以角(jiao)(jiao)(jiao)形(xing)(xing)系數(砂(sha)子實際比(bi)表面(mian)積/砂(sha)子理論比(bi)表面(mian)積)來(lai)表示。

　　使用注意事項：

　　檢驗彎(wan)板(ban)不要在潮濕、有腐蝕、過(guo)高和過(guo)低的溫度環境下使(shi)(shi)(shi)用(yong)和存放。在使(shi)(shi)(shi)用(yong)時要行(xing)彎(wan)板(ban)的安裝(zhuang)調試，然后，把彎(wan)板(ban)的工(gong)作面擦(ca)拭(shi)干凈，在確認(ren)沒(mei)有問題(ti)的情況(kuang)下使(shi)(shi)(shi)用(yong)彎(wan)板(ban)。

　　彎(wan)板(ban)精度：1級(ji)(ji)、2級(ji)(ji)、3級(ji)(ji)。