汽車的車門下部外(wai)飾板是通(tong)過(guo)卡(ka)(ka)扣與(yu)鈑(ban)金件卡(ka)(ka)接在(zai)一起,外(wai)飾板的邊(bian)緣位置與(yu)鈑(ban)金貼合,通(tong)過(guo)雙面膠粘接固定。
1、汽(qi)車(che)(che)覆蓋(gai)(gai)件(簡稱覆蓋(gai)(gai)件)是指構成汽(qi)車(che)(che)車(che)(che)身或駕駛室、覆蓋(gai)(gai)發動機和(he)底盤的(de)異(yi)形體表面和(he)內部的(de)汽(qi)車(che)(che)零(ling)件。汽(qi)車(che)(che)覆蓋(gai)(gai)件既是外觀(guan)裝(zhuang)飾性的(de)零(ling)件,又是封閉薄殼狀的(de)受(shou)力零(ling)件;
2、覆蓋(gai)件(jian)(jian)表面(mian)上任何微小(xiao)的(de)(de)缺陷(xian)都會在(zai)涂漆(qi)后引起光(guang)線的(de)(de)漫反(fan)射而損壞外形的(de)(de)美觀,因此覆蓋(gai)件(jian)(jian)表面(mian)不(bu)允許有波紋(wen)、皺(zhou)折、邊緣(yuan)拉(la)痕和(he)其他破壞表面(mian)美感的(de)(de)缺陷(xian)。歐、美、日等發達國(guo)家生產的(de)(de)A級表面(mian)精度的(de)(de)汽車覆蓋(gai)件(jian)(jian)有引擎(qing)蓋(gai)板(ban);
3、車(che)頂(ding)(ding)蓋(gai),左(zuo)、右車(che)側圍(wei),前(qian)、后車(che)門,前(qian)、后、左(zuo)、右翼子板(ban)(ban)(ban)(ban)(ban),行(xing)禮(li)箱蓋(gai)板(ban)(ban)(ban)(ban)(ban),發(fa)(fa)動機前(qian)支撐板(ban)(ban)(ban)(ban)(ban),發(fa)(fa)動機前(qian)裙板(ban)(ban)(ban)(ban)(ban),前(qian)圍(wei)上(shang)(shang)(shang)蓋(gai)板(ban)(ban)(ban)(ban)(ban),后圍(wei)板(ban)(ban)(ban)(ban)(ban),后圍(wei)上(shang)(shang)(shang)蓋(gai)板(ban)(ban)(ban)(ban)(ban),前(qian)裙板(ban)(ban)(ban)(ban)(ban),前(qian)框架,前(qian)翼子板(ban)(ban)(ban)(ban)(ban),車(che)輪擋(dang)泥板(ban)(ban)(ban)(ban)(ban)、后翼子板(ban)(ban)(ban)(ban)(ban)、后圍(wei)板(ban)(ban)(ban)(ban)(ban)、行(xing)李倉蓋(gai),后圍(wei)上(shang)(shang)(shang)蓋(gai)板(ban)(ban)(ban)(ban)(ban)、頂(ding)(ding)蓋(gai)、前(qian)圍(wei)側板(ban)(ban)(ban)(ban)(ban)、前(qian)圍(wei)板(ban)(ban)(ban)(ban)(ban)、前(qian)圍(wei)上(shang)(shang)(shang)蓋(gai)板(ban)(ban)(ban)(ban)(ban)、前(qian)擋(dang)泥板(ban)(ban)(ban)(ban)(ban)、發(fa)(fa)動機罩。覆蓋(gai)件(jian)的制造是汽車(che)車(che)身制造的關(guan)鍵環節。
前圍板(ban)是指(zhi)發動機(ji)(ji)艙與車(che)廂(xiang)之間的隔(ge)板(ban),它和地(di)板(ban)、前立(li)柱聯接,安(an)裝(zhuang)在前圍上(shang)蓋(gai)板(ban)之下。前圍板(ban)上(shang)有許多孔口,作為操縱用的拉線、拉桿、管路和電(dian)線束通過之用,還要(yao)配(pei)合踏(ta)板(ban)、方向機(ji)(ji)柱等機(ji)(ji)件安(an)裝(zhuang)位置。為防止(zhi)發動機(ji)(ji)艙里(li)的廢氣、高溫、噪聲竄入(ru)車(che)廂(xiang),前圍板(ban)上(shang)要(yao)有密封(feng)措施和隔(ge)熱裝(zhuang)置。在發生意外(wai)事故時,它應具有足(zu)夠的強(qiang)度(du)和剛度(du)。對比車(che)身其它部件而言(yan),前圍板(ban)裝(zhuang)配(pei)最重要(yao)的工藝(yi)技(ji)術(shu)是密封(feng)和隔(ge)熱,它的優劣往往反映了車(che)輛運行的質量(liang)。
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