
燒(shao)毛(mao)(mao)加(jia)工(gong)燒(shao)毛(mao)(mao)加(jia)工(gong)又稱(cheng)火燒(shao)加(jia)工(gong)、噴燒(shao)加(jia)工(gong),是(shi)利用組成花(hua)(hua)崗(gang)石(shi)的(de)(de)不同礦物顆(ke)粒熱脹系數的(de)(de)差異,用火焰噴燒(shao)使其(qi)表面部分顆(ke)粒熱脹破(po)裂脫落,形(xing)成起伏有(you)序的(de)(de)粗面紋飾。這(zhe)種粗面花(hua)(hua)崗(gang)石(shi)板(ban)材,非常(chang)的(de)(de)適合(he)于濕滑場所的(de)(de)地面裝飾和戶外的(de)(de)墻面裝飾。主要(yao)設備是(shi)花(hua)(hua)崗(gang)石(shi)自(zi)動燒(shao)毛(mao)(mao)機(ji)(ji)(ji)(ji)。6、輔助(zhu)(zhu)加(jia)工(gong)輔助(zhu)(zhu)加(jia)工(gong)是(shi)將已切齊(qi)、磨光(guang)的(de)(de)石(shi)材按(an)需(xu)要(yao)磨邊、倒角(jiao)、開(kai)孔洞(dong)(dong)、鉆(zhan)眼、銑槽、銑邊等(deng)。主要(yao)的(de)(de)加(jia)工(gong)設備有(you)自(zi)動磨邊倒角(jiao)機(ji)(ji)(ji)(ji)、仿(fang)形(xing)銑機(ji)(ji)(ji)(ji)、薄壁鉆(zhan)孔機(ji)(ji)(ji)(ji)、手持金剛石(shi)圓鋸、手持磨光(guang)拋光(guang)機(ji)(ji)(ji)(ji)等(deng)。7、檢驗修(xiu)補天然花(hua)(hua)崗(gang)石(shi)難(nan)免有(you)裂縫、孔洞(dong)(dong)等(deng)瑕疵,而(er)且在(zai)加(jia)工(gong)過(guo)程也難(nan)免會有(you)一些磕碰(peng),出現一些小缺陷(xian)。所以在(zai)加(jia)工(gong)完成后所有(you)的(de)(de)花(hua)(hua)崗(gang)巖板(ban)材都需(xu)要(yao)檢驗,首(shou)先要(yao)通過(guo)清(qing)洗,重慶石(shi)材加(jia)工(gong)然后是(shi)吹干檢驗,合(he)格品包裝入庫,而(er)不合(he)格產品則應先挑出來。

在(zai)(zai)(zai)兩個相互垂直在(zai)(zai)(zai)內的(de)方向鋪兩條干砂(sha)道路,讓他的(de)寬度(du)(du)要大于板寬的(de)寬度(du)(du),厚度(du)(du)要大于3cm。結合施工大樣圖及景觀鋪裝(zhuang)(zhuang)(zhuang)分區實際尺寸,把鋪裝(zhuang)(zhuang)(zhuang)板塊(kuai)排好(hao),重(zhong)慶(qing)青石(shi)板材(cai)以便檢(jian)查板塊(kuai)之間的(de)縫隙,核對(dui)板塊(kuai)與墻面、柱、洞(dong)口、樹池、側緣石(shi)、平緣石(shi)邊等部(bu)位的(de)相對(dui)位置。裝(zhuang)(zhuang)(zhuang)飾(shi)(shi)石(shi)材(cai)具備的(de)基(ji)本條件(jian)(jian)具備裝(zhuang)(zhuang)(zhuang)飾(shi)(shi)石(shi)材(cai)必須(xu)符(fu)合3條基(ji)本條件(jian)(jian)。①有外(wai)在(zai)(zai)(zai)美學裝(zhuang)(zhuang)(zhuang)飾(shi)(shi)性。這(zhe)是從視覺和人的(de)欣賞(shang)、歷史文化角(jiao)度(du)(du)認(ren)識(shi)的(de),重(zhong)慶(qing)青石(shi)板材(cai)各個民(min)族(zu)、地(di)域、習慣、喜好(hao)不(bu)(bu)同,使用(yong)(yong)的(de)裝(zhuang)(zhuang)(zhuang)飾(shi)(shi)石(shi)材(cai)色彩、種類也(ye)不(bu)(bu)同,重(zhong)慶(qing)青石(shi)板材(cai)但不(bu)(bu)管怎樣只要是作為裝(zhuang)(zhuang)(zhuang)飾(shi)(shi)裝(zhuang)(zhuang)(zhuang)修使用(yong)(yong)就必須(xu)要考慮石(shi)材(cai)的(de)外(wai)在(zai)(zai)(zai)美觀。這(zhe)是設計、選擇裝(zhuang)(zhuang)(zhuang)飾(shi)(shi)石(shi)材(cai)的(de)首要因(yin)素(su)。

長期以來,國內(nei)外專家學者對(dui)(dui)金剛石(shi)(shi)(shi)(shi)(shi)工(gong)(gong)具(ju)(ju)鋸(ju)切(qie)花崗巖(yan)的(de)(de)加(jia)(jia)工(gong)(gong)機(ji)(ji)理(li)、金剛石(shi)(shi)(shi)(shi)(shi)工(gong)(gong)具(ju)(ju)的(de)(de)磨損機(ji)(ji)理(li),以及鋸(ju)切(qie)加(jia)(jia)工(gong)(gong)過(guo)程中的(de)(de)鋸(ju)切(qie)力(li)做了大(da)(da)量試驗和(he)(he)研(yan)究(jiu),取(qu)得了令人矚(zhu)目的(de)(de)成(cheng)果,重(zhong)慶石(shi)(shi)(shi)(shi)(shi)材(cai)(cai)加(jia)(jia)工(gong)(gong)對(dui)(dui)石(shi)(shi)(shi)(shi)(shi)材(cai)(cai)鋸(ju)切(qie)加(jia)(jia)工(gong)(gong)及金剛石(shi)(shi)(shi)(shi)(shi)工(gong)(gong)具(ju)(ju)的(de)(de)研(yan)究(jiu)開發(fa)(fa)(fa)起到了積極的(de)(de)推(tui)動(dong)作(zuo)(zuo)用(yong)(yong)。裝修(xiu)石(shi)(shi)(shi)(shi)(shi)材(cai)(cai)的(de)(de)運用(yong)(yong)你可知(zhi)怎樣選擇一(yi)般(ban)咱們的(de)(de)石(shi)(shi)(shi)(shi)(shi)材(cai)(cai)多用(yong)(yong)于(yu)修(xiu)建,機(ji)(ji)械方(fang)面,重(zhong)慶石(shi)(shi)(shi)(shi)(shi)材(cai)(cai)加(jia)(jia)工(gong)(gong)廠告訴咱們多選用(yong)(yong)哪些石(shi)(shi)(shi)(shi)(shi)材(cai)(cai)!1、大(da)(da)理(li)石(shi)(shi)(shi)(shi)(shi)大(da)(da)理(li)石(shi)(shi)(shi)(shi)(shi)是(shi)地(di)(di)殼(ke)華夏有的(de)(de)巖(yan)石(shi)(shi)(shi)(shi)(shi)經過(guo)地(di)(di)殼(ke)內(nei)高溫高壓作(zuo)(zuo)用(yong)(yong)構成(cheng)的(de)(de)變(bian)(bian)質(zhi)(zhi)巖(yan)。地(di)(di)殼(ke)的(de)(de)內(nei)力(li)作(zuo)(zuo)用(yong)(yong)促進正本的(de)(de)各類(lei)巖(yan)石(shi)(shi)(shi)(shi)(shi)發(fa)(fa)(fa)作(zuo)(zuo)質(zhi)(zhi)的(de)(de)改(gai)動(dong),即正本巖(yan)石(shi)(shi)(shi)(shi)(shi)的(de)(de)構造、構造和(he)(he)礦藏成(cheng)分發(fa)(fa)(fa)作(zuo)(zuo)改(gai)動(dong)。經過(guo)突(tu)變(bian)(bian)構成(cheng)的(de)(de)新的(de)(de)巖(yan)石(shi)(shi)(shi)(shi)(shi)稱為(wei)變(bian)(bian)質(zhi)(zhi)巖(yan)。由于(yu)石(shi)(shi)(shi)(shi)(shi)材(cai)(cai)異(yi)形加(jia)(jia)工(gong)(gong)機(ji)(ji)械大(da)(da)理(li)石(shi)(shi)(shi)(shi)(shi)一(yi)般(ban)都富含雜質(zhi)(zhi),并且碳(tan)(tan)酸鈣在大(da)(da)氣(qi)中受二氧化(hua)(hua)碳(tan)(tan)、碳(tan)(tan)化(hua)(hua)物(wu)、水氣(qi)的(de)(de)作(zuo)(zuo)用(yong)(yong),也簡(jian)略風(feng)化(hua)(hua)和(he)(he)溶蝕,而(er)使(shi)表面很快(kuai)失去光澤。大(da)(da)理(li)石(shi)(shi)(shi)(shi)(shi)一(yi)般(ban)性質(zhi)(zhi)比照軟,這是(shi)相對(dui)(dui)于(yu)花崗石(shi)(shi)(shi)(shi)(shi)而(er)言的(de)(de)。

彭水建筑雅士白大理石服務商近年來中國作為石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)開采(cai)和(he)(he)加(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)(de)領頭國,生產240個品種的(de)(de)(de)(de)花崗石(shi)(shi)(shi)(shi)(shi)(shi),石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)總產量約(yue)占(zhan)世界的(de)(de)(de)(de)65%。在(zai)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工(gong)(gong)(gong)(gong)中,石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)工(gong)(gong)(gong)(gong)具占(zhan)有(you)(you)重(zhong)要地(di)位。石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工(gong)(gong)(gong)(gong)主要包括石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)鋸(ju)割(ge)(ge)(ge)(ge)(ge)、石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)磨(mo)削(xue)和(he)(he)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)拋光。石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)具主要采(cai)用(yong)金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)磨(mo)料和(he)(he)陶瓷(ci)磨(mo)料。在(zai)加(jia)工(gong)(gong)(gong)(gong)中,鋸(ju)切加(jia)工(gong)(gong)(gong)(gong)是機(ji)(ji)械加(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)(de)一道(dao)工(gong)(gong)(gong)(gong)序,鋸(ju)切加(jia)工(gong)(gong)(gong)(gong)成(cheng)本占(zhan)整個加(jia)工(gong)(gong)(gong)(gong)成(cheng)本的(de)(de)(de)(de)50%以上(shang)。目前(qian),石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)等硬(ying)脆材(cai)(cai)(cai)(cai)料的(de)(de)(de)(de)切割(ge)(ge)(ge)(ge)(ge)加(jia)工(gong)(gong)(gong)(gong)主要采(cai)用(yong)各種金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)切割(ge)(ge)(ge)(ge)(ge)工(gong)(gong)(gong)(gong)具。由(you)于金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)是自然界已知的(de)(de)(de)(de)硬(ying)物質,其優異性(xing)能決定其在(zai)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)等硬(ying)脆材(cai)(cai)(cai)(cai)料切割(ge)(ge)(ge)(ge)(ge)加(jia)工(gong)(gong)(gong)(gong)領域具有(you)(you)廣(guang)闊的(de)(de)(de)(de)發展(zhan)前(qian)景。應用(yong)金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)具鋸(ju)切硬(ying)脆材(cai)(cai)(cai)(cai)料的(de)(de)(de)(de)加(jia)工(gong)(gong)(gong)(gong)方式(shi)主要有(you)(you)圓鋸(ju)片切割(ge)(ge)(ge)(ge)(ge)、金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)帶鋸(ju)切割(ge)(ge)(ge)(ge)(ge)、金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)框架鋸(ju)切割(ge)(ge)(ge)(ge)(ge)、金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)串珠(zhu)繩鋸(ju)切割(ge)(ge)(ge)(ge)(ge)等。重(zhong)慶石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工(gong)(gong)(gong)(gong)盡(jin)管每種方法有(you)(you)不同的(de)(de)(de)(de)特點和(he)(he)應用(yong)范圍,但其切割(ge)(ge)(ge)(ge)(ge)機(ji)(ji)理(li)和(he)(he)金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)磨(mo)損(sun)機(ji)(ji)理(li)卻(que)大致相同。由(you)于切割(ge)(ge)(ge)(ge)(ge)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)是金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)切割(ge)(ge)(ge)(ge)(ge)工(gong)(gong)(gong)(gong)具主要的(de)(de)(de)(de)用(yong)途,因此,深入(ru)研究石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)鋸(ju)切機(ji)(ji)理(li)和(he)(he)金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)切割(ge)(ge)(ge)(ge)(ge)工(gong)(gong)(gong)(gong)具的(de)(de)(de)(de)磨(mo)損(sun)機(ji)(ji)理(li)對(dui)于金剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)切割(ge)(ge)(ge)(ge)(ge)工(gong)(gong)(gong)(gong)具的(de)(de)(de)(de)合理(li)制造與正確使用(yong)具有(you)(you)重(zhong)要意(yi)義(yi)。

跟(gen)(gen)著加(jia)工設備和(he)(he)(he)加(jia)工技(ji)術(shu)的(de)(de)(de)(de)跋(ba)涉以(yi)及生(sheng)態觀(guan)念的(de)(de)(de)(de)加(jia)強,使(shi)得(de)(de)石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)可(ke)以(yi)加(jia)工成很薄(bo)(bo)(bo)(bo)的(de)(de)(de)(de)厚度,一(yi)(yi)(yi)般石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)從25mm厚度翻(fan)開到(dao)薄(bo)(bo)(bo)(bo)板(ban)(ban)12 mm再到(dao)超薄(bo)(bo)(bo)(bo)板(ban)(ban)5mm用(yong)了(le)近(jin)十年(nian)的(de)(de)(de)(de)時刻,因(yin)(yin)石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)是(shi)不可(ke)再生(sheng)本錢(qian),在往后石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)的(de)(de)(de)(de)厚度可(ke)以(yi)將會越來越薄(bo)(bo)(bo)(bo)。此外(wai),計算機在石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)的(de)(de)(de)(de)薄(bo)(bo)(bo)(bo)型(xing)化加(jia)工中(zhong)也起到(dao)了(le)重(zhong)要的(de)(de)(de)(de)作(zuo)(zuo)用(yong),可(ke)以(yi)使(shi)得(de)(de)石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)變的(de)(de)(de)(de)精巧,跋(ba)涉石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)的(de)(de)(de)(de)裝(zhuang)修功(gong)用(yong)。如石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工數(shu)控技(ji)術(shu)。跟(gen)(gen)著石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工技(ji)術(shu)的(de)(de)(de)(de)不斷翻(fan)開,重(zhong)慶石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工對一(yi)(yi)(yi)些新的(de)(de)(de)(de)石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)加(jia)工辦法和(he)(he)(he)技(ji)術(shu)得(de)(de)到(dao)翻(fan)開和(he)(he)(he)延伸,石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)薄(bo)(bo)(bo)(bo)板(ban)(ban)可(ke)以(yi)與(yu)(yu)不一(yi)(yi)(yi)樣質地的(de)(de)(de)(de)基(ji)材(cai)(cai)(cai)(cai)經過(guo)膠勃劑復合到(dao)一(yi)(yi)(yi)同,使(shi)石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)運用(yong)的(de)(de)(de)(de)領域和(he)(he)(he)運用(yong)本錢(qian)得(de)(de)到(dao)較好的(de)(de)(de)(de)改善(shan)。像石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)與(yu)(yu)鋁(lv)蜂(feng)窩板(ban)(ban)復合,3一(yi)(yi)(yi)5mm分配的(de)(de)(de)(de)石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)薄(bo)(bo)(bo)(bo)板(ban)(ban)與(yu)(yu)鋁(lv)蜂(feng)窩基(ji)板(ban)(ban)膠鉆復合到(dao)一(yi)(yi)(yi)同,既(ji)節約了(le)石(shi)(shi)(shi)料又減輕了(le)制(zhi)品的(de)(de)(de)(de)分量(liang),可(ke)以(yi)較好的(de)(de)(de)(de)將石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)作(zuo)(zuo)用(yong)體(ti)現在一(yi)(yi)(yi)些對承重(zhong)有著較高需(xu)求的(de)(de)(de)(de)園(yuan)林建筑中(zhong)。薄(bo)(bo)(bo)(bo)型(xing)、超薄(bo)(bo)(bo)(bo)型(xing)天然石(shi)(shi)(shi)材(cai)(cai)(cai)(cai)因(yin)(yin)“薄(bo)(bo)(bo)(bo)”而降低本錢(qian),以(yi)其(qi)薄(bo)(bo)(bo)(bo)、輕、透(tou)的(de)(de)(de)(de)優良特性已(yi)廣(guang)泛被認為是(shi)二十一(yi)(yi)(yi)世(shi)紀理(li)想的(de)(de)(de)(de)綠(lv)色(se)環保建材(cai)(cai)(cai)(cai)之一(yi)(yi)(yi)。

復合(he)(he)結(jie)構(gou)(gou)復合(he)(he)阻(zu)尼(ni)(ni)結(jie)構(gou)(gou)在(zai)減(jian)振(zhen)降(jiang)(jiang)噪(zao)工程結(jie)構(gou)(gou)上也開(kai)始應(ying)(ying)用(yong),它(ta)是薄彈性(xing)材(cai)(cai)料將幾(ji)層(ceng)板(ban)粘(zhan)結(jie)在(zai)一(yi)(yi)起的(de)(de)(de)具有(you)(you)(you)高(gao)(gao)阻(zu)尼(ni)(ni)特(te)性(xing),并保持(chi)金屬板(ban)材(cai)(cai)料強(qiang)度(du)(du)的(de)(de)(de)約(yue)束阻(zu)尼(ni)(ni)層(ceng)結(jie)構(gou)(gou),阻(zu)尼(ni)(ni)層(ceng)厚度(du)(du)為0.10mm。在(zai)常溫和高(gao)(gao)溫(80—100℃)下具有(you)(you)(you)良好的(de)(de)(de)阻(zu)尼(ni)(ni)特(te)性(xing),它(ta)對(dui)振(zhen)動能量的(de)(de)(de)消散,從一(yi)(yi)般(ban)普通彈性(xing)變(bian)形(xing)作功(gong)(gong)力(li)消耗,提高(gao)(gao)為高(gao)(gao)彈性(xing)體變(bian)形(xing)的(de)(de)(de)做功(gong)(gong)消耗,使(shi)變(bian)形(xing)滯后應(ying)(ying)力(li)的(de)(de)(de)程度(du)(du)增(zeng)加(jia),另外,這(zhe)種約(yue)束阻(zu)尼(ni)(ni)結(jie)構(gou)(gou)拉壓變(bian)形(xing)所消散的(de)(de)(de)能量,消耗因子一(yi)(yi)般(ban)在(zai)0.3以上,大(da)(da)峰值(zhi)(zhi)可在(zai)0.85,并且是有(you)(you)(you)寬頻帶控制(zhi)(zhi)特(te)性(xing),在(zai)很大(da)(da)的(de)(de)(de)頻率范圍內起到(dao)抑制(zhi)(zhi)峰值(zhi)(zhi)的(de)(de)(de)作用(yong),鋸片基(ji)體常用(yong)的(de)(de)(de)復合(he)(he)阻(zu)尼(ni)(ni)層(ceng)結(jie)構(gou)(gou)為2層(ceng)。利用(yong)復合(he)(he)阻(zu)尼(ni)(ni)結(jie)構(gou)(gou)的(de)(de)(de)鋸片基(ji)體有(you)(you)(you)如下特(te)點:(1)鋸片的(de)(de)(de)校平(ping)及(ji)應(ying)(ying)力(li)的(de)(de)(de)調整難度(du)(du)很大(da)(da);(2)生(sheng)產效(xiao)率較低(di),成本較高(gao)(gao);(3)加(jia)工處(chu)理技(ji)術不(bu)當,基(ji)體會缺乏軸向剛(gang)性(xing)。安裝及(ji)使(shi)用(yong)方法降(jiang)(jiang)噪(zao)1、夾盤(pan)(pan)改(gai)造降(jiang)(jiang)噪(zao)(1)在(zai)不(bu)影響鋸切高(gao)(gao)度(du)(du)前提下,應(ying)(ying)盡量加(jia)大(da)(da)鋸片的(de)(de)(de)夾盤(pan)(pan)直徑(jing)(jing),這(zhe)樣可以提高(gao)(gao)鋸片剛(gang)性(xing),減(jian)少彎曲振(zhen)動,對(dui)降(jiang)(jiang)低(di)振(zhen)動噪(zao)聲是及(ji)其有(you)(you)(you)效(xiao)的(de)(de)(de),實驗研究證明,當夾盤(pan)(pan)直徑(jing)(jing)加(jia)大(da)(da)到(dao)鋸片直徑(jing)(jing)的(de)(de)(de)3/4倍時,減(jian)噪(zao)佳。(2)為了增(zeng)加(jia)鋸片的(de)(de)(de)彈性(xing),使(shi)其受力(li)均勻,在(zai)夾盤(pan)(pan)上開(kai)一(yi)(yi)圈槽(cao),嵌(qian)入(ru)橡膠條或軟金屬。