峻宏(hong)貿易公(gong)司工字型(xing)鋼不論是(shi)普通型(xing)還是(shi)輕型(xing)的(de)，由(you)于(yu)截(jie)面(mian)(mian)(mian)尺寸均(jun)相對(dui)較高、較窄，故對(dui)截(jie)面(mian)(mian)(mian)兩個主軸(zhou)的(de)慣性矩相差(cha)較大(da)，故僅能直接用(yong)(yong)于(yu)在其腹(fu)板(ban)平面(mian)(mian)(mian)內(nei)受彎(wan)的(de)構(gou)(gou)(gou)件(jian)(jian)或(huo)將其組成(cheng)格構(gou)(gou)(gou)式(shi)受力構(gou)(gou)(gou)件(jian)(jian)。對(dui)軸(zhou)心受壓構(gou)(gou)(gou)件(jian)(jian)或(huo)在垂直于(yu)腹(fu)板(ban)平面(mian)(mian)(mian)還有(you)彎(wan)曲的(de)構(gou)(gou)(gou)件(jian)(jian)均(jun)不宜采用(yong)(yong)，這就使其在應用(yong)(yong)范圍上有(you)著很大(da)的(de)局(ju)限。
工(gong)(gong)(gong)字(zi)鋼廣泛(fan)地(di)應用(yong)于建筑或 其他金屬(shu)結構(gou)。 普通工(gong)(gong)(gong)字(zi)鋼，輕(qing)型(xing)工(gong)(gong)(gong)字(zi)鋼，由于截面(mian)尺寸均(jun)相對(dui)較高、較窄，故對(dui)截面(mian)兩(liang)個主軸的(de)(de)慣性(xing)(xing)矩相差較大，這(zhe)就使其在(zai)應用(yong)范圍上(shang)有(you)著很大的(de)(de)局(ju)限(xian)。工(gong)(gong)(gong)字(zi)鋼的(de)(de)使用(yong)應依(yi)據(ju)設計(ji)圖紙的(de)(de)要求進(jin)行(xing)選用(yong)。 在(zai)結構(gou)設計(ji)中選用(yong)工(gong)(gong)(gong)字(zi)鋼應依(yi)據(ju)其力(li)學(xue)性(xing)(xing)能(neng)(neng)，化學(xue)性(xing)(xing)能(neng)(neng)，可焊(han)性(xing)(xing)能(neng)(neng)，結構(gou)尺寸等選擇合理的(de)(de)工(gong)(gong)(gong)字(zi)鋼進(jin)行(xing)使用(yong)，其優(you)點是軋輥(gun)(gun)軸向(xiang)力(li)小，軸向(xiang)竄動小，不需工(gong)(gong)(gong)作斜(xie)面(mian)，孔型(xing)占用(yong)輥(gun)(gun)身長度小，在(zai)輥(gun)(gun)身長度一(yi)定的(de)(de)條件(jian)下可多(duo)配孔型(xing)。 混合孔型(xing)系統。
根據軋(ya)(ya)機和產品的特點，為(wei)充分發(fa)揮各自系(xi)統(tong)(tong)(tong)的優點，克服缺點，往往采(cai)(cai)用混合孔(kong)型系(xi)統(tong)(tong)(tong)，即兩種以上系(xi)統(tong)(tong)(tong)的組合。如(ru)成品孔(kong)和成品前孔(kong)采(cai)(cai)用直(zhi)腿(tui)(tui)斜軋(ya)(ya)孔(kong)型系(xi)統(tong)(tong)(tong)，其他(ta)孔(kong)型采(cai)(cai)用彎(wan)腿(tui)(tui)斜軋(ya)(ya)系(xi)統(tong)(tong)(tong)；或者粗軋(ya)(ya)孔(kong)采(cai)(cai)用直(zhi)軋(ya)(ya)系(xi)統(tong)(tong)(tong)，后3~4個精軋(ya)(ya)孔(kong)采(cai)(cai)用直(zhi)腿(tui)(tui)斜扎(zha)孔(kong)等。
峻宏貿易公司H型(xing)鋼(gang)(gang)可用(yong)焊(han)接或(huo)軋(ya)(ya)制(zhi)兩(liang)種方法生(sheng)產。焊(han)接H型(xing)鋼(gang)(gang)是(shi)將厚度合適的(de)(de)帶鋼(gang)(gang)裁成合適的(de)(de)寬度，在連續式焊(han)接機(ji)(ji)組上將翼(yi)緣和腹板焊(han)接在一起。焊(han)接H型(xing)鋼(gang)(gang)有金(jin)屬消(xiao)耗(hao)大(da)、不(bu)易保證 產品性能均勻、尺寸規格受(shou)限制(zhi)等缺點。因此，H型(xing)鋼(gang)(gang)以軋(ya)(ya)制(zhi)方法生(sheng)產為主。在現代化的(de)(de)軋(ya)(ya)鋼(gang)(gang)生(sheng)產中，使用(yong)軋(ya)(ya)機(ji)(ji)軋(ya)(ya)制(zhi)H型(xing)鋼(gang)(gang)。
H型鋼(gang)的(de)(de)腹(fu)板在上下(xia)(xia)(xia)水平輥之間進行軋(ya)(ya)(ya)(ya)(ya)制(zhi)，翼緣(yuan) 則(ze)在水平輥側面和立輥之間同時軋(ya)(ya)(ya)(ya)(ya)制(zhi)成(cheng)形。由于(yu)僅(jin)用軋(ya)(ya)(ya)(ya)(ya)機(ji)(ji)(ji)尚不能對(dui)翼緣(yuan)邊(bian)(bian)(bian)端施以(yi)(yi)壓(ya)下(xia)(xia)(xia)，這樣(yang)就需(xu)要(yao)在機(ji)(ji)(ji)架(jia)后設置軋(ya)(ya)(ya)(ya)(ya)邊(bian)(bian)(bian)端機(ji)(ji)(ji)，俗稱軋(ya)(ya)(ya)(ya)(ya)邊(bian)(bian)(bian)機(ji)(ji)(ji)，以(yi)(yi)便對(dui)翼緣(yuan)邊(bian)(bian)(bian)端給予壓(ya)下(xia)(xia)(xia)并控(kong) 制(zhi)翼緣(yuan)寬度。在實際軋(ya)(ya)(ya)(ya)(ya)制(zhi)操作(zuo)中，把這兩座(zuo)機(ji)(ji)(ji)架(jia)作(zuo)為一(yi)組(zu)，使軋(ya)(ya)(ya)(ya)(ya)件往復通(tong)過若干次(ci)(圖2a)，或者是令軋(ya)(ya)(ya)(ya)(ya)件通(tong)過由幾(ji)架(jia)機(ji)(ji)(ji)座(zuo)和一(yi)兩架(jia)軋(ya)(ya)(ya)(ya)(ya)邊(bian)(bian)(bian)端機(ji)(ji)(ji)座(zuo)組(zu)成(cheng)的(de)(de)連軋(ya)(ya)(ya)(ya)(ya)機(ji)(ji)(ji)組(zu)，每道次(ci)施加 一(yi)定的(de)(de)壓(ya)下(xia)(xia)(xia)量，將(jiang)坯料(liao)軋(ya)(ya)(ya)(ya)(ya)成(cheng)所需(xu)規格形狀(zhuang)和尺寸的(de)(de)產品。
在(zai)軋(ya)(ya)(ya)件(jian)的(de)(de)翼緣部位，由于水平(ping)輥(gun)(gun)側面(mian)(mian)與軋(ya)(ya)(ya)件(jian)之間有(you)滑動，軋(ya)(ya)(ya)輥(gun)(gun)的(de)(de)磨損比(bi)較大(da)。為了保證重車后(hou)的(de)(de)軋(ya)(ya)(ya)輥(gun)(gun)能恢復原來(lai)的(de)(de)形(xing)狀(zhuang)， 應使粗軋(ya)(ya)(ya)機(ji)組上下(xia)水平(ping)輥(gun)(gun)的(de)(de)側面(mian)(mian)以及與其(qi)相(xiang)對應的(de)(de)立(li)輥(gun)(gun)表面(mian)(mian)呈(cheng)(cheng)3°～8°的(de)(de)傾角。為修(xiu)正(zheng)成品翼緣的(de)(de)傾角，設置(zhi)成品軋(ya)(ya)(ya)機(ji)，又叫精軋(ya)(ya)(ya)機(ji)，其(qi)水平(ping)輥(gun)(gun)側面(mian)(mian)與水平(ping)輥(gun)(gun)軸線垂直 或(huo)有(you)較小(xiao)的(de)(de)傾斜角，一般不大(da)于20′，立(li)輥(gun)(gun)呈(cheng)(cheng)圓柱狀(zhuang)。
