一、熱軋工字鋼和焊接工字鋼的區別在哪里
1、熱軋工字鋼就是經過熱軋工藝處理的,具有工字形截面的實心長條鋼材。主要用(yong)在(zai)大(da)跨度平(ping)面(mian)、拱形屋頂鋼(gang)梁(liang)及行(xing)車、大(da)型(xing)施工腳手架等。熱軋(ya)工字鋼(gang)因經過高溫加熱軋(ya)制而成,所以強度不是很高,但塑形和(he)可焊性好,自由扭轉剛度高,在(zai)日常生活中(zhong)更(geng)為(wei)常見。
2、焊接工字鋼的(de)的(de)生產過程就是將厚度適(shi)中的(de)帶鋼截成需要的(de)寬度,再(zai)將它們在(zai)焊接機(ji)上將邊部和腰部焊接在(zai)一起(qi)。
3、兩者最大的(de)區別就是工(gong)藝不同,熱(re)(re)軋(ya)(ya)(ya)是一(yi)種(zhong)高效的(de)金(jin)(jin)(jin)屬(shu)(shu)(shu)加工(gong)方(fang)法,它(ta)可(ke)以(yi)(yi)大幅度(du)(du)提高金(jin)(jin)(jin)屬(shu)(shu)(shu)材(cai)(cai)料(liao)(liao)的(de)強度(du)(du)和硬度(du)(du),同時還能改善其塑(su)性(xing)和韌(ren)性(xing)。熱(re)(re)軋(ya)(ya)(ya)的(de)過(guo)程中,金(jin)(jin)(jin)屬(shu)(shu)(shu)材(cai)(cai)料(liao)(liao)會經歷多次輥軋(ya)(ya)(ya),從(cong)(cong)而逐漸形(xing)成所需的(de)形(xing)狀(zhuang)和尺寸。熱(re)(re)軋(ya)(ya)(ya)還可(ke)以(yi)(yi)使(shi)金(jin)(jin)(jin)屬(shu)(shu)(shu)材(cai)(cai)料(liao)(liao)表面形(xing)成一(yi)層氧化(hua)皮(pi),這(zhe)層氧化(hua)皮(pi)可(ke)以(yi)(yi)保護金(jin)(jin)(jin)屬(shu)(shu)(shu)材(cai)(cai)料(liao)(liao)不受腐(fu)蝕和氧化(hua)的(de)影(ying)響。與熱(re)(re)軋(ya)(ya)(ya)相比,焊(han)接是一(yi)種(zhong)更(geng)為(wei)靈活的(de)金(jin)(jin)(jin)屬(shu)(shu)(shu)加工(gong)方(fang)法。焊(han)接可(ke)以(yi)(yi)將不同種(zhong)類的(de)金(jin)(jin)(jin)屬(shu)(shu)(shu)材(cai)(cai)料(liao)(liao)連接在一(yi)起,從(cong)(cong)而形(xing)成更(geng)為(wei)復雜的(de)結構。焊(han)接還可(ke)以(yi)(yi)在不破壞金(jin)(jin)(jin)屬(shu)(shu)(shu)材(cai)(cai)料(liao)(liao)的(de)情況(kuang)下(xia)進行修補和加固,從(cong)(cong)而延長其使(shi)用壽(shou)命。焊(han)接的(de)過(guo)程中,需要使(shi)用一(yi)定的(de)熱(re)(re)源和壓力,以(yi)(yi)使(shi)金(jin)(jin)(jin)屬(shu)(shu)(shu)材(cai)(cai)料(liao)(liao)達到(dao)熔點并(bing)連接在一(yi)起。
二、熱軋工字鋼和焊接工字鋼哪個好
前文已(yi)經(jing)簡單了(le)解(jie)到熱(re)軋(ya)工字鋼(gang)(gang)和(he)(he)焊(han)接工字鋼(gang)(gang)主要區別在于工藝,那么熱(re)軋(ya)工字鋼(gang)(gang)和(he)(he)焊(han)接工字鋼(gang)(gang)哪個好(hao)呢?
在(zai)規格和材(cai)料(liao)相(xiang)同(tong)的(de)(de)情(qing)況下(xia)(xia)(xia),熱(re)(re)(re)軋(ya)(ya)工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)可以代替焊(han)接工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang),而且前者(zhe)(zhe)的(de)(de)質(zhi)量優(you)于后(hou)者(zhe)(zhe)。一般情(qing)況下(xia)(xia)(xia),在(zai)結構設計中,多高層建筑(zhu)宜采(cai)用(yong)(yong)熱(re)(re)(re)軋(ya)(ya)工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang),門式剛架結構的(de)(de)輕(qing)鋼(gang)(gang)(gang)廠房宜采(cai)用(yong)(yong)焊(han)接變截面工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)。鋼(gang)(gang)(gang)材(cai)消(xiao)耗(hao)指標較好,但工(gong)(gong)(gong)(gong)程造價并沒有節(jie)省(sheng)多少,原因(yin)是熱(re)(re)(re)軋(ya)(ya)工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)加工(gong)(gong)(gong)(gong)量小,工(gong)(gong)(gong)(gong)期略短。如果計算綜合經濟(ji)效(xiao)益(包括項目(mu)投入使用(yong)(yong)后(hou)的(de)(de)項目(mu)),在(zai)工(gong)(gong)(gong)(gong)期起決定性作用(yong)(yong)的(de)(de)情(qing)況下(xia)(xia)(xia),可選擇熱(re)(re)(re)軋(ya)(ya)鋼(gang)(gang)(gang)材(cai)。工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang),但是當工(gong)(gong)(gong)(gong)期要求不嚴格或一些形象工(gong)(gong)(gong)(gong)程時,可以根據節(jie)約資(zi)源的(de)(de)原則(ze)選用(yong)(yong)焊(han)接工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)。