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。主要用在大(da)跨度(du)平面、拱形(xing)屋頂鋼梁及行(xing)車、大(da)型施工(gong)腳手架等(deng)。熱(re)軋(ya)工(gong)字鋼因經過(guo)高溫加熱(re)軋(ya)制而成,所以強度(du)不是很高,但(dan)塑形(xing)和(he)可焊性好,自由扭轉剛度(du)高,在日常生活中(zhong)更為常見。
2、焊接工字鋼的(de)的(de)生產過程(cheng)就(jiu)是(shi)將(jiang)厚度適(shi)中的(de)帶鋼截成(cheng)需要的(de)寬度,再(zai)將(jiang)它們(men)在(zai)焊接機上將(jiang)邊部和腰部焊接在(zai)一起。
3、兩(liang)者最大的區別就(jiu)是工藝不同,熱(re)軋(ya)是一(yi)(yi)種(zhong)高效的金(jin)(jin)屬(shu)(shu)(shu)(shu)加(jia)工方法(fa),它可(ke)以(yi)(yi)(yi)大幅度(du)提高金(jin)(jin)屬(shu)(shu)(shu)(shu)材(cai)(cai)料(liao)的強度(du)和(he)硬(ying)度(du),同時還能改善其塑性(xing)和(he)韌(ren)性(xing)。熱(re)軋(ya)的過(guo)程(cheng)中(zhong),金(jin)(jin)屬(shu)(shu)(shu)(shu)材(cai)(cai)料(liao)會經歷多次輥軋(ya),從(cong)而(er)逐漸形成所(suo)需(xu)的形狀和(he)尺寸。熱(re)軋(ya)還可(ke)以(yi)(yi)(yi)使(shi)金(jin)(jin)屬(shu)(shu)(shu)(shu)材(cai)(cai)料(liao)表面形成一(yi)(yi)層(ceng)氧化皮,這(zhe)層(ceng)氧化皮可(ke)以(yi)(yi)(yi)保護(hu)金(jin)(jin)屬(shu)(shu)(shu)(shu)材(cai)(cai)料(liao)不受腐蝕和(he)氧化的影響。與熱(re)軋(ya)相比(bi),焊接是一(yi)(yi)種(zhong)更(geng)為靈活的金(jin)(jin)屬(shu)(shu)(shu)(shu)加(jia)工方法(fa)。焊接可(ke)以(yi)(yi)(yi)將不同種(zhong)類的金(jin)(jin)屬(shu)(shu)(shu)(shu)材(cai)(cai)料(liao)連(lian)接在一(yi)(yi)起,從(cong)而(er)形成更(geng)為復(fu)雜的結構。焊接還可(ke)以(yi)(yi)(yi)在不破壞金(jin)(jin)屬(shu)(shu)(shu)(shu)材(cai)(cai)料(liao)的情況下進行(xing)修補和(he)加(jia)固,從(cong)而(er)延長其使(shi)用壽命。焊接的過(guo)程(cheng)中(zhong),需(xu)要使(shi)用一(yi)(yi)定(ding)的熱(re)源(yuan)和(he)壓力,以(yi)(yi)(yi)使(shi)金(jin)(jin)屬(shu)(shu)(shu)(shu)材(cai)(cai)料(liao)達到熔點并連(lian)接在一(yi)(yi)起。
二、熱軋工字鋼和焊接工字鋼哪個好
前(qian)文已經簡單了解到熱軋工(gong)字鋼和焊接工(gong)字鋼主要區(qu)別在于工(gong)藝(yi),那么熱軋工(gong)字鋼和焊接工(gong)字鋼哪個好呢(ni)?
在規(gui)格(ge)和材料相同(tong)的情(qing)況(kuang)下,熱(re)軋工(gong)(gong)(gong)字(zi)鋼(gang)(gang)可(ke)以代替(ti)焊(han)(han)接(jie)工(gong)(gong)(gong)字(zi)鋼(gang)(gang),而且前者(zhe)的質量優于后者(zhe)。一般情(qing)況(kuang)下,在結(jie)構設計中,多高(gao)層建筑宜采(cai)用(yong)熱(re)軋工(gong)(gong)(gong)字(zi)鋼(gang)(gang),門式剛架結(jie)構的輕鋼(gang)(gang)廠(chang)房(fang)宜采(cai)用(yong)焊(han)(han)接(jie)變截面工(gong)(gong)(gong)字(zi)鋼(gang)(gang)。鋼(gang)(gang)材消耗指(zhi)標較好(hao),但工(gong)(gong)(gong)程(cheng)造價并沒有節省多少,原(yuan)因(yin)是熱(re)軋工(gong)(gong)(gong)字(zi)鋼(gang)(gang)加工(gong)(gong)(gong)量小,工(gong)(gong)(gong)期略短。如果計算綜(zong)合經濟效益(包括項(xiang)目(mu)投入使用(yong)后的項(xiang)目(mu)),在工(gong)(gong)(gong)期起決定性(xing)作用(yong)的情(qing)況(kuang)下,可(ke)選(xuan)擇熱(re)軋鋼(gang)(gang)材。工(gong)(gong)(gong)字(zi)鋼(gang)(gang),但是當工(gong)(gong)(gong)期要求不嚴(yan)格(ge)或一些形象工(gong)(gong)(gong)程(cheng)時,可(ke)以根據節約資源的原(yuan)則選(xuan)用(yong)焊(han)(han)接(jie)工(gong)(gong)(gong)字(zi)鋼(gang)(gang)。