工字鋼的(de)規格是用腰寬的(de)厘米(mi)值來表示(shi)的(de)，如(ru)10號工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)，其腰寬為(wei)10cm。工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)的(de)種類有(you)熱軋(ya)普通(tong)(tong)工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)、輕型(xing)工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)和寬平行腿工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)（H型(xing)鋼(gang)(gang)(gang)）。我國熱軋(ya)普通(tong)(tong)工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)的(de)腰寬為(wei)100～630mm，表示(shi)為(wei)No.10～No.63，腿內側壁斜度為(wei)1：6。軋(ya)制工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)的(de)孔(kong)型(xing)系統(tong)有(you)直軋(ya)孔(kong)型(xing)系統(tong)、斜軋(ya)孔(kong)型(xing)系統(tong)和混合孔(kong)型(xing)系統(tong)。此外，工(gong)(gong)(gong)(gong)字(zi)鋼(gang)(gang)(gang)還(huan)可以采用特殊軋(ya)法。

（1）直軋(ya)孔(kong)(kong)型系(xi)統(tong)。直軋(ya)孔(kong)(kong)型系(xi)統(tong)是指工字鋼孔(kong)(kong)型的兩個開口腿同時(shi)處(chu)于軋(ya)輥軸線的同一(yi)側，腰與軋(ya)輥軸線平行的孔(kong)(kong)型系(xi)統(tong)。

其優點是軋輥軸向(xiang)力小(xiao)，軸向(xiang)竄動小(xiao)，不需(xu)工作斜面，孔型(xing)(xing)占(zhan)用輥身長度(du)小(xiao)，在(zai)輥身長度(du)一定的條件下可多配孔型(xing)(xing)。

（2）斜軋孔(kong)型系統。這種孔(kong)型系統是指工字鋼(gang)孔(kong)型的兩個開口腿不同(tong)(tong)時(shi)處于腰部的同(tong)(tong)一側，腰與水(shui)平軸線有一夾角。

（3）混合(he)孔(kong)型系(xi)(xi)(xi)統(tong)。根(gen)據(ju)軋(ya)機(ji)和產品(pin)的(de)特點，為充分發揮各自系(xi)(xi)(xi)統(tong)的(de)優點，克服缺(que)點，往往采用(yong)混合(he)孔(kong)型系(xi)(xi)(xi)統(tong)，即兩(liang)種(zhong)以上系(xi)(xi)(xi)統(tong)的(de)組合(he)。如成品(pin)孔(kong)和成品(pin)前孔(kong)采用(yong)直(zhi)(zhi)(zhi)腿斜(xie)軋(ya)孔(kong)型系(xi)(xi)(xi)統(tong)，其他孔(kong)型采用(yong)彎腿斜(xie)軋(ya)系(xi)(xi)(xi)統(tong)；或者(zhe)粗軋(ya)孔(kong)采用(yong)直(zhi)(zhi)(zhi)軋(ya)系(xi)(xi)(xi)統(tong)，后3～4個精(jing)軋(ya)孔(kong)采用(yong)直(zhi)(zhi)(zhi)腿斜(xie)扎孔(kong)等。

（4）特殊軋法。由于某種原因采用通常的軋制方法難以軋出要求的工字鋼時，可采用特殊軋法，充分利用不均勻變形和孔型設計的技巧。例如，當鋼坯斷面較窄而要求軋制較寬的工字鋼時，可(ke)采用波(bo)浪(lang)式軋法；又如當坯料較寬而要求軋制較小號工字鋼時，可(ke)采用負(fu)寬展軋制等(deng)。

以上就(jiu)是工字鋼孔(kong)型設計的幾大常見孔(kong)型的介紹，如有需要，歡(huan)迎咨詢惠(hui)顧！！！