我們(men)專注于鋼(gang)筋網片(pian)、絲桿、止水鋼(gang)板銷售批發
我們(men)專注于鋼(gang)筋網片(pian)、絲桿、止水鋼(gang)板銷售批發
SMW工(gong)法樁施(shi)(shi)(shi)工(gong)、開(kai)挖(wa)至標高一(yi)3. lOm、放坡(po)段噴硅施(shi)(shi)(shi)工(gong)及第一(yi)道混凝上(shang)水(shui)平支(zhi)撐(cheng)(cheng)(cheng)施(shi)(shi)(shi)工(gong)、開(kai)挖(wa)至一(yi)5. 30m，按(an)設計要(yao)求預(yu)留(liu)被動(dong)區反壓(ya)上(shang)、底(di)板(ban)鋼(gang)斜支(zhi)撐(cheng)(cheng)(cheng)牛腿施(shi)(shi)(shi)工(gong)、反壓(ya)上(shang)面鋼(gang)斜支(zhi)撐(cheng)(cheng)(cheng)腰梁施(shi)(shi)(shi)工(gong)、鋼(gang)斜支(zhi)撐(cheng)(cheng)(cheng)安(an)裝(zhuang)、反壓(ya)上(shang)挖(wa)除、反壓(ya)上(shang)下(xia)(xia)結構(gou)底(di)板(ban)施(shi)(shi)(shi)工(gong)及地下(xia)(xia)室(shi)結構(gou)施(shi)(shi)(shi)工(gong)、回填(tian)至反壓(ya)上(shang)標高、拆除鋼(gang)斜支(zhi)撐(cheng)(cheng)(cheng)。
絲桿的(de)特點是加(jia)工精(jing)度高，變(bian)形(xing)(xing)要求嚴格，由于加(jia)工工序多(duo)，熱(re)處(chu)理(li)質量和(he)變(bian)形(xing)(xing)很重(zhong)要。生產中(zhong)(zhong)發現(xian)，工件滲(shen)碳淬火后(hou)彎曲(qu)變(bian)形(xing)(xing)嚴重(zhong)，校正困難，熱(re)處(chu)理(li)后(hou)加(jia)工中(zhong)(zhong)亦(yi)出現(xian)較大變(bian)形(xing)(xing)，造成大量產品返修和(he)不(bu)少(shao)工件報(bao)廢。為了(le)保障其機構(gou)的(de)性(xing)能，又方(fang)便用戶進行二(er)次加(jia)工，一般只對(dui)螺紋部分(fen)進行淬火熱(re)處(chu)理(li)，其余部位仍可進行機械加(jia)工。
