By strictly controlling concrete slump and second vibration technique, settlement amount is reduced, and by mechanical troweling technique.

大面積厚地坪采用軟縫,可一次澆筑不留施工縫;使用內(nèi)燃式振動(dòng)梁找平混凝土,通過埋設(shè)振動(dòng)梁軌道控制地坪標(biāo)高表面平整度;接槎處設(shè)凹槽控制平整度和表面質(zhì)量;采用嚴(yán)格控制坍落度和二次振搗工藝,控制和減少沉陷量;采用機(jī)械抹光工藝,提高抹面速度及質(zhì)量;及時(shí)切割誘導(dǎo)縫,減少了裂縫發(fā)生的可能性。

This article describes the structural feature of the disc type rotor spider of hydrogenerator,and explains it's assembling and the technology of welding and welding distortion controlling.

介紹了水輪發(fā)電機(jī)圓盤式轉(zhuǎn)子支架的結(jié)構(gòu)特點(diǎn),闡述了圓盤式轉(zhuǎn)子支架的組裝和焊接工藝及控制焊接變形的工藝措施。

steel with 35CrMo cast steel at disk of hammer mill made in Romania was welded.

對(duì)進(jìn)口錘式破碎機(jī)圓盤采用了國(guó)產(chǎn)材料——盤芯 35 Cr Mo鑄鋼、盤片 4 5鋼替代進(jìn)行焊接加工 ,在焊接性分析的基礎(chǔ)上 ,采取焊前預(yù)熱、低氫焊接和焊后熱處理等措施 ,成功地實(shí)現(xiàn)了錘式破碎機(jī)圓盤 4 5鋼盤片與 35 Cr Mo合金鑄鋼盤芯之間的焊接 ,圓盤已運(yùn)行 1年多 ,使用效果良好。