不銹鋼閘閥維修,是不銹鋼閥門維修中的一個(gè)常見種類,江陰市歐雷斯閥門維修廠在多年的不銹鋼閘閥維修中,常見的損壞情況有:閥瓣閥座拉傷、閥瓣閥座沖刷、閥瓣閥座腐蝕麻點(diǎn),閥桿填料部位腐蝕;導(dǎo)致閥門內(nèi)密封泄露及閥門開關(guān)不靈活,以下不銹鋼閘閥維修案例,是使用在有腐蝕的化工原料上的不銹鋼閘閥,本批閘閥同時(shí)出現(xiàn)了:閥瓣閥座拉傷、閥瓣閥座沖刷、閥瓣閥座腐蝕麻點(diǎn)這類損壞,閥門外表被覆蓋了一層油漆;本批閥門材質(zhì)為304,我單位針對(duì)這個(gè)情況,對(duì)閥門擬訂了維修重點(diǎn):
1 閥門外表除油漆
2 閥門內(nèi)部件及閥體,閥桿去除雜質(zhì),恢復(fù)本體材料顏色,便于焊接
3 對(duì)局部損壞部位進(jìn)行堆焊,對(duì)大面積損壞閥瓣閥座進(jìn)行整面堆焊
4 用歐雷斯OLS-TMX400型臺(tái)式磨削機(jī),對(duì)焊接層進(jìn)行磨削留余量0.1-0.5mm
5 歐雷斯OLS-TMX400型臺(tái)式研磨機(jī),對(duì)磨削好的閥瓣閥座進(jìn)行粗、中、細(xì)研磨
其他細(xì)節(jié)不盡細(xì)說,以下是我公司對(duì)不銹鋼閘閥維修的效果比較圖片,本批閥門氣密試驗(yàn)1.6Mpa達(dá)到零泄露
Stainless steel gate valve repair is a common kind of stainless steel valve repair, stainless steel gate valve repair common damage: disc seat strain, disc seat, disc seat corrosion pitting, corrosion stem packing parts; Results in a sealing in the valve leakage and the valve switch is not flexible, the stainless steel gate valve repair case, is used in chemical raw materials of corrosion were stainless steel gate valve, this batch of gate valves also appeared: the disc seat strain, disc seat washout, disc seat corrosion pitting such damage, the valve appearance are covered with a layer of paint; This valve material is 304, my unit according to the situation, the valve to formulate the maintenance key: 1 body appearance in addition to paint 2 items within the valve and valve, the valve stem to remove impurities, restoring ontology material color, facilitate welding 3 surfacing welding was carried out on the local damage, finishing welding was carried out on the large area of damage to the disc seat 4 with the OLS - TMX400 desktop grinding machine, grinding leave allowance for welding layer of 0.1-0.5 mm 5 o les OLS - TMX400 bench grinder, good grinding disc seat for coarse, medium and fine grinding Other details not in detail, the following is my company the maintenance effect comparing pictures of stainless steel gate valve, this valve air test 1.6 Mpa to achieve zero leakage