Lub Rooj vag Valve puas tuaj yeem kho tau?

Thaum lub rooj vag valve muaj kev cuam tshuam los ntawm kev xau lossis kev ua haujlwm ua haujlwm, ntau tus neeg siv thawj zaug nug seb nws puas tuaj yeem kho tsis tau hloov. Cov lus teb nyob ntawm seb hom valve,℃ntawm kev puas tsuaj, thiab kev hloov pauv ntawm cov khoom sab hauv.

Feasibility Kev Txiav Txim ntawm Kev Kho

Noj covresilient rooj vag valvePiv txwv li, yog hais tias nws cov roj hmab lined lub rooj yog torn los yog hnub nyoog (hardness tshaj 80 Shore A), kho feem ntau uneconomical - tus nqi hloov tag nrho valve tsuas yog 60% ntawm cov disassembly thiab kho nqi.

Raufaus rooj vag valve, qhov chaw faus tau yooj yim ua rau electrochemical corrosion ntawm qia thiab valve lub cev. Yog hais tias qhov tob ntawm corrosion pits tshaj 0.5mm, nws raug nquahu kom ncaj qha hloov lub qia lossis tag nrho lub valve. Nyob rau hauv sib piv, lubforged steel rooj vag valvefeatures dense material (grain size>=Grade 7) and a split structure of seat and valve body. Nws qhov nruj tuaj yeem rov qab los ntawm lapping lub rooj zaum valve nrog qhov siab tshaj plaws kev sib tsoo nyiaj pub dawb ntawm 1.2mm.

Common Faults thiab Solutions

Fault 1: Lub rooj vag tsis tuaj yeem kaw tag nrho nrog txuas txuas nruab nrab

Tej yam ua tau: Grooves tsim los ntawm yaig ntawm lub npoo npoo ntawmsolid wedge valve(qhov tob ＞ 0.8mm), los yog txawv teb chaws tso rau hauv qab ntawmtag nrho bore rooj vag valve.

Kev daws:

Disassemble lub valve thiab kho lub sealing nto nrog ib tug tshwj xeeb nto lapping tshuab kom lub roughness Ra tsawg dua los yog sib npaug zos rau 0.4μm; Yog hais tias cov grooves tob dhau lawm, txhim tsa Stellite alloy ua raws li kev ua tiav machining. Rau kev tso tawm txawv teb chaws, ntxiv qhov chaw nres nkoj tshem tawm.

Fault 2: Sab nraud to ntawm lub valve qia

Tej yam ua tau: Kev laus packing los yog longitudinal khawb ntawm qia nto (qhov tob tshaj los yog sib npaug rau 0.2mm).

Kev daws:

Hloov nrog cov graphite packing hloov tau (qhov kub thiab txias: -200℃~ 650 degree), thiab tshem cov qia khawb nrog lub log polishing. Yog hais tias lub qia ncaj sib txawv tshaj 0.15mm / m, ncaj los yog hloov tam sim ntawd.

Cov lus pom zoo

Raws li covValve Kho Technical Guide, 2022, qhov kev txiav txim kho yuav tsum ua raws li lub hauv paus ntsiab lus ntawmkho tus nqi Tsawg dua lossis sib npaug li 60% ntawm tus nqi valve tshiab. Nws raug nquahu kom ntsuas qhov sealing nto hardness (HB Ntau dua lossis sib npaug ntawm 200 yog tsim nyog) thiab qia concentricity thaum txhua tus txij nkawm.

COVALVE muab cov khoom siv rov qab rau cov hlau forged thiab tag nrho lub qhov rooj qhov rooj. Cov khoom siv khaws cia lub cev lub cev qub thaum hloov cov khoom siv sab hauv thiab cov khoom ntim, uas tuaj yeem txuas ntxiv lub neej ntawm cov khoom siv los ntawm 5 ~ 8 xyoo.