Cibiyar Samfura

Ana yiwa ɓangaren tace mai na'ura mai ɗorewa akan samfurin samfur ko farantin suna tare da daidaitaccen tacewa, ba cikakkiyar daidaiton tacewa ba. Ƙimar β kawai da aka auna ta gwajin zai iya wakiltar ƙarfin tacewa na tacewa. Na'ura mai aiki da karfin ruwa tace kashi ya kamata kuma hadu da bukatun na matsa lamba (jimlar matsa lamba bambance-bambancen na babban matsa lamba tace kasa da 0.1PMa, da kuma jimlar matsa lamba na mai dawo da tace kasa da 0.05MPa) don tabbatar da ingantawa na. kwarara da tace element rai. Don haka ta yaya za mu zaɓi matatun mai na hydraulic daidai? Editan hydraulic Dalan ya gaya muku cewa kuna buƙatar yin la'akari da abubuwa biyar masu zuwa.

1. Tace daidaito na hydraulic man tace kashi

Da farko, ƙayyade matakin tsabta na tabo bisa ga bukatun tsarin hydraulic, sa'an nan kuma zaɓi madaidaicin tacewa na tace mai bisa ga matakin tsabta bisa ga tebur alama. Mafi yawan abubuwan tace mai na hydraulic mai amfani a cikin injinan gini yana da ƙimar tacewa mara kyau na 10μm. Tsabtace mai na ruwa (ISO4406) Daidaitaccen tacewa mara kyau na nau'in tacewa (μm) kewayon aikace-aikacen 13/103 bawul ɗin hydraulic servo (tare da nau'in tacewa 3μm) 16/135 bawul ɗin daidaitaccen bawul (tare da kashi 5μm tace) 18/1510 Babban abubuwan haɗin ruwa (> 10MPa) ) (tare da 10μm tace kashi) 19/1620 janar na'ura mai aiki da karfin ruwa gyara (<10MPa) (tare da 20μm tace kashi)

Mai tace mai

Tunda daidaiton tacewa na ƙididdigewa ba zai iya nuna ainihin ƙarfin tacewa na ɓangaren tacewa ba, diamita mafi girman nau'in sikeli mai ƙarfi wanda tacewa zai iya wucewa ƙarƙashin ƙayyadadden yanayin gwaji ana amfani dashi azaman cikakkiyar daidaiton tacewa kai tsaye don nuna farkon tacewa. sabon shigar tace kashi. Mafi mahimmancin ma'auni don kimanta ƙarfin abubuwan tace mai na hydraulic shine ƙimar β da aka ƙaddara bisa ga ISO4572-1981E (gwajin Multi-pass), wato, man da aka haɗe tare da daidaitaccen foda na gwaji yana yaduwa ta hanyar tace mai sau da yawa. , kuma mashigar mai da magudanar man suna gefe biyu na tace mai. rabon adadin barbashi.

2. Halayen kwarara

Gudun ruwa da matsa lamba na nau'in tacewa da ke wucewa ta cikin mai sune mahimman sigogi na halayen kwarara. Ya kamata a gudanar da gwajin halayyar kwarara bisa ga ma'aunin ISO3968-91 don zana yanayin juzu'i mai saurin kwarara. Ƙarƙashin ƙimar samar da man fetur, jimlar matsa lamba (jimillar digon matsi na mahalli mai tacewa da matsi na ɓangaren tacewa) gabaɗaya ya kamata ya kasance ƙasa da 0.2MPa. Matsakaicin kwarara: 400lt/min Gwajin dankon mai: 60to20Cst Mafi ƙarancin kwararar Turbine: 0℃ 60lt/min Matsakaicin kwararar Turbine: 0℃ 400lt/min

3. Karfin tacewa

Gwajin tasirin fashewar za a gudanar da shi daidai da ISO 2941-83. Bambancin matsin lamba da ke faɗuwa sosai lokacin da abin tacewa ya lalace ya kamata ya fi ƙayyadaddun ƙimar.

4. Gudun gajiya halaye

Ya kamata ya dace da daidaitaccen gwajin gajiya na ISO 3724-90. Abubuwan tacewa dole ne a gwada gajiya don zagayowar 100,000.

5. Gwaji don daidaitawa na man hydraulic

Ya kamata a gudanar da gwajin jurewar matsin lamba bisa ga ka'idar ISO2943-83 don tabbatar da dacewa da kayan tacewa tare da mai.

Tacewar rabo b rabo yana nufin rabon adadin barbashi mafi girma fiye da girman da aka bayar a cikin ruwa kafin tacewa zuwa adadin barbashi mafi girma fiye da girman da aka ba a cikin ruwan bayan tacewa. Nb=yawan barbashi kafin tacewa Na= adadin barbashi bayan tacewa X= girman barbashi.