Murhun Roller don Magance Roba: Nasihu Kan Kula da Zafin Jiki

By Mike Chen, Daraktan Samarwa | Shekaru 12+ a Masana'antar Roba |LinkedIn

Muhimman Abubuwan Da Ake Ɗauka

• Kula da zafin jiki na PID yana kiyaye zafin tanda mai narkewa a cikin ±1-2°C na wurin da aka saita, wanda yake da mahimmanci don daidaiton yawan haɗin gwiwa a duk sassan da ke cikin rukuni.
• Tandunan birgima masu ganga mai siffar octagonal suna samun daidaiton zafin jiki mafi kyau fiye da tanda mai tsaye saboda ci gaba da juyawa yana fallasa dukkan saman sassan ga iska mai zafi da ke zagayawa.
• Mai sarrafa PID na Omron mai ƙarfin 4-20 mA SSR yana hana yawan dumama ta hanyar daidaita wutar lantarki akai-akai maimakon kunna da kashe na'urar dumama.
• Tsarin kariya mai zafi sau biyu a cikin tanda na zamani mai naɗewa yana kashe na'urar hita ta atomatik idan babban mai sarrafa ta ya gaza, wanda ke hana gobara da lalacewar samfur.

Murhun roba don warkar da roba yana da manufa daban da ta farko ta matsewar roba. Rufin roba na biyu - wanda kuma ake kira bayan warkarwa - yana kammala tsarin haɗin gwiwa wanda ya fara a cikin matsewa ko allurar. Saboda halayen zahiri na mahaɗan roba suna ci gaba da haɓaka yayin rufin roba na biyu, daidaitaccen sarrafa zafin jiki a cikin tanda mai warkarwa yana shafar ingancin samfurin ƙarshe kai tsaye.

Wannan labarin ya ƙunshi tsarin kula da zafin jiki da ake amfani da shi a cikin tanda mai naɗawa don warkar da roba, shawarwari masu amfani don kiyaye dumama iri ɗaya, da kuma yadda ake inganta sigogin tsari don mahaɗan roba daban-daban da girman rukuni.

Dalilin da yasa Kula da Zafin Jiki a cikin Murhun Gyaran Roba ke Shafar Ingancin Samfura

Gyaran roba yana bin alaƙar lokaci da zafin jiki da aka ƙayyade ta hanyar lanƙwasa maganin mahaɗin. Ga kowace ƙaruwar zafin jiki na digiri 10 a cikin digiri 10 na Celsius, ƙimar amsawar tana ninka kusan ninki biyu. Bambancin zafin jiki na digiri 5 kawai a cikin tarin sassa na iya haifar da bambance-bambancen da za a iya aunawa a cikin ƙarfin tauri, tsawaitawa a lokacin karyewa, da kuma matsi da aka saita a cikin gudu ɗaya na samarwa.

KowaceASTM D573kumaISO 188Ma'aunin tsufar zafi na roba, alaƙar da ke tsakanin zafin jiki da canjin hali ana iya hasashenta idan aka sarrafa zafin daidai. Kayayyakin da aka warke a ƙasan kewayon ƙayyadaddun bayanai na iya samun haɗin gwiwa mara cikakke, wanda ke haifar da ƙananan modulus da mafi girman saitin matsi. Kayayyakin da ke babban ƙarshen na iya fuskantar warkewa fiye da kima, suna zama masu rauni tare da raguwar tsayi. Tanda mai birgima don warkar da roba tare da daidaitaccen sarrafa zafin jiki yana kawar da wannan bambancin tsari-zuwa-da ...

A cikin gwajin masana'antarmu a cikin fiye da rukunin vulcanization na sakandare 200 ta amfani da tanda mai juyawa ta XCJ-K600, mun lura cewa sassan da aka warke da zafin jiki mai sarrafawa na PID a cikin ±1.5°C na wurin da aka saita sun nuna ƙarancin bambanci a cikin taurin Shore A da kashi 23% idan aka kwatanta da sassan da aka warke a cikin tanda tare da canjin zafin jiki na ±5°C.

Tsarin Kula da Zafin Jiki a cikin Tanda Mai Naɗi don Magance Roba

Tandunan naɗa na zamani don gyaran roba sun haɗa da tsarin sarrafawa guda uku waɗanda ke aiki tare don kiyaye yanayin sarrafawa mai daidaito.

Mai sarrafa PID tare da fitowar SSR

Mai sarrafa zafin jiki na Omron PID a cikin tanda mai juyawa na XCJ-K600 da XCJ-K900 yana amfani da tsarin daidaitawa mai daidaituwa don ƙididdige ƙarfin dumama da ake buƙata akai-akai. Siginar fitarwa ta 4-20 mA tana tuƙa relay mai ƙarfi (SSR) wanda ke daidaita ƙarfin dumama akai-akai maimakon kunna da kashe na'urar dumama. Wannan yanayin sarrafawa mai ci gaba yana kawar da overshoot da undershoot na zafin da ke faruwa tare da na'urorin dumama masu sauƙin kunnawa. Sakamakon shine yanayin zafin ɗaki mai ɗorewa tare da daidaiton ±1-2°C a wuraren da aka saita tsakanin zafin ɗaki da 260°C.

Tsarin zagayawa na iska mai zafi

Motar dogon shaft mai zafi mai ƙarfi da ke tuƙa fankar turbine tana samar da iska mai ƙarfin CBM/h 3000. Saboda iskar zafi tana ci gaba da tafiya ta cikin ganga mai tsawon octagonal da kuma sassan roba masu jujjuyawa, kowane saman ɓangaren yana karɓar irin wannan yanayin zafi. Wannan zagayawar jini yana hana samuwar wurare masu zafi kusa da masu dumama da wuraren sanyi kusa da ƙofa ko kusurwoyi. Rufe auduga mai girman mm 100 yana kiyaye zafin bangon waje ƙasa da 35°C yayin aiki na 200°C, yana rage asarar zafi da inganta yanayin zafin jiki.

Juya ganga mai tsawon octagon don fallasa zafi iri ɗaya

Tsarin ganga mai tsawon ƙafa takwas yana da amfani biyu: yana juya sassan roba ta cikin ruwan zafi, kuma bangon ciki mai fuskoki yana ƙirƙirar kusurwoyi daban-daban na faɗuwa waɗanda ke hana sassa haɗuwa tare. Tarin sassa masu tsayawa suna riƙe zafi a tsakiya, yana haifar da bambance-bambancen saurin warkewa tsakanin sassan waje da na ciki. Gangar da ke juyawa tana kawar da wannan rarrabuwa, kuma injin naɗa (0.75 kW) yana kiyaye saurin juyawa daidai ba tare da la'akari da nauyin rukuni ba.

Nasihu Kan Kula da Zafin Jiki Don Aikin Murhun Gyaran Roba

1. Saita sigogin PID bisa ga yawan rukuni.Rukunin kilogiram 50 yana shan zafi fiye da rukunin kilogiram 15 a lokacin ɗumamawa na farko. Daidaita madaurin daidai gwargwado da lokacin haɗin gwiwa akan mai sarrafa Omron PID don la'akari da bambancin yawan zafin jiki. Fara da sigogin da masana'anta suka tsara kuma gyara daidai gwargwadon lokacin dawo da zafin jiki bayan lodawa.
2. A kunna tanda mai birgima har zuwa inda aka saita kafin a ɗora.Sanya sassan roba a cikin tanda wanda bai kai ga daidaiton zafi ba yana sa zafin ɗakin ya faɗi ƙasa da wurin da aka saita. Mai sarrafa PID zai amsa, amma lokacin murmurewa ya dogara da ƙarfin hita (10.5 kW a cikin XCJ-K600) da nauyin nauyin sanyi. A bar mintuna 15-20 na daidaitawa bayan mai sarrafawa ya nuna cewa an isa wurin da aka saita.
3. Kula da dawo da zafin jiki bayan lodawa.Lokacin sanyi mafi sanyi a cikin zagayowar warkewa yana faruwa ne bayan mintuna 3-5 bayan loda sabon rukuni. Rage zafin jiki bai kamata ya wuce 10°C ga XCJ-K600 tare da nauyin kilogiram 15-20 ba. Idan digowar ta wuce 15°C, rage girman rukunin ko ƙara lokacin da aka riga aka kunna.
4. Yi amfani da aikin mai ƙidayar lokaci don daidaita tsarin zagayowar.Na'urar ƙidayar lokaci ta awa 0-99.99 tare da tashar dumama ta atomatik da ƙararrawa mai ji tana tabbatar da cewa kowace ƙungiya tana karɓar tsawon lokacin da aka ƙayyade. Kada ku dogara da lokacin da aka ƙayyade da hannu, domin bambancin aiki yana haifar da bambancin aiki mara amfani.
5. Daidaita na'urar sarrafa PID kowace shekara.Guduwar na'urar firikwensin zafin jiki akan lokaci yana shafar daidaiton mai sarrafawa. Ya kamata a tabbatar da shigarwar mai sarrafa Omron akan thermocouple mai ma'auni aƙalla sau ɗaya a shekara. Sake daidaita idan karatun ya bambanta da fiye da 2°C daga ma'aunin a yanayin zafin aiki na yau da kullun.
6. Tabbatar da tsarin kariya daga yawan zafin jiki a kowane mako.Kariyar zafi sau biyu a cikin tanda mai birgima ta XCJ-K600 da XCJ-K900 ta haɗa da na'urori masu auna zafin jiki masu zaman kansu waɗanda ke kashe na'urar hita idan babban mai sarrafa ta ya gaza. Gwada wannan tsarin ta hanyar ɗaga wurin saita iyaka mai tsayi sama da zafin aiki da kuma tabbatar da cewa na'urar hita ta katse.

Shawarar Yanayin Tanda Mai Waraka don Abubuwan da Aka Fi So a Rubuce-rubuce

Zafin jiki bisa ga jagororin haɗa sinadarai na gabaɗaya. Ya kamata a tabbatar da ainihin sigogi tare da mai samar da sinadarai kuma a tabbatar da su ta hanyar gwajin kayan aikin injiniya bisa ga ASTM D412 da ASTM D395.

Matsalolin Kula da Zafin Jiki na Kullum a Tandunan Gyaran Roba

Ana iya gano yawancin matsalolin kula da zafin jiki ta hanyar sa ido akai-akai kan allon tsarin kula da Delta, wanda ke ba da bayanai game da yanayin aiki na ainihin lokaci.

Zaɓar Murhun Rola Mai Dacewa Don Gyaran Roba

Tandunan na'urorin XCJ-K600 da XCJ-K900 daga Xiamen Xingchangjia suna ba da juzu'i biyu na sarrafawa don ma'aunin samarwa daban-daban. XCJ-K600 yana da ɗaki mai lita 600 tare da girman 1300 mm (W) x 1600 mm (H) x 1100 mm (T), wanda ya dace da ƙananan samarwa zuwa matsakaici. XCJ-K900 yana ba da lita 900 a 1300 mm (W) x 1600 mm (H) x 1300 mm (T), wanda aka tsara don ayyukan warkarwa mai girma.

Dukansu samfuran suna da tsarin sarrafa zafin jiki iri ɗaya — mai sarrafa Omron PID, na'urar hita mai ƙarfin 10.5 kW, fanka mai zagayawa na CBM/h 3000, da kuma kariya mai yawa daga zafin jiki. Tsarin ciki da waje na bakin ƙarfe 304 mai kauri bango mai girman mm 1.5 yana hana tsatsa tsawon shekaru na aiki. Yanayin zafin da za a iya daidaitawa daga zafin ɗaki zuwa 280°C ya ƙunshi duk buƙatun vulcanization na sakandare na NBR, EPDM, FKM, silicone, da HNBR mahadi.

Kammalawa: Zafin Jiki Mai Daidaito Yana Nufin Ingancin Roba Mai Daidaito

Kula da zafin jiki shine abu mafi mahimmanci a cikin sake fasalin vulcanization na biyu. Murhun roba don warkar da roba tare da sarrafa PID, ingantaccen zagayawa cikin iska mai zafi, da juyawar ganga mai kusurwa huɗu yana ba da yanayin dumama iri ɗaya da ake buƙata don daidaiton yawan haɗin gwiwa a duk sassan kowane rukuni. Masu sarrafa Omron PID tare da fitarwa na 4-20 mA SSR, tare da zagayawa cikin iska 3000 CBM/h da rufin 100 mm, suna ba da kwanciyar hankali na zafin da ake buƙata don bin ƙa'idodin ISO 188 da ASTM D573.

Masu aiki waɗanda ke bin tsarin kula da zafin jiki na yau da kullun - kafin dumamawa, sa ido kan murmurewa, tabbatar da daidaito, da kuma kula da tsarin aminci - suna samun ƙarancin bambanci a cikin halayen roba da aka warke da kuma yawan amfanin da ake samarwa.