{"id":16528,"date":"2026-10-23T06:47:47","date_gmt":"2026-10-23T06:47:47","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=16528"},"modified":"2026-10-23T06:47:50","modified_gmt":"2026-10-23T06:47:50","slug":"magnetic-particle-testing-vs-penetrant-testing","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/uz\/posts\/magnetic-particle-testing-vs-penetrant-testing\/","title":{"rendered":"Magnit zarrachalarni sinash va penetrant sinovi: Kranni payvandlash tekshiruvi uchun to&#39;g&#39;ri usulni tanlash"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Mundarija<\/p><nav><ul><li><a href=\"#1-what-do-magnetic-particle-testing-and-penetrant-testing-detect\">1. Magnit zarrachalarni sinash va penetrantlarni sinash nimani aniqlaydi?<\/a><\/li><li><a href=\"#2-principles-magnetic-flux-leakage-vs-capillary-action\">2. Printsiplar: Magnit oqim oqishi va kapillyar ta&#39;sir<\/a><\/li><li><a href=\"#3-material-selection-the-first-decision-point\">3. Material tanlash: Birinchi qaror nuqtasi<\/a><\/li><li><a href=\"#4-advantages-and-limitations\">4. Afzalliklari va cheklovlari<\/a><\/li><li><a href=\"#5-practical-points-for-crane-weld-inspection\">5. Kran payvandlash tekshiruvi uchun amaliy jihatlar<\/a><\/li><li><a href=\"#6-common-misunderstandings\">6. Keng tarqalgan tushunmovchiliklar<\/a><\/li><li><a href=\"#conclusion\">Xulosa<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Payvandlash yuzasini tekshirish ko&#39;prik kranlari, portal kranlari, jib kranlari va boshqa po&#39;lat konstruksiyalar uchun juda muhimdir. Magnit zarrachalarni sinash (MT) va penetrant sinovi (PT) keng tarqalgan ikkita usuldir. MT magnit maydonga, PT esa kapillyar ta&#39;sirga tayanadi. MT faqat ferromagnit materiallar bilan cheklangan, PT esa magnit material talab qilmaydi. Noto&#39;g&#39;ri usulni tanlash nuqsonni aniqlamasligi mumkin.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"666\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-VS-Penetrant-Testing.png\" alt=\"\" class=\"wp-image-16541\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-what-do-magnetic-particle-testing-and-penetrant-testing-detect\">1. Magnit zarrachalarni sinash va penetrantlarni sinash nimani aniqlaydi?<\/h2>\n\n\n\n<p>Ikkala usul ham sirt bilan bog&#39;liq nuqsonlarni tekshiradi, ammo ularni aniqlash diapazoni va material talablari har xil.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Taqqoslash<\/th><th>Magnit zarrachalarni sinash (MT)<\/th><th>Penetrant sinovi (PT)<\/th><\/tr><\/thead><tbody><tr><td>Aniqlash diapazoni<\/td><td>Yuzaki va sirtga yaqin nuqsonlar<\/td><td>Faqat sirtni buzadigan nuqsonlar<\/td><\/tr><tr><td>Qo&#39;llaniladigan materiallar<\/td><td>Ferromagnit materiallar, masalan, uglerod po&#39;lati, kam qotishmali po&#39;lat va martensit yoki ferrit zanglamaydigan po&#39;lat<\/td><td>Zanglamaydigan po&#39;lat, alyuminiy, mis, keramika, plastmassa, uglerodli po&#39;lat va kam qotishmali po&#39;lat kabi g&#39;ovak bo&#39;lmagan materiallar<\/td><\/tr><tr><td>Ichki nuqsonlar<\/td><td>Ularni aniqlab bo&#39;lmayapti<\/td><td>Ularni aniqlab bo&#39;lmayapti<\/td><\/tr><tr><td>Odatdagi nuqsonlar<\/td><td>Yuzaki yoriqlar, sirtga yaqin yoriqlar, qirralar va choklar<\/td><td>Sirtni yorib tashlovchi yoriqlar, g&#39;ovaklik va ochiq erishning yo&#39;qligi<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Sodda qilib aytganda, MT sirtdan qisqa masofada nuqsonlarni aniqlay oladi, ammo faqat ferromagnit materiallarda. PT faqat sirtga bog&#39;liq nuqsonlarni aniqlaydi, ammo undan kengroq materiallarda foydalanish mumkin.<\/p>\n\n\n\n<p>Izoh: MT ning sirtga yaqin aniqlash chuqurligi odatda sirtdan taxminan 1-2 mm pastda deb tushuniladi. Haqiqiy chuqurlik magnitlanish usuli va nuqson o&#39;lchamiga bog&#39;liq va yagona milliy ta&#39;rif mavjud emas. Tegishli tekshirish tartibi qo&#39;llanilishi kerak. Chuqurroq nuqsonlar UT yoki RT yordamida tekshirilishi kerak.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-principles-magnetic-flux-leakage-vs-capillary-action\">2. Printsiplar: Magnit oqim oqishi va kapillyar ta&#39;sir<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-magnetic-flux-leakage-attracts-particles\">Magnit zarrachalarni sinash: Magnit oqim oqishi zarrachalarni o&#39;ziga tortadi<\/h3>\n\n\n\n<p>Ferromagnit material magnitlanganda, magnit oqimi u orqali ma&#39;lum bir yo&#39;nalishda harakatlanadi. Agar sirtda yoki uning yonida yoriq, g&#39;ovak yoki boshqa nuqson bo&#39;lsa, oqim egilib, materialdan chiqib ketadi va oqish maydonini hosil qiladi. Magnit zarrachalar oqish maydonida to&#39;planadi va nuqson joyini ochib beradi.<\/p>\n\n\n\n<p>Agar nuqson magnit oqimiga parallel bo&#39;lsa, oqish maydoni aniq ko&#39;rsatkichni hosil qilish uchun juda zaif bo&#39;lishi mumkin. Shuning uchun MT odatda ikkita o&#39;zaro perpendikulyar magnitlanish yo&#39;nalishidan foydalanadi. Kranli payvandlash uchun bo&#39;yinturuq usuli odatda payvandlash bo&#39;ylab bir marta va uning bo&#39;ylab bir marta qo&#39;llaniladi. Kross-bo&#39;yinturuq turli yo&#39;nalishdagi nuqsonlarni qoplashga ham yordam beradi.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Inspection-for-Crane-Wheel.jpg\" alt=\"\" class=\"wp-image-16534\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt-penetrant-enters-the-defect-and-developer-draws-it-out\">Penetrant sinovi: Penetrant nuqsonga kiradi va ishlab chiquvchi uni chiqarib tashlaydi<\/h3>\n\n\n\n<p>PTda penetrant ish qismi yuzasiga qo&#39;llaniladi va kapillyar ta&#39;sir orqali sirtni yorib o&#39;tuvchi nuqsonlarga kiradi. Keyin ortiqcha penetrant olib tashlanadi va ishlab chiqaruvchi qo&#39;llaniladi. Nuqson ichidagi penetrant sirtga qaytariladi va ko&#39;rinadigan belgi hosil qiladi.<\/p>\n\n\n\n<p>Nuqson sirtga ochiq bo&#39;lishi kerak. Agar yoriq oksid shlaklari, payvandlash shlaklari, bo&#39;yoq yoki boshqa ifloslanish bilan to&#39;silgan bo&#39;lsa, penetrent kira olmaydi va PT uni aniqlay olmasligi mumkin.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-material-selection-the-first-decision-point\">3. Material tanlash: Birinchi qaror nuqtasi<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-is-limited-to-ferromagnetic-materials\">Magnit zarrachalarni sinash faqat ferromagnit materiallar bilan cheklangan<\/h3>\n\n\n\n<p>Q235, Q355 va Q390 kabi uglerodli po&#39;lat va kam qotishmali po&#39;lat ferromagnit bo&#39;lib, MT bilan tekshirilishi mumkin. 304 va 316 seriyali ostenitik zanglamaydigan po&#39;lat, shuningdek, alyuminiy, mis va titan ferromagnit emas va MT bilan tekshirilishi mumkin emas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt-is-suitable-for-non-porous-materials\">Penetrant sinovi g&#39;ovak bo&#39;lmagan materiallar uchun mos keladi<\/h3>\n\n\n\n<p>PT magnit materiallarni talab qilmaydi, lekin sirt g&#39;ovak bo&#39;lmasligi kerak. Zanglamaydigan po&#39;lat, alyuminiy, mis, keramika, plastmassalar, uglerodli po&#39;lat va kam qotishmali po&#39;latlarning barchasini PT bilan tekshirish mumkin. Cho&#39;yan va kukunli metallurgiya qismlari kabi g&#39;ovak materiallar odatda yaroqsiz, chunki penetrant g&#39;ovaklarga kirib, noto&#39;g&#39;ri ko&#39;rsatkichlarni yaratishi mumkin.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"selection-principle-for-structural-welds\">Strukturaviy payvandlash uchun tanlov printsipi<\/h3>\n\n\n\n<p>GB 50661-2011 ning 8.2.6-bandiga muvofiq, ferromagnit materiallar sirt kamchiliklarini aniqlash uchun magnit zarrachalar sinovidan foydalanishi kerak. MT dan foydalanib bo&#39;lmaganda, penetrant sinovdan foydalanish kerak. Umumiy ko&#39;taruvchi kran va metallurgiya kran konstruktsiyalari uchun MT odatda uglerodli po&#39;lat va kam qotishmali po&#39;latdan payvandlash uchun birinchi tanlovdir, PT esa ostenitik zanglamaydigan po&#39;latdan payvandlash va alyuminiy konstruktsiyalar uchun ishlatiladi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-advantages-and-limitations\">4. Afzalliklari va cheklovlari<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Taqqoslash<\/th><th>Magnit zarrachalarni sinash (MT)<\/th><th>Penetrant sinovi (PT)<\/th><\/tr><\/thead><tbody><tr><td>Tekshirish tezligi<\/td><td>Tez va ommaviy tekshirish uchun mos<\/td><td>Sekinroq, chunki kirish, tozalash va ishlab chiqish vaqt talab etadi<\/td><\/tr><tr><td>Sezgirlik<\/td><td>Yuzaki va sirtga yaqin yoriqlarga yuqori sezuvchanlik<\/td><td>Sirtni yorib yuboradigan nuqsonlarga yuqori sezuvchanlik<\/td><\/tr><tr><td>Narxi<\/td><td>Odatda pastroq<\/td><td>Penetrant va ishlab chiquvchi uchun sarflanadigan xarajat<\/td><\/tr><tr><td>Sirt talablari<\/td><td>Yog &#39;, zang va payvandlashdagi dog&#39;larni olib tashlash kerak<\/td><td>Sirt toza, quruq va qoplamasiz bo&#39;lishi kerak<\/td><\/tr><tr><td>Tekshiruvdan keyingi davolash<\/td><td>Demagnetizatsiya va tozalash talab qilinishi mumkin<\/td><td>Qoldiq penetrant va ishlab chiquvchini olib tashlash kerak<\/td><\/tr><tr><td>Cheklovlar<\/td><td>Faqat ferromagnit materiallar; noqulay yo&#39;nalishga ega nuqsonlar e&#39;tiborga olinmasligi mumkin<\/td><td>Faqat sirtni yorib tashlaydigan nuqsonlar; g&#39;ovakli materiallar uchun yaroqsiz<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-practical-points-for-crane-weld-inspection\">5. Kran payvandlash tekshiruvi uchun amaliy jihatlar<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt\">Magnit zarrachalarni sinash<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yo&#39;nalishga bog&#39;liq yoriqlarning yo&#39;qolishi xavfini kamaytirish uchun kamida ikkita o&#39;zaro perpendikulyar magnitlanish yo&#39;nalishidan foydalaning.<\/li>\n\n\n\n<li>Yog &#39;, zang va payvandlash sachrashlarini olib tashlang. Jarayonga muvofiq uzluksiz yoki qoldiq usulni tanlang.<\/li>\n\n\n\n<li>Zarur bo&#39;lganda sinovdan o&#39;tkazgandan so&#39;ng magnitlanishini kamaytiring. Floresan zarrachalarni kuzatish uchun ultrabinafsha nurlaridan va floresan bo&#39;lmagan zarrachalar uchun yetarli oq nurdan foydalaning.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1706\" height=\"1136\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-for-Jib-Crane.jpg\" alt=\"\" class=\"wp-image-16537\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-for-Jib-Crane.jpg 1706w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/10\/Magnetic-Particle-Testing-for-Jib-Crane-1536x1023.jpg 1536w\" sizes=\"(max-width: 1706px) 100vw, 1706px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt\">Penetrant sinovi<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yog &#39;, zang, qoplamalar va payvandlash shlaklarini olib tashlang, shunda nuqsonli teshiklar tiqilib qolmaydi.<\/li>\n\n\n\n<li>Kutish vaqtini mahsulot ko&#39;rsatmalariga va yozma protseduraga muvofiq belgilang. Odatda bu 5\u201360 daqiqa, ko&#39;pincha xona haroratida payvandlash tekshiruvi uchun 10\u201330 daqiqa ishlatiladi va u ishlab chiqaruvchi tomonidan tavsiya etilgan vaqtdan qisqa bo&#39;lmasligi kerak.<\/li>\n\n\n\n<li>Quritish jarayonidan tashqari, ish qismi, sinov yuzasi va atrof-muhit harorati odatda 10\u201350 \u00b0C bo&#39;lishi kerak. Agar sharoitlar ushbu diapazondan tashqariga chiqsa, GB\/T 18851.5 va GB\/T 18851.6 ning tegishli qoidalarini qo&#39;llang.<\/li>\n\n\n\n<li>Haddan tashqari yoki yetarlicha tozalashdan saqlaning. Ishlab chiqaruvchini yupqa, tekis qatlam sifatida qo&#39;llang va tekshirilgandan so&#39;ng qoldiq penetrant va ishlab chiqaruvchini olib tashlang.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-common-misunderstandings\">6. Keng tarqalgan tushunmovchiliklar<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-and-pt-are-interchangeable\">Magnit zarrachalarni sinash va penetrant sinovlari bir-birining o&#39;rnini bosadi<\/h3>\n\n\n\n<p>Ular unday emas. MT faqat ferromagnit materiallar bilan cheklangan, PT esa faqat sirtni yorib yuboradigan nuqsonlarga sezgir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pt-can-detect-near-surface-defects\">Penetrant sinovi sirtga yaqin nuqsonlarni aniqlashi mumkin<\/h3>\n\n\n\n<p>Bu mumkin emas. Sirtga yaqin nuqsonlar odatda MT bilan tekshiriladi, chuqurroq ichki nuqsonlar esa UT yoki RT bilan tekshirilishi kerak.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-is-always-more-sensitive-than-pt\">Magnit zarrachalarni sinash har doim penetrant sinovdan ko&#39;ra sezgirroqdir<\/h3>\n\n\n\n<p>Albatta emas. PT sirtni yorib yuboradigan yoriqlarga juda sezgir bo&#39;lishi mumkin, MT esa sirtga yaqin nuqsonlarni ham aniqlashi mumkin. Haqiqiy natija protsedura, sirt holati va nuqson xususiyatlariga bog&#39;liq.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"mt-or-pt-eliminates-the-need-for-internal-inspection\">Magnit zarrachalarni sinash yoki penetrant sinovi ichki tekshirishga ehtiyojni yo&#39;q qiladi<\/h3>\n\n\n\n<p>Bunday emas. MT va PT ichki tekshirishning o&#39;rnini bosa olmaydi. Ichki g&#39;ovaklik, shlak qo&#39;shilishlari, erishning yo&#39;qligi va ichki yoriqlar UT yoki RT yordamida tekshirilishi kerak.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"every-stainless-steel-weld-must-use-pt\">Har bir zanglamaydigan po&#39;latdan yasalgan payvandlash payvandlashda penetrant sinovidan o&#39;tishi kerak<\/h3>\n\n\n\n<p>Narx muhim. 304 va 316 seriyali ostenitik zanglamaydigan po&#39;lat odatda ferromagnit emas va PT dan foydalanishi kerak. 410 va 420 seriyali martensitik zanglamaydigan po&#39;lat va 430 seriyali ferritik zanglamaydigan po&#39;lat ferromagnitdir va MT dan foydalanishi mumkin. 2205 dupleks zanglamaydigan po&#39;lat ham ma&#39;lum magnit javobga ega, ammo uning sezgirligi odatda uglerod po&#39;latiga qaraganda pastroq. Zanglamaydigan po&#39;latni navini tekshirmasdan PT ga tayinlash mumkin emas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Xulosa<\/h2>\n\n\n\n<p>MT va PT o&#39;rtasidagi farqni uchta fikrda umumlashtirish mumkin:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Aniqlash diapazoni: MT sirt va sirtga yaqin nuqsonlarni aniqlaydi, PT esa faqat sirtni yorib o&#39;tuvchi nuqsonlarni aniqlaydi.<\/li>\n\n\n\n<li>Qo&#39;llaniladigan materiallar: MT faqat ferromagnit materiallar bilan cheklangan, PT esa g\u00f6zenekli bo&#39;lmagan materiallar uchun mos keladi.<\/li>\n\n\n\n<li>Tanlash printsipi: Ferromagnit materiallar uchun avval MT dan foydalaning; MT qo&#39;llanilishi mumkin bo&#39;lmagan hollarda PT dan foydalaning.<\/li>\n<\/ul>\n\n\n\n<p>Umumiy po&#39;lat payvandlash uchun <a href=\"https:\/\/www.hndfcrane.com\/uz\/overhead-cranes\/\">ko&#39;prikli kranlar<\/a>, portal kranlari va jib kranlari, uglerodli po&#39;lat va kam qotishmali po&#39;lat uchun avval MT ni ko&#39;rib chiqing va ostenitik zanglamaydigan po&#39;lat va alyuminiy konstruksiyalar uchun PT dan foydalaning. Ikkala usul ham ichki payvandlash nuqsonlari uchun UT yoki RT ni almashtirmaydi.<\/p>","protected":false},"excerpt":{"rendered":"Weld surface inspection is essential for overhead cranes, gantry cranes, jib cranes, and other steel structures. Magnetic particle testing (MT) and penetrant testing (PT) are two commonly used methods. MT relies on a magnetic field, while PT relies on capillary action. MT is limited to ferromagnetic materials, whereas PT has no magnetic-material requirement. Choosing the [&hellip;]","protected":false},"featured_media":16541,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[807],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts\/16528"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":11,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts\/16528\/revisions"}],"predecessor-version":[{"id":16542,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/xmxposts\/16528\/revisions\/16542"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/media\/16541"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/media?parent=16528"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/posts_category?post=16528"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/uz\/wp-json\/wp\/v2\/posts_tag?post=16528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}