Mesh (shkalasi) - Mesh (scale)
 | Bu maqola uchun qo'shimcha iqtiboslar kerak tekshirish. (2017 yil iyul) (Ushbu shablon xabarini qanday va qachon olib tashlashni bilib oling) |
| Granulometriya | |
|---|---|
 | |
| Asosiy tushunchalar | |
| Zarrachalar hajmi · Don hajmi Hajmi taqsimoti · Morfologiya | |
| Usullari va usullari | |
| Mesh o'lchovi · Optik granulometriya Elakni tahlil qilish · Tuproqning gradatsiyasi | |
Tegishli tushunchalar | |
| Granulyatsiya · Granulali material Mineral chang · Naqshni tanib olish Nurning dinamik ravishda tarqalishi | |
Mesh tez-tez aniqlashda ishlatiladigan zarracha hajmini o'lchashdir zarracha kattaligi a donador material. Masalan, yuk mashinasi yong'oqdan olingan namuna 5 mm teshiklari bo'lgan mash ustiga joylashtirilishi mumkin. Meshni silkitganda, mayda singan qismlar va changlar meshdan o'tib, butun er yong'oqlari meshda saqlanadi. Tijorat yerfıstığı xaridorlari bunday sinovdan foydalanib, yeryong'oqning bir qismi juda ko'p singan bo'ladimi yoki yo'qligini aniqlashi mumkin. Ushbu turdagi sinov ba'zi sanoat tarmoqlarida keng tarqalgan bo'lib, bir xil sinov usullarini osonlashtirish uchun bir nechta standartlashtirilgan mash qatorlari yaratildi.
Metall yuzalar mexanik jilolangan a deb belgilangan mexanik tugatish ishlatilgan abraziv bilan bog'liq.
Ko'p mash o'lchamlari tarixiy ravishda dyuymdagi teshiklar sonida berilgan; Meshdagi simlarning kengligi sababli, tarmoq raqamlari to'g'ridan-to'g'ri fraksiyonel dyuym o'lchamlariga to'g'ri kelmadi va bir xil tarmoq raqamlari uchun biroz boshqacha o'lchamdagi o'lchamlar bilan standartlashtirilgan bir nechta turli xil tizimlar.
Tijorat o'lchovlari
| Elakning kattaligi | Ochilish | Standart mash | Uzoqqa burama mato | Tegirmon navi | Bozor darajasi | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (mm ) | (yilda ) | (mkm ) | BIZ | Tayler | Mesh | Ochilish | Sim | Mesh | Ochilish | Sim | Mesh | Ochilish | Sim |
| 5.60 | 0.22 | 5600 | 3.5 | - | - | - | - | - | - | - | - | - | - |
| 4.75 | 0.187 | 4750 | 4 | - | - | - | - | - | - | - | - | - | - |
| 4.00 | 0.157 | 4000 | 5 | - | - | - | - | - | - | - | - | - | - |
| 3.35 | 0.132 | 3350 | 6 | - | - | - | - | - | - | - | - | - | - |
| 2.80 | 0.110 | 2800 | 7 | - | - | - | - | - | - | - | - | - | - |
| 2.36 | 0.093 | 2360 | 8 | - | - | - | - | - | - | - | - | - | - |
| 2.00 | 0.079 | 2000 | 10 | - | - | - | - | - | - | - | - | - | - |
| 1.70 | 0.0661 | 1700 | 12 | 10 | 14 | 0.062 | 0.009 | 12 | 0.065 | 0.018 | 12 | 0.0603 | 0.023 |
| 1.40 | 0.0555 | 1400 | 14 | 12 | 16 | 0.0535 | 0.009 | 14 | 0.054 | 0.017 | 14 | 0.051 | 0.0204 |
| 1.18 | 0.0469 | 1180 | 16 | 14 | 18 | 0.0466 | 0.009 | 16 | 0.0465 | 0.016 | 16 | 0.0445 | 0.0181 |
| 1.00 | 0.0394 | 1000 | 18 | 16 | 22 | 0.0380 | 0.0075 | 18 | 0.0406 | 0.015 | 18 | 0.0386 | 0.0173 |
| 0.85 | 0.0331 | 850 | 20 | 20 | 24 | 0.0342 | 0.0075 | 20 | 0.0360 | 0.014 | 20 | 0.034 | 0.0162 |
| 0.71 | 0.0278 | 710 | 25 | 24 | 28 | 0.0282 | 0.0075 | 24 | 0.0287 | 0.013 | 24 | 0.0277 | 0.014 |
| 0.60 | 0.0232 | 600 | 30 | 28 | 34 | 0.0229 | 0.0065 | 30 | 0.0238 | 0.0095 | - | - | - |
| 0.50 | 0.0197 | 500 | 35 | 32 | 38 | 0.0198 | 0.0065 | 34 | 0.0204 | 0.009 | 30 | 0.0203 | 0.0128 |
| 0.47 | - | 470 | - | 40 | 0.0185 | 0.0065 | 36 | 0.0188 | 0.009 | - | - | - | |
| 0.465 | - | 465 | - | 42 | 0.0183 | 0.0055 | 38 | 0.0178 | 0.0085 | - | - | - | |
| 0.437 | - | 437 | - | 44 | 0.0172 | 0.0055 | - | - | - | 35 | 0.0176 | 0.0118 | |
| 0.425 | 0.0165 | 425 | 40 | 35 | 46 | 0.0162 | 0.0055 | 40 | 0.0165 | 0.0085 | - | - | - |
| 0.389 | - | 389 | - | 48 | 0.0153 | 0.0055 | - | - | - | 40 | 0.0150 | 0.0104 | |
| 0.368 | - | 368 | - | 50 | 0.0145 | 0.0055 | - | - | - | - | - | - | |
| 0.355 | 0.0139 | 355 | 45 | 42 | 52 | 0.0137 | 0.0055 | 45 | 0.0142 | 0.008 | - | - | - |
| 0.310 | - | 310 | - | 60 | 0.0122 | 0.0045 | 50 | 0.0125 | 0.0075 | - | - | - | |
| 0.300 | 0.0117 | 300 | 50 | 48 | 62 | 0.0116 | 0.0045 | 55 | 0.0112 | 0.007 | - | - | - |
| 0.282 | - | 282 | - | 64 | 0.0111 | 0.0045 | - | - | - | 50 | 0.0110 | 0.0090 | |
| 0.270 | - | 270 | - | 70 | 0.0106 | 0.0037 | - | - | - | - | - | - | |
| 0.260 | - | 260 | - | 72 | 0.0102 | 0.0037 | - | - | - | - | - | - | |
| 0.250 | 0.0098 | 250 | 60 | 60 | 74 | 0.0098 | 0.0037 | 60 | 0.0102 | 0.0065 | - | - | - |
| 0.241 | - | 241 | - | 76 | 0.0095 | 0.0037 | - | - | - | - | - | - | |
| 0.231 | - | - | - | - | 78 | 0.0091 | 0.0037 | - | - | - | 60 | 0.0092 | 0.0075 |
| 0.212 | 0.0083 | 212 | 70 | 65 | 84 | 0.0084 | 0.0035 | - | - | - | - | - | - |
| 0.193 | - | - | - | - | 90 | 0.0076 | 0.0035 | - | - | - | - | - | - |
| 0.180 | 0.0070 | 180 | 80 | 80 | 94 | 0.0071 | 0.0035 | - | - | - | 80 | 0.0070 | 0.0055 |
| 0.165 | - | - | - | - | 105 | 0.0065 | 0.0030 | - | - | - | - | - | - |
| 0.150 | 0.0059 | 150 | 100 | 100 | 120 | 0.0058 | 0.0025 | - | - | - | 100 | 0.0055 | 0.0045 |
| 0.125 | 0.0049 | 125 | 120 | 115 | 145 | 0.0047 | 0.0022 | - | - | - | 120 | 0.0046 | 0.0037 |
| 0.105 | 0.0041 | 105 | 140 | 150 | 165 | 0.0042 | 0.0019 | - | - | - | 150 | 0.0041 | 0.0026 |
| 0.090 | 0.0035 | 90 | 170 | 170 | 200 | 0.0034 | 0.0016 | - | - | - | 180 | 0.0033 | 0.0023 |
| 0.075 | 0.0029 | 75 | 200 | 200 | 230 | 0.0029 | 0.0014 | - | - | - | 200 | 0.0029 | 0.0021 |
| 0.063 | 0.0024 | 63 | 230 | 250 | - | - | - | - | - | - | 250 | 0.0024 | 0.0016 |
| 0.053 | 0.0021 | 53 | 270 | 270 | 300 | 0.0021 | 0.0012 | - | - | - | 270 | 0.0021 | 0.0016 |
| 0.044 | 0.0017 | 44 | 325 | 325 | - | - | - | - | - | - | 325 | 0.0017 | 0.0014 |
| 0.037 | 0.0015 | 37 | 400 | 400 | - | - | - | - | - | - | 400 | 0.0015 | 0.0010 |
| 0.025 | 0.0010 | 25 | 500 | - | - | - | - | - | - | - | 500 | 0.0010 | 0.0010 |
5 mm dan 25,4 mm gacha bo'lgan teng o'lchamdagi mash o'lchamlari ham mavjud.[1][2][3]
Mavjud elak o'lchamlari odatda standartlar bilan tartibga solinadi. Umumiy foydalaniladiganlar ISO 565: 1990 va ISO 3310-1: 2000 (xalqaro),[4] EN 933-1 (Evropa)[5] va ASTM E11: 01 (AQSh). EN standartlari BS EN, FR EN, DE va boshqalar kabi milliy "nishonlar" bilan ta'minlanadi.
Amaliy o'lchamlar
Garchi bunday ma'lumotlar elak o'lchamlarining uzun ro'yxatlarini o'z ichiga olgan bo'lsa-da, amalda elaklar odatda ketma-ketlikda qo'llaniladi, unda har bir element elak tanlab olinadigan zarralar taxminan 1 /√2 oldingi elakka qaraganda diametri kichikroq yoki tasavvurlar maydoni bo'yicha 1/2 kichikroq. Masalan, 80mm, 63, 40, 31.5, 20, 16, 14, 10, 8, 6.3, 4, 2.8, 2 mm seriyali ko'plab Evropa mamlakatlarida yoki 63, 31.5, 16 qadamlari bilan ketma-ketlikda muntazam ravishda mavjud. 8, 4, 2, 1 mm, 500 mkm, 250, 125, 63 mkm odatda qurilish sanoatida agregatlarni saralash uchun ishlatiladi. Bunday ketma-ketliklar biroz avval Renar tomonidan o'rnatilgan va hozirda ma'lum bo'lgan printsiplardan kelib chiqqan Renard seriyasi. Ba'zi foydalanuvchilar yuqorida ko'rsatilganlarning bir qismini 45, 22,4, 12,5, 11,2 va 5,6 mm o'lchamdagi elaklarga almashtiradilar, bu asosan ularning o'lkalarida yoki sanoatida bunday o'lchamlarning tarixiy qo'llanilishi bilan bog'liq.
Adabiyotlar
- ^ "5 mikrondan 25,4 mm gacha bo'lgan teng tarmoq o'lchamlari", delloyd.50megs.com, olingan 2009-05-19
- ^ "Zarrachalar hajmini o'zgartirish", www.sigmaaldrich.com, olingan 2012-01-24
- ^ "Zarrachalarning kattaligi - AQSh elaklari seriyasi va Tayler Meshning ekvivalentlari". www.azom.com. Olingan 2020-10-13.
- ^ ISO 3310-1: 2000 Sinov elaklari - Texnik talablar va sinovlar - 1-qism: Metall simli matoning elaklari www.iso.org, kirish 13 oktyabr 2020 yil
- ^ DIN EN 933-1 Agregatlarning geometrik xususiyatlari bo'yicha testlar - 1-qism: Zarrachalarning kattaligini taqsimlashni aniqlash - Element usuli ' www.en-standard.eu, kirish 13 oktyabr 2020 yil