Quvurlarni bukish va yasash

Quvurlar va quvurlarni ishlab chiqarish arralash, kesish, bükme, uchini shakllantirish, kesish, qirqish, qirqish, yiv ochish va tishlash kabi shakllantirish jarayonlari kabi ishlab chiqarishning keng doirasini qamrab oladi va bükme eng keng tarqalgan ishlab chiqarish echimlaridan biridir. Buni qoʻlda yoki issiq yoki sovuq shakllantirish yechimlari orqali{0}}kompyuter tomonidan boshqariladigan bukuvchi mashinalar yordamida bajarish mumkin.

√  Knowing the specification of the tube, and the centerline radius, the outside diameter, and wall thickness are critical variables. Other bending variables include the inside bend radius, the outside bend radius, and the centerline radius or the neutral line are equally important factors for making correct bending.
√  Spingback effect, tubes will most probably springback after bending, generating a radial growth. In general, stainless steel tube has stronger springback effect than mild steel. 
√  For welded tube, if the weld seam or weld bead is too large or inconsistent, it will affect the tube bending roundness. 
√  Elongation effect, the outside radius stretches while inside radius compresses and at a certain point starts to wrinkle. Bending normally cause ovality, or a distortion of the cross section from its original round shape.

Quvurni bükme jarayoni trubkani bükme mashinasiga yuklashdan boshlanadi, so'ngra uni ikkita matritsaga (siqish bloki va shakllantiruvchi qolipga) mahkamlang va ikkita boshqa matritsa (bosim o'tkazgich va artgich qolipi) trubkani bo'shashmasdan ushlab turadi.
The second step is to apply force to push stock tubing or pipe against a die, forcing the tube to adjust to the die's shape. Quite often, the stock pipe is held in place while its end is rotated against the bending machine's die.
Quvurni bir nechta bükme jarayonlari uchun kolba ichiga qulab tushmasligi uchun mandrel o'rnatilishi kerak, bunda trubka stress paytida har qanday shikastlanishga to'sqinlik qilish uchun o'chirish moslamasi tomonidan taranglikda ushlab turiladi. Quvurga shikast etkazmaslik uchun, artib olish moslamasi ko'pincha alyuminiy yoki guruch kabi yumshoqroq materiallardan yasalgan bo'lib, trubkani tirnashning oldini oladi.
There are few different bending machines are popular in the market, and they are human-powered, hydraulic-assisted, hydraulic-driven and pneumatic-powered. 

CLR- Markaziy chiziq radiusi: Odatda CLR mandrelsiz trubaning OD dan 3x katta. 1 yoki 2xD egilishda egilish mumkin, ammo murakkabroq asboblarsiz emas.
Shlangi mandrelni 3 sharli mandrelli o'chirish moslamasi bilan solishtirganda asboblar xarajatlari ham ortadi. Radius qanchalik qattiq bo'lsa, asbob-uskunalar shunchalik ko'p talab qilinadi va qism qimmatroq bo'ladi.
Dizayn cheklovlari bilan taqiqlanmagan bo'lsa, barcha burmalar uchun bir xil CLR dan foydalaning. Burilishlar orasidagi to'g'ridan-to'g'ri: egilishlar orasidagi va trubaning chetidan siqish uchun OD ning 3xiga ruxsat bering.
Bu qo'shimcha trim operatsiyalarini kamaytirish va egilish tezligini oshirish orqali qismning umumiy narxini pasaytiradi. 3xD dan yaqinroq egilishlar asbob narxini oshiradigan va egilish tezligini kamaytiradigan aralash asboblarni talab qiladi.

Bükme yechimi dastur talablariga ko'ra hal qilinadi va to'rtta egilish yechimi mavjud: ram{0}}turi egilish, rulonli egilish, siqish egilishi yoki aylanma chizmali bükme.
Ram bending, one of the simplest tube bending solution, it uses a hydraulically driven ram that forces a tube against rollers to achieve a centerline radius that's normally three to four times of the tube outside diameter (OD).
This solution is popular in square or rectangular tubing, for which many design the ram tool so that it deliberately compresses and slightly deforms the inside bend radius, and the workpiece ID isn't supported by mandrel. Due to its simple set up, this solution is the cheapest fabrication method, and it is not suitable for tight bending tolerance. It is suited for applications in which a round cross-section is not required, as the lack of a mandrel and internal supports can cause deformation resulting in an oval-shaped cross-section.

Roll Bending 

Ushbu yechim odatda qurilish uchun katta quvurlar uchun mo'ljallangan va rulonli bükme odatda piramidada joylashgan uchta rulonga ega va bu bükme eritmasi ko'pincha spirallarni ishlab chiqarish uchun ishlatiladi. Rolikli egilish kichik deformatsiyalar bilan nisbatan bir xil-kesimlarni hosil qiladi va u baraban rulolari, asbob ramkalari, truss quvurlari va boshqa yumaloq, katta diametrli qismlarni tayyorlash uchun ishlatiladi.

Mandrel Bending 

Mandrelni bükme, trubkani statsionar egilish qolipi atrofida egish uchun siqish matritsasidan (rolik) foydalanadi va rolik trubkani markaziy egilish qolipiga samarali tarzda siqib chiqaradi.
This method is most suitable for symmetrical tube bending, and it fits perfectly well for tubes bent to a center line radius (CLR) that's at least three times the tube OD.
Mandrani bükme - bu nisbatan aniq jarayon bo'lib, u quvurlar yoki quvurlarda juda kam deformatsiyalarni keltirib chiqaradi va u ichki armaturalardan foydalanish tufayli ingichka quvurlarni yaqinroq radiusga egishi mumkin.

Rotary Draw Bending 

For precision bending, rotary draw bending is the best option as it can achieve tight radii, making CLR less than 1 time of the outside tube. The biggest benefit is that this solution gives operator maximum control over wall thinning and ovality. The bending mechanism is that the pressure die holds the straight section of the tube while the clamp die rotates the workpiece around bend die with the mandrel consisting of articulating balls supporting the tube interior around the bend. In addition, some draw bending machines can be programmed to repeat complex bending operations on multiple workpieces, improving the precision and uniformity of a production run.

To'rtburchaklar trubaning aylanishli egilishi

Burilishli dumaloq quvur

√  As a rule of thumb, make sure you have a combination of hard and soft material. If you have a hard workpiece, you need a soft mandrel; if you have a soft workpiece, you need to use a hard mandrel.
√  Radial growth or springback effect shall be taken into consideration.
√  Welded tube shall have consistent weld bead
√  Wiper die position shall be angled slightly so that its end contacts the tube just before the inside radius tangent point
√  The length of the clamping die shall be at least three times of the tube diameter, and the shorter the clamp is, the more pressure it puts on a short section of the workpiece, thus increasing the risk of deforming the tube.
√  For thin wall tubes, mandrel with balls supporting the tube ID is critical, and the series of balls shall start at the bend's beginning tangent point.
√  Bending force shall be strictly controlled when bending thin tubes, and controlling degrees of physical deformation on both inner and outside tube is important for creating a smooth rounded bend. 
√  Tube wall thickness factor, the ratio of a tube's wall thickness to its external diameter is critical to determine whether a tube should be treated as a thin or thick tube.
√  Lubricant is critical for heavy-duty bending with thick walls and tight radii, and concentrated lubrication is often used.
Shu bilan birga, tozalagichlar ham erta eskirishning oldini olish uchun aloqa joyida to'g'ri yog'lanishi kerak.

√  Crack
√  Wrinkle
√  Kinking
√  Flattening
√  Distortion

Asosiy sabablar quyidagilardir:
√  Mandrel is not positioned properly in the tube
√  Bending thin wall tube or pipe without a mandrel
√  Clamping point is too close to the radius
√  Bending die, pressure die, wiper die, clamp die and mandrel are not corresponding well to the tube
√  Tube is not clamped properly during bending process
√  Bending radius is not calculated correctly

Fabmann quvurlarni bükme va ishlab chiqarish bo'yicha keng ma'lumotga ega bo'lgan professional ishlab chiqarish muhandislik guruhiga ega va biz alyuminiy quvur, yumshoq po'lat quvur va zanglamaydigan po'lat quvurlardan suvni tozalash, raf tizimi va dock qurilishi sektorlari uchun turli xil buyurtma qismlarni ishlab chiqarish uchun foydalanamiz. Biz doimo jarayonlarni soddalashtirish va mijozlarimiz uchun -tejamkor natijalarni taqdim etish yo‘llarini topishga intilamiz va mos kelmaslik holatlarini kamaytirish-yo‘llarini qidirib, sifatli mahsulotlar taqdim etishda davom etamiz. Biz bu natijalarga tajribali xodimlarni aylanmani qisqartirish uchun saqlab qolish, yetkazib beruvchilar bilan mustahkam aloqalarni saqlab qolish va tezroq rivojlanish natijalari uchun-uydagi asboblarni loyihalash jarayoniga tayanish orqali erishamiz. Mijozlarga prototiplarni yaratish va mavjud dizaynlarni takomillashtirishda yo'l-yo'riq ko'rsatish uchun keng bilim bazamizdan foydalanamiz. Fabmann shuningdek, korroziyaga qarshi yuqori ishlash uchun po'lat quvurlarga issiq daldırma galvanizatsiyasi, chang bo'yash va bo'yash kabi turli xil metall sirtini ishlov berishni qo'llaydi. Bizning quvurlarni bükme ishlab chiqarishimiz quyidagi sohalarga xizmat qiladi:
√  Handrails
√  Bike Racks
√  Industrial Racks
√  Pallet forklift
√  Machinery
√  Solar Energy

Bükme yo'li bilan yorilgan trubka

U Benddagi buzilish

Bukilgan quvur

Katta Rasius Benddagi burilish

Turli radiusli ajinli egilish

Ajinlangan egilish

√  Square steel tube, black or galvanized, seamless or welded.
√  Rectangular steel tube, black or galvanized, seamless or welded.
√  Round steel tube upto 120mm (OD), seamless or welded.

Fabmann turli xil quvurlarni ishlab chiqarish xizmatini taqdim etadimetall yuzasiga ishlov berishuchunlift mexanizmlari and Aquaculture, and our team impletements strict production process control during daily operation. FAI (first article inspection) is fully excuted  for each order, and full traceablity of our production is deeply rooted in our day to day operation. 

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