{"product_id":"u-bend-tube-orbital-welding-machine-c12-c25-ai-cooling","title":"FYID U12-U25 자동 U-벤드 튜브 궤도 용접 기계(AI 데이터 센터 냉각 및 열교환기용)","description":"AI 데이터 센터 액체 냉각 및 열 교환기 튜브 번들용 U-벤드 튜브 궤도 TIG 용접기 — Φ9mm ~ Φ25mm 결합된 벽 두께가 1.6mm 이하인 소켓 용접\nFYID-Feiyide FXT20 Pro + U 시리즈 시리즈는 U-벤드 튜브와 직선 튜브 사이의 원주 필렛 용접을 위해 특별히 제작된 자동 궤도 GTAW(TIG) 용접 시스템입니다. 이는 열교환기 U-튜브 번들, AI 데이터 센터 액체 냉각 모듈 및 제약 이중 튜브 열교환기에서 볼 수 있는 \"튜브-인-튜브\" 소켓 조인트 형상입니다.\n이 시스템은 FXT20 Pro 프로그래밍 가능 전원(5A – 200A DC, 펄스 모드)을 C12, C16, C20 또는 C25 U-벤드 용접 헤드와 쌍으로 연결하여 각각 최대 Φ12, 16, 20 또는 25mm의 직선 튜브 외경을 덮고 결합 소켓 벽 두께는 1.6mm 이하입니다. 용접 헤드의 말굽형 구조에는 38mm(C12\/C16) ~ 60mm(C25)의 최소 튜브 중심 간격이 필요하며, 이는 데이터 센터 냉각 인프라에 사용되는 대부분의 쉘 앤 튜브 및 인쇄 회로 열 교환기의 표준 정삼각형 튜브 피치 내에 맞습니다.\n본 제품은 U-벤드 조인트에 적합한 범용 오비탈 용접기가 아닙니다. FXT20 Pro + U 시리즈 시리즈는 회전 중 내부 튜브 표면의 아크 길이 불안정성, 소켓의 얇은 결합 벽 ​​두께에 대한 번스루, 오버헤드 패스 중 316L 스테인레스 스틸 내부 벽의 불충분한 아르곤 보호 등 이 조인트 형상에 고유한 세 가지 실패 모드를 위해 처음부터 설계되었습니다. 각각은 아래 사양에 설명된 특정 설계 기능(완전 폐쇄 루프 서보 회전, 5A 최소 아크 개시 및 이중 채널 통합 아르곤 보호)으로 해결됩니다.\n데이터 센터 액체 냉각 루프 배관(U-벤드 소켓 조인트 아님)의 직선 튜브 둘레 용접의 경우 얇은 벽 응용 분야에서 Φ6.35mm – Φ168mm 튜브 OD를 덮는 C 시리즈 밀폐형 헤드가 있는 FXT20을 참조하세요.\n\nFXT20 Pro + U 시리즈 시스템 사양 - 전원 및 U-벤드 용접 헤드 모델\nFXT20 Pro 전원\n\n매개변수\n사양\n\n\n용접 공정\nAutogenous GTAW(TIG) — DC 및 펄스 모드\n\n\n출력 전류 범위\n5A – 200A DC\n\n\n최소 아크 개시 전류\n5A(결합된 벽이 1.6mm 이하인 경우 번스루 방지)\n\n\n현재 유형\nDC \/ 펄스 - 피크 및 베이스 전류를 독립적으로 조정 가능\n\n\n입력 전압\n220V AC ±10% 또는 110V AC(선택 가능)\n\n\n빈도\n50\/60Hz 자동 적응\n\n\n소비전력\n4.5KVA\n\n\nHMI 디스플레이\n10인치 컬러 터치스크린, 중국어\/영어\n\n\n용접 구역\n원주 용접당 최대 8개의 독립 구역\n\n\n저장된 프로그램\n200개 그룹\n\n\n데이터 출력\n내장 용접 매개변수 프린터; USB 내보내기\n\n\n회전 구동\n고해상도 인코더를 갖춘 완전 폐쇄 루프 서보 모터\n\n\n드라이브 응답 시간\n\u003c1ms(스테퍼 모터 대비 스텝 손실 위험 제거)\n\n\n토치 냉각\n순환수(유량 ≥600ml\/min, 0.3MPa)\n\n\n표준 케이블 길이\n8미터 길이의 유연한 케이블\n\n\n인증\nCE, ISO 9001\n\nC-시리즈 U-벤드 용접 헤드 - 접합 형상 요구 사항\n\n머리 모델\n최대 직선형 튜브 OD\n결합된 벽 두께\n최소 튜브 중심 간격\n최소 직선 튜브 연장\n머리 무게\n\n\nC12\n≤ Φ12mm\n1.6mm 이하\n≥ 38mm\n튜브시트 면에서 ≥ 36mm\n1.5kg\n\n\nC16\n≤ Φ16mm\n1.6mm 이하\n≥ 38mm\n튜브시트 면에서 ≥ 36mm\n2.0kg\n\n\nC20\n≤ Φ20mm\n1.6mm 이하\n≥ 54mm\n튜브시트 면에서 ≥ 36mm\n3.0kg\n\n\nC25\n≤ Φ25mm\n1.6mm 이하\n≥ 60mm\n튜브시트 면에서 ≥ 36mm\n3.5kg\n\nU-벤드 삽입 및 맞춤 요구 사항\nU자형 튜브는 직선 튜브에 8mm 이상의 깊이로 삽입됩니다(직선 튜브 끝면에서 측정). 소켓 삽입 간격은 얇은 벽 두께의 10% 이하입니다. 대부분의 응용 분야에서는 간격이 0이 목표입니다. 직선형 튜브의 진원도는 회전하는 동안 일정한 호 길이를 유지하기 위해 5% 미만이어야 합니다. 용접 헤드 축에 대한 튜브 축의 직각 편차는 ≤5°여야 합니다. 이러한 공차는 보수적이지 않습니다. 호 길이는 헤드 형상에 따라 고정되므로 튜브 진원도와 직각도는 360° 회전 전체에 걸쳐 호 안정성을 직접적으로 결정합니다. FYID-Feiyide는 주문하기 전에 고객이 용접 접근성 확인을 위해 실제 튜브시트 도면을 제출할 것을 권장합니다. 튜브 피치와 직선형 튜브 확장 높이는 특정 헤드 모델 형상에 대해 확인되어야 하기 때문입니다.\n확장 전 용접 공정 호환성\nFXT20 Pro + U 시리즈 시리즈는 ASME 섹션 VIII, GB\/T 151 및 기타 열교환기 제조 표준에서 요구하는 확장 전 용접 순서를 위해 설계되었습니다. 5A – 200A 범위의 낮은 열 입력 펄스 TIG와 정밀한 구역별 전류 제어가 결합되어 열 영향을 받는 구역이 최소화된 용접이 생성됩니다. 후속 튜브 확장 중에 조인트에 균열이 발생하지 않습니다. 용접 전에 팽창이 수행되면(튜브-튜브 시트 환형 간격에 공기가 갇히게 됨) 용접 중에 갇힌 가스의 열팽창으로 인해 용접 루트에 다공성이 생성됩니다. FXT20 Pro + U 시리즈의 문서 출력은 용접 후 확장 순서를 요구하는 표준 준수를 지원합니다.\n\nIndustry Applications for the FXT20 Pro + U-series U-Bend Orbital Welding System\nAI Data Center Direct Liquid Cooling — GPU Cluster Cold Plate Loop Manifolds\nHigh-density AI GPU clusters — NVIDIA H100, H200, and successor architectures operating at 300 W to 700 W per chip in rack densities of 40 kW to 120 kW — cannot be adequately cooled by air. Direct liquid cooling (DLC) systems circulate deionized water or dielectric fluid through server-mounted cold plates and connect to facility cooling distribution units (CDUs) via stainless steel tube manifolds. The manifold assembly at the server rack or CDU level consists of U-bend tube connections between the supply and return headers — exactly the joint geometry the FXT20 Pro + U-series is designed to weld.\nThe specific technical requirement in AI data center liquid cooling is leak-zero performance: a single weld failure in a rack-level cooling manifold causes coolant contact with live GPU hardware, resulting in immediate rack shutdown and potential permanent hardware damage. Manual TIG on Φ12 mm – Φ16 mm 316L stainless tube at 0.8 mm – 1.0 mm wall thickness in a production environment produces insufficient repeatability for leak-zero standards. The FXT20 Pro + U-series's 5 A arc initiation and full closed-loop servo rotation deliver consistent heat input and arc length on every joint in a production batch, with per-weld parameter logging that supports quality inspection traceability for rack-level cooling system commissioning.\nThe dual-channel integrated argon protection — external weld pool and internal tube simultaneously — produces silver-white oxide-free weld interiors on 316L stainless steel, preventing iron oxide particulate from entering the cooling loop and reaching GPU cold plate micro-channels. Compatible tube: 316L stainless steel, Φ9 mm – Φ25 mm OD, wall 0.5 mm – 1.0 mm. Application: CDU manifold prefabrication, rack-level cooling loop assembly, DLC retrofit installations.\nShell-and-Tube Heat Exchangers — U-Tube Bundle Fabrication for Industrial and HVAC Applications\nShell-and-tube heat exchangers in HVAC, refrigeration, and industrial process service use U-tube bundle configurations where hairpin-bent tubes are inserted into a tubesheet and seal-welded at the tube end. In a standard U-tube bundle for a 500 kW to 2000 kW chiller or process cooler, the tubesheet may contain 200 to 800 tube penetrations. Each tube requires a circumferential fillet weld between the inserted U-bend and the straight tube stub — a repetitive, high-count welding operation where weld quality variance across hundreds of joints in a single bundle determines the assembly's leak test result.\nManual tube-to-tubesheet welding inside a dense bundle requires the welder to reach into the tube array with a TIG torch, maintaining consistent arc length and torch angle in positions constrained by adjacent tubes. In standard equilateral triangle pitch layouts at 38 mm – 54 mm center spacing, the manual welder's access deteriorates as tube count increases and the bundle interior becomes inaccessible without removing outer tubes. The FXT20 Pro + U-series's horseshoe-shaped welding head requires only 38 mm tube center spacing (C12\/C16 models) to access and weld each joint — matching the minimum pitch of most commercial heat exchanger tubesheet layouts. One operator manages head insertion, clamping (30 seconds per joint with the elastic collet mechanism), weld cycle execution, and head removal without assistance.\nCompatible standards: ASME Section VIII Div. 1, GB\/T 151, TEMA. Compatible tube: stainless steel (304, 316L), carbon steel, titanium alloy. Tube OD Φ9 mm – Φ25 mm, combined wall ≤1.6 mm.\nCentral Air Conditioning — Evaporator and Condenser U-Tube Prefabrication\nCentral air conditioning units — water-cooled chillers, cooling towers, and precision air conditioning units in commercial and industrial buildings — use evaporator and condenser heat exchangers where stainless steel or copper-alloy U-tubes connect to straight tube headers. In high-efficiency chiller designs using stainless steel for corrosion resistance and system longevity, the U-bend-to-straight-tube joint must withstand refrigerant pressures of 2 MPa – 6 MPa and thermal cycling across the full operating range without leak initiation at the weld.\nThe FXT20 Pro + U-series replaces traditional silver brazing at these joints with orbital TIG welding, which produces a metallurgically bonded joint with significantly higher pressure capacity than a brazed joint (brazed joint strength depends on braze alloy and flux coverage uniformity; TIG weld strength equals base metal). For stainless steel tube in refrigerant service, the elimination of flux residue — a corrosion initiation site inside refrigerant circuits — is an additional quality argument for TIG over brazing. The 8-zone independent programming compensates for gravitational effects on the weld pool as the head rotates through the overhead position, producing uniform bead geometry at 6 o'clock (overhead) and 12 o'clock (flat) that brazing cannot match on small-diameter tube.\nFor precision air conditioning units serving semiconductor fabs or pharmaceutical cleanrooms — where coolant loop contamination from flux or braze particulate is a process risk — the FXT20 Pro + U-series's oxide-free weld interior is the technically correct specification. Compatible tube: 316L stainless steel, copper-nickel alloys. Tube OD Φ9 mm – Φ25 mm.\nPharmaceutical Double-Tube Heat Exchangers — GMP Hygienic U-Bend Welding on 316L Stainless\nDouble-tube heat exchangers in pharmaceutical manufacturing — used for product heating and cooling in API synthesis, fermentation, and WFI generation — consist of an inner product-contact tube and an outer utility-fluid tube, connected at the return end by a U-bend. The inner tube inner surface is a GMP product-contact surface subject to ASME BPE SF1 surface finish requirements (Ra ≤ 0.51 µm) and visual inspection for weld bead uniformity, oxidation, and crevice formation. The U-bend-to-inner-tube joint is the most difficult surface to inspect and the most likely location for bacterial harbourage if the weld is oxidized, pitted, or geometrically irregular.\nThe FXT20 Pro + U-series's dual-channel argon protection — external weld pool and internal tube inner wall simultaneously — produces the silver-white, oxide-free weld interior required by ASME BPE on 316L stainless steel without pickling or passivation in the completed assembly. The 5 A minimum arc initiation current handles the thin combined wall thickness (≤1.6 mm) of pharmaceutical-grade heat exchanger tube without burn-through, which is a rejection criterion on GMP product-contact surfaces regardless of whether the perforation causes a process leak. The built-in weld parameter printer produces per-joint documentation supporting the weld map and IQ\/OQ\/PQ validation records required for pharmaceutical heat exchanger qualification. Compatible standards: ASME BPE, FDA 21 CFR Part 11, EHEDG. Compatible tube: 316L stainless steel, Φ9 mm – Φ16 mm OD.\n\nFXT20 Pro + U-series U-Bend Orbital Welder — Frequently Asked Questions\nWhat is the difference between the FXT20 Pro + U-series U-bend welder and the standard FXT20 with C-Series heads?\nThe standard FXT20 with C5–C170 enclosed heads performs circumferential girth welds on straight tube-to-tube butt joints. The tube joint is enclosed inside the welding head, and both tube ends must be accessible for head installation.\nThe FXT20 Pro + U-series with C12–C25 U-bend heads performs circumferential fillet welds on the socket joint between an inserted U-bend tube and a straight tube — the specific \"tube-in-tube\" geometry of heat exchanger U-tube bundles and liquid cooling manifold return bends. The horseshoe-shaped head clamps over the straight tube from outside the tube bundle, requiring only 38 mm tube center spacing to access each joint. These are two different machines for two different joint geometries; they are not interchangeable.\nWhy does the FXT20 Pro + U-series use full closed-loop servo drive rather than a stepper motor?\nDuring 360° rotation of the welding head around a U-bend socket joint, two forces act against uniform rotation speed: gravity (the weld pool tends to sag in the overhead position) and cable drag (the 8-metre flexible cable creates variable torque resistance as it wraps during rotation). A stepper motor runs open-loop — it commands position but cannot detect or correct speed deviation caused by these forces. A stepper motor in this application will produce measurable travel speed variation between the 12 o'clock (flat) and 6 o'clock (overhead) positions, resulting in different heat input and bead geometry at each position.\nThe FXT20 Pro + U-series's full closed-loop servo drive with high-resolution encoder detects speed deviation in real time and corrects within \u0026lt;1 ms. The result is uniform travel speed — and therefore uniform heat input — throughout the full rotation, ensuring consistent weld bead width and penetration at every clock position on the joint.\nHow does the dual-channel argon protection work, and why is it necessary for 316L stainless steel U-bend joints?\nThe FXT20 Pro + U-series welding torch integrates two independent argon channels: one for external weld pool shielding (standard for all TIG welding) and one that delivers argon inside the straight tube to protect the inner wall of the weld zone during the weld cycle. Pre-flow time, post-flow time, and flow rate for each channel are independently programmable.\nAustenitic stainless steel (304, 316L) oxidizes rapidly above approximately 400°C. At weld temperatures (1400°C+), any atmospheric oxygen contact with the inner wall surface produces iron oxide scale — visible as blue, brown, or black discolouration — that is mechanically weaker than the base metal, creates a surface roughness incompatible with ASME BPE SF1 requirements, and in liquid cooling applications, generates particulate that can block GPU cold plate micro-channels. The integrated inner argon channel displaces oxygen from the tube interior during the weld cycle without requiring a separate back-purge setup from the tube end.\nWhat tube center spacing does the welding head require, and how do I know if my tubesheet layout is compatible?\nThe minimum tube center spacing requirements are: C12 and C16 heads require ≥38 mm center-to-center; C20 heads require ≥54 mm; C25 heads require ≥60 mm. These dimensions are determined by the physical housing of the horseshoe-shaped welding head — if the tube pitch is tighter than the minimum, the head will contact adjacent tubes during the rotation weld cycle.\nStandard equilateral triangle pitch heat exchanger tubesheets at 1.25× to 1.5× tube OD pitch will typically be compatible with the C12 and C16 heads for Φ12 mm and Φ16 mm tube. Before ordering, FYID-Feiyide recommends supplying the actual tubesheet drawing (tube OD, pitch, arrangement pattern, and straight tube extension height from the tubesheet face) for a free accessibility confirmation. Tubesheet layouts that do not meet minimum spacing can be evaluated for custom head configurations on request.\nCan the FXT20 Pro + U-series weld copper-alloy tube in addition to stainless steel?\nThe FXT20 Pro + U-series is optimized for austenitic stainless steel (304, 316L) and duplex stainless steel (2205). Titanium alloy tube is also compatible with parameter adjustment. Copper and copper-nickel alloys have significantly different thermal conductivity and melting behavior from stainless steel — copper's thermal conductivity is approximately 25× that of 316L — requiring different current, pulse parameters, and argon flow rates. While the hardware is not prevented from running copper programs, FYID-Feiyide does not supply pre-qualified Expert Parameter Library programs for copper alloys in the standard configuration. Contact the applications engineering team for copper-alloy project assessment.\nWhat documentation does the FXT20 Pro + U-series produce for heat exchanger quality records and pressure vessel inspection?\nThe FXT20 Pro + U-series logs current (peak and base), arc voltage, rotation speed, zone index, and timestamp for every weld cycle. The built-in printer generates a printed weld report per joint on demand. USB export enables unlimited data archiving. This output supports: ASME Section VIII Div. 1 weld procedure documentation, GB\/T 151 heat exchanger fabrication records, ASME BPE IQ\/OQ\/PQ weld parameter traceability for pharmaceutical heat exchangers, and per-joint records for pressure test correlation in high-pressure cooling system commissioning.\n\n튜브시트 접근성 확인, 튜브 OD 및 피치 검증 또는 프로젝트별 U-벤드 접합 평가에 대해서는 튜브시트 도면과 함께 FYID-Feiyide의 응용 엔지니어링 팀에 문의하세요. C12, C16, C20 및 C25 용접 헤드는 이미 FXT20 Pro 전원을 사용하는 작업에 개별적으로 사용할 수 있습니다. 비표준 튜브 피치에 대한 맞춤형 헤드 형상은 요청 시 영업일 기준 20~30일의 리드 타임으로 제공됩니다.","brand":"FYID-Feiyide","offers":[{"title":"FXT20 Pro \/ U12","offer_id":51647234244890,"sku":"FYID-FXT-FXT20PRO-U12","price":16560.0,"currency_code":"USD","in_stock":true},{"title":"FXT20 Pro \/ U16","offer_id":51647793791258,"sku":"FYID-FXT-FXT20PRO-U16","price":16560.0,"currency_code":"USD","in_stock":true},{"title":"FXT20 Pro \/ U20","offer_id":51647793824026,"sku":"FYID-FXT-FXT20PRO-U20","price":16560.0,"currency_code":"USD","in_stock":true},{"title":"FXT20 Pro \/ U25","offer_id":51647793856794,"sku":"FYID-FXT-FXT20PRO-U25","price":16560.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/7071\/6698\/files\/fyid-c16-u-bend-tube-orbital-welding-machine.jpg?v=1775981870","url":"https:\/\/fyid-feiyide.com\/ko\/products\/u-bend-tube-orbital-welding-machine-c12-c25-ai-cooling","provider":"FYID-Feiyide","version":"1.0","type":"link"}