Forged Entire CNC Machined Francis Runner Introduction
Forged Integrally +100% CNC Machining Francis Turbine Runner
1. GETAI has improved the manufacturing procedure of Francis turbine runner which suffered from the problems such as the cavitation and abrasion, welding seam cracks between crown, band and vanes, block worn off from vane etc. The whole Francis runner is forged integrally followed by entire CNC machining to eliminate tiny blowholes and slag inclusions existed on passage surface which accelerate cavitation and abrasion, and solve the potential risk existed by unreleased stress left after welding. The Francis turbine runner service life prolonged consequently.
In the case the high head Francis runner with long and narrow passageway which is hard for entire CNC machining or the runner size exceeds the forging range which can not be forged integrally, GETAI applied a procedure by dividing the runner to two parts which consisted of crown with half vanes and band with rest half, both two parts can be forged integrally with entire CNC machining and welding assembled in final. The welding applied to the middle of vane, where is convenient for single pass welding without touch of potential crack area, the operation security and service life are improved largely.
Samples exhibited below is for forged integrally+100% CNC machined Francis turbine runner (half part) which finished by our five axis linkage CNC machine.
Integrally forged and
CNC machined Francis runner sample
Sample of forged and CNC machined
Francis runner band with partial vane
Sample of Francis crown and
band welded assembly with partial vane
2. Machining vedio for the Forged entire CNC machined Francis runner.
3. ISO 9001 Quality Management system is carried out to ensure better management control
4. Advanced CFD, FEA technic is utilized in the designing process to ensure better technical solution.
5. CAE casting simulation is adopted for the produciton of casting parts, this advanced and reliable process plan could help effectively improve product quality.
6. All raw material strictly conform to international standard, key component such as runners, guide vane is Forged and entire CNC machined.
Chemical Composition for ASTM A473 S41500 and ASTM A743 CA6NM（%）
|ASTM A473 S41500||≤0.05||≤0.60||0.5-1.0||≤0.030||≤0.030||11.5-14.0||3.5-5.5||0.40-0.80|
Mechanical Property for ASTM A473 S41500 and ASTM A743 CA6NM
|Material No.||σ0.2(Mpa)||σb(Mpa)||δ5(%)||ψ(%)||Akv (J/cm2)||HB|
|ASTM A473 S41500||≥620||≥795||≥15||≥45||≥50||≤295|
7. State of the art machining and testing equipment, as well as licensed professional engineers all combined to help guarantee better product precisioness.
8. All product is subject to strict inspection according to international standards and client special requirements.
We could produce product according to inerntational standard and special client requirements. The standard we use include but not limited to the following:
IEC Standard fro equipment and testing
CCH70-3 Specification for inspection of steel castings fro hydraulic machines
EN (UNI-DIN) Standards
ISO 1940-1-2003 Mechanical vibration-Balance quality requirements for rotors in a constant (rigid) state
ASME-Bioler and Pressure Vessel Code
- Section II - Material Specifications Part A-Ferrous
- Section VIII - Pressure Vessels-Division 1
- Section IX - Welding and Brazing Qualifications
We dedicated to develop the best products and solutions for you in our role as specialists, to help unleashinging your potential and generate more power with our customized solutions!
Hydro Power Plant assessment
Inspections and offer customized solution
Offer Spare parts
Consulting, installation guidance, site testing ect. field services
More than 20 years of successful hydro turbines design,production and exporting experience, Long time certified suppliers for world renowned companies such as: MITSUBISHIHITACHI POWER SYSTEMS, LTD.(MHPS), Toshiba, GE, BHEL, ALSTOM, DEC,HEC, CHD ect.
Continuous investment in both state-of-the-art facilities and R&D support us to be strong and powerful in the market, high performance versus price ratio product , we could help achieving your goals within budget and time frame.No cheating, No excuse, No purposed delay is what we always try to guarantee our partners!
We got many national patents for our products, and all products conform to EU, ASTM, ISO, IEC, JIS etc. international standards.
Quick and professional response to your request for drawings, quotations, and answers about any technical problems. We do our best to realize our commitment to you that: what you see and hear is what you will get, whatever customer you are, big or small. In the mean time, we implement a quality information rapid feedback system and a standard parts management system.
Provide complete support at every step of your project, You will rely on a solid experienced partner that will be able to adapt to every situation and to help you take on all challenges that are part of any hydroelectric project. We dedicated to help unleashing your potential and generate more power with our customized solutions!
Reliable, Easy to work with, Knowledgeable and we add value, though we are not perfect, but we are learning and improving, we love what we do, we appreciate all the valuable customer to give us a chance to know and see if we are the Mr. RIGHT for each other. Right here waiting for YOU to start a rewarding journey together!
Are you trading company or manufacturer ? Is OEM service available?
A: We are a factory with more than 20 years of successful hydro turbine manufacturing experience, OEM service is available.
How long is your delivery time?
A: Generally it is 120-270 working days upon contract signing and receipt of prepayment.
What parameters are needed for the turbine generator quotation?
A: Normally we need rated water head, rated flow, rated installed capacity,voltage, frequency and rotation speed. The more information the better.
Do you offer water turbine installation service?
A: Yes. Installation service is available upon request.
What kinds of test and inspection is carried out to ensure product quality?
A: Mechanical property, chemical composition, hardness, surface roughness, Dimension check, profile check, NDT Testing ( UT/MT/RT/PT), balancing, pressure test ect, is strictly carried out according to relevant international standards.
What is the standard packing and transportation means?
Product will be packed in solid and safe sea-worthy cases, the properly packaged and marked product could be delivered to any port or site as specified in the Contract by ship, plane or truck.
What is the standard payment terms ?
Usually we accept T/T and L/C.
What kinds of guarantee provided?
Product warranty for 12 months after commissioning on site or 18 month after delivery whichever come first; We offer lifelong follow-up services for our products, and we will response to client requirements within 24 working hours.
If there is any other questions, please email me (email@example.com) or chat with me on Whatsapp/Wechat /Mobilephone: +86 135 5586 1247