Material softening represents the core functional benefit of annealing, and the FH-148 excels at delivering precisely calibrated heat treatment that achieves target ductility levels without over-softening or material degradation. By using high-frequency induction technology, heat transfers directly and efficiently to the tube material, producing consistent circumferential softening that ensures predictable forming behavior in downstream operations. Every machine leaves our Zhaoqing factory fully tested across six specialized production departments for guaranteed performance.
Softening Performance
Feihong's annealing machine delivers measurable material softening benefits that directly improve downstream forming results:
1. Uniform Circumferential Softening: High-frequency induction heating delivers even heat distribution around the entire tube circumference, ensuring consistent material ductility at all points rather than localized soft spots that could cause uneven forming results.
2. Controlled Ductility Levels: The adjustable 35-45KW power range enables precise control over the degree of softening, allowing operators to match material ductility exactly to the requirements of subsequent shrinking or bending operations without unnecessary energy consumption.
3. Through-Wall Penetration: The induction heating principle achieves effective heat penetration through tube walls, ensuring complete material softening rather than surface-only treatment that could lead to internal stress and delayed cracking after forming.
4. Repeatable Batch Consistency: Stable power output and consistent heating cycles produce uniform softening results across production batches, reducing variation in tube forming behavior and improving overall production quality predictability.
Machine Parameters
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Power & Air Supply
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3-phase 380V electricity / 0.6Mpa compressed air
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Heating Power Output
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35-45KW adjustable range for variable softening levels
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Overall Dimensions
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1700 × 1200 × 1650 millimeters (L × W × H)
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Machine Weight
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300 kilograms
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Tube Applications
This ube Softening Annealing Machine supports critical tube forming operations across multiple manufacturing sectors:
Shrinking Process Softening: During tube diameter reduction operations, work-hardening causes tubes to reach a compression limit where further shrinking becomes impossible without material damage. The FH-148 provides intermediate softening annealing that restores ductility, allowing the shrinking process to continue toward final target diameters with reduced risk of cracking or wall thinning.
Bending Process Preparation: Before tube bending operations, material softening reduces the force required for forming and minimizes the spring-back effect that causes dimensional inaccuracy. Properly softened tubes form cleaner bends with fewer surface defects and greater angle accuracy, reducing the need for post-bending correction work.
Industrial Cable Conduit: In cable manufacturing, the equipment softens metal armor and conduit tubes during production, ensuring these protective components can be formed, sized, and installed without developing structural weaknesses that would compromise their cable protection function.
Appliance Heating Element Tubes: For household electrical appliance production, the machine softens heating element tubes prior to coiling and forming operations, preserving thermal performance characteristics while enabling the complex shapes required for water heaters, cooking appliances, and other heating devices.
Factory Background
Zhaoqing Feihong Machinery & Electrical Co., Ltd. was established in 1992 and has accumulated over 30 years of specialized experience in electrical heating tube equipment manufacturing. Our deep understanding of tube material properties and forming processes comes from developing complete production solutions for a diverse customer base spanning industrial, civilian, and specialized technical applications.
Comprehensive Production Facilities: Our factory operates six dedicated workshops covering powder filling operations, pipe shrinking processes, precision machining center, mold fabrication, raw material cutting, and final machine assembly. This integrated production structure enables complete quality control throughout the manufacturing process, from initial component fabrication through final equipment testing.
Customer-Focused Development: Feihong specializes in researching and developing custom tube processing equipment with specialized configurations to meet specific customer requirements. Our development portfolio includes industrial, civilian, hot runner, aerospace, and military-grade tube equipment solutions, demonstrating our engineering capability across demanding applications and material specifications.
Quality Standards
Every tube softening annealing machine undergoes rigorous quality verification at multiple production stages:
Incoming Component Inspection: All electrical components, induction heating elements, and structural parts receive quality verification before entering the assembly process, ensuring only approved materials are used in equipment construction.
Softening Performance Testing: Each assembled machine completes functional testing with actual tube samples, verifying that the 35-45KW power range delivers the expected softening effect across different tube sizes and material types representative of customer applications.
Final Validation: Pre-shipment inspection confirms dimensional accuracy of the 1700×1200×1650mm frame, verifies 300KG weight specification, and completes full operational cycle testing to ensure equipment arrives production-ready.
After-Sales Service
Feihong supports your tube softening equipment with comprehensive services from procurement through production operation:
Factory Demonstration Visits: We welcome customers to our Zhaoqing, Guangdong facility to see the softening annealing process demonstrated firsthand and discuss your specific tube material and forming requirements with our technical specialists.
Parameter Setup Guidance: Our engineering team provides recommendations for optimal power settings and heating parameters based on your specific tube materials, dimensions, and softening requirements for shrinking or bending applications.
Custom Configuration Options: Leveraging our extensive custom equipment development experience, we can modify standard machines to accommodate special production line integration needs or unique tube softening process specifications.
Common Questions
Q: What exactly does tube softening annealing accomplish?
A: Tube softening annealing uses controlled heating to reduce material hardness and increase ductility in metal tubes that have become work-hardened during forming operations. This restored flexibility allows tubes to undergo further diameter reduction in shrinking processes or clean formation in bending operations without cracking, wall thinning, or structural failure. Proper softening also reduces spring-back in bent tubes for improved dimensional accuracy.
Q: What power and utilities does the softening machine require?
A: The FH-148 Tube Softening Annealing Machine requires a three-phase 380V electrical connection and 0.6Mpa compressed air supply. The heating power output is adjustable from 35KW to 45KW, allowing operators to select the appropriate intensity for different tube materials, wall thicknesses, and desired softening levels. These utility requirements align with standard industrial facility configurations in most manufacturing regions.
Q: Is this machine used for shrinking or bending tube processes?
A: The equipment serves both applications. For tube shrinking lines, it provides intermediate softening annealing when tubes reach their work-hardening compression limit, enabling further diameter reduction. For tube bending operations, it performs pre-bending softening to prevent cracking and reduce spring-back. The adjustable power settings accommodate the different softening levels required for each process type.
Q: What are the space and installation requirements?
A: The machine measures 1700mm in length, 1200mm in width, and 1650mm in height, with a total weight of 300 kilograms. This compact footprint allows flexible placement alongside existing tube processing equipment. Standard factory flooring is typically sufficient without special foundation reinforcement, and installation primarily requires connection to the 380V power and 0.6Mpa air supplies.
Q: Which manufacturing industries use tube softening equipment?
A: Primary industry users include cable manufacturing facilities processing metal conduit and armor tubes, and civilian electrical appliance manufacturers producing heating element tubes for water heaters and ovens. Additional users include general metal tube fabricators, contract manufacturing shops, and specialized producers making tubing for industrial, aerospace, and military applications.
Q: How experienced is Feihong in tube annealing equipment?
A: Zhaoqing Feihong Machinery & Electrical Co., Ltd. was founded in 1992 and has specialized in electrical heating tube equipment for over 30 years. Our full product line includes pipe shrinking machines, powder filling machines, winding machines, pipe bending machines, annealing machines, pipe cutting machines, vehicle pipe machines, and straightening machines, all developed from our extensive tube processing expertise.
Q: Can I test my tubes on the equipment before purchasing?
A: Yes, Feihong warmly invites customers to visit our Zhaoqing, Guangdong factory to inspect our newest, best-selling, high-quality equipment and observe actual softening demonstrations. You are welcome to bring your specific tube samples for testing, tour our six production workshops, and discuss your process requirements directly with our engineering team before making a purchasing decision.
