GNEE hot-selling products
ASTM B861 Titanium Alloy Seamless Pipe
Ti-6A1-4V Medical Titanium Alloy Rod
GR7 GR9 Precision Titanium Alloy
Titanium Grade 1 Strip Coil
In the manufacturing and application process of titanium tubes, straightening is a very important step. To obtain high-quality titanium tube products, suitable straightening methods must be employed. This article provides a detailed introduction to several main methods for straightening titanium tubes, including tension straightening, sinusoidal straightening, and pressure straightening.
Tension Straightening
Tension straightening is an effective method for straightening titanium tubes. This method involves applying vertical tension exceeding the material's yield limit to cause plastic elongation of the titanium tube, thereby correcting its shape defects. On a tension straightening machine, tensile stress is applied to titanium tubes with wave-like defects. This tensile stress combines with the residual stress originally present in the titanium tube. In sections with greater elongation, part of the tensile stress is offset, reducing the actual deformation stress and resulting in smaller plastic elongation during straightening. In sections with smaller elongation, the deformation stress actually increases due to the accumulation of tensile stress, leading to plastic widening during straightening. Thus, under the action of tension, all parts of the titanium tube can elongate uniformly, eliminating wave-like defects.
Sinusoidal Straightening
Sinusoidal straightening is another widely used method for straightening titanium tubes. This method is particularly suitable for simple cross-section bars and pipes, such as titanium tubes and titanium rods. Sinusoidal straightening is typically performed on an inclined-roll straightening machine, which generally has more than four rolls, usually between 5 and 29 rolls. The working principle of the inclined-roll straightening machine is to continuously bend the workpiece at three points through each roll, gradually reducing the range of variation in the residual curvature of the workpiece to achieve straightening. Sinusoidal straightening is often used in combination with pressure straightening. First, titanium tubes with significant curvature are preliminarily straightened using a pressure straightening machine, followed by inclined-roll straightening. The straightening effect primarily depends on the pressure of the straightening machine and the roll inclination angle. The pressure depends on the yield strength of the alloy material and the degree of bending, while the size of the roll inclination angle depends on the diameter of the workpiece.
Pressure Straightening
Pressure straightening is another important method for straightening titanium tubes. This method involves applying pressure to cause plastic deformation of the titanium tube, thereby achieving straightening. During pressure straightening, the appropriate straightening pressure must be determined based on the degree of bending of the titanium tube and the yield strength of the alloy material. For high-strength titanium alloys with significant curvature, greater straightening pressure is required. Conversely, for low-strength titanium alloys or titanium tubes with minor curvature, smaller straightening pressure can be applied. After straightening, the titanium tubes must be inspected. Substandard workpieces should be returned for re-straightening, while titanium tubes that cannot be straightened should be sent to a tension straightening machine for further processing.
In summary, the main methods for straightening titanium tubes include tension straightening, sinusoidal straightening, and pressure straightening. In practical applications, the appropriate straightening method must be selected based on factors such as the material, specifications, and degree of bending of the titanium tube to ensure high-quality titanium tube products.
Titanium products provided by GNEE
CNC machined parts
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Machining Equipment |
10 CNC Tapping Center, 260CNC Lathes,200 auto lathe,2 MAZAK five axis CNC, etc. We increase about 10 lathes every month |
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Processing |
Turning, Milling, Drilling, Tapping, Knurling,Wire EDM ,Grinding,Engraving,Knurling,etc. |
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Tolerance |
+/-0.005mm |
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Material Workable |
Copper,Steel, Aluminum, Brass, Stainless Steel, Titanium, Plastics (PEEK,ABS, Teflon,Acrylic , Delrin, PP, PMMA, PC, POM, |
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Surface Treatment |
Nickel Plating, Anodizing, Chorme Plating, Brushing, Polishing, Blacken, Powder coating, Sandblasting, de-buring, |
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Drawing Format |
JPEG, PDF, DWG, DXF, IGS, STEP, CAD |
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MOQ |
No MOQ Required, 1 PC is fine for us. |
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Lead Time |
1-30 days accordingly to your orders. |
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Quality System |
100% inspection before shipment, (CMM, Projector, Gauge and other inspection tools) |
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Size |
Customization |
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Standard |
OEM/ODM |
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FOB Port |
Xiamen,China |
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Pay ment |
50% T/T in advance,50 % before shipment . Accept T/T L/C ,Escrow,paypal,Western Union |
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Packing |
Carton box, wooden case, pallet, etc. |
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Shipping |
By sea,by air,by DHL ,UPS, FedEx, TNT or EMS,ect. |
Titanium tube
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Name |
Titanium Tube & Pipe |
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Material |
Pure Titanium/ Titanium Alloy |
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Standard |
GB/T 3624,GB/T 3625,GB/T 26057
ASTM B337,ASTM B338,ASTM B861,ASTM B862 JIS H 4630 |
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Common Grade |
National standard grades: TA1, TA2, TC4, TA9, TA18, TA10 |
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Length: 50-6000mm or according to customer requirements |
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Outer diameter: 3-300mm or according to customer requirements |
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Wall thickness: 0.2-5.5mm or according to customer requirements |
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Section shape |
Round / Square/Oval/Spiral/Bar |
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Surface |
Bright annealing, Pickling,Polishing |
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Titanium rod
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Material
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Pure titanium and Titanium alloy
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Titanium Grade
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GR1/GR2/GR3/Gr4/GR5/GR7/GR9/GR12/Gr5Eli/Gr23
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Standard
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ASTM B348/ASME SB348, ASTMF67, ASTM F136, ISO-5832-2(3),AMS 4928 etc
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Shape
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Titanium round rod/bar, Titanium square rod/bar,Titanium flat rod/bar
Titanium rectangle rod/bar, Titanium hex rod/bar |
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Diameter
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1-300mm,customizable
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Length
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50mm-6000mm,customizable
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Tolerance
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h6~h13 H10~H13
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Surface
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Bright/Polished/ Machined
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Main Technique
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Hot Forged; Hot Rolled; Cold drawn; Straighten etc
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Heat Treatment
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Usually are Annealled,but Solid Solution & Aging can be also OK
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Material Milling Certificate
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According to. EN 10204.3.1
Including Chemical composition and Mechanical property |
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Application
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Metallurgy, Electronics, Medical, Chemical, Petroleum, Pharmaceutical, aerospace, etc.
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Titanium sheet/plate/strip
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Grade |
GR1,GR2,GR3,GR5,GR6,GR7,GR9,GR11,GR12, etc. |
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Standard |
ASTM B265,ASTM F136,ASTM F67,AMS4928 |
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Size |
0.5-5.0mm x 1000mm x 2000-3500mm (Thickness x Width x Length) |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Supply status |
M (Y/ R/ ST) |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technics |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Payment terms |
T/T, L/C, D/A, D/P, Escrow, Western Union, PayPal |
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Certificate |
ISO 9001:2008; The third test report; TÜV Rheinland; |
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Delivery time |
7-15days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
Titanium wire
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Wire Shape |
Round Wire |
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Diameter Range(mm) |
0.1-2.5 |
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Standards |
ASTM F2063,GB 24627 |
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Diameter Tolerance |
±0.001mm |
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Surface Finish |
Black Oxidized, Lightly Oxidized, Bright, Ultra Bright, Polished, Clean |
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Delivery Condition |
Straightened superelastic , Cold-worked |
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Supply Form |
Spool wound, Straight |
About Us
GNEE is a trusted exporter of high-purity titanium raw materials. We utilize advanced forging and precision CNC machining to ensure superior product quality. Every shipment is guaranteed through a rigorous pre-shipment inspection process, verifying chemical composition, mechanical properties, and dimensional accuracy to meet global standards.
Email:sale@gneemetal.com
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