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NXF UNS N10276 2.4819/NiMo16Cr15W/C276 OD DN15-1200 Nickel Alloy Forging Threaded Straight or Reducing Haxagonal Nipple
Super alloys have good oxidation and creep resistance and can be strengthened by precipitation hardening, solid-solution hardening and work hardening methods. They can also function under high mechanical stress and high temperatures and also in places that require high surface stability. HASTELLOY(r) C276 is a wrought corrosion-resistant alloy that resists the development of grain boundary precipitates that degrade corrosion resistance.
The following datasheet provides an overview of HASTELLOY(r) C276.
C276 Forging Threaded Straight or Reducing Haxagonal Nipple Introduction
1. Raw material pre-treatment: Select qualified billets such as Q235 carbon steel, A105 alloy steel, 304/316 stainless steel, etc. After cutting, deburring, and flaw detection, ensure there are no cracks, inclusions, etc. and that the dimensional tolerances meet the requirements before forging.
2. Heating and forging: Send the billets to the medium-frequency induction heating furnace and heat them to 1150℃ - 1250℃ (adjust according to the material), making the metal reach the austenite state and enhancing plasticity; then transfer them to the forging equipment (such as free forging hammer, die forging press), through multiple passes of upsetting, drawing, and forming processes, initially forming a straight joint shape or reducing the hexagonal contour, while refining the grains and eliminating internal pores.
3. Thread processing: Process the semi-finished products after forging through rough turning and fine turning according to ASME B1.20.1, MSS SP-83, etc. to machine internal/external threads. Some high-pressure joints use rolling technology to improve thread accuracy and surface hardness; for the non-conforming sections of the reduced hexagonal joints, they need to be processed separately by turning or milling to ensure the tolerance of the transition section ≤ ±0.05mm.
4. Heat treatment for strengthening: Select quenching + tempering (alloy steel), solution treatment (stainless steel), or stress relief annealing (carbon steel) according to the material to eliminate internal forging stresses, enhance the tensile strength, toughness, and corrosion resistance of the joint, and control the final hardness at HRC25-35 (carbon steel/alloy steel) or HB150-200 (stainless steel).
5. Finishing and inspection: Perform deburring, chamfering, and full-size inspection of the finished products (thread gauge, external/inner diameter micrometer), conduct water pressure tests (1.5 times working pressure, hold pressure for 30 minutes without leakage), ultrasonic flaw detection (detect internal forging defects), and mark qualified products for storage, and repair or scrap unqualified products.
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