NXF UNS N10276 2.4819/NiMo16Cr15W/C276 OD DN15-1200 Class 3000-9000 Nickel Alloy Forging Technology Butt Welding Latrolet

1. Raw material verification and cutting: Select carbon steel, stainless steel and other special pipe rods for processing. Verify the material type and wall thickness, recheck the mechanical properties of the raw materials, and check for cracks and inclusions. Saw the materials according to the product specifications, reserve processing margins, ensure the regularity of the blank size, and prevent processing defects from the source.

2. Heating and forging: Send the blanks to the heating furnace for constant temperature heating to eliminate the hardness stress of the material. Use the die forging process to forge the bottom saddle surface and the 45° inclined branch pipe body. The overall forging ensures the continuity of metal fibers, the dense internal structure, and improves the pressure resistance and torsion resistance, preventing cracking under pressure.

3. Heat treatment and quenching: After forging, the workpiece undergoes normalizing and tempering treatments to release the residual stress generated during forging, refine the metal grains, optimize the material toughness, prevent deformation and brittle cracking of the pipe component under long-term high-pressure use, stabilize mechanical properties, and adapt to high-temperature and high-pressure working conditions.

4. Precision machining: Use CNC lathes for precise processing, adjust the arc of the saddle base, ensure a tight and seamless fit with the main pipe; process the welding bevels at the branch pipe ends, the inner and outer diameters, control the 45° angle accuracy, polish and remove burrs to ensure the welding alignment accuracy.

5. Surface treatment: Use the shot blasting process to remove the oxide scale and forging stains on the surface, perform passivation and rust prevention treatment, improve the appearance texture, avoid rusting during storage and service, and improve the subsequent welding fusion effect.

6. Finished product inspection and storage: Conduct size verification, non-destructive testing, pressure resistance sampling inspection, check for internal cracks and gas pores, check the angle and wall thickness compliance, engrave the specification marks after verification, and only after passing the inspection can it be packaged and shipped.