The CE certificate of Shaanxi Jinyou Metal Technology Co., Ltd. has come out. We sincerely seek cooperation with countries around the world. If you need this certificate, please contact me. (Cherry@jinyoumetal.com/WhatsApp: +86 13373795593).
Tensile properties are one of the main performance indicators of metal materials. Among them, parameters such as yield and tensile strength are the most representative mechanical performance indicators of metal materials, and are also important bases for stress calculation in engineering design and mechanical design.
2507 stainless steel (UNS S32750) is a super duplex stainless steel that combines the advantages of austenite and ferrite. It has high strength, excellent corrosion resistance and good weldability and is widely used in harsh environments. The following are its core features:
The processing of stainless steel bars (round bars, square bars, hexagonal bars, etc.) usually includes raw material preparation, forming, heat treatment, finishing and other steps. The specific process is as follows: 1. Raw material preparation Material selection: Common grades: 304, 316, 303 (free cutting), 416 (martensite), 17-4PH (precipitation hardening) Morphology: continuous casting billet, hot rolled billet Inspection: Composition analysis (spectrometer) Surface inspection (cracks, inclusions) 2. Hot processing (hot rolling/forging) (1) Hot rolling Heating: Heat the billet to 1100~1250℃ (austenitizing temperature) Rolling: forming round bars, square bars, etc. through multiple rolling mills Cooling: air cooling or water cooling (controlling grain size) Applicable products: large diameter bars (Φ≥20mm) (2) Forging Free forging: used for small batches and large size bars (such as nuclear power steel) Die forging: production of high-precision special-shaped bars (such as automobile crankshafts) 3. Cold working (cold drawing/cold rolling) (1) Cold drawing (Cold Drawing) Steps: Pickling: Remove hot rolling scale (HNO3+HF mixed acid) Phosphating/lubricating: Reduce drawing friction Drawing: Gradually reduce the diameter through the die (can improve the dimensional accuracy to ±0.02mm) Annealing: Eliminate work hardening (austenitic steel: 1010~1120℃; martensitic steel: 700~800℃) Features: High surface finish (Ra≤0.8μm) Applicable to small diameter bars (Φ1~50mm) (2) Cold rolling Formed by rolling...
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