Archive for the Industrial Category

Forging temperature and deformation jointly control dynamic recrystallization, γ′/δ precipitation and the 650 °C tensile, stress-rupture and creep properties of Inconel 718 (GH4169) turbine disc forgings, as shown in this Gleeble-based process–structure–property study.

A Φ2440 mm GH4169 (Inconel 718) turbine disc — China’s largest nickel-based superalloy disc forging — produced under a coupled FEM + microstructure model: heating and soak-through, transfer heat loss, dynamic recrystallization, cooling evolution, and press load held within 800 MN, validated against dissected grain sizes.

A Φ180 mm 2Cr10NiMoVNb bar failed ultrasonic testing on a mixed-grain coarse grain ring at R/2 — spurious echoes from the structure, not a defect. Macro/micro examination, 950–1010 °C normalizing trials and the 1000 °C × 3 h production fix.

Cr8 Cold-Roll Steel + 0.6% Niobium: a 40% Drop in Roll Wear, Validated by JMatPro A Sendzimir 20-high mill second intermediate roll in Cr8 steel, quenched at 1090–1120 °C, tempered at 550 °C × 3 h, and micro-alloyed with 0.6% Nb, sees its wear volume fall 40%

The Non-Linear Math Behind Every Cold Roll Reject Five percent chromium forged cold work rolls look like a mature, solved problem. The defect-rate equation that governs them is not — and that equation quietly decides who is buying 5% scrap and who is buying 0.5% scrap. A

The Hidden Red Line at 1230°C A first-principles look at the homogenization ceiling of as-cast 6Cr5Mo2V1 tool steel — and why the textbook “100–200 °C below solidus” rule is misleading. In a recent diffusion-annealing study on as-cast 6Cr5Mo2V1 electroslag-remelted tool steel, the as-cast structure (dendritic M7C3 and MC

316LVV: China’s Ultra-High Purity 316L Stainless for Semiconductor Fab Equipment By Harris · FUSHUN METAL · Technical note for steel buyers Steel grade, positioned up front. 316LVV is not a registered international grade — it is a Chinese mill designation for an ultra-high purity version of the

Reading a Mill NDT Report: How GB/T, ASTM and EN Standards Map to Each Other By Harris · FUSHUN METAL · Technical note for steel buyers Viewpoint, stated up front. A Chinese mill’s MTC will almost always list GB/T, JB/T or NB/T standard numbers in the testing

Incoloy 926 / 1.4529 / N08926: A 1780 Hot Strip Mill Just Proved China’s Super-Austenitic Window Is Open When Anyang Steel’s No. 2 continuous-rolling shop reported its first successful run of S38926 on a 1780 mm hot-strip line, most trade coverage framed it as “one more high-end