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Northeastern University has developed a new low-pressure vacuum carburizing heat-treatment process, making aerospace engine bearings more robust and durable.

Northeastern University has developed a new low-pressure vacuum carburizing heat-treatment process, making aerospace engine bearings more robust and durable.

Aerospace engine bearings are critical components of aircraft. Bearing materials form the foundation for ensuring the safety and reliability of aeroengines, while the manufacturing processes—particularly heat treatment—directly influence the engine’s overall performance. On March 26, reporters learned that Wang Haojie, a doctoral candidate in Materials Processing Engineering at Northeastern University, led an entrepreneurial team in developing a novel low-pressure vacuum carburizing heat‑treatment process that enables precise control of carbide distribution within the case‑hardened layer of bearing steels used in aeroengines. This innovative process has endowed high‑end aerospace bearing steels with enhanced strength, superior surface hardness, improved fatigue and wear resistance, extended service life, and markedly better overall performance.

30

2019

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04

Price Adjustment Information for Yonggang Industrial Wire Rod as of the 21st

Price Adjustment Information for Yonggang Industrial Wire Rod as of the 21st

Grade/Specification (mm) | Ex-factory Price | Change | Remarks ---|---|---|--- Cold-heading steel YD195 | Φ6.5–26 | 4480 | ↓250 | Tax included SWRCH (35K–45K) | Φ6.5–26 | 4610 | ↓150 | Tax included SWRCH (8A–22A) | Φ6.5–26 | 4630 | ↓150 | Tax included ML08AL | Φ6.5–26 | 4610 | ↓150 | Tax included 10B21–10B38 (C/N) | Φ6.5–26 | 4730 | ↓150 | Tax included ML40Cr | Φ6.5–26 | 4760 | ↓150 | Tax included Hard wire 45#–65# | Φ6.5 | 4570 | ↓ |

27

2018

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11

Leading green development in the nonferrous metals industry

Leading green development in the nonferrous metals industry

Over the past 40 years of reform and opening-up, while China has achieved remarkable economic success, the building of an ecological civilization and the protection of the environment have also faced significant challenges. The tension between economic and social development and environmental protection remains acute; the carrying capacity of resources and the environment is under severe strain; incidents of environmental pollution and degradation continue to occur; and ecological and environmental issues have become bottlenecks and weak links in sustainable development. For example, the electrolytic aluminum industry as a whole consumes 500 billion kilowatt-hours of electricity annually, burns 180 million tons of standard coal, and generates over 450 million tons of carbon emissions, posing formidable tasks for environmental protection and emission reduction. China’s economy has shifted from a phase of rapid growth to one of high-quality development, with green development…

30

2018

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10

Shenyang Spring Steel Market Quotation as of August 31, 2018

Shenyang Spring Steel Market Quotation as of August 31, 2018

Product Name, Specification, Material, Origin, Price, Change, Remarks — Please Filter Please Filter Please Filter Please Filter Spring Steel Φ6.5–15.5 55SiCrA Xingtai 5,750 — Hot-rolled; Spring Steel Φ6.5–20 55SiCrA Jiyuan 5,440 — Hot-rolled; Spring Steel Φ6.5–26 55SiCrA Baosteel 9,250 — Hot-rolled; Spring Steel Φ6.5–26 60Si2CrA Baosteel 8,050 — Hot-rolled; Spring Steel Φ6.5–14 60Si2MnA Shagang 5,600 — Hot-rolled; Spring Steel Φ6.5–15.5 60Si2MnA Xingang 5,630 — Hot-rolled; Spring Steel Φ6…

31

2018

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