Under the spread of the new crown epidemic, after Americans experienced life and death, they set off the largest "resignation wave" in history, and the number of resignations broke the highest record since statistics began in 2000. Since April this year, more than 4 million people in the United States have voluntarily resigned each month. In August, the number of resignations exceeded 4.27 million, and in November, it rose to 4.4 million. The operation of society is linked. The large number of departures in the United States has led to a large shortage of labor; and the shortage of a large number of labor has directly led to the supply chain crisis in the United States; the supply chain crisis has directly affected prices and prices in the United States. The economy has a direct effect on people's lives.
The economic downturn will affect the market demand for GH4049 alloy rod.
GH4049 is a Ni-Co-Cr-based deposition hardening deformation superalloy, the application temperature is lower than 950℃. The alloy has good oxidation resistance below 1000°C, and high high-temperature compressive strength below 950°C, which is suitable for the production of natural gas turbocharger blades with operating temperatures ranging from 850°C to 950°C. The key equipment includes hot rolling and forging bar stock and free forging turbine blades.
Application and characteristics of GH4049 superalloy
Alloys have been used to make aircraft engine turbine blades and other high temperature load-bearing parts. After a long period of manufacture and application, it has become one of the most widely used foliar raw materials.
Compared with similar nickel-based alloys in the same way, the alloy's hot working process plasticity is weak, but after electroslag remelting or vacuum pump electric remelting, its production and processing plasticity can be improved, with fracture at 1000 ° C ~ 1170 ° C The toughness is increased by 1~3 times.
Heat treatment process rules and regulations:
1200℃±10℃ heat preservation for 2 hours air cooling+1050℃±10℃ heat preservation for 4 hours air cooling+850℃±10℃ heat preservation for 8 hours air cooling, HB363~302
GH4049 is a nickel-based aging-strengthened alloy with high high temperature strength below 950 degrees, small notch sensitivity, good oxidation resistance and fatigue strength, but poor hot working plasticity. Vacuum consumable or electroslag remelting can improve its heat processing plasticity
GH4049 alloy has been used to make aero-engine turbine blades and other high-temperature load-bearing parts. After long-term production and use test, it has become one of the most widely used blade materials.
The new process of constant temperature toughness rolling is applied to the production practice of GH4049 alloy hot-rolled bars. The production process and product quality are relatively stable, and the products can meet the needs of the market in large quantities, so they have been well evaluated by users, both economic and social benefits. relatively significant.
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