4J36 round steel forgings (low expansion iron-nickel alloy custom-made).
4J36 round barCustomized click on the avatar
4J36 has the following characteristics.
It has an extremely low coefficient of thermal expansion between -250 and 200.
Very good plasticity and toughness.
4J36 application field.
4J36 is used in environments where a very low coefficient of expansion is required.
Typical applications include the production, storage and transportation of liquefied gas.
Measuring and control instruments, such as temperature control devices, with operating temperatures below 200 °C.
Spiral connector bushings between metals and other materials.
Bimetal and temperature-controlled bimetal-membrane frames.
Shadow Hood - Tempering mould for CRP components in the aerospace industry.
Below -200 man-made *** and missile electronic control unit frame.
Auxiliary electron tubes in the electromagnetic lens of the laser control device.
Based on the mechanical model, considering the influence of wear on the milling force in the actual machining, the width of the flank wear zone was used as the measurement standard, and the cutting force model of the 300m steel end mill was established. Side wear settings. The side shear coefficient was calibrated by the wear experiment of alloy NM450 wear-resistant steel plate, and the side shear coefficient model considering the influence of shear parameters was established. The heat dissipation and temperature evolution of 4J36 invarin steel during fatigue damage were studied, and the mechanical properties and fatigue properties of 300M steel under heat treatment were tested. The test results show that the tensile properties and fatigue properties of 4J36 invar steel after heat treatment are significantly improved. Because of its superior mechanical, physical and chemical properties, it is widely used in the aviation field, especially in aircraft landing gear and other cargo components. However, its height, high hardness, high toughness and other characteristics also bring difficulties to cutting processing. There are shortcomings in cutting processing, such as large cutting force, high cutting temperature, serious wear and low processing efficiency. Therefore, it is an urgent topic to study the cutting process of alloy NM450 wear-resistant steel plate in depth to improve processing efficiency and reduce processing costs. The bright annealing furnace should be closed and isolated from the outside air.