- There is almost no plastic deformation before the cleavage fracture, and there is no or little shear lip on the edge of the fracture. The fracture surface is generally perpendicular to the direction of the maximum normal stress. The macroscopic topography of the cleavage fracture is a crystalline facet, "radial" or "herringbone" pattern.
Crystalline facets: The crystal faces on the cleavage fracture appear macroscopically in a random orientation. When turning the fracture under the illumination of light, a lot of sparkling facets are shown in Figure 4-1.
Figure 4-1 12Cr1MoV 980 °C normalizing + 720 °C tempering impact fracture"Radiate" or "herringbone" pattern: Another macroscopic feature of the cleavage fracture is radial streaks or herringbone stripes. The convergence of the radiation fringes and the tip of the herringbone are the source of the crack. The “herringbone pattern†reflects the material properties and loading speed. When the mechanical properties of the material are the same, the higher the loading speed, the more obvious the "herringbone pattern". When the loading speed is the same, the greater the material brittleness, the more obvious the "herringbone pattern". In the actual production, the cleavage fractures produced by the sharply cut or cracked metal parts at low temperatures are mostly macro brittle. See Figure 4-2.
Figure 4-2 1033 angle steel fracture herringbone pattern
We diviided the led light according to the using eviiroment. Most of our product is the commercial LED Lighting
Commercial lighting is a term used to describe lighting that is used in commercial spaces, including auto dealerships, distribution centers, churches, factories, offices, and warehouses. Unlike residential lighting, commercial lighting is made to withstand more abuse and has a longer lifespan.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
Ufo Highbay Light,Industrial Led High Bay Light,Led High Bay Lights 200W,Ufo Led High Bay Light 150W
Jiangmen Dilin Lighting High-Tech Co., Ltd. , https://www.jmdilinlighting.com