Crowbar is a kind of labor tool. It is a method of using the principle of lever to make objects that can't be moved by force overcome gravity, tilting and displacing heavy objects from the ground. Crowbar is a very useful construction tool and hardware tool. The crowbar is mostly used as an on-board tool for automobiles. It is used to correct some parts of the body that cannot be completed directly by hand. There are many different shapes. So how do you use a spudger? 　　 　　 How to use crowbar 　　 When correcting depressions, because the space inside the sheet metal is narrow and you can not use the top iron, you can get a lot of convenience by replacing it with a crowbar. The crowbar can also be used as a hand-top iron. Insert the crowbar into the recesses of various shapes or the inside of the deformed body panel from the gap, and then hit the flat surface with a hammer. At the same time, it can also be used to disperse the impact force of the hammer. At this time, the crowbar is placed on the concave or convex surface, and the hammer is hit on the crowbar to form an indirect force, which not only broadens the impact force distribution. , So that the paint will not be beaten and peeled off. 　　 　　 Crowbar features and uses 　　 The crowbar does not need to use the nailing pad during the railway maintenance operation, and can be widely used on ordinary wooden sleeper lines and wooden sleeper switches. The nailing effect is good. The crowbar improves the work efficiency and achieves the purposes of safety, time saving, labor saving and high efficiency. . Crowbar features: The product is forged from a die and is durable. It is mainly used for railway maintenance and mine development. 　　 Precautions for using crowbar 　　 1. When dialing the road, the crowbar should be inserted firmly to prevent the crowbar from slipping out and hurting people; 2. When prying up the rail pad, removing the height pad, freezing damage pad and finishing or replacing the rubber pad, it is strictly forbidden to insert your hand under the rail. 3. When using a crowbar to turn the rail, one person should operate it; when two people are required to operate, the call must be answered and the action is the same. After the rail is turned over, the crowbar should be quickly drawn out. 4. When multiple people work together, they should be under unified command, and a certain safe distance should be maintained between each other. 5. With track circuit operation, the crowbar should have an insulating sleeve to prevent mixed electricity. 6. When lifting the spikes, keep the crowbar away from the rails, do not use excessive force, pay attention to the surrounding people, and do not use hammers or crowbars to hit the crowbar . 7. The crowbar must be used firmly when lifting the spikes. It is forbidden to replace the crowbar pad with the head and wood. When there is ice and snow, pay attention to the crowbar sliding and hurting people . The above is the content about how to use the crowbar, the characteristics and uses of the crowbar, and the safety precautions for using the crowbar. Crowbar is also a tool that we often see in daily life. Crowbars include six-sided bars, round bars and flat crowbars. For objects that cannot be moved with both hands, the crowbar is a very good helper. Dome lenses are hemispheres. The two optical surfaces are an equal thickness apart, creating a naturally strong shape that gets tougher under pressure. This makes dome windows ideal for underwater environments and in applications such as camera dome ports and submersible windows.
Sapphire domes: For infrared applications we can provide sapphire domes. Sapphire is an extremely hard material with transmission of over 80% in the 2-5µm wavelength range. As with fused silica, sapphire is able to withstand extreme pressures, making it the perfect material for underwater camera and missile fairing applications.
Specifiation of our dome lens as follow: Hk9 Glass Dome Lens,Hk9 Hemisphere Domes Lens,Hemispheric Glass Dome Lens,Optical K9 Glass Dome Lens China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com
BK7 or K9L domes are used primarily in meteorology applications. BK7 offers excellent transmission from 300nm up to 2µm. BK7 is a relatively hard material, with excellent chemical durability.
UV fused silica domes ( JGS1 ): For applications operating in the deeper UV range, we offers a range of UV fused silica domes. Fused silica domes are commonly used in underwater applications at extremely high pressures.
Material:Optical glass N-BK7 , H-K9L, UV Fused Silica, Sapphire, and infrared crystal materials.
Diameter:20-350mm
Diameter Tolerance:+/-0.1mm
Thickness:>2mm
Thickness Tolerance±0.2~0.1mm
Center Deviation:3-5'
Surface quality:80/50 60/40
Coating: Antireflection Coating inside or both sides
Chamfers:0.2 x 45° typical