Insect traps correctly installed and main troubleshooting Insect trap lamp is a special lamp that can emit near-ultraviolet rays. There are mainly two kinds of direct current and alternating current. Insect traps mainly consist of light traps, converters, light stands, switches, rain covers, lamp holders, and glass. DC trap lights are characterized by their ability to be used in fields that do not have power, and AC traps must have AC power to use. 1 Insect trap using DC trap lamp, when installing the battery, firstly recognize the positive and negative poles on the battery box, and then install the dry battery correctly. The dry battery must not be reversed, and then turn on the power switch. Insect traps have two switch levels. When they are dialled upwards, they work 4 hours each night. They can use 18 days. When dialing, it can be used for 10~12 days. When you use it, you can determine the opening level as needed. If the power is insufficient at the end of dry battery use, the switch can be pulled down. The basin below the trap lamp should use a larger model, and the water should be sufficient. After the power is turned on, if there is a slight noise from the converter and the lamp is off, immediately turn off the power and check if the two plastic wires of the lamp holder are loose or glued. Exclude the power before turning it back on. 2 Insect trap main faults and elimination When the insect trap lamp is in use, if the insect trap lamp does not shine, it can be checked and eliminated according to the following methods and steps: If the line voltage is insufficient, replace the battery of the semiconductor insect trap lamp or adopt circuit voltage regulation measures. If the wire breaks, use a test pencil to test the break and switch it on. If the starter is damaged, use a test pencil to test if the lamp holder has electricity, and replace the starter to resolve. If the insect trap lamp is not lit due to damage to the filament of the insect trap lamp, the lamp tube can be shaken in the ear. If the two ends of the lamp tube can hear the sound of "click", it proves that the filaments at both ends of the lamp tube have been If it is damaged, the trap lamp should be replaced; if only one end of the lamp emits a sound, the two legs at one end of the broken wire can be wound with steel wire for several rounds and can still be used. If the silicon triple tube is damaged or the ballast is damaged, it only needs to be replaced; if the line is in poor contact, connect the connections after inspection. If the light trapping lamp is in use, it will be dark and beating constantly. The main reason is that the voltage is too low and the voltage should be adjusted. If the insect trap lamp is red at both ends and does not jump up, the starter is found to be damaged and should be replaced; if the starter capacitor is broken down, the capacitor should be replaced, or the starter housing removed. Continue to use after the capacitor.
Sheet Metal Fabrication
Definition of sheet metal fabrication
Sheet Metal fabrication is the creation of useful metallic parts and structures by the application of multiple fabrication processes. Sheet metal fabrication is basically a broad term that involves various complex processes like cutting, forming, bending, welding, machining, and assembling. The instructions include below: materials, processes, and tools required for sheet metal fabrication.
Types of Sheet Metal Fabrication Materials
The choice of metal depends on the final use of the fabricated parts.
Common fabrication processes:
· Carbon Steel
· Stainless Steel
· Aluminum
· Bronze
· Copper
· Brass
· Aluminized steel
· Galvanized steel
Types of Metal Fabrication Processes
The journey to the final product from raw sheet metals proceeds through various sheet metal fabrication processes. All the sheet metal fabrication processes can be grouped into the following three categories:
· Cutting
· Deformation
· Assembly
Sheet metal fabrication: Cutting
ii. Water jet cutting
iii. Plasma cutting
Sheet metal fabrication: Forming or Deformation
Bending: Sheet metal bending is one of the most popular deformation processes. A machine known as a Press brake is used to bend sheet metals into V, U, or other complex shapes. With an increase in gauge thicknesses of sheet metals the force required to bend increases.
Stamping: In the stamping process, a hydraulic or mechanical stamping press equipped with a tool and die is used to perform specific tasks like curling, drawing, embossing, flanging, etc
Hemming: Hemming is a process by which the edges of sheet metal are folded over itself or another piece of sheet metal to create a rounded edge. In the sheet metal fabrication process, two types of hemming processes are widely involved. They are roll hemming and conventional die hemming. Conventional hemming is used for mass production. A hemming roller is used for roll hemming.
Spinning: Spinning is a metal fabrication process where a lathe machine is used to rotate the sheet metal against a tool to produce conical or cylindrical shapes.
Sheet metal fabrication: Assembly
Assembly is basically joining sheet metal components produced using above mentioned cutting or bending processes. The common sheet metal assembly process consists of joining by Welding and joining using fasteners.
Welding: In the welding process, sheet metal components are joined together by melting sections with the application of heat to form a solid connection. There are various processes available that are used to weld sheet metals.
Joining using Fasteners: Similar or dissimilar sheet metal parts can easily be joined using fasteners like bolts, screws, rivets, etc.
Brazing: Brazing is a process similar to welding that operates by melting a filler without melting the sheet metals.
Adhesives: Adhesives can be used to hold metal sheets together in conjunction with other joining methods
Advantages and Disadvantages of Sheet Metal Fabrication
As sheet metal fabrication covers a wide area of techniques and methods, the advantages and limitations will vary depending on the process used during fabrication.
Benefits:
i. Sheet metal fabrication is fast and can produce high-quality components.
i. A large number of processes are available with wide range of materials
ii. High strength to weight ratio for sheet metal fabricated parts.
Disadvantage:
i. Each fabrication process has their own limitations.
ii. High initial cost for set up of equipment and tools.
iii. Requirement of skilled labors for each process.
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