Five Tips for Troubleshooting Special Vehicles
Special-purpose vehicles are prone to failure due to their poor working environment for a long time. How to troubleshoot effectively, let's take a look at the experts of Hubei Xiagong Power Group:
Fault 1: Brake is not working and braking is slow. This kind of failure is mainly caused by the reasons such as the brake shoe friction plate and the brake drum gap is too large, the air chamber is damaged, the air system leaks or emergency relay valve failure and other reasons, under normal circumstances, the right medicine, to adjust
Fault II: Tire swing during driving. Tire swings are generally caused by the fact that the nuts are not tightened after the tires are installed, the axle bearings are sintered, bent, and the clearance is too large. We only need to tighten the nuts that loosen the wheels. It is important to note that when tightening the nuts, To gradually tighten each nut cycle, avoid a nut one-off tightly in the end, if the bearing is a problem, then it is necessary to modify the situation, replace the bearing lubricants, adjust the axis of the axle and the frame center line perpendicularity, serious Only replace the bearing.
Fault 3: Shake the handle too much. If this phenomenon is new, it may be caused by the lack of lubricants, which can only be solved by replacing new lubricants. Another condition may be caused by eccentricity or wear of gears. If the parts are disassembled and checked, they can be solved. If the above method is not correct, then the situation is a bit complicated, it is likely that the bearing damage or screw thread damage caused by the need to replace the bearing or screw to resolve.
Brake shoe friction plate and brake drum clearance, change the air chamber, check the leak location, repair or replace parts or replace the emergency relay valve can be eliminated, so that the car to restore a good operating condition.
Fault 4: The brake cannot be released or released slowly. This type of failure is generally caused by low system pressure, inability to restore the brake spring, damage to the brake spring, blockage of the pipe, poor operation of the emergency relay valve or quick release valve, or improper travel of the brake cylinder stroke. The driver's friend only needs to calm down, carefully touch the row, correspondingly increase the pressure of the air brake system to the specified value, replace the spring, replace the relay valve or quick release valve or re-adjust the stroke of the brake air chamber to eliminate the fault. Now.
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.
Sheet Metal Fabrication,Custom Sheet Metal Fabrication,Precision Sheet Metal Fabrication,Stainless Steel Sheet Metal Fabrication
Suzhou FCE precision electronics Co., LTD , https://www.fukeyifcesz.com