According to Shang Jian, chief of the inspection department at the city's vehicle management department, the vehicle management department reads the frame number through the vehicle identification code decoder when checking the vehicle and checks whether the vehicle identification code is valid. The vehicle identification number and the engine number, the appearance of the vehicle, etc. are all important signs to confirm the uniqueness of the vehicle. Therefore, the purchase of used cars should pay attention to the following five aspects:
1. To go to a regular second-hand car trading place to buy, to prevent the purchase of stolen robbers, smuggling of suspected cars from the Internet or personal private transactions, causing trouble for themselves.
2. Carefully check the vehicle procedures, including the owner’s ID card, and confirm ownership and disposal rights of the owner and the vehicle.
3. To check the status of the vehicle, if the vehicle is seized, mortgaged, locked, etc. will affect the transfer of the vehicle.
4. It is necessary to check whether the identification of the vehicle, such as the identification number of the vehicle, the engine number, etc., is consistent with the registration on the voucher.
5. Keep your ID card and vehicle registration certificate in a safe place to prevent the transfer of some problems in the vehicle.
A plate rolling machine is a machine that will roll different kinds of metal sheet into a round or conical shape. It can be also called a [roll bending machine", [plate bending machine" or [rolling machine".
There are different kinds of technology to roll the metal plate:
Four-roller machines have a top roll, the pinching roll, and two side rolls.
The flat metal plate is placed in the machine on either side and "pre-bent" on the same side. The side rolls do the work of bending. The pinching roll holds the plate.
Three-roller machines (variable pitch aka variable geometry) have one pressing top roll and two pressing side rolls.
The three-roll variable pitch works by having all three rolls able to move and tilt. The top roll moves in the vertical plane and the side rolls move on the horizontal plane. When rolling, the top roll presses the metal plate between the two side rolls. The advantage of having the variable three roll is the ability to roll many thicknesses and diameters of cylinders.
For example; The side-rolls are what produce the mechanical advantage. With the side rolls all the way open, one has the maximum mechanical advantage. With the side rolls all the way in, you have the least mechanical advantage. So, a machine has the capability of rolling 2-inch-thick material with the maximum mechanical advantage, but a job is only 1/2 inch thick. Reduce the mechanical advantage and one has a machine that can roll from 1/2 to 2 inches thick.A plate rolling machine is a machine that will roll different kinds of metal sheet into a round or conical shape. It can be also called a [roll bending machine", [plate bending machine" or [rolling machine".
There are different kinds of technology to roll the metal plate:
.Four-roller machines have a top roll, the pinching roll, and two side rolls.
The flat metal plate is placed in the machine on either side and "pre-bent" on the same side. The side rolls do the work of bending. The pinching roll holds the plate.
.Three-roller machines (variable pitch aka variable geometry) have one pressing top roll and two pressing side rolls.
The three-roll variable pitch works by having all three rolls able to move and tilt. The top roll moves in the vertical plane and the side rolls move on the horizontal plane. When rolling, the top roll presses the metal plate between the two side rolls. The advantage of having the variable three roll is the ability to roll many thicknesses and diameters of cylinders.
For example; The side-rolls are what produce the mechanical advantage. With the side rolls all the way open, one has the maximum mechanical advantage. With the side rolls all the way in, you have the least mechanical advantage. So, a machine has the capability of rolling 2-inch-thick material with the maximum mechanical advantage, but a job is only 1/2 inch thick. Reduce the mechanical advantage and one has a machine that can roll from 1/2 to 2 inches thick.
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Jiangsu Hoston Machine Tools Co., Ltd. , https://www.haostonmachinetools.com