Diesel to reduce 0.08/liter to create the smallest decline in ten years
On June 6, 2013, the National Development and Reform Commission issued a notice that in accordance with the current mechanism for the formation of refined oil prices, it was decided to reduce the prices of gasoline and diesel by 95 yuan and 90 yuan per ton, respectively, and measure the retail price of gasoline No. 90 and diesel No. 0 ( The national average is reduced by 0.07 yuan and 0.08 yuan per liter, respectively, and the price adjustment execution time is 24 hours on June 6 (early morning of June 7).
On March 26, China adjusted the price adjustment mechanism for domestic refined oil products. Compared with the old mechanism, the current mechanism shortened the price adjustment period to 10 working days, canceled the upper and lower 4% limit, and adjusted the oil affiliation. At the same time, the National Development and Reform Commission also pointed out that in order to save social costs, when the price adjustment of gasoline and diesel is lower than 50 yuan per ton, no adjustment will be made and the cumulative or offset will be included in the next price adjustment.
The price reduction rate of refined oil products was based on the average price of crude oil in the international market in the 10 working days prior to June 6 and considering the unadjusted amount on May 23 was determined by merger. According to statistics, from January 15th, 2009, the price of diesel fuel began to adjust frequently. Domestic oil prices have been adjusted a total of 28 times, including 16 price increases and 12 price reductions. The oil price adjustment was the fifth time that oil prices were adjusted in 2013. The latest increase in the last ten years was recorded. The reduction in oil prices this time was the smallest decline in a decade.
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
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