The second half of the petrochemical market runs high
In CNC turning, a chuck (or specialized clamp) holds bars of material and, as they are rotated, a tool is fed to the piece to remove material to create a specific shape. A turret, which holds a group of tools, is programmed to move along the work piece in three different axes of motion to shape the material according to the assigned specifications.
Since CNC turning involves removing material from a work piece, it`s considered a [subtraction machining" process. It is done on a lathe machine, which can be used on all types of material, from wood to metal to plastic. It can also be done on a mill or a drill press.
Turning is primarily used to create cylindrical parts. It can be completed on the outside or the inside of a work piece, which is known as boring. The process can also be used to conduct various other operations, including:
· Grooving: Cuts grooves or creates narrow cavities in work pieces.
· Taper turning: Creates a gradually decreasing diameter in a cylindrical shape.
· Drilling: Produces round holes, which are typically for screws and bolts.
· Facing: Cuts a flat surface perpendicular to the axes of the milling cutter.
· Parting: Separates one part of the work piece from another.
· Knurling: Creates vertical, horizontal or crossing lines on the work piece.
· Threading: Makes grooves that can be screwed into other objects.
CNC Turning process
l Creating a digital representation of the part in CAD
l Creating the machining code from the CAD files
l CNC lathe setup
l Manufacturing of the turned parts
Capabilities
Typical
Feasible
Shapes:
Thin-walled: Cylindrical
Part size:
Diameter: 0.02 - 80 in
Materials:
Metals
Ceramics
Surface finish - Ra:
16 - 125 μin
2 - 250 μin
Tolerance:
± 0.001 in.
± 0.0002 in.
Max wall thickness:
0.02 - 2.5 in.
0.02 - 80 in.
Quantity:
1 - 1000
1 - 1000000
Advantages:
All materials compatible
Disadvantages:
Limited to rotational parts
Applications:
Machine components, shafts, engine components
Suitable Materials for Turning
In turning, the raw form of the material is a piece of stock from which the workpieces are cut. This stock is available in a variety of shapes such as solid cylindrical bars and hollow tubes. Custom extrusions or existing parts such as castings or forgings are also sometimes used.
Turning can be performed on a variety of materials, including most metals and plastics. Common materials that are used in turning include the following:
l Aluminum
l Brass
l Magnesium
l Nickel
l Steel
l Thermoset plastics
l Titanium
l Zinc
When selecting a material, several factors must be considered, including the cost, strength, resistance to wear, and machinability. The machinability of a material is difficult to quantify, but can be following characteristics:
l Results in a good surface finish
l Promotes long tool life
l Requires low force and power to turn
l Provides easy collection of chips
Cnc Turning,Cnc Mill Turn,Cnc Milling And Turning,Precision Cnc Turning Suzhou FCE precision electronics Co., LTD , https://www.sjfukeyifcesz.com
In the second half of this year, supported by high oil prices in the international market, the prices of major petrochemical products will still operate at a high level in general. However, due to downstream demand and related products, prices of different varieties will rise or fall. The factors affecting the petrochemical market in the second half of the year are mainly in the following five areas:
First, the high oil price in the international market will still play a certain role in supporting the price of petrochemical products. In recent years, the production capacity of global refinery equipment, especially clean gasoline, has grown slowly, making the supply of gasoline demand relatively tight during the peak period. Therefore, it is expected that in the July-August month, oil prices in the international market may still rise by a certain extent due to the tight supply of gasoline and the decline in inventories. At the same time, the increase of severe weather in the summer will also have a greater impact on offshore oil production and transportation. Moreover, speculative funds will use the panic mentality caused by severe weather information to ignite oil prices in the international oil market, and promote oil prices in the international market. In the short term there has been a significant increase. In the autumn, international oil prices will fall, but supported by demand, oil prices will not drop too much. In winter, driven by the increase in heating oil, international oil prices may rise again. Therefore, in general, oil prices in the international market will remain high in the second half of the year, which will have a certain role in supporting petrochemical prices.
Second, the extensive application of petrochemical products and the overall strong demand will also support the high price of petrochemical products. At present, China's economy is in a period of rapid development, and the demand for petrochemical products is strong in industries such as construction, textiles, electronics, and automobiles. In 2006, China produced 25.29 million tons of synthetic resin, an increase of 17.6% over the previous year. However, it still imported 23.93 million tons of synthetic resin; domestic production of some synthetic fiber monomers was less than 50% of the demand, which also required large amounts of imports. These will support the high price of petrochemical products in the long run.
Third, the production and operation of downstream enterprises also have an important influence on the price of domestic petrochemical products. According to data released by the Statistics Bureau, in the first five months of this year, the chemical fiber manufacturing industry realized a profit of 5.12 billion yuan in the downstream industries of petrochemical products, which was 3.18 times the same period of last year; the rubber product industry realized a profit of 6.07 billion yuan, an increase of 56.44 percent over the same period of last year. %. From the output point of view, in the first five months of this year, the production of chemical fiber increased by 17.9% year-on-year, and the tire production in rubber products increased by 24.9% year-on-year, both maintaining a relatively rapid growth momentum. This will increase the related petrochemical products to some extent. Demand, and support its price to maintain a high level. However, in other downstream industries, the plastic products industry realized a profit of 11.42 billion yuan, an increase of 29.48% over the same period of last year. The increase was not only lower than that of chemical fiber manufacturing and rubber products, but also lower than the average level of industrial enterprises in the country. From the perspective of output, in the first five months of this year, the output of plastic products increased by only 14.2% year-on-year, which is also lower than that of chemical fiber manufacturing and rubber products. The relatively poor production and operation conditions will make raw material purchases of plastics processing companies more cautious, which will, to a certain extent, inhibit the continued rise in prices of petrochemical products such as polyethylene and polypropylene.
Fourth, the effect of export tax rebate policy gradually emerged, which may exert downward pressure on the prices of some petrochemical products. The export tax rebate rate adjustment will reduce the export tax rebate rate for plastics, rubber and its products to 5%. According to customs statistics, in the first five months of this year, China's exports of plastic products reached 2.929 million tons, equivalent to a quarter of the total output of plastic products in the country in the first five months. After the export tax rebate rate is lowered, the cost of downstream enterprises will increase and profits will decline, which will have a big impact on the demand for petrochemical products. In particular, petrochemical products such as PVC, which have excess capacity in individual countries, will have a greater impact, and their prices may slow down in the second half of the year. Fall back.
Fifth, the continuous increase in production capacity will also affect the price of some petrochemical products to some extent. In recent years, due to the sharp increase in the price of petrochemical products, some petrochemical production plants have been built in China, and the production capacity of some petrochemical products has increased significantly. According to relevant data, China’s annual polyethylene production capacity has increased from about 3 million tons five years ago to about 6 million tons, and only 1.55 million tons of capacity was added last year alone, and about 7 million will be built in the next few years. Ton capacity device. In 2006, several large-scale polypropylene production plants newly built in China were designed with an annual production capacity of nearly 1.5 million tons. These units will be put into operation from this year. If these capacities are converted into production, they will have a significant impact on the domestic market and prices of related petrochemical products in the future.
What is CNC Turning
Solid: Cylindrical
Alloy Steel
Carbon Steel
Cast Iron
Stainless Steel
Aluminum
Copper
Magnesium
Zinc
Composites
Lead
Nickel
Tin
Titanium
Elastomer
Thermoplastics
Thermosets
Very good tolerances
Short lead times
Part may require several operations and machines
High equipment cost
Significant tool wear
Large amount of scrap
