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| Latest Threads |
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| Why does aluminium chloride a dimer compound? |
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Posted by: toyota1515 - 08-02-2022, 08:31 AM - Forum: aluminium faq
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Aluminium has only 3 valence electrons and therefore forms three single covalent bonds with Chlorine atoms.
But AlCl3 leaves the Aluminium atom with only 6 electrons in its outer shell, rather than the desired Octet.
But each AlCl3 molecule contains three Chlorine atoms that have lone pairs of electrons uninvolved in bonding. So, a dative or coordinate bond forms from a Chlorine atom on one molecule to the Aluminium on the other. Consequently, the molecules pair up or dimerise so that each Aluminium atom has a share of eight electrons in its outer shell.
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| What is the coordination number of aluminium chloride in the liquid and gas phases? |
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Posted by: toyota1515 - 08-02-2022, 08:25 AM - Forum: aluminium faq
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Aluminium chloride (AlCl3) is the main compound of aluminium and chlorine. It is white, but samples are often contaminated with iron(III) chloride, giving it a yellow color. The solid has a low melting and boiling point. It is mainly produced and consumed in the production of aluminium metal, but large amounts are also used in other areas of chemical industry. The compound is often cited as a Lewis acid. It is an example of an inorganic compound that "cracks" at mild temperature, reversibly changing from a polymer to a monomer.
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| What is the control design of the electric furnace？ |
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Posted by: wyd1014 - 08-02-2022, 02:31 AM - Forum: Knowledge & Technique
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In the traditional electric furnace temperature control system, most of the main circuits use AC contactors to control the power supply of the electric furnace, and the furnace temperature is controlled by a combination of temperature instrument monitoring and manual adjustment. Vacuum Heat Treatment Of Aerospace Aluminum Alloy MaterialsAlthough this control method has a simple structure, it has poor control accuracy, slow control speed, labor-intensive, high energy consumption, and high noise. Moreover, the contactor is frequently switched on and off during the temperature control process, and contact arc discharge often occurs. Short circuit, damage the contactor, and adversely affect the safety of operators and equipment. Therefore, the application of microcomputer technology to heat treatment process control is an inevitable trend to improve the quality of heat treatment products and reduce production costs.Gear Vacuum Carbonitriding The electric heating furnace temperature single-chip control system composed of 8031 single-chip microcomputer, bidirectional thyristor trigger and switch circuit, electric heating furnace, temperature detection and feedback and A/D conversion circuit, etc. It adopts single chip automatic control, which has high control precision, good reliability, strong control function and high cost performance, and has been widely used.Linear Optical Axis Vacuum Quenching
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| galvanized coil, galvanized coil, color coated coil, aluminum coil |
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Posted by: toyota1515 - 08-01-2022, 08:31 AM - Forum: Selling Leads
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[size=1]Product name: galvanized coil, galvanized coil, color coated coil, aluminum coil[/size]
[size=1]Specifications: 0.12-1.6mm wide 600-1250mm Z20g-z275g.[/size]
[size=1]Place of Origin: Boxing County, Binzhou City, Shandong Province, China[/size]
[size=1]contact details:[/size]
[size=1]Email: wade@haomeicn.com[/size]
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| What does the aging furnace do? |
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Posted by: wyd1014 - 07-29-2022, 07:27 AM - Forum: Knowledge & Technique
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If the workpiece is heated to a higher temperature and the aging treatment is carried out in a short time, it is called artificial aging treatment. If the workpiece is stored at room temperature or under natural conditions for a long time, the aging phenomenon occurs, which is called natural aging. Aging treatment. The Function And The Production Of Ceramic Bulletproof VestThe purpose of aging treatment is to eliminate the internal stress of the workpiece, stabilize the structure and size, improve mechanical properties, etc. Aluminum aging found that the hardness of this alloy after quenching is not high, but after being placed at room temperature for a period of time, the hardness will increase significantly.Casting Vacuum Heat Treatment Process The phenomenon came to be known as precipitation hardening. This discovery has generated great interest in the engineering community. Subsequently, people successively discovered some aluminum alloys, copper alloys and iron-based alloys that can be strengthened by aging treatment, creating a new strengthening method that is fundamentally different from general steel quenching and strengthening - aging strengthening. Copper wire workshop design and vacuum heat treatmentDuring solution treatment, the heating temperature must be strictly controlled, so that the solute atoms can be dissolved into the solid solution to the maximum extent without melting the alloy. Vacuum Heat Treatment Furnace For MoldsThe allowable deviation of the heating temperature for solution treatment of many aluminum alloys is only about 5 °C. For artificial aging treatment, the heating temperature and holding time must be strictly controlled to obtain the ideal strengthening effect. In production, staged aging is sometimes used, that is, it is first kept at room temperature or a temperature slightly higher than room temperature for a period of time, and then kept at a higher temperature for a period of time. Doing so can sometimes get better results. When maraging steel is quenched, microstructure transformation occurs and martensite is formed. Martensite is a supersaturated solid solution. This steel can also be strengthened by an aging treatment.
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| Failure Analysis of Industrial Furnace |
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Posted by: wyd1014 - 07-28-2022, 09:02 AM - Forum: Knowledge & Technique
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[font=宋体]Each reversing valve is equipped with a pneumatic triple, which should be regularly refueled, slag cleaned, and drained. When refueling, first close the front hand valve of the pneumatic triple piece, and then remove the oil cup to add oil. The oil volume of the oil cup should not exceed the full scale. The oil is the atomized oil specified by the pneumatic triplet, and can also be replaced by 32# turbine hydraulic oil. The atomization speed of the oil should be adjusted to 3 to 5 days to atomize a cup of oil.[/font]
Vacuum Heat Treatment Of Aluminum Alloys News
[font=宋体]When refueling, if necessary, slag removal and drainage can be carried out together. If the pneumatic triplet does not atomize oil, the triplet should be repaired or replaced in time.Vacuum Heat Treatment For Parts Production[/font]
[font=宋体]When the reversing system fails and alarms, find out the fault point according to the alarm indicator displayed on the control cabinet, and carry out timely treatment after on-site inspection and confirmation to restore the normal operation of the reversing valve. If the air pipe bursts or falls off, close the compressed air supply valve of the reversing valve and replace the corresponding air pipe immediately. If the limit switch is loose and cannot contact the circular iron sheet on the valve stem, the rotation angle of the limit switch can be adjusted immediately to ensure the normal contact between the reversing valve plate and the limit switch contact wheel when it is at the front and rear limit positions.Gear Vacuum Heat Treatment Process[/font]
[font=宋体]If it does not belong to the above 1), 2) cause the alarm, check whether the solenoid valve operates normally, and replace the solenoid valve if necessary. If it does not belong to the above 1), 2), 3) fault alarm, check whether the cylinder is leaking, and whether the wiring of the limit switch and the solenoid valve is normal.High corrosion resistance aluminum alloy brazing sheet and its vacuum heat treatment process news
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| PE Aluminium Coated Coil |
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Posted by: toyota1515 - 07-27-2022, 07:28 AM - Forum: Selling Leads
- Replies (1)
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PE (polyester) coating: high molecular polymer as monomer and addition of alkyd, is a UV-resistant coating. It can be classified either as matt or glossy according to your needs. The compact molecule structure makes the point surface luster and smooth, which assures good printing on the panels’ surface. Characteristic:
1) High gloss
2) wide range of color
3) Impact and weather resistance
4) Easy for processing and installation
5) Excellent torsion strength
wade@haomeicn.com
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| How to choose high-quality patterned aluminum plate? |
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Posted by: toyota1515 - 07-27-2022, 07:16 AM - Forum: aluminium faq
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The decoration of the checkered plate is very extensive. The three types of five-rib, grinding, and application of the patterned aluminum plate are all featured in the fields of construction, transportation, and refrigeration equipment. You can see the news of the aluminum plate. The more, the quality of various patterned aluminum plates is also good. How to choose high-quality patterns?
First，look at the thickness. The thickness, strength, and oxide film thickness of the high-quality checkered plate should conform to the national standards: aluminum plate thickness ≥1.2mm, tensile strength ≥157N/mm2, yield strength ≥108N/mm2, oxide film Thickness ≥ 10 microns. If it fails to meet the specifications, it is a defective board.
Second, look at processing. The patterned plates produced by regular large factories are made of exquisite materials, the surface is bright and bright, the patterns are clear and regular, the aluminum plates are flat, and the appearance is free from oil stains, scratches, breaks and other defects; while the patterned aluminum plates produced by small factories use scrap aluminum as materials, The appearance is dull and dull, the markings are not clear and irregular, the board surface is not flat, the performance is unqualified, and the quality is poor.
Third, look at the price. Patterned aluminum plates are divided into two types: pure aluminum and alloys, and their prices are naturally different. The processing cost of patterned aluminum plates produced by regular manufacturers is several thousand yuan per ton, and the price of alloys is higher than that of pure aluminum. When an enterprise is acquiring, it should not be compared with the price alone. If you buy substandard products, it will be too late to regret it.
Fourth ,look at the service. From the production line of the manufacturer to the workshop of the enterprise, the center has to go through many links of packaging, loading, transportation, storage, and unpacking. The striped aluminum plate will inevitably show defects such as oxidation and scratches. The large-scale and efficient suppliers will provide users with good service. Provide return and exchange services to solve worries for users.
Pattern type: large five-rib, small five-rib, three-rib, pointer type, diamond, orange peel pattern. Due to its good slip resistance and aesthetics, the checker plate has a wide range of uses in industrial plants, production workshops, and transportation facilities. The tread plate can increase the friction force, reduce the constant caused by the slippery road surface, and protect the personal safety.
Patterned aluminum plate is one of our company's advantageous products. The high-quality product quality makes Mingtai Aluminum's patterned aluminum plate very popular in domestic and foreign markets. Among them, the company's one-rib patterned plate has a market share of 60- 70%, of which the occupancy rate of the pattern plate below 1.6mm thickness reaches 80%.
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| custom aluminum film insulation |
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Posted by: toyota1515 - 07-27-2022, 06:23 AM - Forum: Selling Leads
- No Replies
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have a nice day！
Hello, we are a custom aluminum film insulation company.
What You can get:
1. Can not be torn by hand, extremely tough
2.24 hours normal heat preservation
3. Unlimited use, energy saving and environmental protection
Please CONTACT me for FREE SAMPLES!
what's app:+852 5644 4348
mail:niko@yifangmatl.com
Tel:+8613794924868
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